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    User name xiaohui

    Log entry time 23:34:18 on May19,2008

    Entry number 238891

    This entry is a followup to: 238879

    keyword=Decrease threshold

    After we turned off the PS and most of the shower blocks, we saw a significant distortion on coint. time peak due to the time walk of the smaller signals. I recommend that we do a threshold scan, and probably can decrease the threshold to make the peak narrower, and make cleaner cut on coint. time.