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• XRF Core Scanner User Manual • XRF Core Scanner Program

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1. A NI 3 E RI KA Install Genie 2000 Programmi Install Acrobat Reader d About Programming Library n Read Programming Manual View Release Notes Explore this CD ee Zar Programming Library 3 0B Installa tion ee i E Contact Us Copyright 2005 Canberra Industries Inc gram is protected by US and International copyright laws Installation Options Selection xj If the installation is being performed simply to allow execution of a program developed with this package then you should select the first option C GENIE 2000 Runtime Files Only Pogam i bay AND GENE S ER lt Back Next gt Cancel Choose Destination Location XI Setup will install GENIE 2000 Programming Library in the following folder To install to this folder click Next is install to a different folder click Browse and select another der You can choose not to install GENIE 2000 Programming Library by clicking Cancel to exit Setup Destination Folder C AGENIE2K Browse Installation Mode Selection GENIE 2000 Programming Library Installation Mode lt Back Cancel Setup Complete Step 2 Create MID file using the MCA Input Definition Editor Start the MID editor via the windows start menu Start Programs Genie 2000 MCA Input Definition Editor Add MCAs to Definition Table Available MCAs 91 810 Network MCAs U
2. program MS Excel Therefore any attempt to run this option in a system with no Excel on it will generate an Error 2 If the Excel file selected exists the program will prompt you before for over writing it Since this prompt is generated by the server Excel itself a negative answer to it might result in Errors 3 Before running WinAxilBatch with the option export to Excel checked be sure that you have NO any instance of Excel currently open Otherwise the program might over write your Excel data Part 4 Program Options 25 WinAxilB atch Options Model Report Peak Data File Data Excel Program Model Report u Minimize main screen Vv Enable export data to while running IV Save fitting results Vv Remember last path for files Ok Cancel Oy Win xilBatch Options Da File Data Excel Area gt ChiSqr Area D rea lt zl Continuum Ok Cancel Excel Default file type spe v Help 25 WinAxilB atch Options 0 WinAxilB atch Options Proaram Model Report Peak Data File Data Excel LiveT ime m LiveTime RealTime 22 j RealTime MeasurementD ate MeasurementD ate MeasurementT ime SamplelD 25 WinAxilB atch Options Program r Report Type Short Report Long Report 0 WinAxilB atch Options Program Model Report Peak Data File Data Excel Excel File CAM iin documenten Results xls
3. Close and Save Excel when finish Peak Data File Data Excel Clear Report Screen on every new Run Autofit columns to contents Ok Cancel Help Program Here you can chose your preferences for some parts of the operation of the program WinAxilBatch Minimize main screen while running Every time WinAxilBatch will run its Main Window will be minimized and the program will run on the background This mode is particularly suitable to perform other tasks or visualization without needing to wait untill WinAxilBatch finishes When the program is chosen to run in this mode its main screen will be minimized to the Window Task Bar You can still restore it by clicking on the corresponding Task Bar button or using Windows Task Selector Alt Tab When the program is minimized you can inspect the percentage of the tasks done by placing the mouse over the program s button in Windows Task Bar Save fitting results By selecting this option the program will save the fitting results into each analyzed WinAxil File While not checking this option fitting results will not be saved into each file but would be reported into the Report Window or into Excel if that option had been chosen Remember last path for files This option will cause the program to start always from the last analyzed sub directory Enable export data to Excel This option enables disable the possibility to export chosen peaks data direc
4. type of Report for each individual batch run See more on Select type of Report Excel In this form you can define the default parameters for the operation of the program when Export to Excel mode has been chosen Excel File Here you can define the name and location of the Excel file into where all data will be exported to You can just type the name and path of the Excel file or select it using the locator command button IMPORTANT You can select existing or not existing filenames If the file chosen exists then WinAxilBatch will open it with a question to overwrite it If the file selected does not exist WinAxilBatch will create a new Excel file In any case the location of the files must be a valid one IMPORTANT If no file name is specified in program s Options then when running WinAxilBatch it will create if not existing an Excel file named WINAXILBATCH XLS located in the application subdirectory Close and Save Excel file when finished Choosing this option will result in WinAxilBatch closing and saving Excel file after the export data has been finished When NOT checking this option Excel instance is left open Autofit columns to contents Will adjust the Excel columns widths to fit its contents See more on Exporting Data to Excel and How To Export Data to Excel Peak Data Here you can define what kind of Peak s Data to Report and export to MS Excel 0 WinAxilB atch Options Program Model Repo
5. window Scanner tab Check if they still apply Select the Calibration Scan mode with the Scan Mode selector Be sure that the Helium and X Rays are switched ON at the scanner Press the Start button to start scan Calibration Scan am How Do l Start a Stability Scan A stability scan repeatedly measures at the same position on a core to check the systems and samples stability A stability scan ends automatically after the number of cycles set at Max Test Cycles If the Reposition checkbox is checked the scanner re positions before a measurement The spectrum file name automatically contains a cycle number Make sure that the program is connected to the scanner Click the Measurement Setup button on the Application Toolbar Fill in Data Directory Sample Name and choose an appropriate X Ray excitation The other parameters are ignored Close the Measurement Setup window by pressing the Ok button The measurement Position Max Test Cycles and Re position are taken from the Instrument Settings window Scanner tab Check if they still apply Select the Stability Scan mode with the Scan Mode selector Be sure that the Helium and X Rays are switched ON at the scanner Press the Start button to start scan How Do 1 Reset a scanner error on the touch screen If any serious failure in the scanner is detected like emergency stop low air pressure etc the system stopped and an error symbol at the top of the touch screen wil
6. All these settings can also be saved as a AFM file This file type is called Model File Such a Model File can be used in WinAxil to accelerate the processing of other spectra that are measured under the same conditions WinAxilBatch is a batch processing program without a graphical interface that uses the same mathematical core as WinAxil It is able to process large amounts of spectra that are measured under the same condition and can export the fitting results on the run to Microsoft Excel WinAxilBatch needs a Model File that contains al the proper measurement calibration and fitting parameters WinFund is a program that can perform quantitative analysis of XRF spectra based on the fundamental parameter approach It can work in three different modes Standardless fundamental parameters mode Standard based fundamental parameter mode and Compare mode This program is still in development and can only be used with extreme care Part 6 How Do I Connect to Scanner Before starting an actual scan be sure that the XRF Core Scanner is switched on and operates in Remote mode Only when the program was just started it needs to be connected to the scanner and its instruments Press the Bh ution to connect the program to the scanner and its instruments If the connection is established the bl el buttons become visible as a sign that a scan can be started However before starting a scan the Instrument Settings and the Measurement Set
