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    User name M Jones

    Log entry time 17:55:45 on February14,2002

    Entry number 82781

    Followups:

    keyword=Time estimate for Ac calibration from ep elastics

    Time estimate for Ac calibration from ep elastics
    ----------------------------------
    Assume
    current = 100uA
    beam helicity = .75
    beam energy = 3.944
    Q^2 = 4.13

    Combined efficiency of carbon and CH2 = 0.55
    Effective analyzing power of carbon and CH2 = 0.09

    so Figure of merit = eff x Ac x Ac = 4 x10-3

    I get rate of about 90 Hz for elastics.

    To get del(Ac)/Ac about 2 - 2.5% is 24 hours
    This will give del(Ge/Gm)/(Ge/Gm) of about 5% .