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    User name lkaufman

    Log entry time 18:43:05 on October 16, 2005

    Entry number 157130

    keyword=New HV for 40 uA beam current

    We decided to run at 40 uA to see if we'd have fewer beam trips for our
    scanner runs. As a result, we changed the detector HV. The changes were
    made during run 5674.

    for 58 uA: Det1 = -1390 V, Det2 = -1490 V, signal size ~45k
    for 40 uA: Det1 = -1430 V, Det2 = -1530 V, signal size ~43k

    The left profile scanner was saturating part of the time during run 5673
    at 58 uA and HV -1500 V. For 40 uA, I left the HV at -1500 V. The HV
    will have to be changed when we go back to 58 uA running.