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ORTEC Micro-Detective and Detective-200 User`s Manual

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1. 35 esi dx ROS EEEX 14 exhausted battery startup from 70 features illustrated lt 4 i55 xu epee REG 10 front panel che ced des a ah elt T CEU ES 9 GPS S ose EE ee EC eee 57 high voltage setup 00 81 identification reports 83 Monitor hardware status 82 ON OFF b ttON oeat eaha Ste bens 9 operating cautions St RR Eb 13 D GSCUS 5 GS gi bbb Ge glee DAA 84 shock tol tance 4 4i ho Shs ERR ES Eb 14 software and firmware versions 50 SLAGUS SCTCCH eco desee UA NP NE Od ou 42 temperature and humidity specifications 14 temperature limits 65 2 yl soa RELATES 14 use as conventional MCA 73 Monitor Mode portal monitoring sees esee RS xe EAE 31 PAPI SULVE VS eerte kostete o et gine Bey as 31 Neutron count rate ote cip S Gea ebay tides 59 Operating cautions lt 3 ico 43S 4 a ee eee 13 Password enter to change settings 50 51 98 Set password ders ois ain ebay ee are Barbe 56 Power exhausted battery startup from 70 internal vs external 6 45 4 aie e ets 13 Power adaptor charger CONS sore bi ior alg die ee iu bid ed 13 POW CE uno debito sutor cibos USE ees 13 Quantitative analysis 20000 76 RDD Detected message vier r9 AS 39 Reference point detector 88 Remote serein reco sisi edv a o a 60 Reports found nuclides s 4s exe RES 27 48 IPS E PD 83 GPS location dala 1s eserine et tu
2. HPGe DETECTOR rd WI Xe a 2 90 1 20 3 87 NEUTRON DETECTOR Figure 88 Micro Detective Reference Points for the HPGe and Neutron Detectors and Geiger M ller Tube all measurements in inches GEIGER M LLER TUBE HPGe DETECTOR Figure 89 Detective 200 Reference Points for the HPGe Detector and Geiger M ller Tube all measurements in inches 88 9 SPECIFICATIONS Cooler High reliability low power Stirling cooler dual piston design 1 W nominal lift at 100 K Initial cooldown time depends on ambient temperature but at 25 C is typically lt 12 hours for the Micro Detective and lt 24 hours for the Detective 200 GPS Internal NMEA compliant WAAS capable Wireless Communication Built in IEEE 802 11b wireless hardware third party software can be used to implement this option Stored Spectrum Memory The Detective can store search and spectrum files on removable SecureDigital cards The number of spectra stored on an individual card depends on the capacity of the card maximum supported capacity 2 GB System Conversion Gain In the default identifier mode the Detective operates at a fixed conversion gain of 8192 channels In MCA Mode the conversion gain can be set from 512 to 16384 channels Shaping Time Constants e Rise time Default Mode 3 4 us fixed MCA Mode 0 8 us to 23 us e Flattop Default Mode 0 8 us width fixed MCA Mode 0 3 us to 2 4 us
3. Changing the internal battery 1 4 Spectrum and Search File Storage Transfer and Viewing The Detective can store a nearly unlimited number of Identification Mode spectra in the ORTEC SPC file format ANSI N42 42 format or both Search Mode count rate strip charts can be saved in the ORTEC CHN format The background file is in the CHN format See Section 1 4 2 for more information on file types and filenaming conventions For details on saving and viewing Identification Mode spectra and the associated reports see Section 5 1 6 The files can be stored on user supplied removable Secure Digital SD storage cards 2 GB or less or in the computer s My Documents folder we recommend the storage card option The number of spectra stored on an SD card depends on the card s capacity The DetectiveEX program automatically creates a Data folder on the card in which spectrum and search files will be stored The home Survey Mode screen has a storage space remaining readout If you try to save to a full SD card simply insert another card with available storage space see also Section 7 1 The background chn file is stored on the computer in the Program Files DetectiveEX folder If it is moved or deleted you must perform a new background measurement before the instrument can be used for radionuclide identification If you store the spectrum files on SD cards they can be transferred directly to your PC with an SD card reader and Window
4. The ANSI N42 file is formatted for an InstrumentType of Radionuclideldentifier It includes the spectrum calibration sample description and identification results neutron count rate if the unit is so equipped and GPS location log 1 INTRODUCTION The filename format 1s YYYY MM DD hh mm sss 1 4 2 2 Search Mode Strip Charts Search Mode data are strip charts of count rate vs elapsed time The CHN format is simpler than the SPC format and is described in the File Structure Manual The N42 file includes the sample description and a count rate log for the gamma strip chart the count rate log for the neutron strip chart if the unit is so equipped and GPS location log The filename format is YYYY MM DD HH MM SSStype When saving in the ORTEC CHN format two files are saved for each search one for the gamma count and one for the neutron count type is either G for the gamma ray chart or N for the neutron chart When saving in ANSI N42 format only one file is generated type is B indicating that it contains both the gamma ray chart and for units so equipped the neutron chart 1 4 2 3 The Background File The background file is saved in the Program Files DetectiveEX folder as background chn and is overwritten each time the background is updated 1 5 A Note About the Detective 200 User Interface The illustrations and text in this manual reflect the user interface for Detectives that have neutron detecto
5. 88 04 26 5124 1173 2 25 4170 661 6 25 3610 662 45 25 0094 1332 5 23 5276 123 07121 8856 391 68 19 4495 121 6 18 4351 Figure 47 Top Spectral Lines View File 2 20 11 12 17 01 AM Battery Time 180 min es Latitude 36 0 13 0 N Longitude 84 14 21 9 W Altitude 298M Satellites 7 Dilution of Precision 2 Figure 48 GPS Report 49 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 5 1 7 About This dialog Fig 49 shows the instrument type presence or absence of neutron detector firmware and application software version numbers instru ment serial number and nuclide library version The Firmware Version prefix is DETH for the Micro Detective and DETJ for the Detective 200 Tap Back to return to the Advanced Setup menu Adv 5 22 11 6 15 03 PM Setup Battery Time 130 min Detective 200 No Neutron Detector 2012 Advanced Measurement Technology App Version 3 1 11 27229 Firmware Version DETJ 007 Serial Number D 200 2 ID Table Version 8 6 Figure 49 The About Dialog 5 2 Advanced Setup Page 2 If a password has been set the screen shown in Fig 50 will be displayed Tap in the password text box to open the soft keyboard Enter the password and tap OK If you entered the correct password which is case sensitive and treats spaces as characters the second Advanced Setup page will be displayed Fig 51 For more in
6. A blue simulated LED will be displayed in the upper left of all screens beside the screen title Figs 57 and 58 This shows you at a glance which radiation monitoring mode is currently selected Survey ID Mode Mode Figure 57 Figure 58 Figures 59 and 60 compare how suspect identifications in LCX mode are displayed in the Classify and ANSI ID Display Modes both screens reflect the same set of found and suspect substances Note that in LCX mode the Color coded IDs option is always on Found Plutonium 1 Am 241 shielded Found Industrial 2 Suspected Uranium 1 Suspected Nuclear Uranium 2 Figure 59 Suspect IDs in Classify Figure 60 Suspect IDs in ANSI Display Mode Display Mode 5 2 3 4 Color Coded IDs When this option is checkmarked on ANSI Mode nuclide IDs are displayed on a color coded background indicating their threat suspect innocent status refer to Figs 19 27 and 60 As noted in the preceding section this option is always on in LCX mode 55 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 5 2 4 Settings 5 2 4 1 Password The Settings screen Fig 61 allows you to set a password to prevent unintended changes to the Advanced Setup parameters The password is case sensitive alphanumerical can include spaces and can be of any length There is no factory default To set the password tap in the Pas
7. If properly installed and functioning MAESTRO software or other CONNECTIONS programs cannot find and communicate with the Detective when it is connected via the USB port and being used as an MCA e Make sure the USB cable is properly connected to both the Detective and PC e Make sure USB hubs are correctly connected and functioning e Make sure the Detective is turned on the USB port setting is in MCA Mode on the Settings screen Check the Master Instrument List on the PC to ensure that the Detective EX is on the list If it is not listed manually run the MCB Configuration program from the Windows Start menu See the MAESTRO User s Manual for detailed instructions on this operation 7 11 Other Problems with the Detective Should the Detective exhibit other unusual behavior confirm that the Regional Settings in the Windows Mobile operating system are set correctly and restore them if necessary The Detective is designed to function with Windows Mobile set to the English United States region and its default values for decimal symbol digit grouping symbol and time and date formats as described below Using other than the factory default settings can cause operational problems To check these settings e On the third page of the Advanced Setup menu tap Exit then confirm that you wish to end the Detective program Section 5 3 2 73 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual O
8. Innocent Industrial Co 58 Innocent Medical 35 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 36 Identification Co 60 Cr 51 Cs 131 Cs 134 Cs 137 Cu 64 Cu 67 Ga 67 Enriched Uranium Eu 152 Eu 154 Eu 155 Eu 156 F 18 Fe 59 Ga 64 Ga 64 shielded Ga 67 Ga 67 shielded Gd 153 Gd 159 Ge 68 Ga 68 HEU Hf 181 Hg 203 Ho 166 Ho 166m Ho 166m shielded I 123 1 123 shielded I 124 I 125 I 126 1 126 shielded I 131 I 131 shielded I 132 I 133 I 134 I 135 In 111 Ir 192 Ir 192 shielded Ir 194 shielded K 40 Kr 87 Kr 88 ANSI Mode Innocent Innocent Innocent Innocent Innocent Innocent Innocent Threat Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Threat Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Classify Mode Industrial Other Medical Industrial Industrial Other Medical Nuclear Uranium Other Other Other Other Medical Other Other Other Medical Medical Other Other Medical Nuclear Uranium Industrial Industrial Other Industrial Industrial Medical Medical Medical Medical Industrial Industrial Medical Medical Industrial Indust
9. The first time this Detective is connected to a particular PC for use as an MCA Windows runs a found new hardware installation sequence If asked for the location of the Detective driver select the automatically locate the driver option answer any remaining prompts and close the wizard PSold separately contact your ORTEC representative or nearest sales office 75 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Follow all installations for the CONNECTIONS Adv 3 11 08 8 13 50 PM Driver Update Kit and MAESTRO including Setup Battery Time 215 min running the MCB Configuration program accom panying MAESTRO to build a Master Instrument List of all ORTEC MCBs accessible to the PC D 1 set Password To return the Detective to standalone operation simply tap the Data ActiveSync radio button NOTE MAESTRO and other ORTEC applica GPS Part oa is is ata ActiveSync tions have a Lock Unlock Detector com a i Control MCA Mode mand to prevent unauthorized users from Control MCA Mode changing detector settings starting and ey stopping data acquisition and clearing the about Back detector memory This locking command functions separately from the Detective administrative pass word If the Detective is password locked in MAESTRO you can still use it in the field without knowing the password However the next time you use itin MCA Mode with
10. and count rate limits 24 59 Dose rate detector reference points cotes orte 88 ERIE 6645 T m 60 File transfer to PC s sewn Bos vas wheat 63 Gamma count rate meter 4 23 Gamma dose Tate Love x e wd 24 dose rate units dy Ee 59 rate meter display uoo wn 23 setup and defaults 04 59 GPS global positioning 4 GPS TENT 2 5o xb E wees ees 49 latitude longitude indicator 23 specification ua cic v ae ee ae RESP RS 89 troubleshooting 00005 T2 Hardware status 0 e cece ee eens 41 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Identification Mode identification SPC and N42 files 6 27 monitoring for radionuclides 25 Insight Mode cavoseioeetarets SS CREE 79 Launcher program coo ECRANS bees 7 8 LCX low confidence expert Mode 55 MAESTRO 32 i240 3 RR E EAS NUS 5 63 MCB Properties setup TT Monitor detector state of health 82 jor TP 84 troubleshooting 3 fai 555 ERVEEEP RSS 73 MCA Mode 1x at exe bet ieee SE CESS 57 75 Menus navigadon s siioni eea SOC 17 Micto Detective se iiaea a base 9 amplifier settings iicet RR wake ds 79 80 battery replacement 5 5054 eei ties 10 carrying Slaps osos ose SEM ERES 11 COMPONEMS cioe eh RC UAR UE a 9 CONNECTS se sco bExcocm E ets eee be 10 15 cooldown patl
11. and move quickly from energy to energy in Full mode Zoom In lt gt The lt gt button expands the display by halving the number of channels so the peaks appear wider The center channel of the new display will be the marker position 29 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual The Search Mode screen is a strip chart emulation Search GPS not communicating that displays total count rate gamma and neutron vs Mode Storage Space 25169 time see Fig 25 The gamma ray data are presented Neutron Count Rate 1 cps in blue and the neutron data are shown in red To adjust the x axis dwell time see Section 5 2 5 Because the spectrum display area is limited a modified version of scientific notation is used when labeling the Y axes for numbers greater than or equal to 10 000 The 3 number of trailing zeros in the number is replaced by Marker 241 Cats 1 Cnts E followed by the number of zeros Some examples 10 000 becomes 1E4 12 000 becomes 12E3 0 cps and the neutron data are scaled from 0 to 500 cps The Y axes can be autoscaled Scaled Y so the current maximum Y value for both counts is near the top of the graph as shown in Fig 25 or fixed Fixed Y such that Zoom Out gt lt The gt lt button contracts the display by doubling the number of channels so the peaks appear narrower The center channel of the new display will be the marke
12. determining the frequency of auto calibration configuring the SNM search dwell time and quality factor customizing the dose alarm sensitivity and adjusting the scroll rate for the Search Mode strip chart emulation IMPORTANT You can set a password to limit access to the second and third pages of the Advanced menu see Section 5 2 4 1 for instructions Chapter 6 provides instructions on downloading spectrum files to a PC Chapter 8 gives detailed information on connecting the Detective to a PC and using it as a high performance benchtop multichannel buffer with MAESTRO or other ORTEC spectroscopy applications 3 1 Survey Count Rate Dose Rate Mode In Survey Mode Fig 17 the Detective behaves as a passive monitor showing the current gamma count and dose rate neutron count rate for units so equipped instrument status detector dead time available disk storage space and battery charge time and date and GPS coordinates The three rate indicators show the count rate or dose as both a value and a bar graph The color of the bar changes with increasing rate The lowest rate is green then yellow then red The y gamma Count Rate bar changes to yellow at 6300 counts per second cps and red at 13300 cps At 20 000 cps the red bar begins flashing These various states are 23 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual illustrated in Fig 18 The factory set alarm limi
13. page 41 and tap Turn Cooler ON Within a few seconds the cooler will activate You will most likely be able to hear and or feel the Micro Detective s cooler Typically the cooler is somewhat noisy for the first few minutes of operation then settles into a quiet hum You may not be able to hear or feel the Detective 200 s cooler The status indicator will read Status Cooling If you wish to view the detector and hardware status tap Advanced Status Section 5 1 1 Until the detector has cooled and the HV has automatically turned on Detector Temp Cold Tip Temp and HV Volt will read ERR then they will switch to OK A warm Micro Detective typically requires 12 hours to cool to operating temperature If the ambient temperature is gt 30 C 86 F use the Micro Detective cooldown pad The Detective 200 typically requires 24 hours to fully cool When the detector reaches operating temperature the Detective bias voltage will automatically turn on and the status indicator on the Survey Mode screen will read Status Background is invalid As noted earlier the internal battery will not charge until the detector has reached operating temperature After that the battery will typically reaches full charge in 3 4 hours NOTE Once the Detective is cooled you can turn the cooler off for a brief period e g 10 to 20 minutes without significantly warming the detector As soon as the cooler is restarted assuming the instru
14. 1 27 11 3 24 34 PM Adv 1 27 11 3 24 34 PM Setup Battery Time 196 min Setup Battery Time 196 min Place Co 60 in front of the Micro Detective 2 Start Calibration Now Place Co 60 in front of the Micro Detective 2 Start Calibration Now Centroid 1332 88 keV FWHM 1 87 keV Cal adjustment 0 03 3 Use Improved Calibration Gamma Count Rate 47 cps 4 Run a Background Restore Default Restore Default Figure 38 Apply The Calibration Figure 39 Run A New Background 5 1 3 4 Restore Default If you have changed the calibration now or at any time in the past you can restore the factory calibration settings by tapping on the Restore Default button The factory values are always available Note that this feature is typically used for troubleshooting purposes The current back ground file is destroyed so you must run a new background before the Identify and Monitor Modes will function 45 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 5 1 3 5 Back If you do not want to apply the new calibration tap Back to return to the Advanced Setup dialog However if you have run this background as the final step of calibration remember that you must run a new background before the Identify and Monitor Modes will function 5 1 4 Background This command begins the background radiation measurement pre configured with the Bkg Settings command
15. Before being approved for shipment each ORTEC instrument must pass a stringent set of quality control tests designed to expose any flaws in materials or workmanship Permanent records of these tests are maintained for use in warranty repair and as a source of statistical information for design improvements Repair Service If it becomes necessary to return this instrument for repair it is essential that Customer Services be contacted in advance of its return so that a Return Authorization Number can be assigned to the unit Also ORTEC must be informed either in writing by telephone 865 482 4411 or by facsimile transmission 865 483 2133 of the nature of the fault of the instrument being returned and of the model serial and revision Rev on rear panel numbers Failure to do so may cause unnecessary delays in getting the unit repaired The ORTEC standard procedure requires that instruments returned for repair pass the same quality control tests that are used for new production instruments Instruments that are returned should be packed so that they will withstand normal transit handling and must be shipped PREPAID via Air Parcel Post or United Parcel Service to the designated ORTEC repair center The address label and the package should include the Return Authorization Number assigned Instruments being returned that are damaged in transit due to inadequate packing will be repaired at the sender s expense and it will be the sender s responsibi
16. Detective and Detective 200 Portable Nuclide Identifiers User s Manual 48 Adv Location not determined Setup Storage Space 25013 Choose File Data Location My Documents v Filename 2011 02 20 20 10 070 spc 2011 02 19 22 07 500 spc 2011 02 19 22 29 540 spc 2011 02 17 15 48 140 spc 2011 02 17 16 Ol 470 spc 2011 02 17 16 04 580 spc 2011 02 17 16 06 560 spc Figure 42 Spectrum Directory View File 2 20 11 4 07 50 PM Battery Time 178 min ID Report v ID Table Version 8 4 Found Industrial 6 Found Medical 2 Neutron Count Rate 0 0233 cps Total neutron counts 1 Total neutron count time 42 84 s View File Location not determined Storage Space 25015 Viewing spectrum file 2011_02_19_21_43_510 spc 10 10 10 i Marker 695 50keV 8 Cnts ES EX EN EN Figure 43 View Spectrum Tap ID to View Reports View File 2 20 11 4 08 00 PM Battery Time 178 min Found Nuclides v Co 60 Co 57 Ce 139 Cd 109 Cs 137 Y 88 Sn 113 Hg 203 Figure 44 ID Report Figure 45 Found Nuclides Report View File Location not determined Storage Space 25015 Suspect Nuclides v 186 keV Peak Present Figure 46 Suspect Nuclide Report for LCX Mode spectra only 5 ADVANCED SETUP View File Location not determined Storage Space 25015 DICEN 122 06 37 2830 165 857 32 0116
17. For example you cannot change amplifier gain conversion gain and other similar settings Installing MAESTRO v6 05 or later will allow you to use the Detective with both current and earlier releases of ORTEC applications such as GammaVision or the ISOTOPIC 32 Program for Radioactive Waste Characterization Using CONNECTIONS driver v6 09 06 or later will allow you to view the stored spectrum reports described in Section 8 3 8 The MAESTRO Software User s Manual Part No 777800 contains complete instructions on software installation network protocol setup and configuration of the MCBs attached to your PC When installing MAESTRO choose the USB Based Instruments selection to install the correct driver for the Detective When you disconnect from the PC and exit its MCA Mode all previous normal operation settings including the calibration are immediately restored and the Detective is ready for normal use as a standalone identifier 8 1 Connecting the Detective to a PC From the Advanced Setup menu tap Settings then tap the Control MCA Mode radio button This sets the Detective s USB port so the instrument s MCA can be connected to a host PC The other Detective features are disabled The Detective can then be used as a high performance HPGe MCA controlled by MAESTRO and other ORTEC CONNECTIONS spectroscopy applications Within approximately 3 seconds after entering MCA Mode the Detective screen changes to the display shown in Fig 78
