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    User name Yawei

    Log entry time 22:01:33 on May 02, 2009

    Entry number 270514

    Followups:

    keyword=Good electrons we have since we changed to 3 pass

    Todd and I calculated the raw "real data" we have taken from April 30th
    Swing shift to May 2nd Swing shift, 3 pass. Here is the result:
    LHRS efficiency(good electrons): 42.5%
    RHRS efficiency(good electrons): 49.8%
    LHRS production runs 1704-1778, total events ~86.5M
    RHRS production runs 20596-20648, total events ~65.1M
    Total good electrons: 86.5 x 0.425 + 65.1 x 0.498 = 69.2 M
    (Total good electrons we need: 128 M)

    A copy of this log entry has been emailed to: peter@jlab.org, jiang@jlab.org, doug@jlab.org, averett@jlab.org, jpchen@jlab.org, yawei@jlab.org