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    User name jpchen/X. Zheng

    Log entry time 18:24:49 on July11,2001

    Entry number 65790

    keyword=Laser alignment.

    Target air turned on, oven temperature was raised slowly to 170 degree C (at 11:30 am). Laser alignment completed for both longitudinal and transeverse. Longitudinal
    line #5 (laser #4) focus improved. Line #6 was pretty good already. Line #7 had a
    large spot (still smaller than the oven entrance window. Xiaochao tried for
    some time, seems already optimized. Then we adjusted all the lasers to be a little higher (since Tilghman is at a higher position). All transverse lasers had better
    focus and good alignment. Only did minor adjustment and raised to match the cell
    position. Xiaochao also checked/adjusted 1/4 wave plates and the back-reflection
    spots. 1/2 waveplates motor compueter comtrol has a problem. So the 1/2 waveplate
    alignment will be done tomorrow (when Kathy is available to help solving the 1/2
    waveplat motor control problem.