18. MAESTRO it will still be locked Figure 78 Detective Ready For Use As MCA 8 2 Quantitative Analysis of Detective Spectra in GammavVision 32 and ISOTOPIC 32 The Detective can be used to collect data for quantitative analysis either as a standalone field instrument or a benchtop MCB connected to a PC In both usage modes the data can be stored as SPC format spectrum files The SPC files can then be quantitatively analyzed on a PC using GammavVision or ISOTOPIC Note however that the Detective is not designed to store efficiency information in the SPC files it creates Therefore for quantitative determinations special attention is needed to prepare the calibration CLB file so that GammaVision or ISOTOPIC will add the efficiency information during processing To prepare this calibration file load a Detective calibration spectrum into GammaVision or ISOTOPIC Use the software application s Calibration Wizard to obtain the additional efficiency calibration keeping the existing energy calibration After the efficiency calibration is computed save the complete set of calibrations as a CLB file 76 8 USING THE DETECTIVE WITH A PC AND ORTEC SPECTRUM ANALYSIS PROGRAMS To add the efficiency information to an existing SPC file typically from a standalone Detective e Transfer the SPC file from the Detective to the PC see Chapter 6 Recall the SPC file in GammaVision or ISOTOPIC Load the CLB file cont
19. Th 1 Display Figure 20 Identification Mode Screen in Classify ID Display Mode The expert LCX Mode Section 5 2 3 3 also displays suspected IDs i e nuclides that have been tentatively identified at too low a confidence level to list them as definitively found 25 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Chapter 4 lists all nuclide IDs along with ANSI their threat suspect innocent status and Classify category In addition this screen allows you to Pause Continue the current identification measurement This button has additional functions if you are counting to a real time preset see Section 3 2 2 e Save the current spectrum and IDs Section 3 2 3 On the Classify display tap to display found nuclide reports Section 3 2 4 e Tap Intense to display a continuously updating list of the 10 highest confidence peaks currently being detected Section 3 2 5 e Display the real time spectrum for the current data acquisition Section 3 2 6 unless the spectrum view has been disabled on the Settings dialog Section 5 2 4 2 in which case there will be no Display button on the screen e Switch to Search mode Section 3 3 If you do not Save the current spectrum and identifi cation results before going to Search Mode these data will be lost 3 2 1 Start the Identification To start an identification tap the Identify
20. auto accessory adapter If using a vehicle y Count Rate 49 cps battery as a power source note that cooling the detector to operating temperature can significantly discharge the vehicle battery r AY Dose Rate 0 00 mrem h Status Cooler Off Press the Detective computer s On Off button a cr c which is below and right of the touchscreen The search Monitor computer will boot up this can take 1 minute or more then the DetectiveEX program will start up at sw the Survey Mode home screen Note that when the program starts it will take several seconds to initialize and become responsive to button presses Until the unit is fully initialized the storage capacity readout and other indicators will not display accurate values Figure 7 The Display at Startup e If the DetectiveEX program does not start automatically you will instead see the blue Microsoft Windows Mobile screen In this case start the application by going to the upper left of the screen and tapping Start then DetectiveEX It will initialize at the Survey Mode screen 15 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Note the Status indicator on the display On startup it will read Status Cooler Off as shown in Fig 7 2 6 2 Turning On the Mechanical Cooler To turn the cooler on e Tap the Advanced button to display the first Advanced Setup menu page see Fig 32
21. can be saved on disk in the ORTEC CHN file format SNM Search Modet This mode lets you quickly sense the possible presence of special nuclear materials U and Pu even if other radioactive materials are present It is designed for rapid area searches as well as fast scanning of containers or vehicles Use it to locate possible SNM then test more rigorously using Identification Mode SNM Search Mode also takes advantage of the fact that the comparatively innocuous Ba can be used as a plutonium surrogate Advanced users can choose to enable a search for Ba feature within SNM Search Mode both for training purposes and for developing a site s concept of operations In all modes visual and audible for the Micro Detective alarms warn you of the high radiation field when the gamma dose rate exceeds 10 000 uSv hr 1 rem hr or the neutron count rate exceeds 500 cps on models so equipped You can optionally set the alarm threshold s lower 1 2 Hardware Features e The Detective s integrated computer runs under Microsoft Windows Mobile with the Detective as the only program running The operation of the software is controlled by soft buttons in much the same way as any other Windows program A soft keyboard is automatically displayed when any alphanumeric input is needed The color touchscreen has large soft keys for easy use with bulky gloves and an audible gamma count rate signal with adjustable volume The instrument setup
22. can be viewed and changed to ensure correct operation A password can be set to prevent changes to the setup parameters on the second and third pages of Advanced Setup dialog which is accessed by tapping the Advanced button e Battery powered operation The Micro Detective is completely self contained and portable and comes with a power adaptor charger It can operate for gt 3 hours on its internal lithium ion battery The car Patent pending Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual accessory connector included allows you to use 12 V power from an automobile battery In addition ORTEC offers optional battery belts to extend the remote operation time The Detective 200 can operate for gt 2 hours on its internal lithium ion battery Like the Micro Detective it comes with a power adaptor charger and 12 V car accessory connector and can run on an optional battery belt Checking the Detective s calibration is easy no matter where you are The Detective allows you to choose the calibration source that best suits your needs even the K naturally present in concrete or low sodium salt substitute The Detective includes global positioning GPS hardware and where GPS signals can be detected the upper right corner of the screen includes the current latitude and longitude as shown in Fig 8 on page 17 The GPS coordinates are captured and stored at the start of each
23. confidence value for the peak When a detected energy matches an entry in the library its tentative identity is posted on this screen by peak energy in column 1 and ID confidence factor also called the Q value in column 2 The higher the confidence value the more likely that the peak is a real gamma ray peak and not background noise It should be understood however that a peak could be seen in the top lines list but the corresponding nuclide not reported as found This is because there are many other tests applied before an identity or tentative identity is chosen In general any Confidence value over 25 indicates a good peak To return to the Identification Mode tap Back Tap Save to save the current spectrum and identification results in the selected data storage location and file format s Tap Display to view the current spectrum see Section 3 2 6 28 3 RADIATION MONITORING 3 2 6 Display Spectrum The Display screen Fig 24 plots the gamma ray ID Mode Elapsed Time 24 sec energy spectrum currently in memory This feature gives the expert spectroscopist more information Neutron Count Rate 0 cps about the nuclides present The expert can then make more informed decisions about the material under investigation Battery Time 196 min AY Dose Rate 0 01 mrem h To enter Display Mode tap the Display button See the Display Controls discussion below Marker 640 77keV 7 Cnts Tap Save
24. d Bs E ek awe 14 cooldown at gt 30C 2 eee ee eee 14 detector warmup sese 92 pOWer SOUTCES oue vate nds RW A s 13 POWEIAIP s oua s Ie vases ORE En 16 restano Ay ow oci DERI SE n 16 SBIDDIIBS 23d ate soi pU eA RAE OR HU 92 shipping preparations 14 shock tolerance sss m eR 14 shutdown for brief periods 43 shutdown for long periods storage 14 92 StartUp co vacio ees POR ERU A I E PA 43 Data transfer to PC oec 57 Detective 200 das s bue EIS RESP 12 amplifier settings sess 78 80 battery replacement 10 COMponents 1 ss ous ais eae Soy Ss 9 CONNCCIONS 2 do cde Skee aes 10 12 15 exhausted battery startup from 70 features illustrated 0 12 front patiel ss 1d vore IS UOS RES RE 9 GES PETERSON 57 high voltage setup 20055 81 identification reports 83 Monitor hardware status 82 On Off button 0 0 eee eee ee 9 operating cautions iaceo was works 13 ucc ERN 84 shock tolerance as uds vae vw 14 software and firmware versions 50 Status SCICEN o Leste a aa dead ES RESP 42 temperature and humidity specifications 14 temperature limits 14 use as conventional MCA 73 weight nose heavy cautions 12 Display Mode 4 4 SR DE RES RSV 29 hiding the spectrum display 56 Dose
25. data For more information on the contents of these reports see Section 5 1 6 83 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 8 3 9 Presets Figure 87 shows the Presets tab Properties for LS MCB 137 The presets can only be set when the Detective is not acquiring data during acquisition the preset field backgrounds are gray indicating that RealTimefs they are inactive You can use any or all of the presets at one time To disable a preset enter a value of ROl Peak cnts zero If you disable all of the presets data Rr will PU MNA ae emery manually stopped f Overflow Amplifier Amplifier2 AmplfierPRO ADC High Voltage About Status Reports Presets Live Time s When more than one preset is enabled set to a non zero value the first con Figure 87 Presets Tab dition met during the acquisition causes the Detector to stop This can be useful when you are analyzing samples of widely varying activity and do not know the general activity before counting For example the Live Time preset can be set so that sufficient counts can be obtained for proper calculation of the activity in the sample with the least activity But if the sample contains a large amount of this or another nuclide the dead time could be high resulting in a long counting time for the sample If you set the ROI Peak preset in addition to the Live Time preset the low level samples will be co
26. detection threshold for any one of the radionuclides or neutrons is crossed As a Ba source is approached the confidence bar associated with it begins to lengthen and approach the threshold Fig 29 Continue to search Figure 28 SNM Search Under Way SNM 36 013 3 N 84 14 21 7 W SNM 03 13 2008 8 57 04 PM Mode Battery Time 184 min Mode Battery Time 136 min U 235 Region U 235 Region Continue to search Figure 29 Ba Threshold Almost Exceeded 3 RADIATION MONITORING As the Detective comes close to the Ba source the identification for the radionuclide exceeds the threshold The confidence bar enters the shaded part of its box and the shading turns red to indicate the radionuclide has been found Fig 30 Figure 31 shows a high probability hit To verify the presence of SNM tap Identify to switch to Identification Mode SAM 03 13 2008 8 18 04 PM SNM 36 013 3 N 84 14 21 7 W Mode Storage Space 1548 Mode Battery Time 180 min U 235 Region U 235 Region Ba 133 Demo Ba 133 Demo Possible Ba 133 Position Detective to maximize reading then press Identify to confirm Possible Ba 133 Position Detective to maximize reading then press Identify to confirm Figure 31 High Confidence That 133Ba Has Been Detected Use Identification Mode to Verify Figure 30 Ba Tentatively Detected 33 Micro Detective and Detective 200 Portable Nuclide Identifiers User s
27. discussed in Section 5 2 2 To measure the background e Remove all sources from the area e Tapping the Run a Background button at the end of the manual calibration routine opens the screen shown in Fig 40 and automatically starts the background acquisition Acquisition continues until you tap either Save or Cancel which will return you to the Advanced menu f the measurement is canceled before the minimum time has elapsed the software does not accept i e save and use the new background spectrum Instead it reverts to the existing background file 5 1 5 List Nuclides View Analysis Library This screen Fig 41 displays the current library of radionuclide IDs and library version The complete list of IDs is in Chapter 4 If you wish you can create a text file listing of the library entries by tapping Save to File This creates the file Nuclides txt in the Detective s My Documents folder 5 1 6 Recall Spectra Recall Spectra lets you view stored SPC spectrum files and their associated reports It opens the Choose File dialog Fig 42 which displays the Data Location listbox and the list of spectra in the currently selected location Select the desired data location then use the scrollbar to browse up and down through the list of spectra Tap Back when finished viewing spectra As noted elsewhere if you are running this background as the last step of the manual calibration routine the Identify and Monitor Modes wi
28. not allow the instrument s internal battery to become exhausted and that you read Section 2 4 on the Detective s internal and external power sources 2 GETTING STARTED e When monitoring very high activity sources whether the source is an innocent or threat nuclide if the detector Dead Time exceeds 70 the detector cannot process gamma radiation and generate IDs according to its performance specifications A red indicator in the upper right corner of the screen tells you to MOVE BACK from the source until the dead time drops below 70 so that the instrument can perform as specified See Fig 9 page 17 When the most recent background reading is no longer valid the Background Invalid message is displayed on the Survey Mode screen The Identify and Monitor buttons become inactive and the system will not post radionuclide IDs until a new background is accepted see Section 2 10 However the gamma and neutron count rate meters on the Survey Search and SNM Mode screens continue to function normally so the unit is still passively monitoring 2 6 Startup and Cooldown 2 6 1 Connecting the Detective to External Power and Turning It On e Remove the Detective from its shipping carton Survey GPS not communicating Mode Storage Space 25173 Connect the power adapter charger to an ac power Neutron Count Rate 0 cps source and to the Detective s rear panel INPUT POWER connector Alternatively you can use the 12 V dc
29. spc and chn ANSI N42 42 Both ORTEC and ANSI aie Figure 70 Select the Data Format s Setup Choose File Data Location Storage Card Data v Filename 2011_07_12_14_02_070 spc 2011_07_12_14_09_190 spc 2011_07_12_14_09_320 spc 2011_07_06_09_15_140 n42 2011_07_06_09_17_360 n42 2011 07 06 15 47 280 n42 2011 07 12 14 02 070 n42 Adv 7 17 11 2 43 54 PM Storage Space 49560 Figure 71 Delete Spectrum Files 6 FILE TRANSFER TO PC IN WINDOWS 7 XP AND 2000 The Detective stores Identification Mode spectra in the ORTEC SPC and ANSI N42 file formats and Search Mode spectra in the simpler CHN format ORTEC files downloaded to a PC can be viewed and analyzed with CONNECTIONS programs such as MAESTRO GammaVision 32 and ISOTOPIC 32 The file transfer method depends on your PC operating system and where your spectrum files are stored on the Detective Spectra stored in the SD card s Data folder The simplest method is to move the card to a PC with a memory card reader and Windows Explorer Otherwise transfer files using Active Sync or the Windows Mobile Device Center as described below Spectra stored in the Detective s My Documents folder PCSs with Windows 7 You must download and install Windows Mobile Device Center as described in Section 6 1 then copy files via Windows Explorer PCSs with Windows 2000 or XP You must download and install Microsoft ActiveSync driver a
30. the Shutdown mode which is fixed as SMART Properties for LS MCB 137 About Status Presets Amplifier2 High Voltage Amplifier Reports Amplifier PRO Conversion Gain 16384 x Lower Level Disc 80 H Upper Level Disc 16382 H Live Time 31 46 Real Time 32 08 Count Rate 556 Figure 82 ADC Tab Properties for LS MCB 137 Amplifier2 Amplifier PRO About Status Reports Amplifier High Voltage Presets 2400 2397 Volts Target Volts Shutdown SMART Y Actual Polarity C e Figure 83 High Voltage Tab This is a reference to the Detective s SMART 1 detector technology For more information on SMART 1 see the ORTEC catalog or visit www ortec online com 81 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 8 3 6 About This tab Fig 84 displays hardware Properties for LS MCB 137 and firmware information about Amplifier Amplifier 2 Amplifier PRO ADC the Detective as well as the data High Voltage About Status Reports Presets Acquisition Start Time In addition LS MCB 137 the Access field shows whether the Detector is currently locked with a password by MAESTRO Read Sample TIT ia Write indicates the Detector is un dn i Acquisition Start Time Access c pius Only means it is 05 11 18 Monday April 7 2008 Read wiite ocked see the note coe Firmware Revision Serial Number Acquisiti
31. the two modes See also Chapter 4 which lists all Identification Mode messages their threat suspect innocent status and Classify mode category 54 Adv 1 27 11 3 26 12 PM Setup Battery Time 196 min Select the minimum time a background must run before it can be saved 1 minute Q 5 minutes Q 15 minutes e 30 minutes Note To achieve optimal measurement performance it is recommended that background measurements be acquired for a minimum of 30 minutes Figure 55 Set the Minimum Background Acquisition Time Adv Location not determined Setup Storage Space 49560 Real Time Preset 1 to 9999999 seconds inclusive or blank for no preset ID Display Mode Q Classify ANSI C LCX mode Color coded IDs Figure 56 Identification Mode Setup 5 ADVANCED SETUP 5 2 3 3 LCX Low Confidence Expert ID Mode The LCX identification mode displays suspected threat alarms and identifications at an approximately 30 lower confidence level than the normal mode This results in more hits on suspected threat nuclides Although detection is arguably improved in LCX mode the false alarm rate will increase to a level unusable for many applications Be aware that the instrument will issue approximately two false suspect threat alarms every hour while in LCX mode Therefore we recommend LCX mode only for experienced spectroscopists To enable LCX Mode mark the checkbox and click on Back
32. to external power Remember that the cooler cannot be restarted from the internal battery 6 Restart the Detective turn on the cooler and wait for the instrument status to change to Ready 96 Administrator Mode advanced setup 0 00 ee eee 41 hiding the spectrum display 56 Password 6 44 Ones tales Lawes VER x 56 Alarms dose rate and count rate 59 MOVEBACK ses 17 RDD oL iussa ERR 39 59 Audio volume 25s Susa RR v RR s 59 Background measurements 53 final mandatory step in calibration 22 ID and Monitor Modes disabled 15 invalid background 15 minimum data collection time 46 54 performing the background measurement 46 required after manual calibration 45 Battery 2 lt 0 ner ce alum s anor aeta e nien 13 cannot cool detector 04 43 exhausted startup from 70 IeplaciniB uso se bene Res OO 10 95 Calibration check see Ens 19 43 auto calibration lllseslsn 51 man al ue er sd OE Do RS RU RR 43 new background required 20 22 45 troubleshooting lessen 71 user defined sources 000 51 Calibration source 0 002 eee eee 19 user defined 5 ouem v ERVEXNs 51 enum 950k ia eds ee daw ee news ees 13 Connecting toa PC iussus etwas oes ea 75 using MAESTRO 32 20 71 Cooler cautions s ea Savas
33. to save this spectrum and identification zoom gt lt lt gt Li results to the selected data storage location and file Zoom ES formats Tap Back to return to the previous dialog Figure 24 Spectrum Display Mode Because the spectrum display area is limited a modified version of scientific notation is used when labeling the Y axes for numbers greater than or equal to 10 000 The number of trailing zeros in the number is replaced by E followed by the number of zeros Some examples 10 000 becomes 1E4 12 000 becomes 12E3 The spectrum display has a vertical marker line Just below the spectrum is shown the position of the marker in the spectrum in keV and the counts in the marker channel To move the marker line to a different location tap the desired position The marker will jump to that location and the values will update correspondingly You can also press on the display area and drag the marker left or right to the new location 3 2 6 1 Display Controls The spectrum display control buttons are just below the display You can use them to show the spectrum in different ways for better interpretation of the spectrum e Full Zoom In the expanded view the Full button restores the display to 8000 channels In the full view the Full button changes to Zoom and zooms the display to the last horizontal expansion before Full In this way you can easily look at the peaks in the spectrum in detail Zoom in
