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    User name Kalyan

    Log entry time 12:33:27 on November 25, 2008

    Entry number 250700

    This entry is a followup to: 250558

    Followups:

    keyword=Re: Issues remains & Full Scalar consistency check added to online plots

    During access today Vince and I checked the T3 signal going into the L-HRS scaler. The signal itself looks good(about 100ns wide). We did a test to see if we can repeat the problem of 1% extra counting in the L-HRS T3 scaler.

    1. With a 10khz pulser in T3(prescaled to 1khz) we don't see any difference in counts between HRS and BigBite on all gated and ungated scaler.

    2. With 1kHz random rate (from PMTs) in T3 we see LHRS counting more than BigBite - problem persist.

    3. We took a copy of T3 coming from BigBite and plugged into L-HRS scaler(replacing the existing copy coming from L-HRS). In this case both HRS and BB counts are same with random rate - problem fixed!

    I think this will fix the problem on T3.



    A copy of this log entry has been emailed to: rom,vasulk,jinhuang,jiang,gen