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    User name E. Christy

    Log entry time 20:46:04 on March29,2014

    Entry number 388021

    keyword=centering beam

    We continue trying to center the beam to figure out why we see ~1kz on the empty targets. We had already moved the beam -2mm vertically and found no change so we also asked that the beam be unrastered and moved -2mm horizontally. Again we found no change. We then moved the beam up +3mm relative to nominal. At this position the empty target rate is now about the same as cosmics.