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    User name R. Michaels

    Log entry time 05:18:17 on January28,2008

    Entry number 227659

    This entry is a followup to: 227640

    keyword=Compton asymmetries, part 2

    The asymmetries measured with accumulator #3 and #5 tend
    to agree. And modulo a curious offset, they flip sign with
    laser polarization and insertable halfwave plate (IHWP).
    The IHWP is the waveplate at the polarized source.
    As for the offset, I don't know what causes it but I am wondering
    if we have a helicity-correlated pedestal difference (?).
    I haven't checked it yet.

    See fig 1. The errors shown are statistical only.

    FIGURE 1