7. CFG Basic Special Admin Parameter Data Directory Sample Name Sample Length Step Size Scan and Excitation Mode Special Positions Skip Positions Special Areas Project Name Project Start Date Project Total Core Length Project Total Samples System Start Date System Total Core Length System Total Samples Canberra DSA 1000 settings GAIN Channels High Voltage Rise Time Flattop Time Default value Application Directory Default 60 cm 10 cm Single Run Manual excitation 0 0 0 No Project Current Date 0m 0 Current Date Om 0 in DSA Hardware Total gain appr 72x in DSA Hardware 8192 in INI file in INI file in INI file Getting Started manual for WinAxilBatch Version 2 0 Augustus 2007 Bob Koster Contents Part 1 Brief Introduction to WinAxilBatch Part 2 Quick Start Part 3 Exporting Data to Microsoft Excel Part 4 Program Options Part 5 WinAxil Model Files Avaatech Core Scanner 1 Contents of this manual is based on the Windows help files that were supplied with WinAxilBatch and was written by Canberra Eurisys Benelux 2 WinAxil and WinAxilBatch are exclusively distributed and supported by Canberra Eurisys Benelux Part 1 Brief Intoduction to WinAxilBatch Brief Introduction Many times we have experimental or analytical tasks that end up in several alike X ray spectra In those cases the result is many X ray spectra taken und
8. Scanner 20kV Afm amp 9 c J spe ToDo Feld 0a 1m Ni 6 120 Feld 0a 50k 1m Ni B spe Feld99a 45kV 1m amp Ni 6 spe Feld99a 50kY 1m Ni B spe a EIN My Documents SPE Spectra Barium Experiment 1 4 Ea Be x Run 3 0 0 Errors 0 Part 3 Exporting Data to Microsoft Excel Exporting Data to Excel WinAxilBatch program has been designed with the possibility to interact with Microsoft Excel software package allowing you to export chosen peak s data directly into Excel The type of data that you can export to Excel can be user defined See more here The program will place the peak s data in Excel s sheet columns While each file s data goes into a corresponding Excel s sheet row There is no limit to the amount of peaks and peaks data to be exported rather that the own limitations of Excel itself IMPORTANT If no file name is specified in program s Options then when running WinAxilBatch it will create if not existing an Excel file named WINAXILBATCH XLS located in the application subdirectory Before exporting to Excel you must specify in WinAxilBatch Program s Options to which file the export will be realized File can be an existing one or a new one When using this option there are a few items that you should be aware of 1 WinAxilBatch does NOT check the existence in your computer of a registered copy of the
9. XRF analysis is a horizontal surface The data acquisition of a core is carried out on a personal computer Before a scan all positions or areas of interest are entered The scanning of a core is computer controlled If the scanner cannot find a sediment surface it will continue with the next position Post processing of the data is carried out on the same computer 1 2 Overview of the main components The XRF core scanner consists of five main parts 1 Note Core scanner with DC motor actuated X and Z axis stainless steel bearings for Z axis stainless steel X ray safe enclosure with X ray safe window for visual inspection electric motor driven door and mechanical core fitting Intelligent scanner electronics with precise positioning capabilities integrated safety interlock mechanism programmable logic control with touch screen for fault finding and manual control functionality Forced air cooled Oxford 100 Watt X ray source with Rhodium anode and a voltage range of 4 50 kV and current range of 0 2 mA Canberra X Pips 1500 1 5 Detector 8 mm collimated to 5 mm crystal thickness 1 5 mm Be window 0 5 mil soldered coated Canberra DSA 1000 MCA Personal computer running under Windows XP with fully automated data acquisition and processing software Both the X ray source and the X ray detector contain Beryllium windows as an X ray transparent separation between vacuum and atmospheric conditions Beryllium is
10. a toxic material 2 Installation 2 1 Requirements Electricity The XRF core scanner needs one electrical connection to a 230 V 50 60Hz mains net The connection should be fused with 16 Ampere See appendix 4 1 for the electrical specifications Helium gas Helium gas is necessary during XRF measurements It has a much lower X ray absorption then air The helium pressure at should be adjusted with a pressure regulator at 0 5 1 bar The required helium flow during XRF measurements is approximately 10 30 ml min at environmental pressure The estimated live time of a 200 bar 50 bottles is around 200 days 3 Operation 3 1 Warning The X rays generated in the source are dangerous and may be fatal if encountered Extreme caution must be exercised when working with this equipment Radiation dosimeters must be worn by anyone working with or observing the operation of this equipment Purchasers planning to install a radiation machine should ensure they are in compliance with local state and federal regulations See appendix 4 4 for a radiation safety data sheet 3 2 Functional description Before switching on the core scanner the compressed air from an external air source e g a compressor should be connected The helium gas bottle must be opened The MAIN SWITCH mounted on the left side of the XRF Core Scanner must be switched to position ON Always push the button RESET EMERGENCY STOP after activating the ma
11. excitation list appears in the Measurement Setup window There one can make a choice which excitation condition is to be used for a step scan Even all excitation conditions from the pre defined excitation list can be chosen That will result in a multi run step scan that measures a specific sample with various excitation conditions CountTime is the time that the Multi Channel Analyzer takes to acquire a spectrum Since the MCA is programmed to measure in live time the actual time a measurement takes is calculated as Count Time 1 Dead Time 100 where Dead Time is a physical MCA phenomenon that is related to the total counts that enter the X Ray detector The Dead Time is displayed on the main screens statusbar The Dead Time can be influenced by the X Ray tube current Instrument Settings Spectrum Display Instrument Settings EI Both Energy Calibration settings Offset and Gain are implemented to transform the spectrum channel numbers in the Spectrum Display Panel into energy values The settings on this screen are only to calculate the displayed energy value of the cursor in the Spectrum Display Panel This energy value is displayed in the right corner of the statusbar The measured and stored raw data spectra are not affected by this display energy calibration Since the used spectrum post processing package works with pre defined processing models it is strongly advised to have the hardware detector gain always set to the
