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    User name R. Michaels

    Log entry time 21:41:44 on November21,2005

    Entry number 160928

    keyword=Pb tests, part 1

    18:45 ... 1-pass beam available.
    VDCs off. Target at empty.
    Ask for 0.4 uA CW.
    Center BPMs at (0,0) at 4A and 4B.
    Raster check. Want 2 x 2 mm raster.
    Run 3125. spot++ check. Raster pattern not clear. Current too low.
    Ask for 2 uA.

    18:51 MCC says there is a magnet problem in ARC6.

    20:27 Beam returns. Ask for 2 uA. Note, FFB is off.

    Run 3126. spot++ check. "5x5" at MCC results in 3.1 x 4.2
    Run 3127. spot++ check. "3.2 x 2.4" at MCC results in
    about what we want (2x2).

    Go to 0.6 uA
    Then look on BeO target visually. Needed 2 uA. See spot.

    Return to 0.6 uA. Put in Pb target.
    Rates on Pb with nominal (guessed) P0: about 2 MHz on main triggers.
    Run 3128 with no VDCs.

    Implemented low-I BPM software. Go to 0.1 uA. Rates are ok.

    Do a run 3129 with VDCs on just to see where we are.
    Data looks ~ok but probably want higher HV on HAPPEX detectors.

    Going for dP/P = -2 % for alignment checkout ...
    i.e. P0 = 1.0775 GeV.

    A note: The "getbeam" script has been logging EPICS BPM data to a
    file for about 2 hours and will continue indefinitely.