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    User name D. Parno

    Log entry time 13:32:49 on March 03, 2009

    Entry number 264317

    This entry is a followup to: 264311

    Followups:

    keyword=New structure in LHRS S2 ADCs

    We're trying to get to the bottom of higher T3 rates (~600 Hz) in the LHRS after the polarity change and return of beam today.

    The figures below (for an N2 reference cell run) show a change in the structure of the S2 ADC signals since weekend running. There is a second peak at higher bin than the first, with a clear separation between the two (Fig. 1-3). This also shows up in the plots of the same signal without pedestal subtraction (Fig. 4-6).

    I don't see structural differences in the other online plots.

    A copy of this log entry has been emailed to: brads, vasulk, riordan



    Figure 1



    Figure 2



    Figure 3



    Figure 4



    Figure 5



    Figure 6