PHOS shift user manual
Contents
1. READY OFF a 3 353398535 lt I P orotan pe xl iea ba ase b 1 2 3 4 Uphos aldaqacrdd phs alidcscom075 xrdesktop alidcsco MIN N CEFER gt E a e Ei Use the upper button and select Go Ready to turn these channels on Note all channels should be selected and turned on simultaneously using the top button don t turn on each channel separaterly Program the RCUs by logging on to alidcscom075 ssh phs alidcscom075 Go to the directory home phs bin and run the script gt program_rcu_171109 sh RCU where RCU should be 84 85 86 and 87 Note It sometimes happens that programming the RCUs trips the LV If this happens repeatedly one can first turn on channels WIE193 CHO _CH2 CH6 CH8 i e all except _CHA4 and program the RCUS and turn on the WIE193 CHA afterwards For Modules 3 and 4 Select the first two LV channels not the 13 V These are WIE191 CHO WIE191 CH 2 for Module 3 and WIE190 CHO WIE190 CH2 for Module 4 Use the upper button and select Go Ready 22 Program all the RCUs on these two modules Log on to alidcscom075 ssh phs alidcscom075 Go to the directory home phs bin and run the script2. gt program_rcu_171109 sh RCU where RCU should be 92 93 94 95 for Module 3 and 88 89 90 91 for Module 4 Go back to the LV control window and select the remaining 3 LV channels not the 13 V These are WIE191_CH 4 6 8 and WIE190_CH 4 6 8 for modules 3 and 4 respectively Turn the channels ON using the upper button and select Go Ready 2 Start the phos gui if it is not already running To do this log on to alidcscom075 and go to the directory home phs phos_dcs bin and enter gt startgui sh For more info on the phosgui see p 5 7 In the phos_gui connect to all modules Then click Go Ready for each module 3 Do a test run and check that there are no CDH errors How to do this is explained in the previous section Standalone runs under data taking Take a pedestal run and check that at least 30 events are collected Check the infoBrowser for CDH errors If there is a CDH error check which DDL produced it and restart the corresponding Module go back and repeat steps 1 3 If the module cannot be identified all modules should be restarted repeating steps 1 3 If after 3 attempts there are still problems contact an expert 4 The FEE cards are turned ON using the phosgui If the phos_gui is not already running log on to alidcscom075 and go to the directory home phs phos_dcs bin and enter gt startgui sh For more info on the phosgui see p 5 7 Turning on the RCUs should be done one module at the
3. to start MUI manually fig 3 Fig 3 For automatic MUI start put D Shortcut to PVSS_startup_file bat into the Start Programs Startup folder 1 Then you should be authorized once more by entering your NICE login and password into PHOS DCS access window fig 4 NICE login NICE password LOGIN Log in Fig 4 29 APPENDIX B The DCS Padlocks DCS Padlocks Padlock is unlocked it means that the control is free and anyone can take over To take control LM button TAKE To release control LM button RELEASE_ALL Padlock is locked it means that the system is under control In yellow frame something excluded control over part of the system In orange frame something excluded control over part of the system and or shared control Green only we have control Blue we share control with someone Grey nobody has control Orange red someone takes control Strikethrough if this mark appears on any of the padlocks even after you have taken control the subsystem corresponding to this padlock will still be uncontrolled In order to take over this subsystem unlock the padlock DAQ Padlocks 30 APPENDIX C The PHOS interlocks and alarms Interlocks were made to save our detector in case of emergency state and or incorrect operator reaction In case of error the interlock switches the system into safe mode and informs the shifter 1 HW Interlocks Water Cooling Pla
4. For Modules 3 and 4 i Switch ON the first 2 LV channels not the 13 V ii Program all the RCUs 92 95 and 88 91 iii Switch ON the remaining 3 LV channels not the 13 V 2 Open the phosgui and connect to all modules Click reset and go ready 3 Do atest run and check that there are no CDH errors 20 To be able to do a run before the HV is ON you have to exclude the PHS power supply in the dcs PHS_PWS_TOP gt exclude Turn ON the FEE cards Turn ON the 13 V LV channel Load and apply the APD settings Configure electronics Turn ON HV Q o dep au dE If the TRUs should be read out they can be turned ON and configured now More details on how to Switch ON power 1 Switch ON LV and program the RCUs Note that there are different procedures for how to switch on the LV in Module 2 and Modules 3 4 respectively The Low Voltage LV is handled by the Main User Interface MUI To open the LV controls click on PHS PWS PHS PWS MODULE 2 gt PHS PWS LV MODULE2 for LV of Module 2 and similarly for Modules 3 and 4 For Module 2 Select the 5 lowest channels WIE193 CHO CH2 _CH4 CH6 CHB8 as shown in the figure below 21 X rdesktop alidcscom072 TSM Control PHS PWS 1 MODI System lo A BERI 155 e Sub System State PHS PWS MEIS CHO OF
5. Local Recording OFF xj GDC NO Recording v DCS RUN CU HLT c e STANDBY RUH OK DERD RERDY STANDALONE_STOPPED DCA info 16 08 26 HLT is unlocked If the padlock is red ask the ECS operator to release DAQ control Then click on the padlock and lock it It should then be green as in the figure above Unlock the DAQ RC padlock Click on view gt Show DAQ Control to open the DATEPHOS DAQ gui 18 X DATEPHOS_DAQ PHOS_CONTROL mu Ce dii Hle View Options Windows Status updated PHOS DAQ Run Control HI running on aldaqacr48 with PID 628 RC running on aldagecs01 with PID 12485 Ready to start Data Taking must rm CN prem E nu e me EI mE ux Local Recording OFF f GDC NO Recording RUN HUHBER 91692 Run Control Status READY 4 i 4 1 i 4 Lock the main padlock in this window DATEPHOS DAQ Then click the gt arrow following Disconnected Configuration Then click the gt Following Connected Run Parameters Unlock the padlock in this window Note If one has to change which ddls that should be read out it can be done as follows but this is something which should normally not be done by the shifter more details are in the expert manual click Define under Disconnected Configuration then choose Detector then choose PHOS Select the LDCs that should be read out In the small ALICE DAQ window cl