34. 4 View Found Nuclides List for Classify ID Display Mode Because the Classify ID Display Mode lists categories instead of specific radioisotope names the Detective provides a screen that lists the Found Nuclides and Suspect Nuclides in LCX Mode To view the found nuclides simply tap on any of the ID messages on the ID Mode screen The first tap will open the Found Nuclides report see Fig 22 Each ID will have a red yellow or green background corresponding to its threat level as described in Chapter 4 To access the Suspect Nuclides report in LCX Mode tap an ID message on the Found screen The 27 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual report screens let you Save the current spectrum and identification results to disk and Display the current spectrum Tap Back to return to the main Identification Mode screen 3 2 5 Intense View Highest Intensity Spectrum Lines Tap Intense to view the list of most intense gamma ray lines in the spectrum The most intense lines list is a continuously updating list of the 10 best peaks currently detected Fig 23 ID Mode Elapsed Time 131 sec ID Mode Elapsed Time 9 sec Battery Time 178 min e Battery Time 6 min Found mM Intense Energyle confidence Figure 22 View Found Nuclides Figure 23 View Top Lines List The energies are based on the internal nuclide library The rank is based on the
35. 49 ID Xe POU civis oe eee e CES RR UPS 48 Suspectatuelidesess s sse bere DAS 27 49 top lines most intense 28 49 viewing stored spectra and reports 46 47 Restricting access to settings 56 Search MIOHE iero Role ES aide E RUPEE hg 3 strip chart CHN and N42 files 7 dwell time per channel 57 monitoring count rate 30 SMP PINE Jo pacc del TREND ES eee uh S 14 92 Shutdown for long periods storage 14 92 SNM Search Mode 3 Eee RES 3 32 SEND oaa eG Sold aly aoaea ed EY 57 Spectrum delete stored spectra 3 adc toys er etx 62 Display Mode 2 53 s eu etie RENE RR 29 enter a deserptiolt ss uu tese er ass af 61 file storage location 61 Tile Tans ler to PG eis veut Rot xf 63 filename TOMAS 1 4 ex eer ERI ES 61 hiding the spectrum display 56 identification SPC and N42 files 6 27 quantitative analysis 4 76 search CHN files uuu liner ART aX 30 Stored saved spectra eet REA A 5 transfer to DC o3 esae MEC Etats 57 viewing stored spectra and reports 46 zoom marker scaling i 22 2 es 29 Survey Mod se tacos Sante thea boat 1 passive monitoring 2 4 23 Troubleshooting 13er Ba Sq eh ae AES 69 Windows connectivity troubleshooting os v bs x bate cada 72 Windows 7 Mobile Device Center 63 XP and 2000 ActiveSync 65 Wireles
36. 63 shows the setup dialog for Pu 239 To set up the Neutron count rate for units so equipped in counts per second tap the Neutron tab tap in the threshold field to open the soft keyboard enter the desired value and tap Set To enable the Ba 133 search Fig 64 mark the Include in Search checkbox and enter the desired alarm threshold value then tap Set When this feature is disabled the Ba 133 bar graph is not displayed on the SNM Search Mode screen Tap Back to return to the Survey Mode screen Adv 1 27 11 4 12 49 PM Adv 1 27 11 4 05 56 PM Setup Battery Time 193 min Setup Battery Time 191 min Pu 239 Q Alarm Threshold Ba 133 Q Alarm Threshold bo sa zo E Include in Search Dwell Time Seconds Figure 63 Configure the SNM Search Dwell Time Seconds Figure 64 Enable the Ba 133 Search and Alarm Threshold 5 ADVANCED SETUP 5 2 7 Dose Rate Units and Alarms In all modes the Detective alarms audibly and visually at a gamma dose rate of 10 000 uSv hr 1 rem hr and or the neutron count rate gt 500 cps Above these limits the ID Mode s Found Nuclide screen reports the message RDD Detected The Dose Alarms dialog Fig 65 lets you optionally set lower thresholds for one or both types of radiation To set either Threshold tap in the field to display the soft keyboard Enter the desired value and tap Set You can choose display the gamma dose rate in microSieverts per h
37. Forgot the Password There is no master password Contact your ORTEC representative or our Global Service Center for assistance 7 7 Calibration Issues 7 7 1 Calibration Takes Very Long to Complete or Does Not Finish at All e Make sure your calibration source corresponds to the source or peak energy selected on the calibration settings screen Section 5 2 1 e Ifthe amount of time remaining see Fig 37 is lengthy use a higher activity calibration source or position the source on the detector endcap e If the calibration routine does not complete i e if it continues running beyond a few minutes tap Abort Calibration correct the situation and restart the calibration 7 7 2 The Centroid FWHM or Calibration Adjustment Value Has Changed Dramatically Since the Last Calibration This is a highly unlikely occurrence The Detective is an advanced digital design and highly stable when operating correctly e Ifthe energy calibration appears highly variable contact our Global Service Center or your ORTEC representative Routine changes of the order of 0 05 are to be expected This might simply be due to counting statistics in the spectrum A change much larger than this say 0 596 bears investigation Apparent changes in the reported FWHM calibration are most likely to be statistical variations If the gain calibration adjustment value is stable the unit is functioning properly 71 Micro Detective and Detective 200 Porta
38. If you have any questions about the use or maintenance of this instrument please contact your ORTEC representative or our Global Service Center first IMPORTANT The Detective is designed to function with the Regional Settings in Microsoft Windows Mobile set to the English United States region and all of its default settings as discussed in Section 7 11 Using other than the factory default settings can cause operational problems iii TABLE OF CONTENTS WARRANTY erasoa besan FERT ii ADDITIONAL WARRANTY STATEMENT ssseeeee hn iii Safety Instructions and Symbols sot e n I eR yen Ce RO ER Rs ix Cleans IMSMUCHONS oed o ar en Far nta itane diae benedi er ioa ne aret ix INTRODUCTION 2 cb rann a e a a eke Gott am E Oe put taeda 1 IL Montone Modes respati eser PU RUE Ca ANA PLEX ae og REIN E EISE 1 1 2 Hardware Features noira or rI cui ia whe ea see a a a ee e E ed 3 1 3 How This Manual Is Oreanized oeo ud uen eae ae aa owe E EEE AE EE EPA 4 1 4 Spectrum and Search File Storage Transfer and Viewing Lu 5 1 4 1 Saving Spectra and Searches coi eur ee ae rr oA eR EX CR SE Pu awe es 6 1 4 2 File Formats and Filenaming Conventions 0 00 eee eee eeee 6 1 4 2 1 Identification Mode Spectra 4 vues e te ee ee ree ees 6 1 4 2 2 search Mode Strip Charts sd uus bes he atat po e rni Pre em Patcr d 1 4 2 3 The Background Blei urus d we ES eere a cbe d aum 7 1 5 A Note About the De
39. M ller tube GM for high dose rates 82 8 USING THE DETECTIVE WITH A PC AND ORTEC SPECTRUM ANALYSIS PROGRAMS See Gamma Dose Rate Determination page 87 for further discussion of the two dose rate meters Detector Temperature reported as OK or ERR Battery Voltage reported in volts Battery Time Remaining in minutes Cooler Body Temperature OK or ERR Cooler Drive Voltage OK or ERR Cold Tip Temperature OK or ERR HV Bias in volts ID Table Version reports the identification table version and release date To resolve status problems refer to the troubleshooting chapter For further assistance contact your ORTEC representative or our Global Service Center 8 3 8 Reports This tab Fig 86 displays the reports Properties for LS MCB 137 available for the current spectrum file li i including the ID Amplifier Amplifier2 ADC HighVoltage About Or MVE Specirum SESAUCHTIE me 7 Status Reports Presets MDA Preset Found Nuclides Suspect Nuclides pe DRept v Top Lines and for units so equipped GPS reports You must be running Found Nuclides Suspect Nuclides MAESTRO or other ORTEC Top Lines programs that use CONNECTIONS ll v6 09 06 or later Average neutron count rate 0 0 cps When using the Detective as an MCA controlled by the host PC be sure to click the Refresh button for each report to ensure you are seeing Figure 86 Reports Tab the most current
40. Manual 34 4 IDENTIFICATION MESSAGES AND RADIONUCLIDE LIBRARY This chapter provides the list of identifications for the v8 6 nuclide library and their categoriza tion in the ANST and Classify ID Display Modes Section 5 2 3 Identification ANSI Mode Classify Mode 186 keV peak present Suspect Nuclear Uranium 2614 keV peak present Suspect Nuclear Uranium 375 414 peak present Suspect Nuclear Plutonium Ac 225 Innocent Medical Ac 227 Innocent Industrial Ag 110m Innocent Industrial Am 241 Threat Industrial Am 241 shielded Threat Nuclear Plutonium Am 241 unshielded Innocent Industrial Ar 41 Innocent Industrial As 72 Innocent Industrial As 74 Innocent Medical At 211 Innocent Other Au 198 Innocent Industrial Ba 133 Innocent Industrial Ba 140 Innocent Industrial Be 7 Innocent Industrial Beta emitter Innocent Bremsstrahlung Bi 207 Innocent Other Bi 212 Th 232 U 232 daughter Innocent Industrial Bi 214 Ra 226 daughter Innocent NORM Br 76 Innocent Other Br 76 heavily shielded Innocent Other Br 76 shielded Innocent Other Br 77 Innocent Industrial Ca 47 Innocent Industrial Cd 109 Innocent Other Cd 115 Innocent Industrial Ce 139 Innocent Medical Ce 141 Innocent Medical Ce 144 Innocent Industrial Cm 242 Innocent Industrial Cm 243 Innocent Industrial Cm 244 Innocent Industrial Co 55 Innocent Industrial Co 56 Innocent Other Co 56 shielded Innocent Other Co 57 Innocent Industrial Co 57 shielded
41. ORTEC Micro Detective Detective 200 Portable Neutron and Gamma Nuclide Identifiers User s Manual Software Version 3 1 Printed in U S A ORTEC Part No 931046 0212 Manual Revision F Advanced Measurement Technology Inc a k a ORTEC a subsidiary of AMETEK Inc WARRANTY ORTEC warrants that the items will be delivered free from defects in material or workmanship ORTEC makes no other warranties express or implied and specifically NO WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ORTEC s exclusive liability is limited to repairing or replacing at ORTEC s option items found by ORTEC to be defective in workmanship or materials within one year from the date of delivery ORTEC s liability on any claim of any kind including negligence loss or damages arising out of connected with or from the performance or breach thereof or from the manufacture sale delivery resale repair or use of any item or services covered by this agreement or purchase order shall in no case exceed the price allocable to the item or service furnished or any part thereof that gives rise to the claim In the event ORTEC fails to manufacture or deliver items called for in this agreement or purchase order ORTEC s exclusive liability and buyer s exclusive remedy shall be release of the buyer from the obligation to pay the purchase price In no event shall ORTEC be liable for special or consequential damages Quality Control
42. S 4 452 4 S eft EY S E A E a bees wees 53 TABLE OF CONTENTS 5 2 3 Identify Identification Mode Settings 0 0 0 cee eee 54 5 2 3 Real lime Preset sde es pede ER RAN I ERROR IRE pe et 54 25 2 0 2 ID Display Mode cote toss aes Cote es PIS ERU WEN Sew aq se 54 5 2 3 3 LCX Low Confidence Expert ID Mode 55 5 2 3 4 Color Coded IDs 5 2 ordeo er asa A ONERE tnc 55 3 2 ASCIDIA awk ie ete dl eu edes E E ES 56 2 7 AW PassWord s oet ace cual a rone eana Suche ne d ead eA a eum aU ENERE S 56 5 2 4 2 Allow Display of Spectrum 2335 0 etn aoe HERS eden pg 56 3 24 23 OPS POM ci oe ewe EE ee Whe ee es UEM ER ory 57 3244 USB PODES eps ac datos Ae ter ay du s pr e ox ee Oe a 57 Data ACHVES VNC cnc eoo RR E e DR RR EA 57 Control MCA Mode 1 iple ERR Go EE Ee Es 57 5 2 5 Search Mode Settings vse cde cess cies nia RE NES OUR CE Gto ar apu ns 57 5 2 6 SNM Mode SEUTIBS is ioi era miae fin komen ded es inl a ret pu Fed Ke 57 5 2 7 Dose Rate Units and Alarms s a eee ee posee i ede de aet daw Made 59 5 2 8 Adjust Audio Volume Micro Detective only 0 0 00 e eee ee 59 2 95 Adyanced setup PACE 3 rrr e aqui ue De Beh oe amen p ee ety Ade e ees 60 Dede by REMOTE oe oh lide nga wie cC eu e REUNIR Fa ee Ree ne Ree ee 60 i es RID descende e o hate ee p epar t hie ut ed ae ate Nae LR Oed dom pe n e ae 60 92 3 UL A aia vty a ice foetu ee Das iced ea xb eme herd bens tese 60 5 3 3 1 Ask
43. a Background Restore Default Figure 15 A New Background Is Required 21 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 2 10 Running A New Background After Calibration The manual calibration routine deletes the current background chn file Therefore the final step of manual calibration is to run a new background NOTE This section discusses only the mandatory background measurement required to complete the manual calibration For the full discussion of Detective background measurements see Section 5 2 2 As noted elsewhere until you complete the back ground measurement the Identify and Monitor Modes are disabled The minimum acceptable data collection time for the background meas is set on the Bkg Settings screen see Fig 55 page 54 Note that for optimum counting statistics we recommend a minimum 30 minute background acquisition However the background settings screen also allows minimum intervals of 1 5 or 15 minutes All sources should be removed from the area before you tap the Run a Background button at the end of the manual calibration routine If you leave the source in place a high count rate message will remind you to remove the source and restart the calibration e Tapping the Run a Background button opens the Adv 1 27 11 3 38 47 PM screen shown in Fig 16 and automatically starts the Setup Battery Time 196 min background acquisition Ga
44. a green back ground Search Mode files in the CHN format have a spectrum icon with a gray background ANSI N42 files have the default file icon 6 FILE TRANSFER TO PC IN WINDOWS 7 XP AND 2000 Co G E gt Computer Tripod Data Systems Nomad X Search Tripod Data Systems Nomad p Organize v Er 4 Fr Favorites Storage Card d gt BE Desktop SY 057 MB free of 972 MB Mmm 1 83 GB free of 1 83 GB d Downloads Recent Places 53 Libraries Documents 2 Music i Pictures B Videos j Computer L Local Disk C cx Operating System In E Tripod Data System ca Gia Network 2 items Figure 74 The Detective Computer s Top Level File Structure 6 2 Windows XP and 2000 Download the ActiveSync v4 5 or higher from the Microsoft Download Center This is a free download When download is complete select Run This will automatically start installation Follow the wizard prompts and restart the PC If the Detective is in MCA Mode tap the Data ActiveSync option to return it to standalone identifier mode see Section 5 2 4 4 Connect the Detective s USB port to the PC If this is the first time the Detective has been connected to this PC Windows will display a series of Found New Hardware messages indicating a mobile device has been detected The Synchronization Setup Wizard will start Follow the wizard prompts for a standard partner
45. aining the proper efficiency information This can be done either with the application s Recall Calibration command or by specifying the CLB file as the calibration override in the GammaVision analysis options SDF file or the ISOTOPIC configuration Save the SPC file with or without further analysis NOTE If the CLB file is specified in the GammaVision SDF file or ISOTOPIC 32 configu ration the An1 file generated during analysis will contain the proper calibration information but the original SPC file without the efficiency information will not change To load the efficiency information before acquiring a new spectrum with the Detective attached to a PC Load the CLB file with the Recall Calibration command or by specifying the CLB file as the calibration override in the GammaVision SDF file or ISOTOPIC 32 configuration Acquire a new spectrum and save it in SPC format 8 3 MCB Properties in MAESTRO This section discusses the hardware setup dialogs you will see within MAESTRO when you use the MCB Properties command on the Acquire menu The MCB Properties dialog contains all of the instrument controls including acquisition presets high voltage hardware status indicators and amplifier settings To view the hardware parameters and Identification Mode reports for spectra downloaded from the Detective simply move from tab to tab Click on Close when finished When setting up a data acquisition note that a
46. approximately 20 seconds Wait 5 seconds then turn the unit back on This should reset any mechanical relays that might have been deactivated by the drop Inspect the exterior for evidence of mechanical damage or distortion e Listen to the cooler If you hear any unusual noises rattling or pinging emanating from the cooler contact your ORTEC representative or our Global Service Center 69 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual e Monitor the unit for the next few hours to ensure that it remains Ready indicating that the cooler and bias voltage are functioning properly calibrates successfully and correctly identifies the specified calibration source If on recalibration a large adjustment is proposed 20 396 or more this could indicate a problem If the unit fails in one or more of these respects or if one or more hardware diagnostic settings Section 5 1 1 indicate a hardware failure contact your ORTEC representative or our Global Service Center for further assistance Remember that there are no user serviceable parts inside the Detective and opening the case will void the warranty T 4 If the Detective Will Not Turn On Connect the Detective to an external power source it should automatically boot up turn the cooler on and start the Detective software application The unit can start the cooler using internal battery power but must be connected to an external power so
47. ayed result and later analysis For work in sensitive areas the spectrum display can be disabled e Monitor Mode Monitor Mode is used to identify radionuclides while moving relative to object s of interest In this mode the Detective collects and analyzes a rolling window of the eight most recent 1 second spectra making it particularly suited to situations where a completely different set of objects may be presented to the instrument in that time period An example application is an ad hoc portal monitor where packages or people pass by the instrument This mode is also useful as a search tool where the instrument is carried by the Measurements with portable identifiers cannot take into account the counting geometry and source shielding so the Detective does not determine the quantity of the detected nuclides 2 1 INTRODUCTION user in an effort to locate and identify a radioactive source IDs persist until you tap to acknowledge them this ensures none go unnoticed e Search Mode Search Mode makes it easy to find the areas of highest radionuclide activity that is places where Identification Mode should be used The display shows the total gamma ray count rate and total neutron count rate where applicable in each time period of the last 221 time periods in a rolling strip chart display The time period is selectable The gamma dose rate and neutron count rate where applicable is also displayed These strip chart data
48. ble to comply with transportation regulations be certain to turn the cooler off before shipping the Detective To do this tap Advanced in the Survey Mode dialog then Turn Cooler OFF The unit can be shipped as soon as the cooler is turned off There is no need to wait until the detector warms up 9 5 Long Term Shutdown Storage CAUTION This instrument should be cooled and brought to operational status Status Ready for at least 48 hours every month Failure to do this may result in degraded performance or cooling system failure This instrument uses a Stirling cycle refrigerator and all metal sealed cryostat designed for long operational life The vacuum integrity inside the cryostat is maintained by getters which scavenge traces of residual material when cold and by an ion pump that operates when the instrument is powered up These two techniques maintain the system vacuum in peak condition during normal use A good vacuum yields rapid cooldown and ensures operation at the high end of the instrument s operating temperature range 92 9 SPECIFICATIONS Over time in any cryostat system residual contaminants can be released from the materials inside the evacuated cryostat by a process called outgassing It has become apparent that in extended storage the vacuum in our mechanically cooled identifiers may degrade to the point that on trying to restart the gas load inside the cryostat is too high and the unit fails to co
49. ble Nuclide Identifiers User s Manual e If large changes in the calibration continue to occur contact our Global Service Center or your ORTEC representative 7 8 GPS Issues 7 8 1 Delayed Display of Location Coordinates If your GPS has not received signals from GPS satellites for gt 30 days e g if it has not been in use or has been used continuously indoors it may take 10 15 minutes for the unit to update and begin displaying location information 7 8 2 GPS Not Communicating This message see Fig 31 page 42 is displayed if the DetectiveEX software loses contact with the GPS unit Go to the GPS Port list on the Settings screen Section 5 2 4 3 and make sure the COM2 port is selected If the not communicating message continues to be displayed after you close the Settings screen contact your ORTEC representative or our Global Service Center 7 9 Windows Connectivity Problems Typically if ActiveSync or Windows Mobile Device Center cannot find the Detective it is because the Windows connectivity software was not installed first before the unit was connected to the PC If the Windows connectivity software has not been installed when you attach the Detective to the PC for the first time the new hardware bubbles in the lower right corner of the screen will indicate that device driver installation failed e Confirm the USB cable is good If connecting via a USB hub ensure that it is correctly connected an
