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    User name Wolfgang

    Log entry time 16:01:01 on January22,2009

    Entry number 257324

    keyword=Day Shift Summary

    Shift leader: W. Korsch
    TO : M. Canan
    Shift worker: S. Golge

    08:00: BB polarity switch in progress, also LHRS dipole is ramped down. Jin went to Hall to leak check reference cell system.
    08:25: BB polarity switch finished. Current read back: 99.448 A.
    08:40: BB magnet current back to 706.5 A
    09:02: LHRS dipole being ramped up.
    09:18: Everybody out of hall. Reference cell leak couldn't be fixed in the given time.
    09:30: BeO target in, 2 muA on target.
    09:40: Don't record any CODA events. DT =100%, no events recorded.
    trigger rates look fine. Expert looking into it. Restarting CODA fixed the problem.
    09:50: Spot++ ok with BeO.
    09:54: 3He target in, requested 2 muA cw.
    09:58: Test run 5444, beam size 3.5 mm x 3 mm
    10:02: Test run 5445, beam size 6 mm x 6.5 mm
    10:11: Run 5446 started, 14 muA on polarized 3He target.
    10:17: Spot++: 2.8 mm x 2.5 mm (at target)
    10:40: BB HV trip (all chambers), beam positions off (BPMA Y: 3.8 mm,
    BPMB Y: 3.4 mm). Problem was caused by ARC magnet 4 problem.
    10:51: Started run 5447.
    11:03: Another BB HV trip (chambers 2 and 3). Stopped run.
    11:10: Run 5448 started.
    12:24: Run 5449 started.
    13:45: Start run 5450
    13:58: CODA windows mistakenly closed, restart CODA
    14:02: Run 5451 started.
    14:25: BB HV trip, run stopped.
    14:28: Run 5452.
    15:03: Yet another BB HV trip......
    15:10: Run 5453
    15:13: HV trip (MCC: still ARC magnet problem)
    15:18: Run 5454
    15:39: HV trip
    15:43: Run 5455
    15:45: Stopped run, MCC calls -> Optics problems (problems getting beam through ARC)

    Good runs:
    5448
    5449
    5450 (short)