1. E. GaruttiCALICE collaboration meeting, Prague 20071 CERN Test beam (part II) Erika Garutti, Fabrizio Salvatore

2. E. GaruttiCALICE collaboration meeting, Prague 2007 2 Beam instrumentation description 500 m beam 3x3 10x10  trigger * all in mm News on the beamline 1) beam info from CERN database available from run 330411 2) Cherenkov operated for e/  and  /p separation 3) 3 x/y pairs of MWPC with double readout 4) amplitude r/o of 1cm thick scint. counter (20x20 inner_veto) + outer_veto with 20x20 cm hole to tag double particle 5) 10x10 cm trigger only (no 3x3) 6) hodoscope installed for initial muon runs and from ECAL chip irradiation to end hodoscope

3. E. GaruttiCALICE collaboration meeting, Prague 2007 3 the veto counter 10 GeV e- run for analysis use analog readout in crate / slot / fe / chip / chan : 172 / 12 / 4 / 0 / 17 possible cut veto < 7000 ADC ch 20x20 cm 2 veto counter amplitude readout available only from run 330924 on

4. E. GaruttiCALICE collaboration meeting, Prague 2007 4 the outer veto rate : 10x10 trigger 1500 pps OR of outer counter AND 10x10 50 pps in binary files: bit 5 & 6 = 10x10 trig coincidence bit (1 or 2 or 3 or 4)&(5&6) = veto in LCIO files: ifVetoXY(), X=D, U (Down, Up) Y=L, R (Left, Right)

5. E. GaruttiCALICE collaboration meeting, Prague 2007 5 Clean-up examples events cut by no-outer-veto OR events cut by inner-veto Ampl<7000 ADC ch. maybe interesting event selected (?!) with outer-veto

6. E. GaruttiCALICE collaboration meeting, Prague 2007 6 the Cherenkov counter Cherenkov bit available from run 330250 on as bit 13 in binary files isCherenkovTrigger() == 1 (0) for electrons (pions) in LCIO files normally used for e tagging at E < 30 GeV from run 331269 to 331463 the Cherenkov gas was changed from He to N 2  achieved p/pi separation !!! for these runs isCherenkovTrigger() == 1 (0) for pions (protons) in LCIO files beam H6B 11 m long gas vessel PMT H6A

7. E. GaruttiCALICE collaboration meeting, Prague 2007 7 He beam E [GeV] Pressure [bar] beam E [GeV] Pressure [bar] 10 20 3010 50 100 min. pressure N2N2 Pion/Proton separation pion threshold proton threshold ECAL HCAL Cherenkov ON = pions Cherenkov OFF = protons 1 mip-like particle

8. E. GaruttiCALICE collaboration meeting, Prague 2007 8 MWPC alignment MWPCTDC# TDC channel# 1-left00 1-right01 1-down02 1-up03 2-left04 2-right05 2-down10 2-up11 3-left12 3-right13 3-down14 3-up15 * all units in mm alignment performed by CERN survey group cable mapping

9. E. GaruttiCALICE collaboration meeting, Prague 2007 9 MWPC performance this year much better collimated beam also at low energy 6-10 GeV still broad distribution beam impact point tuned by shift crew  differences ~ 1cm from run to run

10. E. GaruttiCALICE collaboration meeting, Prague 2007 10 the hodoscope correlation hodoscope_X / MWPC_X and hodoscope_Y / MWPC_Y provide 1 additional x-y point between last MWPC and ECAL from 14 th August readout from the DAQ

11. E. GaruttiCALICE collaboration meeting, Prague 2007 11 Detector performance Total data taking time 7 weeks SPS uptime 80.7 % Beam controlled by H6B 76.1 % (94.4 % of uptime) DAQ on beamData 60.2% (79.1 % of beam in H6B) DAQ on calibration 7.8 %

12. E. GaruttiCALICE collaboration meeting, Prague 2007 12 ECAL plots made on shift with online analysis tool (thanks Allister) NO corrections applied e-e+ chip test

13. E. GaruttiCALICE collaboration meeting, Prague 2007 13 ECAL noise pedestal fluctuation during one run (slot 19, run 330774) 80GeV hadrons at ECAL (0,+3) The hadron passes the ECAL (almost) undetected and generates showers in the HCAL A gap effect? known effects of noisy layers and pedestal fluctuations also this year

14. E. GaruttiCALICE collaboration meeting, Prague 2007 14 ECAL chip irradiation 5 position scan for each of the 4 chips on the special ECAL slab -90 GeV electron beam used ~1.2 M events per chip from Roman analysis

15. E. GaruttiCALICE collaboration meeting, Prague 2007 15 AHCAL plots made on shift with online analysis tool NO corrections applied  -  + 10 o 20 o runs < 330231 marked as odd HCAL longitudinal profile

16. E. GaruttiCALICE collaboration meeting, Prague 2007 16 runs < 330231 high energy points will determine the constant term

17. E. GaruttiCALICE collaboration meeting, Prague 2007 17 muon calibration 20 deg 10 deg 0 deg muon in HCAL noise stable @ ~ 5 mip

18. E. GaruttiCALICE collaboration meeting, Prague 2007 18 current and temperature jump of 300 uA ?! slow increase of 10 uA large temperature variations: ~ 0.5 K day-night > 4 K over 3 weeks  to be accounted in SiPM calibration

19. E. GaruttiCALICE collaboration meeting, Prague 2007 19 HCAL current map at 10 V bias all currents should be = 0 uA  possible cause: single SiPM (out of 108 connected) with short circuited

20. E. GaruttiCALICE collaboration meeting, Prague 2007 20 TCMT 180 GeV pion strong HCAL-TCMT correlation TCTM always operational LED system was off after stage rotation

21. E. GaruttiCALICE collaboration meeting, Prague 2007 21 DAQ performance 90 Hz limit of DAQ in spill 120 Hz limit of DAQ out of spill limited by beam rate