50. bration simply unmark the box Set the auto calibration interval by tapping the Schedule lists and selecting the desired time of day as well as one of the following intervals Daily Weekly choose the Day of the week Monthly tap in the Day of the month field and use the soft keyboard to enter the day 5 2 1 1 Setup Requirements for Successful Auto Calibration For Auto Calibration to run successfully The Auto Calibration checkbox must be marked enabled The Detective must be in Survey Mode not in another monitoring mode The detector status must be Ready The unit must be properly connected to external power The appropriate source must be in position 52 5 ADVANCED SETUP 5 2 1 2 Auto Calibration During auto calibration the screen displays the time Adv 1 27 11 3 19 03 PM remaining to completion of the calibration as shown Setup Battery Time 191 min in Fig 54 This number is the real time for the calibra tion spectrum acquisition and is based on the peak count rate Auto calibration will not succeed until the calibration peak passes the quality test Calibration in progress Time remaining 5 minutes e Ifthe Detective does not detect the correct calibra tion source it will wait for approximately 2 minutes then posts an error message Tap Back to return to Gamma Count Rate 1306 cps the Survey Mode You can either use the existing calibration or perform a manual calibration The un
51. bserved CAUTION Indicates a hazard that could result in property damage if the safety instruction is not observed In addition the following symbols may appear on the product AN DANGER High Voltage N ATTENTION Refer to Manual Please read all safety instructions carefully and make sure you understand them fully before attempting to use this product Cleaning Instructions To clean the instrument exterior e Disconnect the instrument from the power source e Remove loose dust on the outside of the instrument with a lint free cloth e Remove remaining dirt with a lint free cloth dampened in a general purpose detergent and water solution Do not use abrasive cleaners CAUTION To prevent moisture inside of the instrument during external cleaning use only enough liquid to dampen the cloth or applicator Allow the instrument to dry completely before reconnecting it to the power source ix 1 INTRODUCTION The ORTEC Micro Detective portable nuclide identifier and its larger super sensitive family member the Detective 200 transportable identifier both use a high purity germanium HPGe detector for identification using gamma ray emissions The HPGe detector is cooled by a miniature high reliability mechanical cooler no liquid nitrogen is required The user interface is a high resolution color touch screen The result is a lightweight and rugged instrument that delivers unmatched identification and detection for t
52. busy i e not available to accept another pulse NOTE When the Dead Time exceeds 70 because you are near a very high activity source whether the source is an innocent or threat nuclide the detector is not able to process gamma radiation according to its performance requirements A red indicator in the upper right corner of the screen tells you to MOVE BACK from the source until the dead time drops below 70 so that the instrument can perform as specified See Fig 9 page 17 and its associated text This release of the Detective software does not use the Live Time and Real Time fields Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Adv GPS not communicating Adv 1 27 11 4 04 37 PM Setup Storage Space 25168 Setup Battery Time 196 min Live Time 0 15 06 Live Time 0 15 14 Real Time 0 15 37 Real Time 0 15 46 Dead Time 3 4 Dead Time 6 9 Bias Voltage OK Bias Voltage 2610 12V OK 12V 12 00 12V OK 12V 12 00 3 3V OK 3 3V 3 30 Detector Temp OK Detector Temp 116 00 Body Temp OK Body Temp 35 00 Cold Tip Temp OK Cold Tip Temp 114 00 Cooler Drive OK Cooler Drive 5 75 Ion Pump OK Ion Pump 3299 0 0 Gain Stabilizer 3 80 Gain Stabilizer 3 70 Cooler Runtime Figure 33 Status Dialog Figure 34 Detailed Status Dialog The remaining indicators are live i e they continuously update to reflect current hardware conditions For the first few seconds after you open
53. button on any screen that displays it NOTE When you start an identification the Search Monitor or SNM data in the spectrum memory are erased before the identification data are collected During data acquisition a simulated green LED flashes at the top left of the screen On units with GPS capability the top right of the screen alternates between the elapsed acquisition time for the current spectrum and the GPS coordinates In addition the neutron count rate and the gamma dose rate continually update At any time you can Pause the count and either Save the spectrum return to the Survey Mode screen or Continue counting You can save at any time during an identification and as many times as you wish The name of each saved spectrum file will include the time at which it was saved If your GPS has not received signals from GPS satellites for gt 30 days e g if it has not been in use or has been used continuously indoors it may take 10 15 minutes for the unit to update and begin displaying location information 26 3 RADIATION MONITORING If counting to a Real Time Preset the elapsed time readout counts from zero to the preset Fig 21 Once the preset time has elapsed the Pause button changes to Continue At this point you can either Save the spectrum or extend the count to add more data to the Figure 21 spectrum as described in the next section Elapsed Time 8 of 2000 3 2 2 Extending the Count to Preset To
54. contains the Conversion Gain Lower Level Discriminator and Upper Level Discriminator controls In addition the current real time live time and count rate are monitored at the bottom of the dialog In standalone mode the Detective operates at a fixed Conversion Gain of 8192 channels and the LLD and ULD are fixed at 40 and 8191 respectively However in MCA Mode the maximum conversion gain is 16384 channels Patent pending 80 8 USING THE DETECTIVE WITH A PC AND ORTEC SPECTRUM ANALYSIS PROGRAMS The Conversion Gain sets the maximum channel number in the spectrum If set to 16384 the energy scale is divided into 16384 channels This parameter is entered in powers of 2 e g 8192 4096 2048 1024 512 The up down arrow buttons step through the valid settings The Lower Level Discriminator sets the level of the lowest amplitude pulse that will be stored This level establishes a lower level cutoff by channel number for ADC conversions Because of the mechanical cooler we recommend a minimum setting of 40 in addition to leaving the LFR on at all times The Upper Level Discriminator sets the level of the highest amplitude pulse that will be stored This level establishes an upper level cutoff by channel number for storage 8 3 5 High Voltage Figure 83 shows the High Voltage tab which allows you to turn the bias voltage off and on and monitor the Actual bias You cannot adjust the bias voltage nor can you change
55. d functioning If this does not resolve the issue go to the next step In Control Panel open the Device Manager and check for an Unknown Device entry that disappears when you disconnect the Detective from the PC If such an entry exists reconnect the Detective right click on the Unknown Device select Uninstall and confirm that you wish to uninstall the instrument Disconnect the Detective from the PC e Download and install or uninstall and reinstall the ActiveSync or Windows Mobile Device Center software making sure you have downloaded the correct version restart the PC and start the connectivity program e Restart the Detective by pressing and holding the On Off button for 5 seconds until the screen goes dark and the instrument reboots When the DetectiveEX program has fully 72 7 TROUBLESHOOTING reinitialized reconnect to the PC You should see one or more new hardware bubble messages indicating the Detective was successfully detected e If these steps do not resolve the issue contact your ORTEC representative or our Global Service Center In the meantime if your spectrum files are stored in the instrument s My Documents folder you may wish to exit the DetectiveEX program use the computer s File Explorer program to copy the spectra to an SD card then mount the SD card in the PC and transfer the files that way 7 10 Troubleshooting MAESTRO Related Problems 7 10 1 MAESTRO Does Not Connect with the Detective
56. de Screen Messages 00000 ee 39 ADVANCED SETUP ota ad dp itr acre ORE dE ES 4 5 1 Adyanced Setup Pag T x doe ere ehe egy ei uad sc dde netae Saas tied 41 XN Wa i I MANENTE PH CEP E E TE E E 41 n2 Turm Cooler OMON iino ne WA ee CS DEAS EDO Qe Md 43 9 1 3 Calibrate Mantal 44 55 5e au ctor eee et be teat ae geeks bbc eicit 43 3 1 Sls Start the Calibration Lose ewe ee tae een k eee UEM EQ ue eke Ree 43 5 1 3 2 Apply the Improved Calibration 03 44 c4nno he eee kates shake ts 44 5 1 3 3 Perform a Background Measurement 2 000005 45 5 1 3 4 Restore Default 4o v oko R PRESE Go bps A UP C e e n 45 SUDO BEIGE rete a diced oed Ultima ok e asd tpe etai s Cae ml 46 5 14 Background cov ote orn Er ee tole edo mee dared ck Pedes 46 5 1 5 List Nuclides View Analysis Library 0 cece eee eee eee 46 3016 Recall Spectra su a eer eet eens ERS AM E AN ou aie tp pat i 46 5 1 6 1 Viewing Stored Specita orense ome eror Eee b T Ea ER 47 5 1 6 2 Viewing Stored Spectrum Reports llllellleleesn 47 Suis Dr RDO Lupe teme si e ames aah eee efe a dr ME aE o LU EN pa Lee 50 5 2 Adya ced Set up Page 2er he arc ber ra Ede Re M CHOPPER TUR aude ae 50 5 2 1 Calibration Settings and Auto Calibration 0 0 0 0 eee ee eee 51 5 2 1 1 Setup Requirements for Successful Auto Calibration 22 9 271 2 A t Calibralon oi pei ene at Deeps del e Rd aS e 53 03 2 Background Setting
57. dical Industrial Industrial Medical Industrial Industrial Industrial Industrial Industrial Medical Medical 37 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Identification ANSI Mode Classify Mode Sm 153 Innocent Medical Sm 153 shielded Innocent Medical Sn 113 Innocent Other Sr 82 Rb 82 Innocent Medical Sr 85 Kr 85 Innocent Industrial Sr 89 Innocent Medical Ta 182 Innocent Other Tc 96 Innocent Industrial Tc 99m Innocent Medical Te 132 Innocent Industrial Th 229 Innocent NORM Th Th 230 Innocent NORM Th Th 232 Innocent NORM Th T1 200 Innocent Other T1 201 Innocent Medical T1 202 Innocent Other T1 204 Innocent Medical Tm 170 Innocent Medical Tm 171 Innocent Industrial U 232 Threat Nuclear Uranium U 233 Threat Nuclear Uranium U 235 Threat Nuclear Uranium U 238 Threat Nuclear Uranium Unknown Peak Threat Other Unknown Beta emitter Threat Other V 48 Innocent Medical W 187 Innocent Industrial W 188 Re 188 Innocent Industrial Xe 127 Innocent Industrial Xe 131m Innocent Other Xe 133 Innocent Medical Xe 133m Innocent Medical Xe 135 Innocent Other Y 88 Innocent Other Y 91 Innocent Industrial Yb 169 Innocent Medical Zn 62 Innocent Medical Zn 65 Innocent Medical Zr 95 Innocent Medical 38 4 IDENTIFICATION MESSAGES AND RADIONUCLIDE LIBRARY 4 1 Comments on Classify Mode Messages The following explains the criteria for selected Classify ID Display Mode message
58. dioactivity monitoring modes see also the diagram in Fig 1 e Survey Mode In this home screen mode the Detective displays gamma count rate gamma dose rate meter and neutron dose rate meter where applicable a battery life indicator and an icon indicating the current power source e g internal battery power adaptor charger detector dead busy time and available disk storage Micro Detectives may be equipped with an optional moderated neutron detector the Detective 200 is not Other lists of nuclides can be supplied on special order Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Survey Home screen Count rate meters Search Count rate i Intense i top 10 gamma E Identify strip chart lines H Display j spectrum Figure 1 Detective Monitoring Modes e Identification Mode This mode is used to identify radionuclides from a stationary object of interest Data can be collected for an arbitrarily long period to ensure very low false positive rates Identifications can be displayed by nuclide name ANSI display mode or by classification Classify display mode You can optionally view the spectrum in real time as well as the 10 most intense gamma ray lines The identification results and analysis data can be quickly saved in the N42 and or ORTEC SPC file formats providing backup for the displ
59. e detector is cooled down to operating temperature cooldown nominally takes lt 12 hours for the Micro Detective and lt 24 hours for the Detective 200 At that point fully recharging the battery takes 3 4 hours The power adaptor provides external power to simultaneously start and operate the Detective as well as charge the internal battery Other external power supplied by external battery belt or 12 V automobile battery can start cool and operate the Detective as well as charge the internal battery When connected to an external battery the Detective relies on external power until the external voltage drops below 9 V It then switches to the internal battery The instrument makes the transition smoothly and there is no effect on the energy resolution If you begin with both batteries fully charged the sum of the two battery capacities will be achieved If the external battery has its own charge indicator this can be used to determine when the changeover will occur The Detective battery monitor indicates the available capacity in the internal battery and when the switchover occurs this indicator runs down in the usual manner The icon on the lower right corner of the Survey Mode screen s Status area shows whether the Detective is operating on a fully charged battery a charging battery or external power The three respective icons are shown in Fig 10 NOTE When all power is exhausted the high voltage and cooler shut down a
60. e dust cover be fastened in place at all times to protect the card slots from moisture and particulates Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Touchscreen SD card slot J under dust cover Stylus keeper magnetic Rear panel HPGe detector endcap On Off button Figure 3 Micro Detective Features 2 2 2 Rear Panel Connectors e INPUT POWER Supplies external power for operating the Micro Detective and recharging the internal battery USB port e amp Used to connect the Micro Detective s microprocessor to a PC to retrieve stored spectra with the Data ActiveSync option and to connect to the Micro Detective s MCA board with the Control MCA Mode option e Headphone jack C For audio dose and count rate warning signals The speaker volume can be adjusted as described in Section 5 2 8 Each connector includes a dust cover Keep them closed when using the instrument outdoors or where moisture or particulates might contaminate the connectors 2 2 3 The Internal Battery When the internal battery no longer holds a charge typically after 3 5 years contact ORTEC for the appropriate battery replacement kit See Chapter 10 for instructions on replacing it Note that the battery hatch is the only part of the Detective case that can be opened without voiding the warranty 10 2 2 4 The Touchscreen The Detective s high resolution color touchscree
61. e whenever the Detective is moved to a new site In addition a new background is required as the final step of calibration 53 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual The minimum acceptable data collection time for the background measurement is set on the Bkg Settings screen shown in Fig 55 NOTE For optimum counting statistics we strongly recommend a minimum 30 minute background acquisition the longer the better However the background settings screen also lets you set a minimum interval of 1 5 or 15 minutes 5 2 3 Identify Identification Mode Settings This dialog Fig 56 lets you set a counting preset choose to display radionuclides by category e g Industrial NORM Medical etc or by radioisotope name enable disable the expert LCX identification mode and turn color coded IDs on off 5 2 3 1 Real Time Preset To set a preset acquisition time for Identification Mode tap in the field to open the soft keyboard enter a count time from second to 9999999 seconds and tap Set In preset mode the Pause Continue button allows you to extend the count For more information and an example see Section 3 2 2 5 2 3 2 ID Display Mode Choose whether to display identifications by radio isotope name ANSI or by category Classify for instance Industrial Medical NORM Th Figures 19 and 20 on page 25 compare how the same detected radionuclides are displayed in
62. ective If you removed the card reinsert it and tap Save again If the card is defective replace it and tap Save If you do not have a replacement card you must stop the current identification session without saving in which case the spectrum will be discarded go to the Spectra dialog Section 5 3 3 3 and select a valid location If this error occurs when saving files to the computer s My Documents folder contact your ORTEC representative or our Global Service Center 7 2 If the DetectiveEX Program Stops The Detective incorporates a computer running the Windows Mobile operating system Occasionally the operating system will stop responding to external commands The power button is located below the display on the lower right corner of the computer s bezel Press and hold the power button until the computer shuts down and restarts this may take 10 20 seconds the mechanical cooler will continue running This will reset the operating system and auto matically relaunch the DetectiveEX application 7 3 If You Drop the Detective The Detective has been designed to be a rugged instrument and should survive reasonable levels of mechanical abuse It has been drop tested to destruction in development and is known to have a high degree of survivability to normal shock and vibration If the instrument is dropped Disconnect from any external power source disconnect any USB connection and press and hold the On Off button for
63. ed as in Fig 37 The time to completion is based on the peak count rate Calibration will not succeed until the calibration peak passes the quality test You can abort the calibration process at any time no changes will be made to the calibration coefficients i e the existing calibration will still be in effect 43 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Adv 1 27 11 3 18 53 PM Adv 1 27 11 3 19 03 PM Setup Battery Time 193 min Setup Battery Time 191 min 1 Place Co 60 in front of the Micro 1 Place Co 60 in front of the Micro Detective Detective 2 Start Calibration Now 2 Abort Calibration Calibration in progress Time remaining 5 minutes Gamma Count Rate 1327 cps Gamma Count Rate 1306 cps Te re Figure 36 Start Manual Figure 37 Wait for Completion Calibration At the end of the calibration period the Use Improved Calibration button will be displayed Fig 38 along with the actual energy of the calibration source peak For the factory defined sources the Centroid values should ideally be e Cs 661 62 keV e K 1460 75 keV In addition the screen will display the full width at half maximum FWHM an indicator of peak shape and the calibration adjustment Cal Adjust The calibration adjustment is the difference between the spectrum position of the calibration source s peak in the new calibratio
64. ervice Center To change the battery L Turn off the cooler and the Detective electronics by reversing the instructions in Section 2 6 2 1 e tap Advanced and Turn Cooler OFF Remove the eight 8 screws from the hatch with a 1 Phillips screwdriver and remove the hatch to expose the battery Note that these screws have tiny o rings that help maintain the instrument s water resistance don t lose them The end of the battery closest to the front of the Detective has a pull tab Gently pull it outward as if opening a book cover or door until the battery slips off the connector terminals located at the lower rear of the compartment Figure 90 shows the pull tab on the front side of the battery and the connector terminals on the lower back edge Battery terminals Front Back Figure 90 Front and Back of Internal Battery Guide the new battery onto the connector terminals and press it into place ensure the battery s pull tab is tucked into the battery compartment and cannot interfere with the o ring seal check the o ring to ensure it is free of particulates and fully seated in the hatch and replace the hatch CAUTION Properly resealing the battery hatch is crucial to maintaining the instrument s water resistance however do not damage or distort the hatch by overtightening its screws 95 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 5 Connect the Detective
65. es Do not modify the Program and Services transfer graphics or music to the Detective computer or change the Mobile Device Settings IMPORTANT Remember that the Detective is not to be used for purposes beyond the monitoring tasks described in the user manual and no changes should be made to the operating system settings Doing so could void your warranty Hover over File Management to expand its topics and click on Browse the contents of your device Fig 73 Windows Explorer will open and the Detective s computer will be listed as shown in Fig 74 Stored search and identification files will be located in the My Documents folder or the SD card s Data folder depending on the location set on the Spectra dialog see Section 5 3 3 3 Windows Mobile Device Center Sa Windows Mobile Device Center Se wy Home e G Home Quick Connect Windows V A Mobile Windows A Mobile I Set up your device M x Connect without setting up your device wf Connected wf Connected 3 Mobile Device Settings Figure 72 The Detective is Connected to the PC Figure 73 Choose the File Management Browse Option T 64 If your files are on the SD card select the Storage Card and open the Data folder If your files are stored in the My Documents folder select the root V entry then Documents Identification Mode spectra in the SPC format have a spectrum icon with
