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    User name Yi Qiang

    Log entry time 21:41:08 on November 07, 2008

    Entry number 247405

    keyword=Correction Tests

    Field direction, Correction Coil, AFP Loss

    Transverse +, OFF, 1.1%

    Transverse -, OFF, 0.7%

    Transverse -, S:+0.5A L:+0.5A, 1.4%

    Transverse -, S:-0.5A 0.7%

    Transverse -, S:-1.5A 0.7%

    without correction coil, the optimal field direction (less AFP) matches our expectation. However the performence of the corrections seem not consistent with our calculation. Right now the Polarization is about 25%, will continue pumping and do more test later.



    A copy of this log entry has been emailed to: jpchen@jlab.org, zhangyi@jlab.org