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    User name M Friend

    Log entry time 18:09:48 on June 8,2010

    Entry number 325308

    keyword=Compton spike in rate

    There was a quick spike in the Compton background rate and in the photon detector PMT base current (green line). Spikes in the base current are very bad for the PMT, and if this continues to happen we will need to turn off the detector.

    FIGURE 1