66. es it is important to enter the correct value for the pole zero cancellation Use the default value as the starting point To make a fine adjustment of the Pole Zero setting 1 Use a radioactive source that produces a well defined peak near the upper limits of the energy spectrum At low counting rates note the symmetry of the peak 2 Move the source closer to the detector to achieve much higher counting rates If the peak maintains the symmetry observed at low counting rates no further adjustment of the Pole Zero is needed If high counting rates generate a tail on the high energy side of the peak slightly decrease the pole zero value until the tail disappears If high counting rates generate 78 8 USING THE DETECTIVE WITH A PC AND ORTEC SPECTRUM ANALYSIS PROGRAMS a tail on the low energy side of the peak slightly increase the pole zero value until the tail disappears 3 Make a final adjustment to balance the symmetry of the peak as closely as possible to the symmetry observed at low counting rates This will result in the optimum pole zero adjustment 8 3 2 Amplifier 2 Figure 80 shows the Amplifier 2 tab Properties for LS MCB 137 which accesses the advanced shaping SATE Coo ee ig otage Ou atus eports resets controls including the InSight Amplifier Amplfier2 AmplfierPRO aDC Virtual Oscilloscope mode Rise Time Flattop idth 0 80 8 3 2 1 Shaping Controls Salers e Tit 0 00000 The many cho
67. extend the count after the first preset count interval has lapsed that is to collect more data for this measurement just tap the Continue button The extended count will start and the Continue button label will change back to Pause Acquisition will resume and will continue until you stop it by tapping Back or by pausing again The Elapsed Time readout at the top right of the screen will track the total count time NOTE Tapping Pause or Continue does not clear the spectrum Pausing simply suspends data collection When you continue subsequent data are added to the existing spectrum until you tap Back to return to the Survey Mode screen Returning to Survey Mode clears all spectrum and analysis data 3 2 3 Save Tap Save to write the current identification spectrum and results in the selected data storage location and file formats Sections 5 3 3 3 and 5 3 3 4 respectively You may save as many times as you wish during acquisition or pauses The name of each saved spectrum file will include the time at which it was saved The results are saved in the spectrum file s and can be viewed both on the Detective Section 5 1 6 and with ORTEC spectroscopy applications such as MAESTRO An identifying text description can also be entered if the Ask for Sample Description feature is enabled on the Spectra dialog Fig 68 page 60 To end without creating a spectrum file tap Back This immediately returns you to the Survey Mode 3 2
68. for Sample Description 2545 9 n Cro he Qo OP Ras 61 5 3 3 2 Default Description qned xpi tec Re ee ese Ste Eon Pte i dante gite 61 2 009 00 Data LOCHUDIF e rei P ie donne Modems had qe EE RUNDEN Caw tes 61 5 94 ile save FOIT serrr oiie nseni rea r p De i Ped e EE 61 3 29 23 Delete Stored Spectra oui no oh es he iS Bh Xe eb REDE EE RESP 62 6 FILE TRANSFER TO PC IN WINDOWS 7 XP AND 2000 esee 63 Ole WWI Se T Ln tini toa Rc OST UC PCR RE EU HEEL RA S a 63 6 2 Windows XP and 2000 sss laete ERES UR ENS CROPS BE a OR EO TR Rn 65 6 3 When File Transfer Is Complete 5 00 oc nine es ree Re Ee EE RE ERE E ded 67 T TROUBLESHOOTING eiat 24542355 Biche nett Doe bake ERE Ridouptehtpbp x 69 Ts Error Saving SPC File MesSaPe 2o ve oh eae Ret Genk ore Hees alot ee EE QE 69 72 tthe Detective X Program Stops npe terr e ee PRI pL ee ewke nt 69 TS If You Drop the DetecUye os que dw Vera Mob RE SX he aS ee ced a Su dte Sin 69 7 4 If the Detective Will Not Turn On sseseeeeeeeeeeee e 70 7 4 1 Starting from an Exhausted Battery 20 0 0 cece eee 70 7 5 If the Display is Lost or Posts a Display Disabled Message 71 7 6 If You Forgot the Password os einen cue Kanth eana nods bea Meee Rome RH cass 71 TT Calibration ISSUES mors exerc eK epe hg Queen we ke S E DI Weed 71 7 7 1 Calibration Takes Very Long to Complete or Does Not Finish at All 71 Micro Detective and Detective 200 Portab
69. formation on the Password screen including recovery from a lost password see Section 5 2 4 1 If the password was incorrect the Password invalid message will be displayed You may try to enter the password again or tap Back to return to the previous menu page If no password is set the Detective will go directly to the second Advanced Setup menu screen 50 5 ADVANCED SETUP Adv Location not determined Adv GPS not communicating Setup Storage Space 25017 Setup Storage Space 25100 Q Bkg Settings Identify Enter Password Dose Alarms xj2 sj afsfej7 s 9 Tabja jw ef c tf v uf iod ed LEIJ lt lt Previous Next gt gt CAP a sal ffo hli kt ut it Shift 2 x e v b n m ff DET J deel Figure 50 Enter the Password Figure 51 Advanced Setup Second Page 5 2 1 Calibration Settings and Auto Calibration Cal Settings Fig 52 allows you to turn the auto calibration check on and off decide how often to auto calibrate and either choose a factory defined calibration source Cs or K or define up to two of your own calibration sources with the Setup feature The source selected here also determines the source used for the manual Calibrate feature discussed in Section 5 1 3 The calibration routine checks and adjusts the Detective s electronics so that it correctly identifies the nuclides in the area This function searches for the calibration source peak in a window 30
70. g dialog tap Back For example tapping Back from the Advanced Setup dialog Fig 11 on page 19 returns you to the Survey Mode screen Fig 17 On any entry if you just tap Back without tapping any other keys the current value will be used that is no change will be made Therefore if you open a dialog by mistake you can just tap Back to return to the previous screen without changing any values e Ifatext or number entry is needed a soft keyboard will be displayed at the bottom of the screen Tap on the letters or numbers desired and then tap OK The Identification Display and Search screens have a Save button In Identification Mode and its accompanying Display Mode this saves the current energy histogram spectrum and any identification results In Search Mode a histogram of counts vs time is saved The storage location and file format s are selected on the Spectra screen Section 5 3 3 The Spectra screen also includes an Ask for Sample Description option that lets you save a text description comment with Identification Mode spectra 2 8 Customizing the Detective Settings In addition to cooling and calibrating the Detective there are a number of software parameters to be configured e Data storage location and spectrum file format s See Sections 5 3 3 3 and 5 3 3 4 page 61 We recommend that spectrum files be stored on SD card rather than on the Detective computer e Identify Mode settings Section 5 2 3
71. h Mode Search Mode tracks the Setup Battery Time 193 min total counts vs a specified period of time and presents Search Mode Collection Time the results in a strip chart emulation The total counts D in each time period are represented on the vertical scale and the time period always occupies one pixel width es ME on the display that is changing the dwell time does aeons not change the width of the lines on the strip chart Tap to select a dwell setting As soon as you choose a new setting it will go into effect 5 2 6 SNM Mode Settings Use this dialog Fig 63 to set the search acquisition Dwell Time for the SNM Search Mode Section 3 5 and the detection thresholds for Pu 239 U 235 and Figure 62 Search Time per Neutron radiation Horizontal Unit Selection 57 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Advanced users can also choose to enable and configure a detection threshold for the plutonium surrogate Ba 133 for training and site setup purposes see the discussion in Section 3 5 If the Ba 133 search is enabled four bar graphs will appear on the SNM Search Mode screen instead of just three see Fig 28 on page 32 The Dwell Time setting is the same for all SNM radioisotopes To set the Q Alarm Threshold for each gamma emitter tap the radioisotope name tap in the threshold field to open the soft keyboard enter the desired value and tap Set Figure
72. he ActiveSync dialog to open Windows Explorer and view the new connection and its menu tree P Figure 76 Connection Established From the host PC the Detective is i i i displayed as My Windows Mobile Based Device in the Mobile Device folder under My Computer Fig 77 Stored search and identification files will be located in the SD card s Data folder or the My Documents folder depending on the location set on the Spectra dialog see Section 5 3 3 3 These locations are indicated by arrows in Fig 77 66 6 FILE TRANSFER TO PC IN WINDOWS 7 XP AND 2000 B My Windows Mobile Based Device DAR ae File Edit View Favorites Tools Help Address g v Go Name Size Type Modified Databases System Folder O ConnMgr File Folder my Documents File Folder profiles File Folder Program Files File Folder 5D Card File Folder Temp File Folder windows File Folder 10 object s g Mobile Device Figure 77 Exploring the Detective Computer s Files from the ActiveSync Window 6 3 When File Transfer Is Complete To return the Detective to standalone service simply disconnect it from the USB cable 67 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 68 7 TROUBLESHOOTING 7 1 Error Saving SPC File Message This message is generated if you are saving spectrum and search files to SD card and 1 the card is removed during a Save operation or the storage medium is def
73. he needs of nuclear security Both instruments identify and classify radionuclides according to the requirements of ANSI N42 34 and other standards The radionuclide library for this release of the Micro Detective and Detective 200 is detailed in Chapter 4 e Micro Detective At 15 pounds the most portable member of the Detective instrument family can make an accurate and fast determination without the need for expert human intervention Nuclide identifications are based on the gamma ray peaks in the spectrum and on other aspects of the total spectrum Detective 200 This latest entry in the Detective family combines the software abilities of the Micro Detective with an HPGe crystal that is 2 9 times larger in area At 47 pounds two people are required to lift it Use the Detective 200 where ruggedness and sensitivity are more important than light weight for instance incident response including emergency portal monitoring public event surveys for illicit radioactive materials and configurations such as the ORTEC Detective Mobile Radiation Search System which can be deployed on aircraft road vehicles and naval vessels NOTE These instruments differ only with respect to their hardware e g the size and weight of the enclosure the HPGe crystal and mechanical cooler Therefore in the remainder of the manual the term Detective refers to both instruments except where noted 1 1 Monitoring Modes The Detective has five ra
74. ibute microphonic noise to the spectrum thereby degrading spectral resolution The LFR is also capable of reducing any periodic noise signal resulting from surrounding electronics and equipment or ground loops Presets Multiple presets can be set within MAESTRO for any or all of the following Real Time Stops data collection when the real time reaches this value in increments of 1 s e Live Time Stops data collection when the live time reaches this value in increments of 1 s e ROI Integral Integral count stops data collection when the sum of all ROI channels reaches this value e ROIPeak Peak count stops data acquisition when any ROI channel reaches this value maximum value of 2 counts 4 x10 e Data Overflow Terminates acquisition when data in any channel exceeds 2 1 2 x10 counts 9 1 Electrical and Mechanical Dimensions Maximum overall dimensions including handle Ge detector endcap neutron detector and shock absorbers e Micro Detective 37 4 cm L x 16 6 cn W x 27 9 cm H 14 7 in x 5 8 in x 11 in e Detective 200 42 7 cm L x 24 1 cm W x 38 7 cm H 16 8 in x 9 5 in x 15 2 in Weight e Micro Detective 6 9 kg 15 2 Ib Detective 200 21 3 kg 47 lb PPatent pending 90 9 SPECIFICATIONS Maximum Shock Tolerance 20 g An accelerometer inside the instrument tracks the maximum shock to which the Micro Detective or Detective 200 has been subjected and a shock in excess of 20 g will void the
75. ices of Rise Time let you precisely control the tradeoff between resolution and throughput InSight Starting with the default value you Stat Stop should increase the rise time for better resolution for expected lower count rates or when unusually high count rates are anticipated reduce Figure 80 Amplifier 2 Tab the rise time for higher throughput with somewhat worse resolution Use the up down arrows to adjust the Rise Time within the range of 0 8 to 23 0 us For the more advanced user the InSight mode allows you to directly view all the parameters and adjust them interactively while collecting live data To access the InSight mode go to the Insight section on the Amplifier 2 tab and click on Start The InSight mode is discussed in detail in the MAESTRO User s Manual Note that the Amplifier 2 tab graphically presents a modeled shape This is not a sampled waveform of the actual pulse shape only a model based on the current parameters The modeled shape is nominally a quasi trapezoid whose sides and top can be adjusted by the controls in this dialog While a particular control is being adjusted the model is updated to represent the changes made The Rise Time value is for both the rise and fall times thus changing the rise time has the effect of spreading or narrowing the quasi trapezoid symmetrically 79 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual The Flattop controls adjust
76. identification acquisition and saved as part of SPC or N42 spectrum files They are available as one of the reports discussed in Section 5 1 6 2 The Detective is equipped with IEEE 802 11b wireless connectivity Third party software can be used to implement wireless communications see our technical note P N 932735 Before using the Detective it must be set up and cooled and the calibration checked according to the steps in Chapter 2 1 3 How This Manual Is Organized This release of the Detective software combines the operator and administrator functions into one manual Chapters 2 and 3 cover topics germane to everyday radiation monitoring tasks The remaining chapters are aimed more at administrator level users and expert spectroscopists Operator oriented chapters Chapter 1 System features spectrum storage file formats and filename conventions Chapter 2 Unpacking startup operating limits initial configuration and user interface overview Chapter 3 Using the Detective to monitor and identify radiation sources e Chapter 4 Radionuclide library Administrator oriented chapters Chapter 5 Administrator level setup features Chapter 6 Transferring survey files to a PC e Chapter 7 Troubleshooting and error messages 1 INTRODUCTION Chapter 8 Using the Detective with a PC and ORTEC spectroscopy software Chapter 9 Specifications Chapter 10
77. ile with both gamma and neutron count rate with a B suffix is created The filenames are automatically generated Section 1 4 2 and saved according to the spectrum settings Section 5 3 3 To pause a search acquisition tap Pause The Pause button will change to Continue as shown in Fig 26 Tap Continue to resume the search The display will be continuous that is it will not show a gap that spans the paused time To go directly to the Identification Mode tap Identify If you have not already saved the current Search data they will be lost when you change modes Figure 26 Paused The Search Mode To end this search and return to the Survey Mode Fig 17 tap Back The current search data will be lost 3 4 Monitor Mode Use the Monitor Mode Fig 27 to identify radio nuclides while moving relative to object s of interest An example application is an ad hoc portal monitor where packages or people pass by the instrument This mode is also useful as a search tool where the instru ment is carried by the user in an effort to locate and identify a radioactive source The Detective collects one spectrum per second and analyzes a rolling window of the eight most recent spectra for radioisotope IDs This makes it particularly suited to situations where a completely different set of objects may be presented to the instrument in that time interval Each ID s background is color coded according to its
78. ired every work session and that require some knowledge of gamma ray spectro metry and or radiation monitoring The Detective saves all settings and uses them until the next time they are changed Figure 32 shows the first page Tap the Next gt gt and Previous lt lt buttons to moves between the three menu screens e Tap Back to return to the Survey Mode screen NOTE You can set a password on the Settings screen Section 5 2 4 1 to restrict access to the second and third pages of the Advanced Setup menu The first Advanced Setup page can be accessed by all users allowing them to view the hardware status perform calibrations and background ADVANCED SETUP Adv 5 22 11 6 14 27 PM Setup Battery Time 132 min Turn Cooler OFF Calibrate Background List Nuclides Recall Spectra Next gt gt Tl MU About Figure 32 Advanced Setup First Page measurements turn the cooler on off etc as described in the following section 5 1 Advanced Setup Page 1 5 1 1 Status The Status dialog Fig 33 allows you to monitor the hardware diagnostic and data acquisition parameters The default view is a simplified heads up OK ERR readout However you can toggle between the simplified view and the actual readouts Fig 34 by tapping three times in the lower left corner of the screen The Dead Time is related to the current gamma count rate and indicates the percentage of time the Detector is
79. it will auto calibrate at the next scheduled interval Te Ir To interrupt auto calibration tap the Abort button S Figure 54 Auto Calibration in Progress then Back to return to Survey Mode When you return the Detective to the auto calibration func tion calibration will immediately restart from the beginning The unit will continue trying to calibrate until the calibration peak passes the quality test If you disconnect the instrument from the external power source during auto calibration the routine will attempt to run to completion Tap on the Abort button to interrupt auto calibration then Back to return to Survey Mode When the unit is reconnected to external power auto calibration will start at the next scheduled interval See also the calibration troubleshooting discussion in Section 7 7 page 71 5 2 2 Background Settings Use this screen to pre configure the minimum acceptable background radiation measurement time for the Background command Section 5 1 4 The instrument requires periodic measure ment of a site s background radiation to reduce false alarms on K and other naturally occurring radioisotopes from building materials such as concrete The background file is saved on the computer in Program Files DetectiveEX It is stored as an ORTEC CHN spectrum file named background chn and is overwritten each time the background is updated Ideally a new background measurement should be mad
80. ive Settings ssa me hex x xn Rex s 18 2 9 Checking the Calibration au ectosce tta eig C ROC AGE Sena ned Re et Caine Soma Roe ewes 19 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 3 4 5 2 10 Running A New Background After Calibration 0 0 0 0 eee eee ee 22 RADIATION MONITORING 35 anexzuikekees e qatobr wx a oves Pe xr o xe EX ds 23 3 1 Survey Count Rate Dose Rate Mode 0 cece ee eee nee 23 3 2 WOM CANON Mode 9c aane E eSa LOU aU Ea Roeser ASAA Lion 25 3 2 ls Start the Identification coeno Ere eO PRO REN eee Kee PES EET a a 26 3 2 2 Extending the Count0 Presel 2e kamen e ree ae Vokes RSEN ewe 27 SEN EN ULT EE E E E E E EEEE E EE E E eat as 27 3 2 4 View Found Nuclides List for Classify ID Display Mode 27 3 2 5 Intense View Highest Intensity Spectrum Lines 24 28 3 2 6 Display Spectrum Le teen de EN rhon RERO ee een E RR AEE OE draco 29 3 2 6 1 Display Controls o kon sedeo Fert ORE ECRIRE 29 Fe OSearelb MOUSE citare Sat pwc eae bea Rt OP Rata doo Deb uar Mta E ipd iid 30 S d Montor NOU ta aia sins cain x tron eet AR E ossa Qr dare Gy AA ROR ae repos ts 31 De SNM Search Mode sua e redet eeu eea dae Mew ee QUE docs pw aput due Abeer 32 IDENTIFICATION MESSAGES AND RADIONUCLIDE LIBRARY 35 4 1 Comments on Classify Mode Messages 0 0 cece eee eee eee 39 4 1 1 Comments on Found Nucli
81. ive internal battery does not have enough power to cool down the detector from room temperature therefore external power is required In addition an exhausted internal battery should be charged for 2 hours before the Detective is cooled using external power If you are using a standard 12 V automobile battery as the external power source the detector cooling can significantly discharge the battery Cooler startup without external power cause operational anomalies see troubleshooting Section 7 5 You can turn the cooler off for 10 20 minutes without significantly warming the detector As soon as the cooler is restarted the Detective typically posts the Ready status within a few seconds The cooler can be restarted at any time without harming the detector crystal regardless of whether the detector is warm partially cooled or cooled to the operating temperature range 5 1 3 Calibrate Manual This command starts the manual calibration routine which checks and adjusts the Detective s electronics so that it correctly identifies the nuclides in the area The calibration source to be used must be pre set within the Cal Settings function as discussed in Section 5 2 1 5 1 3 1 Start the Calibration Position the indicated calibration source in front of the detector window then tap the Start Calibration Now button shown in Fig 36 The button name will change to Abort Calibration and the time remaining to complete calibration will be display