6. Oxb Pre Samples 11 L1 LATENCY 0x2104 Latency BC 260 Uncertainty BC 2 L1 MSG LATENCY 0x1040c80 Min latency BC 260 Before one can do anything with it one has to connect to the RCUs To define which RCUs to connect to do connection gt Connection Settings Then do connection gt Connect now The gui shows the status of one module at the time To select module use the buttons at the top Module 2 Module 3 and Module 4 When the gui starts all cards appear grey To find out the status one should click Update status The color will change to White Off Green On Red Error or Black no connection Note This should never be done during a run The buttons On and Off turn on off all FEE cards on one RCU Individual FEE cards can be turned on off by clicking on the FEE card The Go Ready button cofigures the electronics and disables enables trigger The Reset button resets the electronics for example if PHOS goes busy It should be followed by Go Ready The configuration settings can be modified by clicking Configure Electronics The window on the following page will appear One can select the configuration options ZS on or off mode for subtraction of pedestals number of samples etc The same window is used to load the APD settings NOTE One should never do anything with the phos_gui when a run is ongoing Not even clicking Update Status The reason for
7. 50 at 25 C Load Apply to module wait status 1 SUCCESS should be seen in the bottom frame of the phos gui it might be 24 needed to scroll up to see this e click cancel Repeat the above for all 3 modules Note that this may take up to 5 min per module 7 Configure electronics This can be done for all modules at the same time Go to the phosgui and click connection gt connection settings and select all modules Click connect gt connect now Click configure electronics In the Configure Electronics window e Select number of pre samples and samples Zero suppression enable disable Sparse readout enable disable threshold and offset if applicable o For pedestal run select zero suppression OFF and sparse read out OFF Select 11 presamples and 51 samples Do not set the threshold to 0 o For LED run select zero suppression ON threshold 3 offset 0 and sparse readout ON Select 11 presamples and 51 samples o For global cosmics collisions runs select zero suppression ON threshold 3 offset 0 and sparse readout ON Select 11 presamples and 51 samples Click Save and then Cancel For each module click Go Ready 8 Turn ON HV This is done from the MUI PHS PWS gt PHS PWS MODULE 2 gt PHS_PWS_HV_MODULE The panel is shown on p 12 Enable all channels and select GO READY in the top buttom The ramping takes about 30 mins 25 APPENDIX A Description of the Main User Interface M
8. Danger h 60 switch off the HV power of the alarmed PHOS module inform the PHOS Run Coordinator 3 5 Dew point temperature for each PHOS module not implemented Warning the temperature inside the warm volume of the PHOS module is close to the dew point temperature 3 Degrees Alarm the temperature inside the warm volume of the PHOS module is close to the dew point temperature 2 Degrees inform the PHOS Run Coordinator Danger the temperature inside the warm volume of the PHOS module is around or less than the dew point temperature switch off the HV power for the alarmed PHOS module inform the PHOS Run Coordinator 3 6 LED VME crate Warning VME crate is off or doesn t respond inform the PHOS Run Coordinator 33 3 7 Cooling water pressure for all PHOS modules e Warning 975 lt p lt 985 mBar pay attention to the high level of the water cooling pressure e Alarm 985 lt h lt 995 mBar switch off the power for all PHOS modules inform the PHOS Run Coordinator e Danger h 2 995 mBar immediately switch off the power of all PHOS modules in the emergency mode inform the PHOS Run Coordinator 3 8 Wiener LV temperature e Warning 45 C lt t lt 55 C pay attention to the high level of the Wiener channel temperature e Alarm 55 C x t 65 C switch off the power of the PHOS module where the alarmed LV Wiener channel presents inform the PHOS Run Coordinator e Danger t 2 65 C immediately
9. G Voltages and currents Typical LV voltages and currents everything ON including TRUs Module 2 Ch 0 Ch 2 Ch 4 Ch 6 Ch 8 13 5 V LV V 4 6 4 2 5 0 5 8 7 2 13 7 I A 22 51 64 12 45 15 Module 3 Ch LV V 4 6 4 1 5 0 6 1 TA 13 7 I A 20 44 60 11 45 19 Module 4 LV V 4 7 4 2 5 0 6 1 7 0 13 6 T A 26 45 58 10 40 13 Typical HV voltages and currents Module 2 V 395 V I 8 mA Module 3 V 395 V I 8mA Module 4 V 350 V I 7 0 7 5 mA except channel 7 I 10 mA 38 Appendix H PHOS Check list PHOS DCS Summary panel To be convinced that the detector is in a safe efficient condition the following parameters should be checked 1 Check the list of urgent messages PHOS panel Alarm screen fig 15 available from MAIN DCS GUI fig 11 6 2 Check the status of interlocks on panel PHOS DCS summary PHOS Check list fig 16 available from MAIN DCS GUI fig 11 Summary 3 Check the status of Cooling Plant PHOS DCS summary 4 Check the temperature and pressure of FEE water cooling Pressure PHOS DCS summary It should be above 800 mBar Temperature and pressure fig 17 are available from http alicedcs web cern ch AliceDCS monitoring main aspx Temperature should be 10 20 C pressure should be less than 985 mBar e Check the status of LV PHOS DCS summary e Check the status of HV PHOS DCS summary e Check
10. histograms The number of hits don t have to be the same The number of hits is normally largest in Module 2 and smallest in Module 4 The following 6 plots should all have entries The mean and RMS should be compatible with the example below Sorry that this perhaps is rather vague but more precise criteria for good vs bad runs are not yet available The DQM plots are monitored online by the DQM shifter but an extra cross check should be done These checks should be done at lest once per day when there is Physics data taking There are also QA plots in HLT that can be consulted during a Tun 4 Take pedestal and LED runs when needed Given the stability we have observed it is sufficient to do this once per week 5 It is recommended that each On Call subscribes to the phos alarm cern ch mailing list This can be done from here http www cern ch groups You will then get an e mail when a software or hardware interlock is triggered DQM Plots for PHOS from the logbook for a good pp run flow Gain Hits in EMCA PHOS modules x10 e Gain Hits in EMCA PHOS modules flow Gain Total Number of raw hits in PHOS LT E I xi re an E F 2000 F 14 aso E 1800 E 2r E F 300 1600 E for 20E 1400 F E 1200 F ar 20E L E 1000 s 180r 800 F 4r 100 F E or 2 SS soE E 200 obuuuhut PATA doa adc d glaub REA PY RARA RPA RAI Qh eli 0 05 115 2 25 3 35 4 45 5 0 05 14 1