12. is needed for processing A dead time of 40 indicates that only 60 of the time X rays actually are counted To correct for this the time base is delayed A count time of 30 s with a dead time of 40 will actually take 50 s A higher current setting meaning a higher X ray intensity gives a higher dead time thus increased measuring times A very low current setting gives a low dead time but also poor data statistics In practice it is recommended to adjust the current so that the dead time percentage is 10 50 During the scanning of a sediment core it is not allowed to change the current setting anymore It would disturb the linearity of the qualitative results Before starting a scan the core name and length the count time and step size must be entered Also special areas with another step size can be entered During the scan a XRF spectra is stored for each measurement See Getting started manual for XRF Core Scanner Program for more details 3 Slit size The irradiated length of the sample can be adjusted with a motor controlled slit system The slit size setting should be set using the touch screen on the XRF Scanner From the main Menu press the Slit button On the Slit screen the desired slit size can be entered in the Destination field Press the GoTo button to adjust the slit The final slit opening can be read from the Position field The arrow buttons can be used to modify the Destination value Siemens SmartClient Desktop Wi
13. same value Recommended values are 20eV Channel at 2048 channel spectra or 10eV Channel at 4096 channel spectra Instrument Settings Scanner Instrument Settings x General Sarge Ditea ren Ir Sample 171 0 Safety Margin mm 5 0 r Stabilty Scan Calibration Scan Position mm i 00 0 Position mm 10 0 Abs Max Test Cycles fi 0 Data File Path PR Re position each cycle C Data OK Cancel Help The General settings Sample Offset and Safety Margin are implemented to calibrate the scanners position and to prevent the scanner from measuring too close to the cores edges The Sample Offset is the distance between the scanners homing switch and the 0 cm location of the core to be measured Adjust this value if the mechanical 0 cm position has been changed The Stability Scan settings Position Max Test Cycles and Re position determine the behavior of a stability scan A stability scan repeatedly measures the same position on a core to check the systems and samples stability A stability scan ends automatically after the number of cycles set at Max Test Cycles If the Reposition checkbox is checked the scanner re positions before a measurement If not checked the scanner positions only once before the first measurement and then repeats the measurements without any mechanical movements The spectrum file name automatically contains a cycle number The excitat
14. tube Press the red button of the thermal fuse when the tube has cooled down Press RESET ERROR and RESET CYCLE on Main Menu of touch screen The cover will not open The X rays are switched on Check if emergency button is not activated Emergency button has been activated To recover from an emergency stop pull the emergency stop button out and press the RESET EMERGENCY STOP button Press RESET ERROR and RESET CYCLE on Main Menu of touch screen X ray detector has been pushed upwards This generates an emergency stop situation If the cause of the detector movement is a serious crash of the detection triangle please contact AvaaTech immediately If the detector moved by accident recover from the emergency stop situation as described above Fault message X Z Axis error on display The X Z table did not reach the target position Check for mechanical obstructions The scan must be restarted No Helium bubbles in water bottle Open the Helium bottle No Helium bubbles in water bottle there is maybe a leak in foils of the prism Remove the prism and put new foil on the prism 4 3 Material information sheet for Beryllium 4 4 Radiation safety data sheet Getting Started manual for XRF Core Scanner Program gt Version 3 0 Contents Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 August 2007 Koster Introduction to the XRF Core Scanner Software Launch Program Startup Window User Interface Sca
15. Avyaatech 121 m Core Scanner ARE ore Scanner UserManuals XRF Core Scanner User Manual e XRF Core Scanner Program Getting Started e XRF Core Scan Program Default Values Winaxil Batch Getting Started m nstallation Manuals External Connections XRF Core Scanner e Canberra Connections XRF Core Scanner e Canberra X PIPS DSA 1000 Installation and Configuration XRF Core Scanner user manual version 2 0 C N I O Z amp Avaatech 20 08 2007 Table of contents Section 1 IM ao NA 2 1 Title General information Description of the XRF core scanner Overview of the main components Installation Requirements Operation Warning Functional description Sample preparation Data acquisition Data processing Appendices Specifications Trouble shooting Material information sheet for Beryllium Radiation safety data sheet Page WARNING The X rays generated in the source are dangerous and may be fatal if encountered Extreme caution must be exercised when working with this equipment Radiation dosimeters must be worn by anyone working with or observing the operation of this equipment Purchasers planning to install a radiation machine should ensure they are in compliance with local state and federal regulations See appendix 4 4 for a radiation safet
16. AxilBatch program uses several parameters and spectrum related data for the deconvolution of the X ray spectra All these common data is stored into a so called WinAxil Model File Only having a registered copy of WinAxil software you are able to create a Model File To create a WinAxil Model File follow the following steps 1 Start WinAxil program 2 Among all similar files that you would like to include in the batch analysis select one very typical to the others and with good spectrum statistics Hint select a file very similar to all the others in its continuum with the presence of all elements you would like to quantify with good statistics etc 3 Be sure that you set correctly all spectrum parameters E g Measurements conditions fill in all details Detector amp filter select correct detector and filter entry from the database Excitation select correctly the type of excitation and filters used If necessary correct the X ray Technique 4 Perform an accurate energy calibration 5 Select the most suitable Fitting Model Continuum mathematical model ROI boundaries fitting parameters etc 6 Inspect the spectrum and select the elements to be analyzed 10 11 It is advisable that you chose a file as model having all the peaks of the elements you would like to analyze during the batch run But in case of some of the peaks are not present it is important that in this step you select here those e
17. Name 236 13PC XPIPS Sample Length cm 40 0 Step Size cm fi 0 00 Scan and Excitation Control for Step Scan Mode only Single Run Use settings from Instrument Settings Excitation Tab Single Run Use a pre defined excitation condition C Multi Run Use all pre defined excitation conditions in multiple scans Pre defined E citation List 1 20k 0 200m 5s Filter 1 Mo Filter 2 10k 0 200m amp 4s Filter 2 Cellulose Measurement Scrip Load Save As OK Cancel Help The Data Directory is the directory where the spectrum files acquired during a scan are saved in By pressing the Change button an existing directory can be chosen or a new directory can be created Sample Name is the name of the core that is to be measured Do not use any of the following characters since they could give problems in Windows file names Sample Length is the exact length of the core Step Size is the distance between each measurement during a step scan A Special positions apply sign next to the Step Size parameter indicates that special positions apply for this scan See Special tab topic for an explanation The Excitation condition to be applied can be chosen from the Instrument Settings Excitation tab or from the pre defined excitation list Even all excitation conditions from the pre defined excitation list can be chosen That will result in a multi run step scan that me
