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    User name V. Sulkosky

    Log entry time 23:57:57 on June15,2010

    Entry number 326838

    keyword=Swing Shift Summary

    June 15, 2010
    SL: Vincent Sulkosky
    TO: Navaphon Muangma
    3rd: Nicholas Lubinsky


    Swing Shift Summary:
    ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    Plan: Run production at 50 uA on PB/diamond # 1.
    16:00 Begin shift with slow beam current ramp up to 50 uA.
    16:39 Ask for MCC to ramp from 45 uA up to 50 uA.
    16:41 Beamline HV tripped. Power cycled frame 2.
    16:46 Vacuum exceeded 10e-4 briefly tripping the beam.
    16:55 Ask MCC to ramp us back to 50 uA slowly.
    17:05 Noticed that BPM12 was about 143,000 and GUI says it should be less than 132,000.
    Asked MCC to make sure Gain was in Manual mode.
    17:18 MCC wants to send tune beam to diagnose multiple beam trips.
    17:24 MCC sending 50 uA again.
    17:28 BPM12 now fine after asking MCC to do a gain search.
    18:18 Vacuum exceeded 10e-4 briefly tripping the beam.
    18:45 Beamline HV tripped. Power cycled frame 2.
    19:07 Vacuum exceeded 10e-4 briefly tripping the beam.
    20:54 Vacuum exceeded 10e-4 briefly tripping the beam.
    21:17 Vacuum exceeded 10e-4 briefly tripping the beam.
    21:28 Vaccum is less stable 5x10e-5, asked MCC to drop current to 40 uA.
    21:37 Vaccum has stabilized going up to 45 uA.
    21:42 Going up to 50 uA.
    23:20 Beamline HV communication issue. GUI does not respond to cycling on/off button.

    Parity Run Summary:
















     PREX Run #   Beam Current   # of Good Multiplets   Cummulative # of Good Multiplets   Charge (mC)*   Cummulative Charge (mC)*   Comments   IHWP 
    4577 0-40 uA N/A 363.0 k N/A 630.7 Beam Ramp Up OUT
    4578 40-50 uA N/A 363.0 k N/A 630.7 Beam Ramp Up to 50 uA OUT
    4579 50 uA 58.0 k 421.0 k 96.1 726.8 BPM12 High at start, Production OUT
    4580 50 uA 75.9 k 496.9 k 125.5 852.3 Production OUT
    4581 50 uA 63.5 k 560.4 k 105.4 957.7 Production OUT
    4582 50 uA 81.8 k 642.2 k 137.8 1095.5 Production OUT
    4583 50 uA 68.6 k 710.8 k 113.1 1208.6 Production OUT
    4584 40-50 uA 84.5 k 795.3 k 132.1 1340.7 Production OUT
    4585 50 uA 75.8 k 871.1 k 124.2 1464.9 Production OUT
    4586 50 uA k k Production OUT
    4587 50 uA k k Production OUT


    Compton Run Summary:













     Run #   Start Time   Comments   IHWP 
    23128 16:35 Production OUT
    23129 17:04 Production OUT
    23130 17:55 Production OUT
    23131 18:51 Production OUT
    23132 19:39 Production OUT
    23133 20:30 Production OUT
    23134 21:20 Production OUT
    23135 22:12 Production OUT
    23136 23:02 Production OUT
    23137 23:54 Production OUT