11. respond not implemented eeeeenee 34 ad Alari S CHO CIN scere iue eredi ur tr en ta re tau e da bighi Re Ee OD n peer e Eu ec e Drs ea C a Rad 34 SEN BITES Vahd SONS DAC AE 36 Appendix D Association of RCUs with DDLs and LDCS sseeeen mmm 37 Appendix E PHOS Computers at Point 2 2 7 5 1o ce EX prp up ek y enc EE YER SE dE Rub FOE Vr RI PPIR2XRrre rae rRS 37 Appendix E Events SIZES oserei panene PE Res LEE PRA NP AEE RM PUE SER EE M I MM MI RPM E DM riv UEM Rp PuEEE 38 Appendix G Voltages and currents sess nnne nnne nnn nnn nnne nnne nnus rure serrer 38 Appendix H PHOS Check list PHOS DCS Summary panel cosi etes EE na pa OR tr ru Fux E prhx ix xx Ea pEA 39 Appendix Some information about PHOS construction seeseseseeneneeeeeee 41 e ERREICHEN 42 1 General PHOS is controlled from the two PCs aldagacr48 and aldagacr49 in the ALICE Control Room ACR The DCS system is run from the windows machine alidcscom072 and the front end cards and RCUs are controlled from the linux machine alidcscom075 One logs on to these machines from aldaqacr48 and 49 On alidcscom072 each user logs on with his her own username CERN nice username and on alidcscom075 the user is phs Login to aldaqacr48 and aldagacr49 Login phos Password all passes are at the PHOS working place in ACR on paper Hint If only one of the two screens are on press ctrl alt
12. this is that the information to and from the phos_gui goes on the same data bus as the real data If the phos_gui hangs one can exit by pressing Ctrl Alt Ctrl Alt backslash If there are problems connecting to some RCUs check that the FEE servers are running using did see p 15 READ OUT SETTINGS APD Setting Read aut regian HG LG All modules gain 50 25 Created on 11 08 2009 C Enable TRU Readout Pre samples Samples TRU Sar Up MER X Use fixed pedestal Revision o B Threshold Offset G AH L B X Enable Zero Suppression X Enable Sparse Readout Multi Event Buffers Checkin New File ae cate st The phosgui window for setting the configuration 2 Basic Operation The normal state of PHOS during running cosmics or collisions is to have all Low Voltage LV and High Voltage HV channels on The FEE cards should be on and the electronics should be configured The PHOS shifter should make sure that this is the case and correct any upcoming problems If a problem cannot be solved the PHOS OnCall shifter should be called Note The HV should never be on without the LV also being on If something appears to be seriously wrong or the PHOS HV have to turned off quickly for some reason there is a simple button for moving PHOS into SAFE mode Moving PHOS into SAFE mode emergency button e Click Right Mouse RM on 17 PHS Go Safe go to red e then within 10 second
13. 1 PHOS DCS Manual 2007 Authors Sergey Nikolaev Alexander Mamonov Oeystein Djuvsland Joakim Nystrand Yuri Kharlov Mikhail Bogolyubskiy Last modification 20 6 2010 by Joakim Nystrand Sergey Nikolaev 42
14. 3 Monitoring the busy box The busy box window is shown below phs alidcscom075 mim RX memory pointer FPGAL 0x280 L1 Counter FPGAL 0x523a L2 Accept Counter FPGAL 0x523a L2 Reject Counter FPGAL 0x0 EventID FIFO count dec FPGAL 0 Current Request ID FPGAL Oxa Current EventID FPGAL 9892112b4 Most recent EventID FPGAL 9892112b4 Retry Counter dec FPGA1L 2 FSM Halt 1 true FPGAL 0 M1 0000 H2 0001 H5 0111 H4 1111 H5 1110 As events are coming in the hexadecimal numbers following the L1 Counter and L2 Accept Counter should increase The busybox is reset at the beginning of every run so it is normally not necessary to reset it manually To reset it manually one should log in to alidcsdcb1557 This is done by the command bb from alidcscom075 Then go to the directory mnt dcbrw busybox files and execut the following command reset phos bb sh The busy box settings are defined in the file nfs export dcbrw busy busybox files bbinit phos sh 14 Checking the FEE Servers using did If the did window is not running it can be started from alidcscom075 ssh phs alidcscom075 did Click View gt All Servers The window is shown below gt lt DID DIM Information Display 0X File View Commands Help E EE TEC KNEE 14 Servers known 8065 Services Available Displaying ALL Servers There should be 16 buttons in this window One DIS_DNS One PHS_TOR One PVSSSys91Man1 DIMHandler not in F
15. 5 2 25 3 35 4 45 5 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Module number Module number Number of hits jain Total Energy of raw hits in PHOS I E Gain Total Energy of raw hits in PHOS a E 2 T ais 70 E E 180E 600 10E so KIS z 2E edes E 100E 3r sof 20 CET p up 100 i zE E 3 Li 2 0 zu DU TEHETTTE TTE TTL ETTTT TTE ETT TTE ETTTRETITL I jm 10 0 500 1000 1500 20002500 3000 3500 4000 4500 5000 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 Number of hits Energy ADC counts Energy ADC counts 1H 4000 E 2 Mur 3500 F E 12 3000 F E 10F 2500 E a 2000 E 1500 E dE 1000 F bp sof 2 A att 1 1 1 L 200 400 600 1000 0 200 4X0 80 80 100 Energy ADC counts Energy ADC counts 10 How to solve some common problems If PHOS goes busy during a global run has a CDH error or has stopped a run because of an event size gt 2 MB If ECS DAQ calls and says that PHOS is busy has produced CDH errors or has an event size gt 2 MB the following procedure should be followed 1 If the phosgui is not running log on to alidcscom075 ssh phs alidcscom075 and start it See p 5 7 2 In the phosgui click connect gt connect now 3 For each module Click Reset then Click Go Ready 4 Tell DAQ ECS that PHOS is ready If PHOS continues to be busy check with DAQ that the right LDCs are selected Se
16. F1 wait and then press ctrl alt F7 Connecting to DCS 1 Open Xterm on aldaqacr49 type the command rdesktop alidcscom072 f login using NICE username and password If the authorization window is not opened automatically go to the start panel and click PHOS To leave full screen mode ctrl alt enter 2 The authorization WINDOWS login window will appear fig 1 Fig 1 e You should use the NICE login and password here as well 1 The following window will be opened the ALICE Main User Interface MUI of DCS system for PHOS project fig 2 This details of this window are described in App A amp PHs PWs amp dPHs FEE TOP amp SBPHS LED TOP amp SPHS COL TOP 4 PHOTON SPECTROMETER PHOS amp SBRPHS DCS RUN p Module 2 crate 02468 Trends Wee B B 8 Wien B HEBHH m ente 0 128 4 5 3 is B amanenna m Module 3 crate 02468 Trends Wiener195 E a 9 Temp Wiener mO B Goa w crate oO 23456 T be E BEREREEH recon cate 0 2 4 6 8 Trends Wiener195 B 5 18 Wienr190 B BB B w crate 8 1 4 W 6 T i mg MEEBRBSENE l VME cate B Configuration fi LED flash n Default Module2 Wb md Electonics 12 Module3 WH tac zee 2 3 B ww BoB Module 4 Wi m E FEETempPwS SEB 7 5 Il Humidty Hv Bl BI G Hw interlocks Run Type Matris 13 Mial Iad c
