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    User name A. Tobias

    Log entry time 08:03:33 on May11,2009

    Entry number 272514

    keyword=Owl Shift Summary 11may2009

    OWL SHIFT SUMMARY 11 MAY 2009

    00:00 Beam still down due to East ARC Power Failure.
    00:02 Bob moves target to EMPTY position for safety. The "Auto Flip Set" is now OFF. MCC says estimate on beam is 2+ hours.
    05:40 MCC will bring beam back into the hall.
    05:57 Beam is back.
    06:00 Start "long" version of beam recovery procedure, including HARP scan.
    06:30 BPMA X=180,Y=105 BPMB X=120,Y=120.
    07:00 The T3 rate is constant (1000Hz) at 2x2 and 6x6 rasters on 3He target.
    07:05 After requesting 4x4mm raster (7x5mcc) on 3He target with 5.5microamp beam, many HV channels on Neutron Arm trip. We reset these. Also, the RHRS VDCs tripped. We did not ask for access to Hall to reset these, instead we run production with LHRS-only as per Yi's instruction. Also, Miha turned on the scintillators for the BigBite trigger. These trips were probably due to beam not on correct BPM X&Y positions at immediate beam redelivery. Slowly beam returns to Y=+2.0mm.
    07:24 LHRS-only production run 2105.