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LHCb CALO commissioning meeting 7.07.08 Anatoli Konoplyannikov /ITEP/

XCAL commissioning with LED. News New LED scan and stability data for ECAL and HCAL were collected. First recipes for ECAL-C LED monitoring was created. During the LAST GC week the PHYSICS|COSMICS recipes for FE boards of ECAL and HCAL have been created together with Frederic .

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LHCb CALO commissioning meeting 7.07.08 Anatoli Konoplyannikov /ITEP/

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  1. XCAL commissioning with LED • News • New LED scan and stability data for ECAL and HCAL were collected. • First recipes for ECAL-C LED monitoring was created. • During the LAST GC week the PHYSICS|COSMICS recipes for FE boards of ECAL and HCAL have been created together with Frederic. • HCAL CW behavior with different LV values. • ECAL HV system study: • Two run (12 hours each) of the CW LV monitoring have been done (2 and 4 of July). • One of 32 HV board has a wrong behavior and will be repaired. • Modification of the HV boards of side A has been started. • Planning • XCAL LED monitoring recipe creation and detectors stability tests LHCb CALO commissioning meeting 7.07.08 Anatoli Konoplyannikov /ITEP/

  2. XCAL commissioning with LED Description of the collected data Aim is to improve the procedure of the LEDTSB recipe creation and XCAL middle term stability study. ECAL - A+C: Run coord: Marei-Noëlle/Anatoli ECAL data (1600 ev/step, each PMT flashing by 1/8 trigger freq, steps=13, tot_ev= 20800, Calibration trigger rate = 56 Hz):1. /castor/cern.ch/grid/lhcb/data/2008/RAW/ECAL/PHYSICS_TimeScan/26292 ... scan   HV = nominal, LEDTSB_del_C=150 ns;  LEDTSB_del_A=recipe_ecA_TSBrecipe_24893; LED_intens=nominal cnt;  FErecipe-Default. 2. /castor/cern.ch/grid/lhcb/data/2008/RAW/ECAL/PHYSICS_TimeScan/26299 ...scan   HV = nominal,  LEDTSB_del_C=ecC_TSBrecipe_23700;  LEDTSB_del_A=recipe_ecA_TSBrecipe_24893;LED_intens=nominal cnt;  FErecipe-Default. 3. /castor/cern.ch/grid/lhcb/data/2008/RAW/ECAL/PHYSICS_TimeScan/26308 ... no scan 10000events   HV = nominal,  LEDTSB_del_C=ecC_TSBrecipe_23700;   LEDTSB_del_A=recipe_ecA_TSBrecipe_24893; LED_intens=nominal cnt;  FErecipe-Default. 4. /castor/cern.ch/grid/lhcb/data/2008/RAW/ECAL/PHYSICS_TimeScan/26340 ... no scan   96000 events    HV = nominal,  LEDTSB_del_C=ecC_TSBrecipe_23700; LEDTSB_del_A=recipe_ecA_TSBrecipe_24893; LED_intens=nominal cnt;  FErecipe-Default. 10 min pause + 1600 event collect, time Points=60.   Started at 18:1 0 of 4.07.08, stopped at 4:33 of 5.07.08. The run includes two raw files.         The LV monitoring started at18:00  and stopped 6:13. HCAL - A+C: HCAL  data (1600 ev/step, each PMT flashing by 1/8 trigger freq, steps=13, tot_ev= 20800, Calibration trigger rate = 56 Hz):1. /castor/cern.ch/grid/lhcb/data/2008/RAW/ HCAL/PHYSICS_TimeScan/ 26361  ... scan   HV = nominal, LEDTSB_del_C=150 ns;  LEDTSB_del_A= 150 ns ; LED_intens=nominal cnt;  FErecipe-Default. 2 . /castor/cern.ch/grid/lhcb/data/2008/RAW/ HCAL/PHYSICS_TimeScan/ 26362  ... scan   HV = nominal, LEDTSB_del_C=150 ns;  LEDTSB_del_A= 150 ns ; LED_intens= 0.95 * nominal cnt;  FErecipe-Default. LHCb CALO commissioning meeting 7.07.08 Anatoli Konoplyannikov /ITEP/