17. OPC connection Iseg module 1 PHOS module 2 Iseg module 2 PHOS module 4 Iseg module 3 PHOS module 3 m alidcscom074 E Matrix cooling plant B Matrix temperature sensors alidcscom074 E water cooling pressure PVSS project alive B mE CANBus B vMEcrate Refresh rate sec Default Set Close 36 Appendix D Association of RCUs with DDLs and LDCs Module LDC DDL RCU alidcsdcb15NN 1800 0 84 M3 00 01 2 1801 1 87 1802 2 86 M3 02 03 1803 B 85 1804 0 95 M4 00 01 3 1805 1 94 1806 2 93 M4 02 03 1807 3 92 1808 0 88 M5 00 01 A 1809 1 89 1810 2 90 M5 02 03 1811 3 91 Appendix E PHOS Computers at Point 2 aldaqacr39 DAQ control aldaqpc067 DAQ LDC aldaqpc065 DAQ GDC aldaqdqm16 DAQ monitoring to run DAQ DA alidcscom001 DCS gateway with external in out connection alidcscom075 DCS linux NFS server for alidcsdcbX XXX alidcsdcb1557 BB alidcsdcb1573 LED VME Appendix F Events sizes The event sizes per LDC for empty events with Zero Suppression threshold 3 should be M3 00 01 M3 02 03 M4 00 01 M4 02 03 M5 00 01 M5 02 03 2 3 2 4 2 0 1 1 1 2 1 2 kByte Deviations up to 1 0 kByte are OK For pedestal runs without Zero Suppression the event sizes should be M3 00 01 M3 02 03 M4 00 01 M4 02 03 M5 00 01 M5 02 03 330 330 330 245 245 318 kByte For LED runs the event sizes will vary with the LED settings Appendix
18. PHOS shift user manual Version 20 10 2010 The person who needs access to the shifts first of all should send a mail demanding the permission to work in a shift from one of the following coordinators Svein Lindal Run Coordinator tel 169425 svein lindal cern ch Alexander MAMONOV Alexander Mamonov cern ch Oeystein DJUVSLAND tel 161080 Oeystein Djuvsland cern ch Alexandre VINOGRADOV tel 165670 Alexander Vinogradov cern ch Iouri SIBIRIAK tel 165670 Iouri Sibiriak cern ch Joakim NYSTRAND Run Coordinator tel 160273 Joakim Nystrand cern ch PHOS at ACR tel 77687 To find out who is the PHOS On Call Shifter 1 go to the Shift Signup System SMS log in 2 click on Current Shift Crew in left panel 3 click on OnCall Shifters Table of Contents RETETA ERE ci ci vsccteescdvana radu sansvna cand eh a o a eer Er PR na RC e e e ERU da E FR RR suns pies RO S PR RD ERE a BR RN ats 3 gS TU esas bain Tm 8 lnstructions for PHOS On Call 25 22 2 eri reor e Rer bina ina eua wx Race o Rt Cw ton nr a a TR 9 How to solve some common problems esesseeeeeennene eene nennen nenne nnne nnn nane 11 Be Global TUN Seara e arenei en OE N Ea ETUA aaar EEEE ETEEN 16 4 Standalone runs Pedestal LED eeseenm emen menm ennene nenne nnn nn 16 5 Switching on off Power Supplies cold SEE iisiie sess dncsadssssachvscciseideshidseacenccsessbedehensearietane 19 APPENDIX A Description of the Main User Interfac
19. UI Photon Spectrometer PHOS c X START ALARM iu um S Eb PHS_DCS 6 amp 8BPHS_PWS o R H PHS_FEE_TOP T 8 PHS_LED_TOP amp 8RPHS COL TOP amp PHS DCS RUN 4 poss na o Ta PHOTON SPECTROMETER PHOS Module 2 ate 02468 Trends Wiener195 E Bl 8 Temp Weert Bl BEHHH EE crate ae 2 u 5 eo B BERBEHEEH l p Module 3 crate 02468 Trends Wiener195 E a 9 Wee BH Eeee EE crate Wy Y 2 93 495 87 s E HEHHB ENEENE prices wate 0 2 4 68 Trends Wiener195 m 10 Temp Wert BH BEBEHBH crate A12 X AS ee a eo mg MmEHEEHBEE VME crate B Configuration 1i LED flach Ni Delaut SW Interlocks Alarms Electonics 12 Modile3 Wi too uke 25506 Bl wry BEB Module4 Wi 2d Il FEETemp PWs Bu i B Humidity HV Baa E wiener Temp Pws M E B Water Cooling It Cooling BD eun I Cool Water PWS Il Crystal Cooling E LY Interlock L inim 24 5 Lies citi B Sofware interlocks BE Daavold mp Bl Cool Plant Hv Bl Dead PVSS proj 13 Module E Interlocks Run Type Mae Mial Mial iiti B D ly ac ESSE fE Wotage HianVonage FEE TT towvettage Highvotage FEE Jman e a CU ita tgs ERE a LED 16 O se Top left hand corner 1 User access window for users logins 2 FSM button Finite State Machine Top level o
20. an average cold volume temperature PHOS DCS summary It should be 24 26 C e Check an average warm volume temperature PHOS DCS summary It should be 10 25 C 39 ain Mpaska Bug MypHan B3aknagkn MnHcrpyMeHTB Cnpaska a Y c xX A e http alicedcs web cern ch AliceDCS monitoring main aspx ALICE DCS Monitoring up ALICE DCS Monitoring 7 BETA Mixed In Mixed Out S SALICE DCS ce E Alarms LHC amp Other systems amp More views Refresh 9 Autorefresh HMP SDD SSD SPD Press 0 85 bar Press 1 40 bar Press 2 20 bar Level 40 61 Level 139 81 Level 28 31 Temp 20 9 C Temp 16 8 C Temp 10 4 C TRD Pres 0 37 bar Press 0 31 bar Ley l 250 61 Level 276 61 emp 15 8 C Temp 18 4 C PC FMD Press 0 46 bar Level 169 91 Temp 12 7 C Fig 17 Checking of the temperature and pressure of the FEE water cooling ALICE contour phs panelsXphs checklist pnl phs top phs top C0 x 2010 04 19 13 16 59 980 PHOS checklist General nmm Hardware interlock Software interlock A Alarms Matrix cooling plant Cooling water temperature Tes 831 02 Cooling water pressure m Module 2 WIENER LV channels ISEG HV channels Cold volume temperature Warm volume temperature FEE temperature 2 a E o o WIENER LV channels ISEG HV channels Cold volume temperature Warm volume temperat
21. arms conception and recommendations for shifter s actions Alarm system works accordingly with a rule that for some representative variables like voltage current power temperature humidity etc there are 3 consecutive thresholds after which the messages are generated for shifter to attract his her attention that an error state is incoming Mentioned thresholds are ordered with increase of danger levels If the value of a variable exceeds the 1 threshold the message is classified as warning after exceeding of the 2 threshold alarm and at last at reaching of the 3 threshold danger An operator can see these messages with additional accompaniment of the description of needed actions The current list of alarms is as follows 3 1 Cold volume temperature alarm for each PHOS module e Warning 25 C lt t lt 30 C pay attention to the high temperature level inside the cold volume of PHOS module check the state of the PHOS matrix cooling plant and the water cooling system e Alarm 30 C lt t lt 35 C switch off the power of the alarmed PHOS module check the state of the PHOS matrix cooling plant and the water cooling system inform the PHOS Run Coordinator e Danger t gt 35 C immediately switch off the power of the alarmed PHOS module check the state of the PHOS matrix cooling plant and the water cooling system inform the PHOS Run Coordinator 32 3 2 Warm volume temperature for each PHOS modu
