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    User name bogdanw

    Log entry time 20:41:46 on January14,2001

    Entry number 54726

    keyword=Short GC PMT 9

    PMT 9 on the Short Gas Cherenkov counter ( Left Arm ) has a problem
    with the divider. I reduce HV from 2600 to 2400 because of this.
    Two signatures of the divider problem are:
    1. Amplitude spectrum has non statistical shape.
    2. Noise is unstable. Most of the time is about 600 Hz, but can reach 1 MHz.