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    User name Abdurahim

    Log entry time 23:57:14 on November 8,2010

    Entry number 339209

    keyword=Shift Summary

    Swing Shift Summary

    Swing Shift Summary: 16:00 - 24:00 Nov. 8, 2010


    Shift Crew




    SL: Abdurahim Rakhman

    TO: Min Huang

    Replay: Pengjia Zhu



    Shift Summary




    16:00 Shift starts with trigger efficiency test run 8489 with 3 uA beam on 15 cm LD2 target, DAQ configuration LeftHrs.

    16:50 Asked for an escorted access to fix the DVCS DAQ problem. Stopped data taking.

    16:55 Alex went to the Hall.

    17:40 Alex came out from the Hall. He swapped board 0x7 with the spare one. DAQ problem seems to be fixed. We asked for a beam permit with 3 uA beam.

    17:50 Beam is back. Resumed production data taking with DAQ configuration TrigDVCSBuff.

    21:00 Tried to take Compton runs. But the background rates were very high (10kHz/uA). Decided to give up on Compton.

    24:00 Shift ended with production run 8502 being taken. It was a very smooth shift.


    Run Summary




    Kinematics 2: Low energy

    PHRSL = 1.864 GeV/c

    &thetaHRSL = 26.55o

    &thetaCAL = 14.78o

    CAL dist. = 1.1 m
































































































































    Run # Type Target Current (uA) Event # (k) Comment
    8489 Test 15 cm LD2 3 3140 Trigger efficiency Test, Config: LeftHrs, T3 & T4 only
    8490 Test 15 cm LD2 3 259 Trigger efficiency Test, Config: LeftHrs, T3 & T4 only
    8491 Junk 15 cm LD2 0 0 Config: LeftHrs, T3 & T4 only
    8492 Junk 15 cm LD2 0 0 Config: LeftHrs, T3 & T4 only
    8493 Junk 15 cm LD2 0 0 Config: LeftHrs, T3 & T4 only
    8494 Junk 15 cm LD2 0 0 Config: LeftHrs, T3 & T4 only
    8495 Pedestal 15 cm LD2 0 20 Pedestal, Config: TrigDVCSBuff, T5 only
    8496 Production 15 cm LD2 3 959 Kin2, Config: TrigDVCSBuff, T5 only
    8497 Production 15 cm LD2 3 986 Kin2, Config: TrigDVCSBuff, T5 only
    8498 Production 15 cm LD2 3 875 Kin2, Config: TrigDVCSBuff, T5 only
    8499 Production 15 cm LD2 3 941 Kin2, Config: TrigDVCSBuff, T5 only
    8500 Production 15 cm LD2 3 879 Kin2, Config: TrigDVCSBuff, T5 only
    8501 Production 15 cm LD2 3 931 Kin2, Config: TrigDVCSBuff, T5 only