22. e MUI seeeennnm 26 APPENDIX B The DCS PadlOCES oct Lov em etr A tiiedt dum e epRD rS Mi vwPRiuV CHAUD I dd 30 APPENDIX C The PHOS interlocks and alarms eene 31 T HWelttberlocKs uo orit reef d tene ee d e Cb o oe bdo Cea e RR Ra ce Rr D RR ER RD 31 2 SWAMME OCK S s cdrctertindie e IM I DM Id EMI ICM U EIE IM EU ODE 31 3 Description of the PHOS alarms conception and recommendations for shifter s actions 32 3 1 Cold volume temperature alarm for each PHOS module eese 32 3 2 Warm volume temperature for each PHOS module eene 33 3 3 Humidity in the cold volume of each PHOS module eene 33 3 4 Humidity in the warm volume of each PHOS module eene 33 3 5 Dew point temperature for each PHOS module not implemented 33 3 6 LED VME Crate ose rene on ea pres enu iid i ed xe aX Eunice VERA ada eR Oro ved edie Dr neta Rd 33 3 7 Cooling water pressure Tor all PHOS modules opone prete neni n xke nyc a Gane por eases 34 3 8 Wiener LV Impesrabulles ciis issues vex sevo Rp hasxa rin orba cance Ro FRERY RAF EE uRaR ORE nED Xe c PPdRTa rRPraMAP MS 34 2 9 HV currents for each ISS cDanpel eei tertio oth epo e Ia ea ee ee ae reece anaoa Saidi 34 3 10 Wiener LV device doesn t respond not implemented eseeeeeeeeeees 34 3 11 Iseg HV channel doesn t
23. e below If the problems persist call the PHOS OnCall or one of the people listed on the first page of this manual Association of DDLs with LDCs To find which module a certain LDC DDL belongs to here is the mapping between LDCs DDLs and modules see also Appendix D Module 2 LDC M3 00 01 LDC M3 02 03 Module 3 LDC M4 00 01 LDC M4 02 03 Module 4 LDC M5 00 01 LDC M5 02 03 If all modules should be read out all these should be included If only one or two modules should be read out then only the corresponding DDLs LDCs should be selected DDLs 1800 1801 DDLs 1802 1803 DDLs 1804 1805 DDLs 1806 1807 DDLs 1808 1809 DDLs 1810 1811 If one or several HV Channels trips Only people who are registered as PHOS expert in PVSS can do this Others have to call the PHOS OnCall Open the FSM Control panel for the HV of the relevant module module 2 in this case To get it open PHS PWS gt PHS_PWS_MODULE 2 gt PHS PWS HV MODULE2 The panel is shown below FSM CONTROL PANEL System State 4 RR er a Sub System State PHS_H _MOD2_CHO OFF M x PTE L0 a CLOSE The top rectangle should be red if there was an error To ramp down the voltage click on the to rectangle and do reset_emerg This is a fast ramp down If one clicks reset the color might change to green If that happens click again and select go off 12 When the voltage is down the 13 V for that module sh
24. emperature sensors import in PHIS DCS GUI is in progress and 8 temperature sensors and 2 humidity sensors which also measure the temperatures Average warm volume temperature should be around 13 C However when FEEs are switched off temperature may reach 6 C When the temperature is around 6 C there is a danger of appearing water on FEE cards Average humidity should be around 596 There is ALICE water cooling cycle which pass through PHOS modules and cools electronics The same water passes through PHOS warm volume EmCal TOF and CPV The warm volume and cold volume are separated by isolating partition To minimize the humidity level nitrogen passes through the PHOS module volumes Independently from PHOS module volumes there are e Low Voltage power supplies WIENER crates cooling by water from the ALICE contour Average temperature of each crate channel should be around 20 C e High Voltages HV power supplies ISEG crates cooling by air fan Average current level of each ISEG channel should be around 8mA see Appendix F e LED monitoring system consists of VME crate and LED cards are situated in pit cooling by air fan e Matrix Cooling Plant It s not the same with ALICE water cooling contour 41 GLOSSARIUM MUI ALICE Main User Interface RM Click Right Mouse Button DRM Double Click Right Mouse Button LM Click Left Mouse Button DLM Double Click Left Mouse Button PWS Power Supply REFERENCIES
25. f 5 a VME crate is off or doesn t respond inform PHOS Run Coordinator Action Read the descrition above Contact details Name Joakim Nystrand Email Joakim Nystrand cem ch Phone Tel 73601 GSM 160273 Alarms Displayed 1 3 rien will see the window with instructions on what to do for this alarm as shown below 5 Data valid screen Data valid screen gives full information about status of the PHOS interlocks and alarms with control that different PVSS projects on machines 072 073 074 are alive and respond to the main DCS Each item is presented by a color square The color of correspondent square is green for normal situation otherwise if the system does not respond for time greater than 5 s the square becomes red To activate this screen push the virtual button Data Valid in the lower right part of the ALICE Main User Interface MUI you will see m alidcscom072 Cooling plant PWS software interlock Humidity H software interlock HV LV software interlock Water pressure PWS software interlock alidcscom072 PVSS project alive Matrix temperatureO0 PWS software alarm Matrix temperature35 PWS software interlock LV temperature PWS software interlock Data valid software alarm r alidcscom073 Wiener OPC connection alidcswie190 PHOS module 4 alidcswie191 PHOS module 3 alidcswie193 PHOS module 2 o alidcswie195 13V alidcscom073 PVSS project Iseg CANBus alive Iseg
26. f DCS control for controlling LV HV Power Supply PWS LED FEE Matrix Cooling Machine Run Control Unit in order to choose the type of run Press FSM button to begin the process of controlling 3 PHS DCS Info window describes the state of the system Left side 4 lt lt PHS_DCS gt gt the hierarchical tree of subsystems Bottom left hand corner 5 PHOS Monitoring Zone quick access to the info about the state of the systems 26 Top 6 Alarm current alarms information 7 Manual PHOS DCS Manual 2007 1 Right side 8 10 Indicators of PWS system state for 2 3 4 PHOS modules 11 Indicators of LED monitoring system state 12 Indicators of FEE electronics system state which is now in progress 13 Indicators of Matrix Cooling system state amp Temperatures and Humidity 14 Software Interlocks Software Interlocks status 15 Help general information about the status colours Bottom right hand corner 16 Close in order to close the Main User Interface To start MUI once more after closing Start PHOS Top center 17 PHS Go Safe Moving all the PHOS modules to safe mode turning off all HV channels Bottom 18 19 SW Software Interlocks and their Alarms 20 HW Hardware Interlocks 21 Run Type 22 FSM fig 5 Stop Start Restart of all FSM ONLY IN THE LAST RESORT 23 ALICE DCS monitoring zone is in progress 24 DCS
