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    User name A .Vacheret

    Log entry time 08:15:29 on August21,2001

    Entry number 71648

    keyword=shift summary


    data taken insertable halfwave plate OUT, target halfwave plate IN target at 90 deg.

    2980/21980 good e- 193k/179k grand sum : 3.970 M
    2981/21981 good e- 206k/190k grand sum : 4.366 M
    2982/21982 good e- 204k/189k grand sum : 4.759 M
    2983/21983 good e- 209k/193k grand sum : 5.161M
    2984/21984 good e- 213k/197k grand sum : 5.571M
    2985/21985 good e- 190k/177k grand sum : 5.938M

    4:12 am -> we did a NMR/EPR measurement (18 min)

    2986/21986 good e- 186k/174k grand sum : 6.298M
    2987/21987 good e- 203k/188k grand sum : 6.689M
    2988/21988 good e- 203k/188k grand sum : 7.080M

    The fluctuations of the beam are very large and especially this morning (10%).
    These fluctuations are very big when the beam is tripping and could affect the charge asymmetry.
    It's look like we stay under 200 ppm but the rms in the calculation of the error is big.