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    User name R. Michaels

    Log entry time 13:22:47 on January 8,2005

    Entry number 138540

    Followups:

    keyword=scaler issues

    First the good news. The scalers seem to be correctly gated by
    the trigger supervisor (cleared at start of run, gated during and
    between runs).

    Next, the slightly bad news. The helicity-gated scalers on both
    HRS are nonsense. They are cleared at start of run and will count
    fine for awhile, then see sudden jumps in the counts on all channels.
    Both Left and Right HRS affected (Left seems worse). One of the
    more common jumps happens to be (2^24)-1 = 16777215. I looked at
    the helicity signals upstairs, they seem fine. Don't know what is
    wrong yet.

    I realize SRC expt does not care about helicity but it's a sanity
    check (the 2 helicities add up, etc). Note, the main normalization
    scaler (seperate unit, not gated by helicity) looks ok.