18. SB MCAs x DSA1000 using DIK USB he Eagle Series 5002 fe Eagle Series 5004 e 12K Simulator i InSpector 2000 using I2K USB Multiport II USB hu uniS pec H F RS232 MCAs H Plugin Board MCAs H IEEE 488 I nk newn MSs MCA In MCA DSA1000 DE Sample Changer ADC MAR Stabilizer Amplifier High Voltage Power Mgmt Vacuum DSP Gain DSP Filter icone Pulser ADC Stab Define Input 4 Input name PS Input Size Channels DetectorT ype Ge v 8192 of Service Al Memory groups 1 256 8192 OK Apply to All Help Define the Input Size always to 8192 channels Usually Avaatech reads the first 2048 channels calibrated at 20eV channel In the Genie 2K release a Si detector type is not yet available Therefore choose Ge Flat Top 0 1 DSP Filter for input XPIPS Rise Time FDisc shaping Low energy C Normal Preamp type C RC TRP Rise Time and Flat Top time are overwritten by the XRF Core Scanner Program Wi MCA Input Definition Editor local Untitled File Database Edit Devices Settings Summary Help MCA In MCA ADC Stab Amp HV Gain DSA1000 xPI Sample Changer Bots MXR Stabilizer Amplifier High Voltage Power amt Vacuum DSP Gain DSP Filter MGS Pulser High Vo
19. ast squares fitting routines The WinAxil software package contains various components WinAxil Basic X ray spectrum analysis with graphical interface WinAxilBatch Program for unattended batch operation of WinAxil on multiple X ray spectra and export facility to Microsoft Excel WaxLibManager Program to organise the WinAxil parameter file in a database environment WinFund Quantitative analysis program based on fundamental parameter method In order to achieve good processing results it is important to set up a correct parameter database that contains all the relevant XRF parameters such as tube type detector type filter materials excitation settings and measurement atmospheres This can be done with the WaxLibManager component Before WinAxil can start processing a measured spectrum file SPE it needs to know a lot of information about the measurement condition of the spectrum e g X ray tube type and settings X ray detector type excitation filter chamber atmosphere tube sample detector geometry Also a proper energy calibration is to be performed and proper peak and continuum fit parameters are to be chosen Finally the Region Of Interest and the elements of interest are to be specified If the fitting results for all the elements of interest are acceptable the processed spectrum can be saved as a WAX file This file type includes the original spectrum measurement calibration and fitting parameters and the fitting results
20. asures a specific sample with various excitation conditions For loading and saving Measurement Scripts see Special tab topic for an explanation Measurement Setup Special Measurement Setup x Basic Special Administration Special Positions cm Skip Positions cm Special Areas cm Add Tt gy oO Start Stop Step IN Delete Delete Delete OK Cancel Help During a step scan the scanner jumps with Step Size steps over the core To anticipate better on possible interesting core positions or huge gaps in the sediment surface it is possible to define Special Positions e g in between a normal step Skip Positions a normal step that should be skipped and Special Areas a possible interesting area where one would like to step with a smaller step size The entries in each list are sorted ascendant To delete a single entry from any of the three lists select the entry and click a Delete button To delete the contents of all the lists press the Delete All button To avoid re entering core parameters such like Special Positions Skip Positions and Special Areas in case a particular core must be measured more then once Measurement Scripts are introduced A measurement script can be saved or loaded from disk and contains the following parameters Sample Name Sample Length Step Size Special Positions Skip Positions Special Areas Parameters that are not included in a measurement scrip
21. e combinations of elements will be measured that will give reasonable results with one filter KV combination A few examples 1 Alup to Fe can be measured without filter at 10 kV Al up to Ti gives than good results Mn and Fe however are counted somewhat less effectively Sr cannot be measured at this kV 2 If Mn and Fe are important they are most effective measured at 12 kV with the cellulose or the Al filter Ti and lower elements will then be measured less effectively 3 Mn and Fe can also be measured at 20 kV applying with the cellulose or Al filter Sr will then be measured fairly 4 Srand Zr can be measured well at 30 kV using a thick Pd filter 5 For Ba 50 kV and the maximum mA must be used in combination with the Cu filter Further it is a matter of trial to find the optimum conditions for a combination of elements In case these conditions can not be found in one filter KV combination the samples must then be measured at two or more conditions The X ray current setting depends on the average composition of the sample To set the current to its optimal value it is important to understand the principle of dead time Dead time considerations The X rays emitted by the sample are detected and processed by the detector and its electronics The processing speed of the electronics is limited Therefore the amount of X rays entering the detector is limited Dead time is a percentage that indicates the amount of time that
22. ed files CNF However to be able to import Canberra formatted files you need a registered copy of Genie 2000 Canberra s spectroscopy software in the local PC More detailed information on how to operate WinAxilBatch is in his entire Help file or go to Quick Start Part 2 Quick Start Quick Start With the program WinAxilBatch you can fit many similar X ray spectra in an unattended mode of operation An essential step in creating a batch run is creating and selecting a WinAxil Model File See the topics How To Create a Model File and How To Select a Model File When running WinaxilBatch program Main Window controls and menu commands will help you to populate the list of To Do with those WinAxil type files that you are interested in analyzing under the batch mode Select the Model File to be applied to those files It is in the Model File were all fitting related parameters geometry detector characteristics elements continuum ROls etc are stored The different options under Program s Options makes the operation of the program easier flexible and convenient to the end user You can have the analysis results for each file reported into the program s Report Window The contents of that Window can be saved into a file Ascii or Rich Text Formatted or printed There is also the possibility to export each file peaks data directly into MS Excel 95 WinAxilBatch 0 File Options Help From Gescher Model c
23. er same experimental conditions with same detector having same continuum analytical lines or elements etc is in this situations were a tool for massive deconvolution of X ray spectra becomes handy and useful WinAxilBatch gives you the possibility to deconvolute several X ray spectra stored in WinAxil format in unattended mode For this WinAxilBatch needs of a reference were all parameters e g on the fitting elements to be fitted mathematical model to be applied etc are stored This is done by storing all common parameters in one file and then setting this file to be the reference for all the files to be deconvoluted This reference file is stored and named as a Model File Therefore before any batch procedure can be organized and performed you must create and select a Model File for your batch run See more detail on how to create a Model file here Once you have created and selected a model file WinAxilBatch program can analyze many X ray spectra in unattended mode report on their results into an Ascii file or even exports results to MS Excel Several selectable program s options make the operation of WinAxilBatch very flexible and convenient to the user To be able to run WinAxilBatch you MUST need a registered copy of WinAxil ver 4 00 and later program From version 1 4 and later WinAxilBatch allows to import analysed some other formatted files like old Axil ascii formatted files SPE and Canberra proprietary formatt