27. hoose the command CONFIGURE In the window that appears write LED in the space Value and click Send This will start the LED system In the Main GUI the square LED flash at 11 should change from blue to green and the run type will change to LED By default the LED configuration will be 2554 To use a different one open the LED panel by clicking on LED at 5 in the Main GUI Type the configuration at the top and select which modules to activate Then proceed as above to start the LED system After finishing the LED run you should click on the PHS DCS RUN button in the top level DCS control and select the command CONFIGURE Type PHYSICS or PEDESTAL and click Send The LED system will deactivated The square LED flash at 11 in the Main GUI should change from green to blue and the run type will change to what is selected REMEMBER TO SWITCH OFF THE LED SYSTEM BEFORE STARTING ANY OTHER TYPE OF RUN 17 Start data taking If the DAQ window PHOS_DCA is not open open it by clicking on the 6th icon from the left in the lower panel it s an Emacs icon and when the mouse hovers over it it should say DateHI if there is no lower panel do ctrl alt enter and it will appear Choose PHOS X PHOS_DCA Hle View Options Permissions PHOS Detector Control Agent HI running on aldaqacr48 with PID 26673 Waiting for operator commands 87605 RUN type PEDESTAL RUN number HLT mode A iy ux
28. ick select equipment and mark the desired DDLs and click Commit Login to alidcscom075 and go to nfs export dcbrw busy busybox files Check that the right RCUs are included commented out in the file bbinit phos sh Go back to the PHOS_DCA window Lock the padlock DAQ RC Unlock the HLT padlock The DCA frame should be green Click on it to start a Pedestal or LED run When the run has started a new window will appear PHOS The number of events is shown under the LDC status display number of subevents recorded To stop the run click on DCA and select stop datataking It is recommended to run about 100 events for Pedestals and 10 000 events for LED runs 19 To start the transfer of data to alien click on File in the PHOS DCA window and select Start migration of data to Castor To release DAQ control click on DCA and select Release Resources then unlock the main padlock in the PHOS_DCA window 5 Switching on off Power Supplies cold start Note The HV should never be ON when any LV channel is OFF Switching OFF power should be done in the following order 1 Ramp down the HV 2 Turn OFF the FEE cards from the phosgui 3 Turn OFF the LV all channels incl 13 V Switching ON power should be done in the following order note that this procedure normally takes 2 3 hours 1 Switch ON LV and program the RCUs For Module 2 i Switch ON the first 5 LV channels not the 13 V ii Program RCU 84 87
29. ig above One ztt_dimfed_server not in Fig above 4 buttons for each module PHS FEE_0_0 2 3 4 _ 0 1 2 3 The first number indicates the module If any of the PHS FEE_0_0 2 3 4 _ 0 1 2 3 buttons are missing it means that the corresponding FEE servers are not running To restart them go to the directory home phs bin on alidcscom075 and run the script all phos dcs m2 reboot sh to reboot the FEE servers for module 2 The m2 is replaced by m3 and m4 for modules 3 and 4 respectively The PVSSSys91Man1 DIMHandler and ztt dimfed server are only there if the intercom layer is running If the DIS DNS button is missing one should execute usr local dcs dim linux dns on alidcscom075 15 3 Global runs Before PHOS can particiapte in a global run the DCS and DAQ locks should be released from aldagacr48 and 49 The locks will be taken by the global DCS and DAQ shifters Don t change the configuration or do anything with the phosgui when a global run is ongoing Before PHOS is handed over to global control it should be checked that the detector is in good shape A standalone run should be taken and there should be no errors The event size for empty events should be consistent with Appendix F 4 Standalone runs Pedestal LED Before starting the control of the DCS and DAQ locks should be taken Ask the shiftleader to release the locks if necessary Make sure that all LV and HV channels are ON and that the phos_gui is r
30. le Warning 35 C x t 45 C pay attention to the high temperature level inside the warm volume of PHOS module check the state of the FEE temperature sensors PHOS matrix cooling plant and the water cooling system Alarm 45 C x t lt 50 C pay attention to the high temperature level inside the warm volume of PHOS module check the state of the FEE temperature sensors PHOS matrix cooling plant and the water cooling system inform the PHOS Run Coordinator Danger t 2 50 C switch off the power of alarmed PHOS module check the state of check the state of the FEE temperature sensors PHOS matrix cooling plant and the water cooling system inform the PHOS Run Coordinator 3 3 Humidity in the cold volume of each PHOS module Warning 7096 x h 8096 pay attention to the high humidity level inside the cold volume of the PHOS module Alarm 8096 x h 8596 pay attention to the high humidity level inside the cold volume of the PHOS module inform the PHOS Run Coordinator Danger h 85 pay attention to the high humidity level inside the cold volume of the PHOS module inform the PHOS Run Coordinator 3 4 Humidity in the warm volume of each PHOS module Warning 4096 h 5096 pay attention to the high humidity level inside the warm volume of the PHOS module Alarm 5096 lt h 60 pay attention to the high humidity level inside the warm volume of the PHOS module inform the PHOS Run Coordinator
31. n E Wiener Temp Pws M E E E Water Cooling LED Cooling E eej mo pee pm Bl Cool Water PWS B I Crystal Cooling MilPedestal 24 Il Cool Plant HV E LY Interlock Il Physics Water Cooling Temperature Bi vmm Pressure Prs z Il Dead PYSS proj B TB 055 Reaction W Other Summary Bos B Dos vali 24 19 25 15 ETT uus ings REET awn ah otoe REE 16 CLOSE Fig 2 ALICE Main User Interface MUI Configuring the electronics turning on off FEE cards To start the phosgui log in as user phs on alidcscom075 This is set up by ssh keys from aldagacr48 and 49 Just do gt ssh phs alidcscom075 No password has to be given At alidcscom075 go to the directory home phs phos dcs bin and start the gui cd phos dcs bin Startgui sh The following window should appear gt lt phos gui py mmy Connect Settings Module 0 Module 1 Module 2 Module 3 Module 4 PHOS Detector Front End Cards Branch B Front End Cards Branch A TRU A B Actions Q 9 R Update Status u EDCBA987654321 123456789ABCDE A B On off a RCU View R Update Status omm c u EDCBA987654321 123456789ABCDE A B On off z RCU View R Update Status c Module Properties u EDCBA987654321 123456789ABCDE Aj B On off Configure Electronics RCU View E Update Status Enable Trigger c u EDCBA987654321 123456789ABCDE Aj B On off Disable Trigger RCU View RDOMOD 0x40 1 o o ALTROCFG1 0xd003 Zero suppr 1 Auto BS 1 Offset 4 Threshold 3 ALTROCFG2