  3. XCAL commissioning with LED HCAL HV system study. HV dependence of ΔU±6v worse case < 0.2 V, worse case < 0.5 V, worse case < 0.7 V, Output HV dependences for three HCAL CW bases versus LV power variation for three control voltages is shown on table. LHCb CALO commissioning meeting 7.07.08 Anatoli Konoplyannikov /ITEP/

  4. Test conditions: • Each minute LV voltages of all HV boards are measured • 720 points were measured ( 12 hours in total) XCAL commissioning with LED Time (hour) - 6 V power lines + 6 V power lines LV stability of ECAL HV board_4. All eight negative power have the same behavior. (Problem with -6V regulator or with inverting OA). Board has to be repaired. LHCb CALO commissioning meeting 7.07.08 Anatoli Konoplyannikov /ITEP/

  5. XCAL commissioning with LED DCU ADC (cnt) - 5.7 V < 0.3 V Time (hour) LV stability of ECAL HV board_4. One – 6 V channel in detail. LHCb CALO commissioning meeting 7.07.08 Anatoli Konoplyannikov /ITEP/

  6. XCAL commissioning with LED Wrong message [00:20:33] PBUSWrite <0000> [00:20:33] DCUChannelRead <Channel = 2 , Data = 0:20:23] DCUChannelRead <Channel = 1 , Data = 1501, Converted Data = 1.6544> [00:20:23] Command Register <Read> <ECAL_HVboard4.mLED13.rPWR> [00:20:23] PBUS MUX write 0000 at addr d4, then read DCU channel 1 [00:20:23] PBUSWrite <0000> [00:20:24] DCUChannelRead <Channel = 1 , Data = 1503, Converted Data = 1.6532> [00:20:24] Command Register <Read> <ECAL_HVboard4.mLED14.rPWR> [00:20:24] PBUS MUX write 0000 at addr d5, then read DCU channel 1 DCU ADC (cnt) DCU ADC log file of 4.07.2008 Normal message SpecsServer_2008-7-4 log file Time (hour) Typical Specs DCU error. During 12 hours few tens errors appear for both side of ECAL. For a first LV stability run for ECAL-C (2.07.08) there were no any Specs errors. LHCb CALO commissioning meeting 7.07.08 Anatoli Konoplyannikov /ITEP/

  7. XCAL commissioning with LED DCU ADC log file of 2.07.2008 At this time about 5 AM the HV was switched off by Xavier and LV DCU ADC was changed on 7 counts. Time (hour) For a first LV stability run for ECAL-C (2.07.08) there were no any Specs errors. LHCb CALO commissioning meeting 7.07.08 Anatoli Konoplyannikov /ITEP/

  8. First look on the data XCAL commissioning with LED sample T0 sample Next1 ECAL LED response. First recipe of the LEDTSB delay settings has now about 7% of miss calibrated delay channels and will be improved. LHCb CALO commissioning meeting 7.07.08 Anatoli Konoplyannikov /ITEP/

  9. XCAL commissioning with LED First look on the data 8 PMT stability curves illuminated by one LED Normalized amplitude Normalized amplitude hour LEDTSB address 130110 Typical ECAL-C PMT stability is similar stability of A side Each point corresponds of the mean value of PM amplitude for 200 events hour LEDTSB address 130136 LHCb CALO commissioning meeting 7.07.08 Anatoli Konoplyannikov /ITEP/

  10. XCAL commissioning with LED • Conclusion • PHYSICS|COSMICS recipe was created for all XCAL FE electronics. • New LED scan and stability test data have been collected. • First HCAL/ECAL recipes for LEDTSB delay and FE-PIN ADC delay chips were created. In the same time development of the automated procedure of the recipes creation for the LED monitoring system will be continued. • New stability tests for HCAL and ECAL are planning with more realistic PMT anode current load. LHCb CALO commissioning meeting 7.07.08 Anatoli Konoplyannikov /ITEP/

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