24. he measurement chamber with helium 2 Push X Ray ON switch to start the X Ray tube From here the program can perform a fully automated scan over the core and store the measured XRF spectra in the chosen data directory At a later stage the acquired and saved spectra are to be processed with a separate processing package Part 2 Launch Program Launch Program The main screen looks like this XRF Core Scanner Program inl x Scanner View Setup Help m miel Step Scan Scanner Status Panel Detector Messages Panel 16 35 44 HWGainl 160 0 Tube Voltage kY 20 0 Count Time s 15 16 35 44 HWGain2 1 7505 Eu Tube Current m4 0 030 Helium flow ml min 64 6 16 35 44 HW Gain3 0 333338 16 35 44 AmpGain 280 0875 Filter No Filter Position mm 200 0 Scan Mode Single Run mode d Current Activity Acquire Spectrum x Saved File Name PE236 13PCXPIPS 100 0mm 15s 20kV 30uA F1 spe votage 19 9 kv 0 030 ma Spectrum Display Panel 2 000 1 500 4 000 500 0 0 100 200 300 400 500 600 700 800 900 1 000 Bar c Eelt el el el Position 200 0mm Total CPS 7011 lAcquisition ON live Time 145 RealTime 15s Dead Time 8 6 20 451 key 1 Counts At the top of the screen there is the main menu Almost all the selectable items from the main menu are also accessible via the Application Toolbar buttons below it In the upper left corner there i
25. in switch otherwise the system will remain in an emergency stop status Approximately 30 seconds after activating the main switch an Avaatech logo will appear on the touch screen By touching the screen the MAIN MENU page will show up IG I Fe fr ICT To operate the scanner from the Personal Computer the scanner should be set in the REMOTE mode For scanner service and fault finding the scanner can be set to LOCAL control From this moment on various push buttons are functioning X Ray On button X Ray Off button Helium button Light button Camera Light Button Door Open button Door Close button Emergency button Only when the safety interlock circuit is activated it is possible to produce X rays The door can only be opened when the X rays are switched off The interlock lamp green is lit when the safety interlock circuit is activated This indicates that all doors are closed and locked Set key switch LOCK to ON the standby lamp white is lit Push the black X RAY ON button to activate X ray tube The X RAY ON lamp yellow is lit also the lamps on top of scanner is lit Push the red X RAY OFF button to switch off the X ray tube The HELIUM button opens a valve that enables a helium flow to the X ray detection area The flow meter must be adjusted to 10 30 ml min A mass flow meter measures the actual helium flow and causes a warning message on the data acquisition c
26. ing started manual for WinAxilBatch for more details 4 Appendices 4 1 Specifications Mechanical Weight 1225 kg Dimensions W 340 cm D 80 cm 170 cm with door closed H 220 cm with door open Electrical Input voltage 230 V AC Input frequency 50 60 Hz XRF Core Scanner computer and electronics 2500 W Gasses Pressure Helium type 4 6 bottle 50 1 200 bar 0 5 1 bar X ray generation Voltage range 4 50 kV Current range 0 2 mA Anode type Rhodium Tube sample filters Al Pd Thin Pd Thick Cu Irradiated sample length 0 1 10 mm Irradiated sample width 2 15mm X ray detection Multi Channel Analyzer 2048 channels 20 eV Ch FWHM 5 9keV better then 190 eV X ray shielding and safety Shielding materials Stainless steel 8 mm thick in direct beam area 3 mm thick for indirect excitation shielding Lead PMMA alloy window 25 mm thick Safety mechanism Automatic safety interlock circuit with a first switch off X rays then open door philosophy The door can only be opened after switching off the X rays manually Door is locked when X rays are switched on The X rays can only be switched on manually after an automatic check of all safety switches and status of the cover and service door locks The X rays ON warning lights near X Ray ON switch on top of scanner are FAIL SAVE If a light bulb is broken the X rays can not be switched on Sample dimensions Allowable co
27. ion condition and data file directory are to be set in the Measurement Setup window The Calibration Scan settings Position and Data File Path determine the behavior of a calibration scan A calibration scan is meant to monitor the systems long term stability At regular time intervals the user can measure a reference sample that usually is positioned at the left side of the scanners cm position This position is entered as an absolute positive value in millimeters counted from the scanners homing switch The reference sample at such a location can be permanently available for monitoring The Data File Path is the directory were the spectra are stored and overrules the usual data directory path This helps to collect all the long term monitoring spectra at one central location The spectrum file name automatically contains the time and date of the measurement The excitation condition is to be set in the Measurement Setup window and should always be the same Instrument Settings Com Ports Instrument Settings The scanner requires a serial COM port on the computer The Scanner port setting determine which port number physically connects to the appropriate device If a settings is changed the program should be re connected to the scanner in order to activate the new settings Measurement Setup Basic Measurement Setup x Pore j Special Administration Data Directory C Data Change Sample
28. ion of the scanner in mm Total CPS Total count per second counted by the multi channel analyzer Acquisition Status of Multi Channel Analyzer On Off Live Time Elapsed Live time of current measurement in s Real Time Elapsed Real time of current measurement in s Dead Time Percentage of Dead time in detection circuit in 96 Energy Intensity Cursor values in keV and Counts See also Energy Calibration parameters on Instrument Settings window Part 4 Instrument Settings amp Measurement Setup Window description Instrument Settings Excitation Instrument Settings x Spectrum Display Scanner COM ports Tube Voltage KV 20 po p 50 kV Tube Current pA 50 1000 p Count Time hmm user 1 No Filter z Pre defined excitation list 1 20kV 0 200m4 5s Filter 1 No Filter 2 10k 0 200m4 4s Filter 2 Cellulose Excitation List 4 Load Save As Add Delete Clear To set an X Ray excitation condition adjust the kV and mA sliders with the left mouse button pressed at the correct value Select the appropriate CountTime and Filter between X Ray tube and sample If the new excitation condition will often be used it could be added to the pre defined excitation list The contents of the pre defined excitation list can be cleared with the corresponding buttons An excitation list can be saved to or loaded from disk This pre defined
29. irectory is C GENIE2K MIDFILES Files Info Done Em Help Important note Before an existing MCA setup can be opened for modification it is necessary to unload this setup from the database first After modification the new setup must be saved File Save Finally the new setup must be loaded again into the database Different MCA setups MID files can be created and saved on disk Only one setup can and must be loaded into the database