32. n mark in the top left part of the ALICE Main User Interface MUI button 6 you will see Alarm Screen Acknowledgement Mode kharlov amp e Acknowledya Unacknowledged f Current Alarms Print al amp M Individual Group Se s rint alarms al x xxx deed C HistoricalAlarms Select Time Range M Alarm Filters Systems Device Name Logical Name um Text Alarm State Eom Device Type Device Description e T Filters F w E F None available 7 available M e dcs ui SERVICES DCS GAS DCS GAS hasAlarms FSM Remote Alarm 008 08 19 08 5 des_ui SERVICES DCS_GAS DCS_GAS FSM Summary 008 08 19 08 5 des_globals L3BSF17 Temperature NO CONTROL 009 07 07 18 1 obals FieldMap FieldMapAvailable Field Map NOT AVAILABLE 2009 12417 12 01 009 12 17 12 0 009 12 17 12 0 PHOS VME create is off u 2009 1247 14 0 ALARME Px24 Level 3 Alarm 009 12 18 07 3 ALARME PX24 Level 3 Alarm LsE 2009 12 18 08 2 009 12 18 09 0 2009 12 18 09 0 009 12 21 12 5 E Device DP element Description farmtext or Value Ack Time phs colWiener CANB Crate1 General ee 2010 05 14 17 09 05 688 E WalidesfsonziCS Commondcs sharelphs sharethelplen US isoesse1tphs v x fu ch e File Edit View Favorites Tools Help Ue a P aliesFs002 0c5_Common des_share phs share hel TRE Ah Pac G tools Alarm Help VME create is of
33. nt Hardware Interlock Crystal Cooling Plant Hardware Interlock LV power crate Hardware Interlock DSS reaction on Hardware Interlock When an error occurs in any of these subsystems all LV crates are blocking switching off without the possibility to restart by the operator If any HW Interlock is in action the square changes colour zones 18 20 Only ALICE DCS operators can unblock HW Interlocks 2 SW Interlocks LV HV Interlock If any PHOS module has HV without LV interlock switches off the HV in emergency mode 50 V sec after 30 seconds delay FEE Temp PWS Interlock If the temperature of any warm volume of the PHOS module is higher than 55 degrees Celsius the interlock stops the HV of this module If the temperature is equal to Dew Point Temperature the interlock stops the HV of this module Humidity HV Interlock 31 If the humidity in warm volume of the PHOS module is above 50 interlock stops all HV 0 5 V sec for this module Water Pressure PWS Interlock If water pressure of FEE water cooling is more than 1000 mbar the interlock stops all HV 0 5 V sec and then LV for all PHOS modules Cooling Plant HV Interlock If the Matrix Cooling Plant is in state of an error or does not respond for 15 minutes the interlock stops all HV 0 5 V sec after 15 minutes delay If any SW Interlock is in action the appropriate square changes its colour zones 18 20 3 Description of the PHOS al
34. ould be switched off and on again Open the PHS PWS LV MODULE N to do that The 13 V channel is labeled PHS_PWS_WIE195_CH0 CH4 CH2 for Module 2 3 4 respectively When the 13 V has been turned on again the APD settings should be loaded How to do this is explained under 6 in the procedure for a Power Cycle p 23 Before ramping up the ramping settings may have to be modified Go to PHOS Monitoring zone 5 in Fig 2 and click on High Voltage for the appropriate module Click on settings If the ramp is not set to 0 1 V s change it Type 0 5 in the square Ramp and hit return Then Click set Check that the readback value is changed to 0 1 V s yes 0 1 V s not 0 5 The voltages should be 395 V for Modules 2 and 3 and 350 V for Module 4 These are the default values and should not have to be changed Then go back to the PHS PWS HV MODULE N and click on the top rectangle and select Go Ready The ramping takes about 30 mins If channels trip repedetly the HV should be turned off and an expert called If one or more LV channels trip This is unusual If it happens an interlock should turn off the HV If the HV is not turned off turn it off manually Then follow the procedure for cold start below If an interlock is activated Call an expert Try to understand what caused the interlock to be activated If it is not understood don t do anything To reset the interlock click on Software interlocks in the MUI 1
35. s click Left Mouse LM button and all PHOS will be in safe mode which means HV will be switched off Cooling LV LED FEE will not change their status Instructions for PHOS On Call The PHOS On Call should be reachable by phone 24 h per day He she should be able to reach Point 2 within 30 min after a call People who are On Call should be registered as phos experts in PVSS This is necessary for being able to turn on and off the HV and LV Here are some points to follow 1 Be aware of what is going on at Point 2 and what the plans are for PHOS Follow the e mails on the alice p2info mailing list stay in contact with the PHOS Run Coordinator and the ALICE shift leader etc 2 Make sure that PHOS is ready to take part in global runs when it should 3 Monitor the quality of the data Use the logbook to check the PHOS event size It can be found by clicking on a run in the logbook and then clicking on Run Statistics The event size in pp collisions should be between 8 5 and 12 5 kByte per event Deviations from this indicate problems Either noise too large event size or that some part of PHOS are not read out too small event size One can see the amount of data recorded by each LDC by clicking on LDC statistics Also check the DQM plots in the logbook These can be found by first clicking on a run and then clicking DQM An example plot is shown below There should be entries for all 3 modules 2 4 in the first two
