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    User name Moffit

    Log entry time 16:30:17 on February 27, 2009

    Entry number 263709

    This entry is a followup to: 263700


    keyword=Irregular helicity correlated T8.

    If I'm doing this correctly, there's a beam helicity correlated asymmetry in the un-prescaled T8 counts in the LHRS end of run.

    For the end-of-run referenced... I get: (4549160.0-4535537.)/(4549160.0+4535537.) = 1.500e-03 That's 1500ppm.

    Bigbite end-of-run isn't showing this large of asymmetry.

    During transversity... we also noted a large asymmetry from this 1024Hz clock in the lumi and HAPPEX data. But it was nearly 4000ppm.

    I think this 1024Hz pulser is in the RHRS, and is fanned out to the HAPPEX crate in the Right arm, as well as to the LHRS and Bigbite DAQ.