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    User name xfzhu

    Log entry time 23:43:45 on June25,2001

    Entry number 64610

    This entry is a followup to: 64538

    Followups:

    keyword=rigth arm scintillator

    Fig.1 top shows the TDC(Y axle) and ADC (x channel) correlation from the troublesome rightside PMT of the the first paddle of S2 plane in right arm spectrometer.
    Fig 1 bottom shows the comparison from left side PMT.
    the second peak in right side TDC shows no correlation with the adc signal.

    Fig 2 tries to find the correlation of second TDC peak with event type
    top-left: adc .vs.tdc with event type equals 1
    top-right: tdc spectrum with event type equals 1
    bottom-left: adc .vs.tdc with event type equals 2
    bottom-right: tdc spectrum with event type equals 2
    as Bob mentioned before, The events with type=2 contributes very little to the second peak.


    FIGURE 1

    FIGURE 2