36. summary panel see App H fig 16 25 Data Valid panel give the information about interlocks and alarms 27 You should wait 1 min before information will arise 26 PHOS modules general status 27 Message sender to other detectors 28 LHC Beam general status FSMControl l 2 x ALICE MAIN FSM Control Panel v 0 6 Auth A Franco PHOS 4 Mamonov e DIM DNS Server EXE DIM DNS name pcwniief dcs FSM Archiving FSM Synoptics r i Control E sentes an StartRestart AlI All Sopal e Sopal e f m ETE Fig 4 PHOS FSMs Control Window it appears after clicking LM on 22 FSM Other buttons are not ready yet For more details click on 7 PHOS Detector Control System Manual 2007 1 The status colours Dark blue system is not ready switched off or is in standby state HV LV is off Yellow system is in the intermediate state ramping cooling etc Orange no connection with the device Green system is ready to work HV LV is on Red an error or an incorrect operation of the device or system of devices 15 Help displays general information about status colours Getting info gt T LV HV currents over time zone 8 10 Trends Temp LV HV or zone 5 Matrix Cooling Water Cooling Pressure zone 13 or zone 5 gt LED zone 11 or zone 5 Devices status zone 4 LM button then RM button View 28 How to start the MUI manually Click Start PHOS
37. switch off the power in the emergency mode of the PHOS module where the alarmed LV Wiener channel presents inform the PHOS Run Coordinator 3 9 HV currents for each Iseg channel e Warning 10 x I lt 12 mA pay attention to the high level of the HV channel current of the Iseg HV power supply e Alarm 12 lt I lt 14 mA be ready to get an error state because of the HV channel over current inform the PHOS Run Coordinator e Danger h 2 14 mA switch off the alarmed HV channel inform the PHOS Run Coordinator 3 10 Wiener LV device doesn t respond not implemented e Warning Wiener PL512 LV crate doesn t respond for 3 minutes pay attention to the Wiener LV crate connection problem e Alarm Wiener PL512 LV crate doesn t respond for 5 minutes inform the PHOS Run Coordinator 3 11 Iseg HV channel doesn t respond not implemented e Warning Iseg HV device doesn t respond for 10 minutes keep the LV power for the alarmed PHOS module pay attention on Iseg HV device connection problem e Alarm Iseg HV device doesn t respond for 20 minutes keep the LV power for the alarmed PHOS module inform the PHOS Run Coordinator 4 Alarm screen Alarm screen reflects full information about alarms in the ALICE setup This screen should 34 be always presented PHOS shifter selects the messages with prefix PHOS all others ones are used for general information To activate this screen click on the red triangle banner with exclamatio
38. time e Click connect gt connection settings 23 e Select the DDLs for one module e Click connect gt connect now e Click reset e To turn on the cards in one RCU click ON in the phosgui but check below for execptions for RCU2 in Module 3 and RCUs 0 and 3 in Module 4 Repeat the steps above for all 3 modules If the phosgui crashes it can be restarted and the FFEs RCUs that were turned ON will remain ON To check which RCU FEE that are ON use Update Status and continue to turn on the RCUs Note Some of the RCUs and FEE cards in Module 3 and 4 require special attention For Module 3 RCU 2 turn ON the FEE cards in Branch A by hand i e click on each card one at the time The cards should turn green Don t do anything with the cards in Branch B For Module 4 RCUO turn ON the FEE cards in Branch A by hand i e click on each card one at the time The cards should turn green Don t do anything with the cards in Branch B For Module 4 RCU3 turn ON all FEE cards except card 7 and card A in Branch A by hand 5 To turn ON the 13 V go back to the LV window on alidcscom072 Enable channel WIE195 CHO for Module 2 and click GO READY For Module 3 and 4 the corresponding channels are WIE195_CH4 and WIE195 CH2 respectively 6 To load APD settings go back to the phosgui and select one module Then click Configure Electronics In the new window Select APD settings The default is 311 for all modules gain
39. unning If it is not running log on to alidcscom075 and start it ssh phs alidcscom075 cd phos_dcs bin Startgui sh Connect to the RCU FEE cards by clicking Connect gt Connection Settings and select the RCUs to be read out Then click Connect gt Connect Now Check that all FEE cards are ON If they are not ON check next section Cold start on how to turn them ON Select the number of pre samples samples Zero suppression enable disable Sparse read out enable disable according to the type of run This is done by clicking on Configure Electronics in the phos_gui In the Configure Electronics window e Select number of pre samples and samples Zero suppression enable disable Sparse readout enable disable threshold and offset if applicable o For pedestal run select zero suppression OFF and sparse read out OFF Select 11 presamples and 51 samples Do not set the threshold to 0 o For LED run select zero suppression ON threshold 3 offset 0 and sparse readout ON Select 11 presamples and 51 samples 16 e Click Save and then Cancel e For each module click Go Ready The configuration is done when information stops flowing in the alidcscom075 window PHOS is now ready to take data To take a pedestal run proceed to start data taking For a LED run the LED system should be started now This is done in the following way In top level DCS control click the button PHS DCS RUN the lowest one and c
40. ure FEE temperature o a c T B 24 84 Tie WIENER LY channels ISEG HV channels Cold volume temperature Warm volume temperature FEE temperature Fig 16 PHOS DCS summary PHOS Check list 40 Appendix I Some information about PHOS construction PHOS consists of two parts cold volume and warm volume that separated from each other by some isolated structure The cold volume for each module contains 64x56 crystals with preamplifiers CSPs Avalanche Photo Diodes APDs and Light Emitting Diodes LEDs for monitoring The crystals and APDs show best production parameters by temperature 25 C that is supported by Cooling Plant that operates cooling liquid temperature and humidity In the cold volume for each module there are 24 temperature sensors and 3 and humidity sensors which also show the temperature Average level of cold volume temperature should be around 25 C average level of humidity should be about 40 The warm volume for each module contains 28x4 Front End Cards FEEs electronic cards for 32 channels each in copper boxes In phos gui see below these cards are marked as 1 9 A E and connected with 4 Readout Control Units RCUO RCU3 and with 8 Trigger Readout Units TRU All electronics are cooling by water from the ALICE contour under the negative pressure Water temperature data is not included in PHOS DCS GUI yet but available from web form see below There are FEE s own t
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