82. keV wide centered on the peak channel for the selected source Once the peak is located and its net area reaches 4000 counts the detector amplifier s fine gain setting is adjusted for optimum performance Unlike manual calibration auto calibration does not delete the existing background chn file so there is no need to take a new background measurement afterwards To choose a calibration source tap the source list at top left and make your selection To define a calibration source up to two tap the Setup button to open the screen shown in Fig 53 Tap in the Source Name field and use the soft keyboard to enter the name tap in the Energy Peak field and enter the peak energy in keV then tap Back to return to the calibration settings screen The new entry will be available on the source list 51 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Adv Location not determined Adv GPS not communicating Setup Storage Space 25014 Setup Storage Space 25173 Auto amp Manual Calibration Source Source Name Energy keV Cs 137 661 60 E 46075 1332 50 Auto Calibration Schedule ony gt at on day of the month ECAR Shift z x J c vf b nm J Jt 7 MSIE TUAE Figure 52 Set Up the Auto Figure 53 Enter the Peak Energy Calibration Feature for a Calibration Source e To use the auto calibration feature mark the Enable box by tapping it To disable auto cali
83. le Nuclide Identifiers User s Manual 7 7 2 The Centroid FWHM or Calibration Adjustment Value Has Changed Dramatically Since the Last Calibration 0 0 0 0 eee ee eee 71 dono GPS ISSUES Sena Eve ek ea e E de Sak eke eee Sp Mada se es dao dua 12 7 8 1 Delayed Display of Location Coordinates llllllllleleesns 72 7 8 2 GPS Not Communicating o oie eee EOS PS e ER na RUPEE aud arte 712 7 9 Windows Connectivity Problems 25 uev ree PROXIME D RC E PEE NES 72 7 10 Troubleshooting MAESTRO Related Problems 0 0 2 enea 73 7 10 1 MAESTRO Does Not Connect with the Detective 173 7 11 Other Problems with the Detective 1 62 vy 12542566 wee ikea SN ASI EX ESAE EPYS 19 8 USING THE DETECTIVE WITH A PC AND ORTEC SPECTRUM ANALYSIS PROGRAMS e oon ur ESPERE dca dcn pia C pm ER EDS 75 8 1 Connecting the Detective toa PC uides rete oo oA RES HR we Deedee eae a 75 8 2 Quantitative Analysis of Detective Spectra in GammaVision 32 and ISOTOPIC 32 76 8 3 MCB Properties in MAESTRO S os eee peas remet P Rd Ee NU Roter e Sade es T1 S ZUnpHleEes civ uR ae e a he ea eRe E a eG eed Edi d 78 OMM CC mM PD P cing Dae O UU mane Destin NR aria 78 5 12 Pole Zero Adjustment se ee Sek eee bx e be t wee ee ee 78 Die AIIDIEEIGE Z os serstodtot a rer Coughs dom E pedo EU RS dor qe dc dta qom e 79 8 3 2 1 Shaping Controls sa ede i n E EE REUS En ooo Ret b CERO d 79 5 3 3 Ample PRO For eats ino ea heo a
84. lity and low voltage power directives 9 2 Connectors USB e amp Rear panel Universal Serial Bus connector with dust cover for communication with PC for file transfer with the Data ActiveSync setting and for use as an MCA with the Control MCA Mode setting Headphones Micro Detective only Rear panel female connector with dust cover accepts standard male headphone jack Headphone volume controllable from the touchscreen Note that the audible high dose rate alarm sounds whether or not headphones are connected to the unit This alarm is not routed through the headphones and its volume is independent of the headphone volume setting 91 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual INPUT POWER e Micro Detective Rear panel external power input with dust cover 12 17 V dc 60 W or from battery or ac power adaptor charger Detective 200 Rear panel external power input with dust cover 12 17 V dc 30 W or from battery or ac power adaptor charger 9 3 PC Prerequisites In addition to completely independent standalone operation both Detective units can also be operated as a benchtop MCA in conjunction with ORTEC CONNECTIONS software such as MAESTRO by connecting them to the USB port of any PC running 32 bit Microsoft Windows 7 XP Professional SP3 or Windows 2000 SP4 9 4 Shipping the Micro Detective or Detective 200 To avoid damaging the cooler and where applica
85. lity to make claim with the shipper Instruments not in warranty should follow the same procedure and ORTEC will provide a quotation Damage in Transit Shipments should be examined immediately upon receipt for evidence of external or concealed damage The carrier making delivery should be notified immediately of any such damage since the carrier is normally liable for damage in shipment Packing materials waybills and other such documentation should be preserved in order to establish claims After such notification to the carrier please notify ORTEC of the circumstances so that assistance can be provided in making damage claims and in providing replacement equipment if necessary Copyright 2012 Advanced Measurement Technology Inc All rights reserved ORTEC is a registered trademark of Advanced Measurement Technology Inc All other trademarks used herein are the property of their respective owners ADDITIONAL WARRANTY STATEMENT Please note that the integrated computer that controls the Detective is intended exclusively for the tasks detailed in this User s Manual Using this computer for any other purpose could void your warranty In addition the Detective contains no user serviceable parts Except for the battery hatch on the left side panel which can be opened when the battery requires replacement breaking the seal on the case voids your warranty The Detective should be opened only by ORTEC authorized service personnel
86. ll be disabled until the background measurement is completed and accepted 46 5 ADVANCED SETUP Adv 1 27 11 3 38 47 PM Adv 1 27 11 4 12 49 PM Setup Battery Time 196 min Setup Battery Time 193 min Gamma Rate 38 440 cps Nuclides Neutron Rate 0 075 cps GMT Rate 0 130 cps Elapsed Time 12 43 min Am 241 shielded Ar 41 As 72 As 74 At 211 Au 198 Ba 133 B Jl In A a Figure 40 Collect Background for Figure 41 View the Radionuclide At Least the Specified Minimum Library Time 5 1 6 1 Viewing Stored Spectra To display a particular spectrum file tap the filename then tap Choose The histogram will be displayed along with the filename as shown in Fig 43 The spectrum display controls are discussed on page 29 To view the associated reports see the next section 5 1 6 2 Viewing Stored Spectrum Reports Identification Mode spectrum files include both the spectrum and information on the radio nuclides found during the identification session When you display a stored spectrum you can view this information by tapping the ID button below the spectrum display This will open the ID Report screen Fig 44 Tap the listbox at the top of the screen to access the list of Found Nuclides Fig 45 Suspect Nuclides for LCX Mode spectra only Fig 46 Top Lines Fig 47 and GPS Fig 48 some of the reports may contain no entries Tap Back to return to Advanced Setup 47 Micro
87. ment has a valid calibration and background the Detective typically returns to Ready status within a few seconds The cooler can be restarted at any time without harming the detector crystal regardless of whether the detector is warm partially cooled or cooled to operating temperature While the Detective cools we recommend that you familiarize yourself with the user interface and configure the instrument s software settings Until you perform the initial calibration and background Sections 2 9 and 2 10 the Identify and Monitor modes are disabled however the gamma and neutron count rate meters function as passive monitors 16 2 GETTING STARTED 2 The User Interface 2 7 1 Instrument Status Indicators e Date Time GPS Location Dead Time Battery Status and Storage Space The top line in the upper right corner alternates between the date time latitude longitude and detector dead time The lower line switches between from the battery status charging vs time to full discharge and the number of spectra that can be stored in the currently selected storage location See Fig 8 When close to hot gamma ray sources the HPGe detector can become so busy processing radiation pulses that its analysis algorithm does not function as designed and specified To avoid this problem when the detector dead busy time exceeds 7096 a red Move Back message is displayed in the upper right corner of the screen Fig 9 and persi
88. mma Rate 38 440 cps Neutron Rate 0 075 cps Acquisition continues until you tap either Save or GMT Rate 0 130 cps Cancel which returns you to the Advanced menu Elapsed Time 12 43 min If the measurement is canceled before that minimum time has elapsed the software does not accept i e save and use the new background spectrum If necessary you can obtain a valid background later however the background must be performed 225i before the unit is ready for field use See the instructions in Section 5 2 2 Fi 16 Collect Back d fi When you return to the Survey Mode screen the OS the Specified Minimum status will now indicate Ready Time xxx The Detective is now ready to use 22 3 RADIATION MONITORING Once the Detective displays the Ready status the calibration has been checked and the background has been measured the instrument is ready for use This chapter tells you how to use the Survey Identification Search Monitor and SNM Modes However we also recommend the following reading e Chapter 4 lists the messages the Detective displays when it identifies radionuclides Chapter 5 discusses the functions on the Advanced menu These administrator level commands allow you to set up and adjust a number of detector functions such as turning on the mechanical cooler selecting the location where spectrum files will be stored choosing the dose rate units to be displayed
89. n and the position of the same peak in the current calibration expressed in energy as a percentage of the actual peak energy 5 1 3 2 Apply the Improved Calibration When the calibration measurement is complete and the Use Improved Calibration button is displayed choose whether or not to use this new calibration Usually the proposed change in calibration is quite small and sometimes it is even zero If it is larger than 0 3 the cause should be investigated To use the new calibration tap Use Improved Calibration Tf the calibration fails an error message will be displayed For more detailed calibration troubleshooting see Section 7 6 44 5 ADVANCED SETUP 5 1 3 3 Perform a Background Measurement If you accept the improved calibration the manual calibration routine deletes the existing back ground file Therefore the final step of the calibration process is to re measure the background as indicated in Fig 39 Remove the calibration source tap the Run a Background button then refer to the instructions in Section 5 1 4 NOTE When the previous background is no longer valid the Background Invalid message is displayed on the Survey Mode screen The Identify and Monitor buttons become inactive and the system will not post radionuclide IDs However the gamma and neutron count rate meters on the Survey Search and SNM Mode screens continue to function normally Tap Back to return to the Advanced Setup dialog Adv
90. n makes it easy to view data acquisition and settings Fig 4 as well as change the instrument settings To select a function tap it with your finger or the stylus When an alphanumeric input is needed a soft keyboard is displayed at the bottom of the screen see Fig 50 on page 51 2 2 5 Attaching the Carrying Strap The carrying strap Fig 5 should be installed on the top diagonal corners of the Micro Detective that is looking down on the display panel the strap should be anchored to the left front and right rear corners or vice versa If you wish to change the factory orientation use a 5 32 in hex 2 GETTING STARTED Survey 1 27 11 3 58 40 PM Mode Battery Time 198 min Y Neutron Count Rate 1 cps y y Dose Rate 0 01 mrem h y Count Rate 691 cps Status READY Cs a Figure 4 The User Interface Identify wrench to exchange positions of the strap hanger studs and the regular hex head screws Thread the strap hanger stud through the hanger bracket followed by the two spacers then insert the stud into the Micro Detective and tighten until the hanger bracket resists rotation but still turns do not overtighten Figure 5 Carrying Strap Attachment spacers bracket 11 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 2 3 The Detective 200 Figure 6 shows the Detective 200 s major features Its front a
91. n the Windows desktop tap the Start square in the upper left corner of the screen then tap Settings In the Settings dialog tap the System tab then select Regional Settings On the Region tab select English United States from the listbox On the Number tab choose the period for the Decimal symbol and the comma for the Digit grouping symbol On the Time tab select h mm ss tt as the Time style and the full colon as the Time separator On the Date tab use M d yy as the Short date the forward slash as the Date separator and the Long date format dddd MMMM dd yyyy Tap the upper right OK circle then the upper right X circle to return to the Windows desktop Restart the Detective as described in Section 7 2 For further assistance contact your ORTEC representative or our Global Service Center 74 8 USING THE DETECTIVE WITH A PC AND ORTEC SPECTRUM ANALYSIS PROGRAMS The Detective is intended for completely independent operation with no PC required However when you connect it to a PC running recent ORTEC CONNECTIONS spectroscopy applications such MAESTRO v6 05 or later or our GammaVision 32 Gamma Ray Analysis and MCA Emulator v6 07 or later you can use the it as a high performance HPGe spectrometer digital MCA Note that only limited hardware adjustments are allowed The Detective prevents changes to the hardware settings in MAESTRO that might affect the unit s performance as an identifier
92. nd rear panel features are identical to the Micro Detective s with the following exceptions and it uses the same internal battery e It has no headphone jack or audio capability e The waterproof INPUT POWER connector is position keyed and secured with a screw collet When not connected to external power seal the connector with its threaded waterproof cap The USB port has a waterproof threaded cap that should be left in place when the port is not in use WARNING At 21 3 kg 47 lbs the Detective 200 requires two people to lift it In addition it is significantly nose heavy Keep this in mind when lifting and positioning the unit SD card slot under Touchscreen and dust cover ee On Off button Stylus keeper f Handle magnetic HPGe detector Rear panel endcap Figure 6 Detective 200 Features 12 2 GETTING STARTED 2 4 Internal vs External Power The Micro Detective and Detective 200 use power in these ways The internal battery provides gt 3 hours of operation for the Micro Detective and gt 2 hours of operation for the Detective 200 The internal battery can start the cooler however it cannot completely cool the detector from room temperature external power is required The tran sition from internal to external power is automatic and does not interfere with data collection When recharging an exhausted internal battery keep in mind that the battery does not begin charging until after th
93. nd the detector begins to warm The Detective cannot be used again until the unit has cooled enough that the high voltage automatically switches on and the Status indicator changes back to READY 2 5 Operating Cautions and Notes Remember that there are no user serviceable parts inside the Detective Opening the Detective except the battery hatch to replace the internal battery voids the warranty 13 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 14 The cooler and detector are shock sensitive with a maximum tolerance of 20 g so be careful not to drop the unit A shock in excess of this value will void the warranty The Detective s enclosure is sealed with polymer o rings and gaskets if all seals are in place the instrument can survive brief immersion in water However care should generally be taken to protect it from prolonged or heavy rainfall and from immersion Heat is dissipated from the cooler via the Detective baseplate therefore do not place the unit in mud loose soil or sand standing water dense grass or on thick carpet Wrap or cover the unit to keep it clean and dry Where possible avoid placing it on warm surfaces such as sun heated pavement for extended periods The front panel memory card slots and rear panel connectors include dust caps keep the card slots and all unused connectors capped The power adaptor charger should not be exposed to water When in use it sh
94. nization s operating procedures before using LCX Mode 24 3 RADIATION MONITORING 3 2 Identification Mode The Identification Mode lists the radionuclides present and displays them in one of two ways according to the ID Display Mode selected on the Identify setup screen Section 5 2 3 2 There are two ID Display Modes ANSI Mode This is the default mode Radionuclide IDs are listed on a background color coded according to their status as innocent green suspect yellow LCX Mode only or threat red The color background can be suppressed Section 5 2 3 4 e Classify Mode In this mode the list of detected radionuclides are listed according to category instead of radionuclide name e g Medical Industrial Nuclear Plutonium Other Figures 19 and 20 compare the same three IDs as displayed in the ANSI and Classify modes respectively In each figure the Detective has found one industrial nuclide unshielded Am innocent and two uranium isotopes U and U threats ID Mode Location not determined ID Mode Location not determined Neutron Count Rate 0 cps y Dose Rate 0 73 wSv h U 235 U 238 Th 232 Display Figure 19 Identification Mode Screen in ANSI ID Display Mode Storage Space 49029 Storage Space 49029 Neutron Count Rate 0 cps y Dose Rate 0 79 wSv h Found Nuclear Uranium 2 Found NORM
95. nt rate vs time The File Save Format feature Fig 70 lets you choose to generate these files as ORTEC file formats ANSI N42 42 format files compatible with ANSI N42 42 2006 or both For more detailed information on file formats see Section 1 4 2 61 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Adv 2 20 11 4 06 21 PM Setup Battery Time 178 min Ask for Sample Description Default Description Data Location My Documents Y My Documents F Storage Card i Figure 69 Select the Data Location 5 3 3 5 Delete Stored Spectra To delete a stored spectrum file tap Delete This opens the Choose File dialog Fig 71 displaying the Data Location listbox and the list of spectra in the current location Select the desired data location then scroll up and down through the list of spectra Files in SPC format are listed first in descending alphabetical order followed by N42 files in descending alphabetical order as shown in the figure To delete a spectrum tap the name and then tap Choose You will be asked to either confirm or cancel the deletion Tap Back when finished deleting spectra IMPORTANT There is no undo for this action 62 Adv 2 20 11 4 06 21 PM Setup Battery Time 178 min L Ask for Sample Description Default Description So Data Location My Documents v File Save Format Both ORTEC and ANSI Y ORTEC
96. ol The remedy is reasonably straightforward if inconvenient a pump and bake of the instrument is required at an ORTEC service center Fortunately you can easily avoid this problem We strongly recommend that instruments used only occasionally be turned on once a month fully cooled to Ready status and allowed to run for at least 48 hours Doing this starts the ion pump and activates the internal getters ensuring that the vacuum is maintained in good condition As well as maintaining the vacuum this procedure keeps the system battery topped up and also provides peace of mind that the system will cool when required This is not to be confused with a vacuum leak although both result in a degradation of the vacuum 93 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 94 10 CHANGING THE INTERNAL BATTERY The typical service life of the Detective s 14 4 V lithium ion battery is 3 5 years When the internal battery no longer retains a charge it must be replaced with the appropriate ORTEC battery replacement kit This is a straightforward operation that takes just a few minutes so the detector does not significantly warm up during the procedure When connected to external power the detector will be cooled to operating temperature first then the new battery will charge typically reaching full charge within 3 4 hours For more information contact your ORTEC representative or our Global S
97. on Mode passwords on page 76 at the end of DETH 005 P22406B PHA Section 8 1 Use the Firmware Revision field to Figure 84 About Tab determine the instrument type and firmware version This parameter is formatted DE7X nnn where Xis H for the Micro Detective or Jfor the Detective 200 and nnnis the firmware version In the accompanying illustration DETH 005 indicates a Micro Detective running firmware v5 You can also use the About tab to view this information for SPC format spectra downloaded from the Detective 8 3 7 Status Figure 85 shows the Status tab Ten Properties for LS MCB 137 parameters are continuously moni S z di i Satisfact tat Amplifier Amplifier 2 Amplifier PRO tore in real time satistac DE eras High Voltage About Status Reports Presets is reported as OK or a numerical value A failure is reported as ERR zl gi or a descriptive message Use the list M Gamma Dose Rate 0 05 uSv h Ge boxes to select any six parameters Detector Temperature OK to be displayed simultaneously on e Battery Voltage 15 55 Volts the Status tab You can change the 8 ba Battery Time Remaining 204 Min selected parameters at any time Y Cooler Body Temperature OK The monitored parameters are Detector State of Health Figure 85 Status Tab reported as OK or ERR e Gamma Dose Rate reported in uS v h and indicating whether this reading was made with the detector Ge for low dose rates or the Geiger
98. ot be viewed at any time by anyone we additionally recommend that the field operator not save them NOTE If spectra are saved whether or not the Display Mode is locked a properly configured PC and MAESTRO can still be used to view the saved spectra In such cases the Detective and any memory cards containing spectra must be secured from unauthorized access according to your site operating procedures 56 5 ADVANCED SETUP 5 2 4 3 GPS Port The factory setting is COM2 do not change it 5 2 4 4 USB Port This feature allows you to control whether the Detective functions as a standalone identifier or as a full featured MCA with high resolution HPGe Detector Data ActiveSync This setting is used for normal standalone Detective operation This is also the setting used to transfer search and identification spectra to a PC via Windows Mobile Device Center Windows 7 or ActiveSync Windows XP and 2000 In this mode you do not have access to the MCA hardware functions Control MCA Mode This setting gives you access to the Detective s high performance HPGe detector and MCA for use with MAESTRO and other CONNECTIONS applications as described in Chapter 8 In this mode all normal Detective functions are disabled When you select this option the screen appears as shown in Fig 78 on page 75 5 2 5 Search Mode Settings This dialog Fig 62 allows you to set the data Collec Adv 1 27 11 4 06 58 PM tion Time for Searc
