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    User name A. Camsonne

    Log entry time 12:45:59 on April 22, 2006

    Entry number 171542

    keyword=Shift summary

    Running smoothly
    efficiencies of run 4123 and 4127 checked and showed no particular problems.
    Replay looked good too. Though HV on bar 28 could be increased a bit.
    Some low values of polarization for the compton polarimeter because of half wave plate change during the run.
    Bodgan mentionned to me that I took the detector geometry for the cosmics calibration while for protons we have smaller thickness.
    So the previous values are mostly divided by 2 which gives good thresholds :
    Detector
    		 Width
    in cm
    		 Height
    		 E Loss in MeV
    protons
    		 ADC proton MIP
    peak
    		 ADC calibration
    100 channels
    in MeV
    		 Threshold in mV
    		 Threshold in ADC
    		 Threshold in MeV
    Veto
    		 2
    		3.7
    		 300
    		 1.23
    		15
    		 150
    		 1.85
    CMU
    		 5
    		9.25
    		 400
    		 2.31
    		 20
    		 150
    		 3.5
    UVA
    		 10
    		18.5
    		 1000
    		 1.85
    		 20
    		 150
    		 2.8
    Gla
    		 10
    		18.5
    		 374
    		 4.94
    		 20
    		 150
    		 7.5

    Threshold ADC
    		 Threshold mV
    		 Threshold MeV
    600
    		 180
    		 20 MeV
    1600
    		 320
    		 40 MeV
    2000
    		 500
    		 68 MeV


    still looking at getting the calibration by bar. Still trying to work on higher statistics but programs crashes at 330 k Events, maybe a memory leak I will continue to look into that. In the mean time run 4119-4123 were lunched for full replay so that I can get the calibration for the latest HV set.