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    User name R. Michaels

    Log entry time 21:31:39 on November21,2005

    Entry number 160925

    keyword=going to 0.1 uA

    Beam Info at Mon Nov 21 21:24:40 EST 2005
    Implemented the low-I BPM software.
    Here is a reading of the BPMS before going to 0.1 uA

    Average beam current: hac_bcm_average 0.627562
    X position at 8: IPM1C08.XPOS 0.623602
    Y position at 8: IPM1C08.YPOS 0.102411
    X position at 12: IPM1C12.XPOS -0.209246
    Y position at 12: IPM1C12.YPOS 0.138253
    X position at 4A: IPM1H04A.XPOS 0.284921
    Y position at 4A: IPM1H04A.YPOS -0.276051
    X position at 4B: IPM1H04B.XPOS -0.258331
    Y position at 4B: IPM1H04B.YPOS -0.402301

    And here is a reading after going to 0.1 uA:

    Beam Info at Mon Nov 21 21:26:02 EST 2005
    Average beam current: hac_bcm_average 0.113107
    X position at 8: IPM1C08.XPOS 0
    Y position at 8: IPM1C08.YPOS 0
    X position at 12: IPM1C12.XPOS 0
    Y position at 12: IPM1C12.YPOS 0
    X position at 4A: IPM1H04A.XPOS 0.255008
    Y position at 4A: IPM1H04A.YPOS -1.22361
    X position at 4B: IPM1H04B.XPOS 0.278361
    Y position at 4B: IPM1H04B.YPOS -2.86251

    Ok, now I remember. The readings do go crazy below 0.4 uA
    but its a relative monitor. We will proceed, bravely hoping
    the position didn't change (should check periodically at higher I).


    Rates at 0.1 uA
    T1 = 810 kHz
    T2 = 135 kHz
    T3 = 490 kHz
    T4 = 410 kHz
    T5 = T6 = 0
    T7 = 570 kHz
    T8 = 456 Hz

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