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    User name jpchen

    Log entry time 23:50:49 on August 8,2003

    Entry number 109440

    keyword=Swing shift syummary

    8/8/03 Swing shift summary:

    Shift workers: B. Craver, D. Margaziotis, J. P. Chen

    16:00 MCC continue working on changing teh setting for beam separation.
    17:00 Beam back, tuning, checked spot size, still too small (42um, 75 um), position
    off 5 mm when fastfeedback on. Also energy lock FF had problem.
    17:30 Turned over to Moller group (Eugene and Sasha)
    19:45 Moller completed: pol=76.5%, C=-(50+-5)% (with only 2uA and low bleedthrough)
    20:00 Backed out Moller tune, checked Raster size good.
    Requested to tune through Compton. David went to MCC to help with Compton tuning. Moved in single 12C foil.
    20:40 Beam through Compton chicane. David could not move the electron detector in. We will go back to tuning for size at the target.
    While tuning spot size, we also started optics run.
    Harp scan 2330, 2331, size still small, especially in x (56, 79) um.
    20: 50 run 3271, 3272, 3273 single 12C, raster off, Septum=403.75A (set=405.8), HRS_r=3.15 GeV/c, y_targ was at -7 mm.
    21:19 run 3274, Septum=405.75A (set=407.8), HRS_r=3.15 GeV/c
    21:49 run 3281 & 3282, Septum=405.75A , HRS_r=3.12 GeV/c
    22:11 run 3283 & 3284 & 3285, Septum=409A (set=411A), HRS_r=3.10 GeV/c
    with cut on the central hole, y_targ now is centered.
    It takes HRS_r change by 1.6% and Septum change by 1.3%.
    Harp scan 2332,2333,2334,2335,2336, size finally ok. #5 (175,153), #6 (192,149)um,
    OTR (160,166).
    22:47 run 3286, multi 12C foils, HRS_r=3.10 GeV, Septum=409A, raster off, 800K.
    23:03 run 3287, empty target, raster off, 118K.
    23:12 run 3288, empty target, raster on, size=3.5x4
    3289, empty, raster on, size=3x4
    3290, empty, rasteron, size 3.5x3.5, 400K
    23:31 run3291, reference cell empty, 140K
    23:42 run3292, reference N2 run, 662K
    23:50 Requested controlled access to take out sieve slits and install target collimators. Also Compton slow control reset.