• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT
    Make New Entry, Make Followup Entry

    User name hyde

    Log entry time 06:52:24 on October31,2010

    Entry number 337764

    Followups:

    keyword=Normalization check

    Attempt to compare electron normalization of runs 8160 and 8161
    apply cCleanTrk cut from GoodHRS.h
    apply cut L.cer.asum_c>100
    Run 8160 has 85704 in output root file
    DTC = t10c/t5c = (86607-803)/(81484-79) = 1.054
    u3cnt increments by 23249773-212636=
    Good electron rate, normalized to u3vtoF is
    85704*1.054/23037137 = 3.92e-3


    Run 8161 First 40K events analyzed
    T->Draw("D.t3",cCleanTrk*"L.cer.asum_c>100&&fEvtHdr.fEvtType==3","")
    5696 events
    DTC = D.t3c/[T->Draw("D.t3","fEvtHdr.fEvtType==3","") ]
    DTC = 49462/39625. = 1.248
    u3cnt = 2086503-196652
    normailized electron rate = 5696*1.248/(1889851.)
    = 3.761e-3

    These two electron rates differ by 4%