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User name hyde
Log entry time 12:55:02 on November 1,2010
Entry number 337984
keyword=Cerenkov inefficiency = 7%Cer Trigger is possibly 7.6% inefficient
10318 T3 events in run 8161 with cut of 800 on PR1+PR2
and L.cer.asum_c>100
9561 events with coinc time in D.CerInT3
T->Draw("L.cer.asum_c",cCleanTrk*"800<(L.prl1.asum_c+L.prl2.asum_c)&&fEvtHdr.fEvtType==3&&L.cer.asum_c>100","")
(Long64_t)10318
T->Draw("L.cer.asum_c",cCleanTrk*"abs(D.CerInT3-2300)<500&&800<(L.prl1.asum_c+L.prl2.asum_c)&&fEvtHdr.fEvtType==3&&L.cer.asum_c>100","same")
(Long64_t)9591
10318./9591. = 1.07580
Still some pions in this sample, so this is upper bound on inefficiency
FIGURE 1
FIGURE 2
