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    User name Bo Zhao/Jin Huang

    Log entry time 08:17:07 on April24,2009

    Entry number 267798

    keyword=Shift summary - 04/24 Owl

    00:00 take over the shifts, waiting for the harp scan from MCC. Call MCC several times to ask for a good harp scan for 1H03A, unfortunately it is still noisy, while 1H03B is good enough (see seperate log 267738).
    02:00 Jin, Vince and Bryan tried to figure out why the carbon foils are missed. They suspect it is due to the wrong polarity of Q1 in Both L-arm and R-arm (see log 267721). Paged RC and we decided to try inversing polarity of Q1 of L-arm at first, then the carbon foils are back, see log 267728.

    04:00 Even with a noisy harp scan of 1H03A, starting toward next step: Beam alignment check using BeO target.

    05:00 Get beam centered. Starting Bull Eye scan

    06:37 Bull Eye Scan finish. BeO central BPM is A(-1.3 1.5) B(-0.8 1.5)

    07:00 raster scan show a good raster setting is 4x3 MCC = 2.5x2.5

    07:00-08:15 scan for center of ref cell, ref center is
    BPMA = (-1.0,2.1)
    BPMB = (-0.5,2.1)
    Hitting all 4 corners at 10x10 raster