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    User name X. Zheng

    Log entry time 21:29:44 on July 3,2001

    Entry number 65610

    keyword=current x=0.6 electron raw asymmetry

    Here is a summary of electron asymmetry obtained from quasi offline analysis:
    data analyzed: run 1502/20502 ~ 1903/20903

    Problem:
    The 4 configurations of longitudinal setting do not agree. Same problem exists
    in 2 configurations of transverse setting.

    Left arm and right arm do not agree well.

    List of analysis to do:
    (1) software cross check (by Nilanga and Alexandre) & double check (myself).
    (2) false asymmetry vs. configuration study;
    (3) cut out events when beam is ramping up.

    Electron Asymmetry:
    Transverse, Beam IN, Field 270
    left: 13017, 0.003312 +/- 0.008765; right: 13443, 0.003602 +/- 0.008625;
    Transverse, Beam OUT, Field 270
    left: 10263, -0.005294 +/- 0.009871; right: 10646, -0.007019 +/- 0.009692;

    Transverse: left: 23280, 0.013104 +/- 0.020520; right: 24089, 0.016006 +/- 0.0
    20173;
    Transverse combined: 47369, -0.001699 +/- 0.014386.

    Longitudinal, Beam IN, Field 0
    left: 28264, -0.002549 +/- 0.005948; right: 29285, -0.010718 +/- 0.005844;
    Longitudinal, Beam OUT, Field 0
    left: 21385, -0.013031 +/- 0.006838; right: 22065, -0.000763 +/- 0.006732;
    Longitudinal, Beam IN, Field 180
    left: 21172, -0.002149 +/- 0.006873; right: 21855, -0.009123 +/- 0.006764;
    Longitudinal, Beam OUT, Field 180
    left: 27679, 0.008036 +/- 0.006011; right: 29427, -0.004608 +/- 0.005829;

    Longitudinal: left: 98500, -0.017255 +/- 0.011055; right: 102632, 0.007762 +/-
    0.010830;
    Longitudinal combined: 201132, 0.014580 +/- 0.007736.