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User name dhamilton
Log entry time 06:11:48 on April 4,2008
Entry number 229844
keyword=Beam position problems - empty target for harp scan
As we are having trouble with beam y position stability (drifted by 4mm twice in 20 minutes - see below) we are moving to the empty target and will ask for a harp scan. We will then check the spot position again on the BeO target.
FIGURE 1