99. ould ideally be placed on a dry flat dust free surface When not in use it should be disconnected from the ac power supply and covered to protect it from moisture and dirt Any covering must be completely removed before reconnecting the power adaptor to the input power source Make sure the recharging connector on both the Detective and power adaptor are clean and dry before connecting to an the input power supply Both instruments are designed for use at temperatures between 10 C to 40 C at a relative humidity lt 90 at 35 C non condensing When cooling a warm Micro Detective in ambient temperatures gt 30 C 86 F use the Micro Detective Series Cooldown Pad according to the instructions in its technical note P N 931061 The Detective 200 does not require a cooldown pad The HPGe detector assembly is designed to be continuously cooled If the instrument is turned off and allowed to warm between uses it must be cooled and brought to operational status Status Ready for at least 48 hours every month Failure to do this may result in degraded performance or cooling system failure Read Section 9 5 To avoid damaging the cooler and where applicable to comply with transportation regula tions be sure the cooler is turned off before shipping the Detective see Section 2 6 2 The unit can be shipped as soon as the cooler is turned off there is no need to wait until the detector warms up For best results we recommend that you
100. our uSv hr or millirem per hour mrem hr The Dose Units status message updates immediately to reflect the new dose rate unit To change units tap either the nSv h or mrem h radio button to mark it 5 2 8 Adjust Audio Volume Micro Detective only This feature Fig 66 lets you adjust the speaker and headphone volume or Mute all audio signals The Gamma Sensitivity slider sets the number of gamma counts per audio click When finished tap Back Adv GPS not communicating Adv Dead Time 2 09 o Setup Storage Space 25168 Setup Battery Time 201 min C Mute All Sounds Clicker Volume y Dose Rate s Threshold 1000 set Units pSv hr mrem hr Gamma Sensitivity 10 10 000 Neutron Rate CPS Threshold Figure 65 Set the Dose Rate Units Figure 66 Adjust the Audio and Alarm Thresholds Volume 59 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 5 3 Advanced Setup Page 3 To access the third Advanced menu page Fig 67 tap the second page s Next gt gt button 5 3 1 Remote This screen is used by other ORTEC applications such as the Detective Mobile system 5 3 2 Exit The Exit button is used to close the DetectiveEX soft ware application and go to the computer operating system This is not normally used but could be needed from time to time A confirmation dialog is displayed before the program exits To retu
101. ow Fig 12 button e While calibration is in progress Fig 13 a Time remaining readout should be displayed This interval will depend on the strength and proximity of your calibration source 19 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Adv 5 22 11 6 14 27 PM Adv 1 27 11 3 18 53 PM Setup Battery Time 132 min Setup Battery Time 193 min 1 Place Co 60 in front of the Micro Turn Cooler OFF Detective 2 a Start Calibration Now Calibrate Background List Nuclides Recall Spectra Gamma Count Rate 1327 cps Next gt gt Mtr t MU Figure 11 On the Advanced Figure 12 Tap the Start Calibra Menu Tap the Calibrate Button tion Now Button NOTE Ifthe Time remaining readout is not displayed the calibration source is too weak or too far from the detector to complete the calibration or you may be using the wrong source Tap Abort Calibration correct the situation and restart the calibration See also the troubleshooting steps in Section 7 7 page 71 At the end of the calibration period the Use Improved Calibration button will be displayed along with the calibration and peak shape indicators for the new measurement Fig 14 The choice is yours whether to use this new calibration or not To accept it tap Use Improved Calibration Usually the proposed change in calibration is of the order of the one shown in Fig 14 If it is la
102. page 54 tells how to select the ID Display mode ANSI vs Classify enter an optional real time count preset and configure this mode s other display and analysis features Section 3 2 page 25 discusses Identify Mode in detail and provides guidance on the settings e Dose rate units and alarm thresholds Section 5 2 7 page 59 discusses the default gamma and neutron count rate alarm thresholds you may set lower thresholds if you wish You can also set the displayed gamma dose rate units to mrem hr or uS v hr e Password restrict Advanced settings and or the spectrum display optional The Settings screen Section 5 2 4 1 page 56 lets you password lock the second and third Advanced menu screens to minimize unintended settings changes It also lets you block users without password access from viewing Identify Mode spectra and stored SPC spectra 18 2 GETTING STARTED e Optional Auto Calibration This feature lets you schedule automatic calibration of an instrument that is connected to external power and in proximity to an appropriate calibration source See Section 5 2 1 page 51 e Search Mode setup The horizontal axis in this mode can be adjusted See the Search Mode discussion in Section 3 3 SNM Mode setup Adjust the dwell time and SNM nuclide detection thresholds for this mode See the discussion in Section 3 5 2 9 Checking the Calibration Once the Detective has cooled and the Background is invalid s
103. r position or channel 0 is the leftmost corner of the display or channel 8192 is the rightmost corner of the display Lin Log The Lin button changes the vertical display to linear mode and automatic vertical limits The Lin button changes to Log in the linear mode Tap Log to change the vertical scale to log mode Pause Continue If the Detective is acquiring data you can pause the data collection and resume it later Tap Pause to stop collection The button will change to Continue in the pause mode Tap Continue to resume the data collection 3 3 Search Mode y Dose Rate 0 01 mrem h lu 82b Figure 25 Strip Chart Emulation With Autoscaled Y Axes the gamma ray data are scaled from 0 to 1000 30 From the Survey Mode screen tap Search The search will continue until you stop it but only the most current count rate values the newest 221 are displayed and can be saved To save the displayed search results tap Save If the Ask for Sample Description option is enabled on the Spectra setup screen see Fig 68 page 60 a soft keyboard will open so you can enter a description for this data acquisition tap Set to complete the save If saving in ORTEC CHN format two count rate strip chart files are saved for each search one for the 3 RADIATION MONITORING gamma count labeled with a G suffix and one for the neutron count with an N suffix For ANSI N42 files one f
104. rger than 0 3 the cause should be investigated see Section 7 6 The final step is to take a representative background measurement Figure 15 shows the final calibration screen Remove the calibration source tap the Run a Background button then refer to Section 2 10 below NOTE Anew background measurement is required after calibration If you tap Back without accepting the new background only the gamma and neutron count rate meters will function Identify and Monitor Modes will be disabled until another you run and accept a new background For additional information on calibration and calibration setup see Sections 5 2 1 and 5 1 3 20 Adv 1 27 11 3 19 03 PM Setup Battery Time 191 min 1 Place Co 60 in front of the Micro Detective 2 C Aort Calibration Calibration in progress Time remaining 5 minutes Gamma Count Rate 1306 cps a ee Figure 13 Status of Manual Calibration 2 GETTING STARTED Adv 1 27 11 3 24 34 PM Setup Battery Time 196 min 1 Place Co 60 in front of the Micro Detective 2 a Start Calibration Now Centroid 1332 88 keV FWHM 1 87 keV Cal adjustment 0 03 3 Use Improved Calibration Restore Default Figure 14 Apply New Calibration Selection Adv 1 27 11 3 24 34 PM Setup Battery Time 196 min 1 Place Co 60 in front of the Micro Detective 2 a Start Calibration Now Gamma Count Rate 47 cps 4 Run
105. rial Industrial Industrial Medical Industrial Industrial Other NORM Industrial Industrial Identification Kr 88 shielded La 138 La 140 Lu 172 Lu 176 Lu 177 Lu 177m Mn 52 Mn 54 Mn 56 Mo 99 Na 22 Na 24 Nb 92m Nb 94 Nb 95 Nb 96 Nb 96 shielded Nd 147 Neutrons Neutrons CR Neutrons on Fe Neutrons on Hydrogen Np 237 Os 194 Ir 194 Pa 231 Pb 203 Pd 103 Po 210 Pr 144 Pu 238 Pu 239 Ra 223 Ra 226 Rb 83 Rb 86 Rh 105 Ru 103 Ru 106 Rh 106 Ru 97 Sb 124 Sb 124 shielded Sb 125 Sb 127 Sc 46 Se 75 ANSI Mode Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Threat Threat Threat Threat Threat Innocent Innocent Innocent Innocent Innocent Innocent Threat Threat Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Innocent Classify Mode 4 IDENTIFICATION MESSAGES AND RADIONUCLIDE LIBRARY Industrial NORM Other Medical NORM Medical Medical Industrial Other Industrial Medical Other Medical Industrial Industrial Industrial Industrial Industrial Industrial Other Neutron Other Other Nuclear Neptunium Other Industrial Industrial Medical Other Industrial Nuclear Plutonium Nuclear Plutonium Industrial NORM Medical Me
106. rn to the DetectiveEX program without exiting tap Cancel To restart the Detective application tap Start then locate and tap on the DetectiveEX program shortcut The application executable file is located in the My Device Program Files DetectiveEX folder 5 3 3 Spectra The Spectra command opens the screen shown in Fig 68 which lets you choose sample description options the file storage location and the file save formats In addition you can delete spectrum files The top right of the screen shows the number of spectra that can be stored in the current storage location refer to Fig 8 File types and filenaming conventions are given in Section 1 4 2 To view stored SPC spectra and their associated reports use the Recall Spectra command Section 5 1 6 Stored spectra can be downloaded to a PC according to the instructions in Chapter 6 60 Adv GPS not communicating Setup Storage Space 25169 Remote lt lt Previous I Figure 67 Advanced Setup Third Page Adv 06 03 2010 3 34 32 PM Setup Storage Space 1951 L Ask for Sample Description Default Description Data Location My Documents v File Save Format Both ORTEC and ANSI v Figure 68 Spectrum Description and Location Settings 5 ADVANCED SETUP 5 3 3 1 Ask for Sample Description You can optionally store a spectrum description comment with each spectrum you save If you mark this checkbox each time you
107. rs Note that because the Detective 200 does not have a neutron detector its user interface does not display neutron count rate meters dose alarm controls search controls property pages etc 1 6 The Launcher Interface for Multiple Identifier Applications ORTEC supports our versatile Detective platform with a wide range of nuclide identification applications When only one identifier application is installed on your Detective series instrument each time the unit is powered on or rebooted it automatically starts up that Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual application If subsequent ORTEC applications are added to your instrument our easy to use application Launcher interface runs first making it easy to switch between the ORTEC identifier programs and exit to Windows Mobile Figure 2 illustrates the Launcher screen for a Micro Detective with its standard DetectiveEX program that also has the Micro trans SPEC application installed Simply tap the desired 6 program Detective EX Micro trans SPEC Figure 2 The Launcher Screen If the Launcher program does not start automatically you will instead see the blue Microsoft Windows Mobile screen In this case tap Start then Launcher Alternatively you can bypass the Launcher and start either program by tapping Start Programs and the application name 8 2 GETTING STARTED This chapter covers the steps you
108. s HEU highly enriched uranium This message is displayed if the major lines of uranium are detected and the ratios of the intensities of the lines indicates the U content to be above about 70 Am241 unshielded in the Industrial category This message is displayed if the 59 keV peak is located It could mean that an Am source such as a smoke detector is present Move closer to the source and or count longer This will allow the higher energy gamma rays to accumulate in the spectrum in case plutonium is also present Unknown peak and Unknown Beta emitter This indicates the gamma count rate is higher than can be accounted for based on the peaks in the Detective library The implication is that either an unexpected nuclide or a beta emitter is present beta emitters typically producing counts over a broad range of energies Move closer to the source and count longer to determine the nature of the suspect item 4 1 1 Comments on Found Nuclide Screen Messages RDD Detected This message is posted when calculated activity is gt 100 mCi whether the activity is from threat or innocent nuclides The gamma count rate and dose rate meters on the Survey Mode and ID Mode screens display a flashing red background and extremely high count and dose rates 39 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 40 5 The three page Advanced Setup menu covers tasks that are not typically requ
109. s Explorer Alternatively files stored on SD card or in the computer s My Documents folder can be downloaded via the USB port to any PC running under 32 bit Windows 7 via the Windows Mobile Device Center or XP Professional SP3 or Windows 2000 Professional SP4 via ActiveSync See Chapter 6 for detailed instructions IMPORTANT Before connecting the Detective to a PC for the first time install ActiveSync or Windows Mobile Device Center first Otherwise the Detective may not be able to communicate properly with the PC Be sure to read Chapter 6 Our MAESTRO 32 MCA Emulator Software A65 B32 v6 05 or later sold separately can be used to view the search and identification spectrum files from the Detective Note that the computer also has a CF type II CompactFlash slot However the dust cover which must be in place to prevent contaminating the card slots blocks full insertion of the CF card Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual MAESTRO can also be used to operate the Detective as a standard multichannel buffer MCB and store the resulting spectra to disk as ORTEC spectrum files For more information on these operations see Chapter 8 1 4 1 Saving Spectra and Searches The current Identification Mode spectrum or Search Mode strip chart is stored in the unit s spectrum memory If you do not save this spectrum or search by tapping the Save button it will be lost when you exi
110. s are marked in the Detector Marking the Overflow checkbox terminates acquisition when data in any channel exceeds 2 1 over 2x10 counts 85 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 86 9 SPECIFICATIONS Gamma Ray Detector Internal coaxial HPGe detector P type high purity germanium Nominal 50 mm diameter x 30 mm deep for the Micro Detective nominal 85 mm diameter x 30 mm deep for the Detective 200 Neutron Detector on Micro Detectives so equipped Single PDT He tube 1 3 cm x 10 1 cm active length 20 atm inside high density polyethylene moderator 3 3 cm x 3 3 cm x 14 cm Internal Compensated Geiger M ller Tube LND 7149 Geiger M ller tube GM tube specifi cations are available on request Gamma Dose Rate Determination Visual overrange indication and continuous audible alarm at dose rates 210000 uS v h The Detective uses two detectors to determine the gamma dose rate over a wide range from 0 05 uS v h to 2510000 uSv h a dose rate range of around six decades For low dose rates below 20 uS v h the dose rate is determined from the Ge detector spectrum For dose rates above this value the internal compensated GM tube is used The Detective switches between the two automatically For radiation fields from extended sources e g from a container full of NORM or far field point sources gt 1 ft 0 3 m from the instrument the precise location of the detector in u
111. s communication IEEE 802 11 INDEX 99 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 100
112. s described in Section 6 2 then copy files via Windows Explorer IMPORTANT Before connecting the Detective to a PC for the first time install ActiveSync or L Windows Mobile Device Center first Otherwise the Detective may not be able to communicate properly with the PC for troubleshooting see Section 7 9 6 1 Windows 7 Download and install the free Windows Mobile Device Center v6 1 or higher from the Microsoft Download Center Follow the wizard prompts restart the PC then start the Windows Mobile Device Center program If the Detective is in MCA Mode tap the Data ActiveSync option to return it to standalone identifier mode see Section 5 2 4 4 Connect the Detective s USB port to the PC If this is the first time the Detective has been connected to this PC Windows will display a series of new hardware messages indicating a mobile device e g the Detective computer has been detected and its driver installed Windows Mobile Device Center will then take several seconds to communicate with the Detective and indicate the its integrated computer is Connected Fig 72 If Windows Mobile Device Center cannot connect to the Detective see the troubleshooting steps in Section 7 9 63 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual 4 Click on Connect without setting up your device This will prevent the host PC and Detective from automatically synchronizing 1 e exchanging fil
113. s you enter characters in the data entry fields the characters will be underlined until you move to another field or until 5 seconds have lapsed since a character was last entered During the time the entry is underlined no other program can modify this value TI Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual NOTES The changes you make on most property tabs take place immediately There is no cancel or undo option for this dialog In MAESTRO the Download Spectra and View ZDT Corrected commands on the Acquire menu and the Smooth and Strip commands on the Calculate menu are disabled for this instrument 8 3 1 Amplifier Figure 79 shows the Amplifier tab Properties for LS MCB 137 which displays the Coarse and Fine High Voltage About Status Reports Presets Gain and Pole Zero controls Amplifier Amplifier2 Amplifier PRO ADC Gain 1 06 Pole Zero pie 4 8 3 1 1 Gain Set the amplifier coarse gain by selecting from the Coarse listbox Fine 0 5278 then adjust the Fine gain with the Coarse horizontal slider bar or the edit box in the range of 0 45 to 1 00 The resulting effective gain is shown at the top of the Gain section The two controls used together cover the entire range of amplification from 0 45 to 32 Figure 79 Amplifier Tab 8 3 1 2 Pole Zero Adjustment To maintain optimum energy resolution and peak position stability to high counting rat
114. save a spectrum an ask for description dialog will open so you can add a description or modify the current Default Description discussed next 5 3 3 2 Default Description This option lets you save a default sample description comment with every spectrum file Tap in the dialog to display the soft keyboard and tap Set to save your entry You can also use this with the Ask for Sample Description In that case when you save a spectrum an ask for descrip tion dialog will open giving you the option of adding to modifying or even deleting the current default description This is a good way to enter the main portion of the description ahead of time then add a unique identifier such as a sequence number to each spectrum as it is acquired 5 3 3 3 Data Location This field Fig 69 allows you to choose the storage device or location for the spectrum storage The location you choose becomes the default location on the spectrum display dialog Tap the down arrow to open a list of valid locations which for the Detective are 1 the SD card which is indicated as Storage Card Data and 2 the computer s My Documents folder If the SD card is not present in its slot it will not be on the list Tap the location you want 5 3 3 4 File Save Format The DetectiveEX application generates two basic types of files e Identification Mode gamma ray spectra Search Mode strip chart histograms of gamma and optional neutron cou
115. se is not important When point sources are close to the instrument the detector readings might not be in agreement because they are in different places within the instrument and the dose rate is varying rapidly with position It will be different at these two detector locations NOTE The dose rate function in the Detective should not be considered as adequate for accurate dosimetry purposes Its primary purpose is to protect the user of the Detective from high radiation fields If you must test the dose rate measurement capability with a point source especially at close range it is important to know the reference points of the instrument detectors since test procedures such as ANSI or IAEA prescribe use of point sources at specified distances from the reference point of the instrument Figure 88 shows the reference points for the Micro Detective For the HPGe detector the reference point is the geometric center of the HPGe detector endcap disk For the GM and neutron detectors the reference point is shown in Fig 88 and is marked on the case of the instrument Figure 89 shows the reference points for the HPGe detector and GM tube note that they are not marked on the case Subject to change without notice 87 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual GEIGER MULLER TUBE 4 37