30. l appear When the cause of the error has been found and eliminated the system should be re activated again To recover from an emergency stop pull the red emergency stop button out and press the blue RESET EMERGENCY STOP button In any case press always the RESET ERROR and RESET CYCLE buttons at the touch screen These buttons are available on the Main Menu Screen XRF Core Scanner Program V 3 0 Description of default values for various hardware and non hardware dependent parameters August 2006 Bob Koster Hardware dependent parameters These parameters are stored in the configuration file HARDWARE INI that should be located in the same folder as the main application XRF EXE Ifthe configuration file can not be located and opened the main application wil choose the default values shown below The main application will not generate a new configuration file A new configuration should be created or retreived from the install disk by the user Changes to the values must be made by a text editor Default value Description Helium Threshold 5 0 5 0 ml min Lower values mean Helium gt Off Range 1000 0 1000ml min Mass flowmeter range at 10V output Factor 1 455 1 455 Correction for N2 calibrated meter Tube MaxkV 50 0 50 kV HV Power supply output 10V input MaxmA 1 00 1 50 mA HV Power supply output 10V input MaxPower 50 50 Watt Max allowed tube power air cooled Scanner Length 160 150 cm Max allowed core length Fi
31. lements even if they are not seen Get the best quality fit on this spectrum Save it Save it again as a Model file Select in WinAxil main menu the command File Save As and select Model File amf file extension in the Common Dialog Box Save it under same name or a different one e g using more explicit naming conventions selects its location Be sure that you file have been correctly saved under the name and location you had selected and with extension afm example c WinAxil samples nist afm After starting WinAxilBatch program select this files as the Model File and create the list of files to be analyzed during the batch run XRF Processing Schema XRF Acquisition Data in BSA spe spe spe Pr Win Axil Batch Model WinAxil afm afm 10 KV Model file 50 KV Wax Model file Excel Wax Wax Lib Detector Spectra x Cal Exc Env Cond y ray tube M5 Access Database Medi a Canberra X PIPS DSA 1000 configuration description Version 1 1 June 2007 AvaaTech Bob Koster Step 1 Install Canberra Programming Libraries Step 2 Create MID file using the MCA Input Definition Editor Step 1 Install Canberra Programming Libraries Insert the Canberra Genie 2k installation CD ROM version 3 0B in a CD rom drive gt Genie 2000 Programming Library V3 0 Installation E m zi xi I y u Using This CD a Install Programming Library
32. ltage Supply for input XPIPS Range Yoltage limit Voltage Inh signal 1300v 420 0v _ Positive M E a E Negative 1300 0 Currently the 0 5mm X PIPS Si detectors are using internal generated Bias voltage The 1 5mm X PIPS Si detectors will use external High Voltage bias signals The polarity and range need then to be adjusted to the X PIPS requirements MCA for input XPIPS MCA Full Memory e ik 2 4k Bk C 16k C 32k C No of ADCs Acq Mode CO E E mcs Device Serial Number 07027597 Cancel Help sure the serial number corresponds with the DSA 1000 serial number DSP Gain for input XPIPS Gain Attenuator p Coarse gain rFine gain S fine gain Off x40 1 000002x in u 0 900 1 900 0 9975 1 0025 r FDisce Mode r FDisc Setting Inp Polarity pinh polarity Auto C Positive Positive C Manual cr gt Negative Negative 0 100 LLD Mode LLD Manual gt 0 100 een Save the current MCA setup File Save As File name XPIPS MCA Input Definition Editor locaEXPIPS File Database Edit Devices Settings Summary Help MCA Input Size ADC Stab Amp HY Gain Load the new MCA setup into the database Database Load To 4 Load Definition to Database File Name XPIPS MID D
33. lters Filter1 No Filter Description of filter 1 Filter2 Al Description of filter 2 Filter3 Pd Thin Description of filter 3 Filter4 Pd Thick Description of filter 4 Filter5 Cu Description of filter 5 DSA HighVoltage 150 150V Detector High Voltage RiseTime 18 4 5 6 us Digital filter risetime FlatTop 0 1 0 8 us Digital filter flattoptime Channels 2048 2048 No of channels to read from DSA User controlled parameters The following described parameters can be accessed and changed by the user through the GUI of the main application All parameters are automatically loaded and saved in binary mode to disk These configuration files are located in the same folder as the main application XRF EXE If a configuration file is missing a new one will be generated using default values Changes must be made through the GUI of the main application Instrument Settings are stored in binary file SETUPINSTRUMENT CFG Excitation Display Scanner COM Ports Parameter Tube Voltage kV Tube Current mA Filter Count Time Excitation List Offset Gain Sample Offset Sample Safety Margin Stability Test Position Stability Test Cycles Calibration Position Calibration Data Directory Scanner Com Port Default value 20 kV 0 15 mA 1 15s Empty 0 eV 20 eV Channel 142 mm 5 mm 100 mm 10 10 mm Application Directory Com 1 Measurement Settings are stored in binary file SETUPMEASUREMENTS
34. mation of only the upper tens of micrometers of the sample Therefore it is important to avoid any form of contamination When the Ultralene foil is applied air bubbles can be enclosed between the sample and foil These air bubbles must always be removed because they absorb X rays and influence the data quality X ray fluorescence analysis demands a flat and homogeneous surface Sometimes it is necessary to carefully smoothen the sediment surface after the foil has been applied This can be done using a roll of tape by rolling it gently from one side to the other Always be careful not to contaminate the surface 3 4 Data acquisition Before the data acquisition can start two important settings must be chosen 1 count time how many seconds to measure at each position The count time setting is a trade off between data quality and scanning speed Values between 10 s and 60 s are most common 2 X ray excitation which kV mA and filter settings are appropriate In general for the best results of K line analysis a combination with certain kV and mA values can be applied no filter is used for Al up to Fe at about 10 kV an Al filter for S up to Mn 10 to 20 kV athin Pd filter for Ti up to Ge 10 to 25 kV a thick Pd filter for Fe up to 20 to 40 kV a Cu filter for Zr up to Ba at about 30 to 50 kV For heavier elements than Ba the L lines are used for analysis For pragmatic reasons such as lack of tim
35. measurement See part 6 for detailed description of setup screens Help Menu The Help Menu contains two items Help Contents Start the Win Help program with the contents tab selected About Shows an about box with company information Development by N I O Z and AvaaTech XRF Core Scanner Software Version 3 0 January 2006 Bob Koster Copyright AvaaTech Analytical X Ray Technology Wagenmakerstraat 11 NL 1791 EJ Den Burg Texel Netherlands E mail info ayvaatech com Internet www avaatech com Initiative Royal Netherlands Institute for Sea Research NIOZ P O 59 NL 17904B Den Burg Texel Netherlands Internet http www nioz nl Application Toolbar l E 151116 Connection button Instrument Settings button eA Measurement Setup button Step Scan zl Scan Mode selector in Start Scan button E Stop Scan button Spectrum Toolbar el lelt amp eei l lel Select Linear or Logarithmic vertical scale E Display a stored spectra with different colors Remove overlaid spectra from screen only BER Make a hard copy of the Spectrum Display Panel 4 x Move Shrink and Expand spectrum horizontally Expand and Shrink spectrum vertically ae Auto Scale spectrum vertically and horizontally Status bar Position 200 0mm Total CPS 7011 Acquisition ON Live Time 14s RealTime 15s DeadTime 8 6 20 451 keV 1 Counts Position Current X posit
