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    User name hyde

    Log entry time 12:41:13 on November 1,2010

    Entry number 337983

    keyword=Cerenkov vs PR

    Run 8161
    PR1+PR2
    Add cut on Cerenkov timing abs(D.CerInT3-2300)<500

    Clean electron sample in PR
    T->Draw("L.prl1.asum_c+L.prl2.asum_c",cCleanTrk*"fEvtHdr.fEvtType==3","")

    Now look at Cerenkov ADC, with PR sum >800
    T->Draw("L.cer.asum_c",cCleanTrk*"800<(L.prl1.asum_c+L.prl2.asum_c)&&fEvtHdr.fEvtType==3","")

    and add cut on D.CerInT3

    The Cerenkov disc cut removes a significant number of events above
    pedestal


    FIGURE 1

    FIGURE 2