116. ship On the Synchronization Options screen unmark ALL checkboxes scrolling down as needed to ensure all items have been deselected Fig 75 This will prevent the host PC and Detective from automatically exchanging files 65 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual IMPORTANT Remember that the Detective is not to be used for purposes beyond the monitoring tasks described in the user manual and no changes should be made to the operating system settings Doing so could void your warranty KS Synchronization Setup Wizard Synchronization Options Your Pocket PC is already set up to synchronize with another computer Items you select will be synchronized with all computers Information Type 25 Contacts Calendar A E mail 3 Tasks m Notes ca Favorites O amp Files 1 9 Media Select an information type above and click Settings to change synchronization options for that type Figure 75 Unmark All Synchronization Options 5 Contnue with installation as directed ym icrosoft ActiveSync At the end of the wizard the Active File View Tools Help Sync dialog will indicate the Detective o0 Be B computer is Connected Fig 76 If 2E ols ee ActiveSync cannot connect to the aes Detective see the troubleshooting Synchronized steps in Section 7 9 Information Type Status 6 You can now click on the Explore toolbar button in t
117. sts until you move away from the hot source Upper line Lower line Dead Time 79 79 o 36 0 13 3 N 84 14 21 7 W Battery Time 215 min Move Back 3 11 08 8 13 50 PM Storage Space 25176 E 56 99 ge gt P Figure 9 Too Close eee ai to High Activity Figure 8 Alternating Status Indicator Displays Source e Instrument Status Area The center of the Survey Mode screen provides brief indicator s of the unit s readiness for data acquisition The Status is either READY Fig 17 or Cooling In addition warnings such as the high gamma dose rate message are posted in this part of the screen e Power Source Indicator The icon in the i p lower right corner of the Status area shows i whether the Detective is operating on a fully Figure 10 Battery Charged Battery charged battery a charging battery or external Charging Battery Discharged power with a fully discharged battery The running on external power three respective icons are shown in Fig 10 2 7 2 Moving Through the Menus To move through the dialogs tap the soft buttons shown on the display The functions available are shown on the buttons If a function you want is not shown it is not available from this dialog In some cases the function has been disabled in the Advanced Setup 17 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual To select a function on a dialog tap on the button To return to the precedin
118. sword field to open the soft keyboard Enter the password and tap Set The soft keyboard will close To put the password into effect tap Back to return to the Survey Mode screen To remove the password tap the end of the password delete all the characters by tapping the backspace soft key then tap Set Tapping the spacebar to overtype the characters does not work i e there is no overtype capability and the space is treated as any other character NOTE There is no master password so be sure to Adv Dead Time 0 0 record your password including upper Setup Storage Space 25095 case and lowercase letters If you lose this DS password contact your ORTEC representative or our Global Service Center for assistance o y set Allow Display of Spectrum Password 5 2 4 2 Allow Display of Spectrum GPS Port USB Port This allows an administrator to hide the Display Mode Data ActiveSync by locking the spectrum display When the display is Control MCA Mode locked none of the Display buttons will be shown on the dialogs To lock the display tap the checkbox to mark it To restore access to the spectrum display tap AO the checkbox again to unmark it To prevent spectra from being viewed on the Figure 61 The Settings Screen Detective screen unmark the Allow Display of Spectrum checkbox then set a password in the Advanced Setup dialog Section 5 2 4 1 e Ifthe spectra must n
119. t aet eu togae Pa M AE 80 B a AADO a ga eda v praise ape von ipu uique Sotelo x a totu se Sont ace Dec Ae 80 S XU HIS V Olde esos ou ck tate Cale ademas Ghat RR ee deiode cosa dis E ieis 81 8 9 0 ADOL iniauuien ten cud fantom aaGumeng bento ate ine eaten nays 82 8 9 5 PAWS ct oe he LIS PRO Gen ETE a teed ab me ot el eee Sua ahs Da Oe acted 82 8 3 8 REPOS eenaa ue ee Re Rate ROSS ee REA de UE Oa DE EX ed 83 8 9 9 PICSOUS eee Gee hen p ner du EE EE Sede ouside Lobo i eoo cate led 84 D SPECIFICATIONS iniaa a aves Qe ati Ga ae duy vob AES DRE es 87 9 1 Electrical and Mechanical coste Ge dene Ske ane o Ge Regen OR wR EE ade dos 90 9 2 COMNCHOIS sae ds sete Veo E pee ney EIN dae EE eo ss awe de piens 9 OS TC Prerequisttes co ous t pb P DEAE Rd RU EN EE d Ed 92 9 4 Shipping the Micro Detective or Detective 200 0 0 cece eee 92 9 5 Long Term Shutdown Storave c bx ERE ECT ERU REPR IE RAPERE LE 92 10 CHANGING THE INTERNAL BATTERY sese 95 INDEX ope eee eee ewes dud xa aa EP Cp qe t dame eae ee ends 97 Safety Instructions and Symbols This manual contains up to three levels of safety instructions that must be observed in order to avoid personal injury and or damage to equipment or other property These are DANGER Indicates a hazard that could result in death or serious bodily harm if the safety instruction is not observed WARNING Indicates a hazard that could result in bodily harm if the safety instruction is not o
120. t the screen The Spectra dialog Section 5 3 3 lets you select the sample description options the file storage location and the file save format s for the spectrum and strip chart files It also lets you delete spectrum files one at a time 1 4 2 File Formats and Filenaming Conventions The ORTEC file format option saves identification spectra and search strip charts in the ORTEC SPC and CHN formats respectively The ANSI format option saves in ANSI N42 42 format which is compatible with the ANSI N42 42 2006 standard identification spectra and search strip charts are formatted for an InstrumentType of Radionuclideldentifier and PersonalRadiationDetector respectively The Both ORTEC and ANSI option saves both file types for each measurement 1 4 2 1 Identification Mode Spectra These can be saved on the ID Mode and spectrum Display screens The SPC file contains spectrum calibration sample description and analysis results as specified in the ORTEC Software File Structure Manual for DOS and Windows Systems Part No 753800 hereinafter called the File Structure Manual It also includes the following information For units with neutron detectors total neutron counts for each acquisition and the neutron count rate at the time the spectrum file is saved e GPS location data e The type of Detective series instrument used to collect the data e g Micro Detective Detective 200 Detective EX 100 Detective DX 100
121. tatus is displayed the next setup step is to check the calibration This procedure checks and adjusts the Detective s electronics so that it correctly identifies the nuclides in the area For an application as important as interdiction of illicit nuclear materials trafficking it is important to know that the nuclide identification is correct Routine use of the recalibration feature is a solid means of quality assurance which can be used to support legal proceedings The digital electronics are extremely stable and in most situations are unlikely to need recalibration except at long intervals days or weeks However if wide ranges of ambient temperature variation are experienced say a change of 20 C we recommend checking the calibration more often NOTE Before using the Calibrate feature the calibration source must be selected on the Cal Settings dialog under the Advanced Settings The Detective lets you choose from two predefined calibration sources Cs or K or define one or two of your own sources See Sections 5 2 1 and 5 1 3 A small calibration source can be used in conjunction with the manual calibration check to ensure the unit remains in calibration To perform the manual calibration check On the Survey Mode screen tap on Advanced see Fig 11 then Calibrate Position the indicated source in our example a user has defined and selected a Co source in front of the detector window then tap the Start Calibration N
122. tective 200 User Interface 0 00 cee cee ee 7 1 6 The Launcher Interface for Multiple Identifier Applications J 2 GETTING STARTED 25929 adt aa ne ER Rd o RE a aed a Roh Ac ER 9 2 1 Major System Components 5s eres tx S e URN DARREN ERR OU 9 Zoe The Micro Dele Ve cos pese Stak et ye det cte Puto iS E Ge eee fans ar E aie 9 22s T s Front Panel Gases acq et po ete r oi du dqie mere cornered 9 2 29 Rear Panel C Onnee OPS es sxe cia ea SPI REP EN APER eee Beha Sak 10 22 3 Ine Internal Battery oue iudex co 6 ETS Me Pa wee OI HN URN RE RE 10 2 2 4E MME POUClSCECO e retire ER EC RIED ER PRAE ERFES 11 2 2 5 Attaching the Carrying SIEAD e ego xa ee wey s pha pu kus ER awe See oe 11 2 3 The Det ctive 200 ag es acces e ORE E RES RUNS a mite EUR Irt eta afe 12 2 4 Internal vs External Power oed eh ster ica C ROGER Bot ada ED Pape m tras 13 2 5 Operating Cautions and Notes vua ox etes qoe a Se aye eke edd qoe npe d e ded 13 2 6 Startup and Cooldown uu auc ion tae ou ciuem E GR oda els KH Dee nee Ome 15 2 6 1 Connecting the Detective to External Power and Turning ItOn 15 2 6 2 Turning On the Mechanical Cooler 24 cs 26 ERE RERILORBRXG ERE AEYS 16 Die he User Inte FE 366 esac de iS het p ote teg ee oss end exe teas 17 2T T Instrument Status IndiCators os obse POL EN ee D xa Re 17 2 7 2 Moving Through the Meus ds arb Det p DEP ERR e ERU Rd 17 2 8 Customizing th Detect
123. the top of the quasi trapezoid The Width adjusts the extent of the flattop from 0 3 to 2 4 us The Tilt adjustment varies the flatness of this section slightly The Tilt can be positive or negative range 1 0 to 0 99219 Choosing a positive value results in a flattop that slopes downward choosing a negative value gives an upward slope The dead time per pulse is 3 x Rise Time 2 x Flattop Width When you are satisfied with the settings Close the Properties dialog and prepare to acquire data Once data acquisition is underway the advanced user might wish to return to the Amplifier 2 tab and click on the Insight section s Start button to adjust the shaping parameters interactively with a live waveform showing the actual pulse shape 8 3 3 Amplifier PRO Figure 81 shows the Amplifier PRO Properties for LS MCB 137 tab which contains the Low Fre quency Rejector LFR filter control Turning it off causes shifting and or broadening of peaks in addition to the acquisition of noise in the lowest energy channels We strongly recom mend the LFR be enabled during all data acquisitions Note however that you must turn the LFR off to pole zero the Detective Subsequent measure ments can then be taken with the LFR filter on High Voltage About Status Reports Presets Amplifier Ampliier2 Amplifier PRO ADC lv Low Frequency Rejecter Figure 81 Amplifier PRO Tab 8 3 4 ADC This tab Fig 82
124. this screen the nine live indicators typically read Waiting after which they acquire their actual current values or status messages e g OK Error Waiting OFF On startup and until the detector has cooled and the HV has automatically turned on Detector Temp Cold Tip Temp and Bias Voltage read Error Once cooldown is complete and the HV automatically turns on these indicators change to OK When the cooler is switched off the Cold Tip Temp and Cooler Drive indicators read OFF The OK indicator means the parameter is within the allowed limits The Error indicator means the parameter is outside the limits and must be corrected before the Detective can be used If the Waiting indicator persists beyond a few seconds or if you receive an Error reading for any of these parameters after the nominal cooldown time has elapsed contact your ORTEC representative or our Global Service Center When all parameters are within allowed limits the Survey Mode screen displays the Ready status message 42 5 ADVANCED SETUP 5 1 2 Turn Cooler Off On When the cooler is ON the button reads Turn Cooler OFF To turn the cooler off tap this button then confirm see BB Do you really want o tum Fig 35 The button title will change to Turn Cooler ON yy the cooler off Tap it to restart the cooler When the instrument has cooled ven to operating temperature the bias voltage automatically turns on Figure 35 Turn Cooler Off NOTE The Detect
125. threat status see the ID table in Chapter 4 red Monitor GPS not communicating Storage Space 25171 Figure 27 Monitor Mode for threat nuclides green for innocent and in LCX Mode only yellow for suspects Each ID persists until you tap to acknowledge it this ensures that no ID goes unnoticed Once acknowledged the ID then persists until the source that triggered it is no longer being detected 3l Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Monitor Mode searches cannot be saved To collect data that can be saved and reviewed later tap Identify 3 5 SNM Search Mode The SNM Search Mode screen Fig 28 displays bar graphs showing how closely identifications of Pu U and neutron flux approach user selected detection thresholds The thresholds are set on the SNM Search Mode setup dialog under Advanced Settings Section 5 2 6 Because Ba can be used as a plutonium surrogate advanced users can enable a Ba search for training purposes and for developing a site s concept of operations If the Ba search is disabled its bar graph is not displayed on the SNM search screen SNM searches cannot be saved To collect data that can be saved and reviewed later tap Identify Figures 28 through 31 depict a search in which Ba is detected At the start of the search the status message says Continue to search Fig 28 This message is displayed until the
126. ts are 10000 uSv h for the Gamma Dose Rate and 500 cps for the Neutron Count Rate bar To set lower limits see Section 5 2 7 Survey 1 27 11 3 58 40 PM T y Count Rate 2043 cps Mode Battery Time 198 min Neutron Count Rate 1 cps y Count Rate 6678 cps yv Dose Rate 0 01 mrem h y Count Rate 13534 cps n p y Count Rate 691 cps Status READY y Count Rate 20200 cps flashing er Figure 18 The Gamma Count eee Rate Meter As Count Rate Identify C9 Figure 17 The Survey Mode Screen When the gamma dose rate goes above the limit the WARNING High Gamma Dose Rate message is displayed in the Instrument Status Area and an alarm sounds You can optionally choose to set lower gamma dose rate and neutron count rate alarms using the Dose Alarm setup feature under the Advanced Settings screen Section 5 2 7 Tap Identify to start the Identification Mode Section 3 2 Tap Monitor to start the Monitor Mode Section 3 4 Tap Search to start the Search Mode Section 3 3 Tap SNM to use the SNM Mode Section 3 5 Tap Advanced to display the Advanced Setup dialog Chapter 5 NOTE Ifa blue simulated LED is displayed in the upper left beside the screen title the instrument is in the LCX radiation detection mode which we strongly recommend for use only by experienced gamma spectroscopists Be sure to read Section 5 2 3 3 and or refer to your orga
127. unted to the desired fixed live time while the very active samples will be counted for the ROI peak count In this circumstance the ROI Peak preset can be viewed as a safety valve The values of all presets for the currently selected Detector are shown on the Status Sidebar These values do not change as new values are entered on the Presets tab the changes take place only when you Close the Properties dialog Enter the Real Time and Live Time presets in units of seconds and fractions of a second These values are stored internally with a resolution of 20 milliseconds ms since the Detector clock increments by 20 ms Real time means elapsed time or clock time Live time refers to the amount of time that the Detector is available to accept another pulse 1 e is not busy and is equal to the real time minus the dead time the time the Detector is not available Enter the ROI Peak count preset value in counts With this preset condition the Detector stops counting when any ROI channel reaches this value unless there are no ROIs marked in the Detector in which case that Detector continues counting until the count is manually stopped 84 8 USING THE DETECTIVE WITH A PC AND ORTEC SPECTRUM ANALYSIS PROGRAMS Enter the ROI Integral preset value in counts With this preset condition the Detector stops counting when the sum of all counts in all channels for this Detector marked with an ROI reaches this value This has no function if no ROI
128. urce to fully cool a warm detector e Ifthe internal batteries have become exhausted but can still hold a charge see the next section e Ifthe battery does not hold a charge ensure that it is properly installed If properly installed the battery must be replaced according to the instructions in Chapter 10 7 4 1 Starting from an Exhausted Battery If the internal battery is completely exhausted Connect the Detective to external power The cooler will start automatically If the detector has warmed up it will be cooled to operating temperature before the battery begins recharging If the battery is completely discharged it will typically reach full charge in 3 4 hours after the detector has cooled e Ifthe cooler does not automatically restart go to the Advanced Setup menu and tap Turn Cooler On If the problem persists contact your ORTEC representative or our Global Service Center for assistance 70 7 TROUBLESHOOTING 7 5 If the Display is Lost or Posts a Display Disabled Message Press and hold the On Off button located on the base of the display until the shutdown warning screen counts down and the display goes dark Wait 15 20 seconds then press the On Off button to restart the computer When restart is completed the DetectiveEX program will automatically start and the unit will be ready for use For further assistance contact your ORTEC representative or our Global Service Center 7 6 If You
129. warranty Ambient Operating Environment 10 C to 40 C at a relative humidity lt 90 at 35 C non condensing Internal Battery Rechargeable nominal 14 4 V lithium ion battery pack Charging circuitry and battery management circuitry internal to the power adaptor charger Battery lifetime 3 5 years replacement kit available from ORTEC The compartment is semi sealed and protects against penetration of dirt and moisture See Chapter 10 for instructions on replacing the battery Battery Life When HPGe detector is cold gt 3 hours at 25 C for the Micro Detective and 22 hours at 25 C for the Detective 200 lt 4 hour charge time Battery life can be extended indefinitely by the use of optional external battery belt The unit is expected to be kept running once cold Note that the internal battery charge can start the mechanical cooler but cannot fully cool a warm detector external power is required In addition an exhausted internal battery should be charged for 2 hours before the identifier is cooled using external power If the internal battery is completely exhausted but can still hold a charge see troubleshooting Section 7 4 Note that using an automobile battery to cool the detector could significantly discharge the auto battery Power Usage Greatest during cooldown 100 W While charging battery 5 A nominal Cold with fully charged battery 2 A CE Conforms to CE standards for radiated and conducted emissions susceptibi
130. width Dead Time Correction Extended live time correction according to Gedcke Hale method Accuracy area of reference peak changes lt 3 from 0 to 50000 cps Linearity Integral Nonlinearity lt 0 025 over top 99 5 of spectrum measured with a mixed source Fe at 5 9 keV to Y at 1836 keV e Differential Nonlinearity lt 1 measured with a BNC pulser and ramp generator Overload Recovery At maximum gain recovers to within 2 of rated output from x1000 overload in 2 5 non overloaded pulse widths measured using our InSight Virtual Oscilloscope Note that the computer also has a CF type II CompactFlash slot However the dust cover which must be in place to prevent contaminating the card slots blocks full insertion of the CF card Ron Jenkins R W Gould and Dale Gedcke Quantitative X Ray Spectrometry New York Marcel Dekker Inc 1981 pp 266 267 89 Micro Detective and Detective 200 Portable Nuclide Identifiers User s Manual Pulse Pileup Rejector Automatically set threshold Pulse pair resolution typically 500 ns Low Frequency Rejector LFR Filter The digital signal processor incorporates ORTEC s exclusive LFR filter designed to reduce microphonic and low frequency periodic noise from germanium detector output signals thereby producing significant improvement in spectral resolution The LFR is specifically beneficial in systems cooled by mechanical coolers which are known to often contr
131. will need to prepare the Detective for use System components and hardware overview Sections 2 1 through 2 4 Operating cautions Section 2 5 Startup and cooldown Section 2 6 User interface basics Section 2 7 Customizing the Detective software settings Section 2 8 Initial calibration check Section 2 9 and background measurement Section 2 10 2 1 Major System Components The specific components for your instrument will depend on the model and options you purchased but typically they will include a USB cable the appropriate documentation set an ac power adaptor charger and an automobile accessory adaptor for cooling and operating the unit from a 12 V battery Any options will be packaged separately and will include instructions for that option 2 2 The Micro Detective Figure 3 shows the Micro Detective s features 2 2 1 Front Panel On Off Button Located below the touchscreen on the base of the bezel To reboot the computer press the power button The computer will restart then automatically launch the unit s software application the cooler will stay on throughout e SD Card Slot This is located on the front panel under the protective dust cover To release the cover press and rotate by a quarter turn the two captured bayonet mount screws The SD slot is keyed so the memory card can only be inserted in one orientation Insert the card and close the protective cover NOTE We strongly recommend that th

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