36. nVNC EIER Siemens SmertClient Desktop WinVNC DAR Bestand Bewerken Beeld Geschiedenis Bladwijzers Extra Bestand Bewerken Beeld Geschiedenis Bladwijzers Extra Disconnect Options Clipboard Send Ctrl Alt Del Disconnect Options Clipboard Send Ctrl Alt Del x Settings Init Local StandBy Busy no Remote Core Fit GoTo ef ves Reset Error Position 5 80 1mm 0 1 mm Reset Cycle 8 80 Select Screen 7 Select Screen Destination Irradiated sample length 0 1 10 mm See main menu Touch Screen SLIT By the small steps from 1 mm 0 1 GoTo 2 mm and than Goto with 0 1 mm steps to your adjustment Push left arrow button above steps mm GoTo Push left arrow button under steps 1 mm GoTo Push right arrow above steps 0 1 mm GoTo Push right arrow under steps 1 mm GoTo Irradiated sample width 2 15mm Huberslit Turn Right Close Turn left Open One turn is turning the knob van 0 10 1turn 2mm 2tun 4mm 3turn 6mm 4turn 8mm 5turn 10mm 6 turn 12 7turn 14 7 5 turn is maximum 15mm 3 5 Data processing The stored XRF spectra need to be processed to obtain X ray intensity data Processing consists of subtracting a background curve applying statistical corrections for physical processes in the detector and deconvolution of overlapping peaks After that the peak integrals are calculated and stored See Gett
37. nner Menu View Menu Setup Menu Help Menu Application Toolbar Buttons Spectrum Toolbar Buttons Statusbar Instrument Settings and Measurement Setup Description Spectrum Processing Spectrum File Format Using Canberra s WinAxil for Processing How Dol Connect to Scanner Start a Step Scan Start a Calibration Scan Start a Stability Scan Reset a scanner error on the touch screen vaa ac UE Core Scanner 1 Contents of this manual is based on the Windows help files supplied with the XRF Core Scanner Software XRF Core Scanner was developed by the Royal Netherlands Institute for Sea Research and exclusively distributed and supported by AvaaTech Analytical X Ray Technology Part 1 Introduction to the XRF Core Scanner Software Introduction The XRF Core Scanner Program is a multi threaded application that runs on a personal computer with a WIN32 based operating system like WinXP and Win2000 and connects to the XRF Core Scanner and to all of its scientific instruments The program controls all the instrument settings via the Instrument Settings window and can perform a XRF scan on a split sediment A core position description the X Ray excitation and measurement parameters are to be defined in the Measurement Setup window If a split sediment core has been put in the XRF Core Scanner the user needs to perform two things over which the program has no control 1 Push the Helium switch to flush t
38. omputer when the helium flow is below 5 ml min The LIGHT SCANNER button activates the spot lights inside the scanner The LIGHT CAMERA activates the linear light source of the camera system The DOOR OPEN button opens and the DOOR CLOSE button closes the door that gives access to the core fit section of the scanner When the cover closes care must be taken for hands and fingers For safety reasons the cover is locked when in closed position The door can only be opened when the X rays are switched off Warning If the air cooled X ray tube was operated at maximum power it is recommended to keep the door closed for 5 minutes after switching off the X rays This enables the X ray tube to cool down and avoid the activation of the thermal fuse of the tube See section 4 2 trouble shooting for more details ET Pressing the EMERGENCY STOP button immediately stops any scanner or door movement and switches off the X ray tube To recover from an emergency stop pull the emergency stop button out and press the RESET EMERGENCY STOP button To recover from an emergency stop also press the RESET ERROR and RESET CYCLE buttons at the touch screen These buttons are available on the Main Menu screen 3 3 Sample preparation To prevent contamination of the helium flushed measurement triangle the surface of the sediment core is covered with a very thin Ultralene foil 4 thick X ray fluorescence analysis gives chemical infor
39. re length 30 160 cm Allowable core width 50 130 mm Scanner positioning X direction Range 0 160 cm Accuracy 0 003 mm Z direction Repeatability 0 05 mm or better XRF analysis Detection limits of some elements Measured at 10kV no filter and at 30 sec count time Detection limits Avaatech XRF Core Scanner The estimated detection limits for 20 sec counting time for a typical muddy sediment sample is Al 0 2 Si 0 1 P 0 05 S 0 05 K 0 04 Ca 0 02 Ti 0 05 Mn 100 ppm Fe 45 ppm Sr 5 ppm Zr 20 ppm Ba 40 ppm Measured at 50 kV 1 mA Cu filter and 30 sec Count time 1500um detector Ba 200 ppm At 100 sec count time this is somewhat lower 4 2 Trouble shooting Problem Action Problem Action Problem Action Problem Action Problem Action Problem Action Problem Action Problem Action The X rays can not be switched on The safety interlock circuit detects an unsafe situation Check that the cover and service doors are closed and locked If the cover is closed push down the cover into its lock Check safety switches of the cover and service doors Check emergency button Check both X rays ON light bulbs on top of scanner and miniature light bulb on front panel The X rays can not be switched on The X ray tube can be over heated when used for a longer period on maximum power There is a thermal fuse on the outside of the X ray
40. rt Peak Data File Data Excel LiveTime q LiveTime RealTime gt 4 RealTime MeasurementD ate MeasurementD ate MeasurementT ime SamplelD In the left list box are listed all types of data that are available in WinAxilBatch after the fitting of a spectrum is performed Out of this list you can select those that you would like to have in your Reports Long type only or exported to Excel if Export To Excel option has been chosen Populate the right list box with the items data type you are interesting on To add delete items to from the right list box use the command buttons in the middle Once a selection has been made it is stored into the WinAxilBatch ini file Whenever this Peak Data Option is called again the set of previously selected set of data will appear in the right list box for your approval or changes Action on the Cancel command button will discharge any changes to this set of program s option For exporting individual file parameters see File Data File Data Using the settings organized under the file data of program s Option form the user can specify the file measurements related parameters to export MS Excel Since this parameters are single and unique per stored spectrum file their contents will occupy a single column in the MS Excel worksheet The following File s Data can be extracted and exported into MS Excel Spectrum ID SPEC ID LiveTime sec MEAS TIM RealTime sec MEAS TIM Meas
