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    User name johna

    Log entry time 01:27:26 on March 5,2006

    Entry number 165243

    keyword=Raster-size scan (and neutron rate vs. y-position)

    Took a scan of rates vs. raster size. The first run, 2655, was at a slightly different position, which yielded a much larger neutron rate (but not BB rate).

    All runs have xA,xB=(-0.6,-0.6). First run had yA,yB=(-1.8,-1.5). Later runs were back to nominal: yA,yB=(-1.5,-1.0)

    Run 2655: 3x3 raster (accoring to MCC) [neutron rate=170 kHz]
    fixed the beam y position
    Run 2656: 4.5x4.5 raster
    Run 2657: 6x6 raster
    Run 2658: 3x3 raster (redoing run 2655 in the new beam position)

    500k events each (should give 10-15k T3)

    (analysis of coincidence rates in a seperate entry)