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    User name slifer

    Log entry time 00:06:28 on April 04, 2012

    Entry number 369712

    keyword=summary and updated runplan

    The Runplan is updated (dated April 3).

    Summary of last week running:

    We reached W=1.8 GeV (out of planned 2.0 GeV).

    Average positve P_T : about 32%

    Average negative P_T : about -28%

    Average overall polarization : 29.5%

    We took about twice as much data with the target in the negative polarization state as in the positive. It would be best to lean to positive on this next pass thru.

    The new runplan has a more accurate prediction for optimal current and prescale, but shift workers should please optimize as needed in order to achieve:

    ->DAQ rate as close to 6 khz as possible

    ->Deadtime <20%

    ->Current as small as possible (but held in range 50-100nA) to limit depolarizing.

    For this pass, please take dilution runs with both Rasters ON.



    A copy of this log entry has been emailed to: jixie@jlab.org,jpchen@jlab.org