41. s a Scanner Status Panel that shows various parameters as a scan proceeds In the upper right corner there is a Messages Panel that shows the various communication commands between computer detector and scanner This panel can be useful to locate the sources of possible errors Below there is an X Ray Tube Status Panel that shows the actual X Ray tube status These values are only updated if the program is connected to the scanner The largest panel is the Spectrum Display Panel The live acquired spectrum is always displayed in red At any given moment an older spectrum can be read from disk and displayed as an overlay in the Spectrum Display Panel The appearance of the spectra in the Spectrum Panel can be manipulated with the buttons from the Spectrum Toolbar At the bottom of the screen there is a Statusbar that shows spectrum related parameters as the scan proceeds Part 3 User Interface Scanner Menu The Scanner Menu contains two items Connect Connects program to scanner and its instruments Hardware Control Direct control of scanner X Ray tube and detector Exit Terminates the program View Menu The View Menu contains three items Scanner Messages Shows the logged messages from the scanner Detector Messages Shows the logged messages from the X ray detector None Setup Menu The Setup Menu contains two items Instrument Settings Contains settings related to scanner Measurement Setup Contains settings related to the
42. t are Data Directory Excitation condition Measurement Setup Administration Measurement Setup 37 126 MES o 1275172005 388 Aest Beet This program keeps track of the number of measurements done and the length of the samples that have been scanned The counters can be reset to zero for a specific project Another pair of counters can be used to register the systems total usage Part 5 Spectrum Processing Spectrum File Format The spectrum files are saved with a SPE file extension SPE files are Block Structured Ascii BSA files that can be viewed or modified with any available text editor A BSA file is divided into blocks Each block is identified by a string that starts with a dollar sign and ends with a colon thus BLOCK_NAME The structure of the data in each block is uniquely defined the order in which blocks appear in the file is however not defined NECESSARY BLOCK DATA spectral data first_chan last_chan chan cont first chan chan cont last chan OPTIONAL BLOCKS SPEC ID core position in mm spectrum id MEAS TIM spectrum measurement time in seconds livetime truetime DATE MEA start date of measurement month day year hour min sec Using WinAxil for Spectrum Processing Canberra s WinAxil can be used for spectrum processing WinAxil is based on the international well known AXIL Analysis of X ray spectra by Iterative Le
43. tly into MS Excel See more on Exporting Data to Excel Default file type Will select the default file format to appear in the file selector It can be chosen between SPE Ascii formatted old AXIL files WAX Binary formatted WinAxil files CNF Canberra s propietary binary format Model Using this option you can set the default WinAxil Model File When this option is set the program always loads automatically the defined WinAxil Model file at each start up To select the default Model File type into the corresponding text box the file name and its full path or alternatively select the locator command button near it A Windows common dialog box will be prompted to help you to locate select the corresponding file Please notice that only existing files and files of the type of Winaxil Model File amf can be selected You can still run WinAxilBatch with a different Model File from the one defined as default by selecting it from the program s Main Window See more on How To Select a Model File Report Here you can select your preferences for Reporting in WinAxilBatch Report Type Here you can chose between Long type of Reports or Short ones Selection is exclusive Clear Report Screen on every new Run By checking this option the Report Window content s will be cleared every time a new batch run is started Although this are the default modes for the operation of the program you can still select a different
44. up parameters should be properly set Connectionscreen ___ x Tying to connect to MCA BEBBEEEBEBENNS lt Trying to connect to scanner BBBEEEBEBBNS How l Start a Step Scan Make sure that the program is connected to the scanner Click the Measurement Setup button on the Application Toolbar Fill in Data Directory Sample Name Sample Length Step Size and choose an appropriate X Ray excitation Close the Measurement Setup window by pressing the Ok button Select the Step Scan mode with the Scan Mode selector Be sure that the Helium and X Rays are switched ON at the scanner Press the Start button to start scan Step Scan alm How Do 1 Start a Calibration Scan A calibration scan is meant to monitor the systems long term stability At regular time intervals the user can measure a reference sample that usually is positioned at the left side of the scanners 0 cm position The spectrum file name automatically contains the time and date of the measurement The excitation condition is to be set in the Measurement Setup window and should always be the same Make sure that the program is connected to the scanner Click the Measurement Setup button on the Application Toolbar Choose an appropriate X Ray excitation The other parameters are ignored Close the Measurement Setup window by pressing the Ok button The Data File Path and measurement Position are taken from the Instrument Settings
45. urementsDate DATE MEAS UserlD USER ID Where in the second column the corresponding old Axil or SPE block identifier is given for reference Populate the right list box with the items data type you are interesting on The add delete items to from the right list box use the command buttons in the middle Once a selection has been made it is stored into the WinAxilBatch ini file For exporting peaks data see topic Peak Data Part 5 WinAxil Model Files Select a Model File WinAxilBatch must have a Model File to run The different sections stored into this WinAxil Model File is then applied to the WinAxil files by the fitting program To select a Model File in two ways 1 On the run From the program s Main Window Click on the command button with the label Model on it After that a Window s Common Dialog Box should be prompted for you to make the corresponding file selection 2 Defining a Default Model File in Program s Options From the main menu select Options Program Options Select Tab Model And there type the Model File path and file name or use the file selector button to locate it For both cases notice that you are able to chose ONLY WinAxil Model Files types with file extension AMF Selecting a model file on the run part 1 above will supersede any default model file already defined but it will not get stored as the default one for the next run Create a Model File Win
46. y data sheet 1 General information 1 1 Description of the XRF core scanner The XRF X Ray Fluorescence Core Scanner is originally designed for rapid and non destructive determination of the chemical composition of marine bottom sediments onboard ships and at laboratories ashore Marine bottom sediments are often sampled by means of box cores gravity cores and piston cores and collected in plastic tubes which are subsequently split in length The XRF measurements are carried out on split cores As an example the XRF core scanner is able to perform a complete scan of a one meter long core with a sample resolution of 1 cm within 30 minutes or faster This gives the possibility to take a new core in the same area if the chemical data show that the core does not contain the expected information or that errors were made with coring The core scanner is equipped with a motor actuated door that gives access to the core fit system The core fit system can fit a split core by mechanical system The XRF analysis method requires an X ray source and detector to be positioned accurately above the sediment surface Therefore a computer controlled positioning system positions the core and the instruments accurately even if the core is not cut very homogeneously Instead of a split sediment core other sample holders can be fitted and measured in the scanner For example samples on a microscope glass can be measured without problems The demand for proper

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