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    User name Jack

    Log entry time 17:49:06 on April18,2001

    Entry number 60704

    This entry is a followup to: 60666

    keyword=EP bottom cherenkov counter

    Where would a light leak come from? From a broken optical fiber used to pulse the
    PMT. The fiber is broken/cut about 4 feet from the PMT. Ambient light was
    leaking in. I put black electrical tape over the broken end of the fiber for now. Joe M., Bodo R. and I did this a few hours ago.