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    User name xfzhu

    Log entry time 05:33:28 on June21,2001

    Entry number 63977

    keyword=Target - EPR - 38.8%

    5:10am, EPR, gradient coil transverse 5.0A, longitudinal -3.0A,
    laser #6, polarized 3He cell position, during data taking runs.

    1st flip failed by Xiaofeng . After tuning the absolute and relative gains, Xiaochao suceeded in doing two more sweeps.

    2nd flip from 5 points in the bottom, polarization is about
    38.96% +/- 1.31% down and 38.79% +/- 1.20%

    3rd flip: better
    down: frequency -46.27 +/- 1.49 KHz, polarization 38.42% +/- 1.29%
    up: frequency shift 44.97 +/- 1.82 KHz, polarization 37.35% +/- 1.51% up



    From this measurement it is hard to tell whether the polarization reaches maximum or is still going up, so we'd like to stay at gradient 5,0/-3.0A for 4 more hours.