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    User name R. Michaels

    Log entry time 17:15:07 on February19,2011

    Entry number 347677

    keyword=small update on helicity

    I have to go home now, but so far what I know about helicity is:

    1. For both Larry and me (independently), the predicted helicity
    is frequently not equal to the measured helicity. There could
    be lots of reasons why.

    2. No evidence of deadtime (missing sequences) yet, but this
    needs to be checked. If there is deadtime it can make the
    reconstruction difficult and would explain the mismatches.
    Should see +--+ and -++- forever with always pattern_synch=1
    for the first, and pattern_synch=0 for the other 3. If this
    repeats forever with no glitches, it is good. Please check !

    3. I asked Riad if the pseudorandom algorithm changed. It was not.
    I'm asking Qweak to check if they see the predicted sequence.
    There's a possibility the helicity board is in a funny state.
    No answer yet.

    Turned off my VME check code before I left.