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    User name R. Michaels

    Log entry time 11:59:35 on October 6,2002

    Entry number 87458

    keyword=some shifted VDC data L-arm

    Roughly 2 % of events have shifted time data in VDCs on L-arm.
    I think this is because of missed S0 signal used for retiming but the
    S0 rate is only 4 kHz, the width 100 nsec, so this can't be pileup.
    There are much fewer such events on R-arm which has a traditional setup.

    FIGURE 1