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User name Yi Zhang
Log entry time 04:52:29 on November12,2008
Entry number 248340
Followups:
keyword=BPM & raster size after 5 pass beam tuning.After hours effort, we got the final beam position as:
BPMA: (1.010, 1.290)
BPMB: (-1.471, 1.010)
Fig 1 is got on holy carbon target with raster size as (5x6) in MCC unit, which is the maximum value MCC can get(Run# 3276). We can see the hole is 1mm below the center of the spot.
Fig 2 is the spot++ on reference cell, with the same beam position and raster size. Run# 3275
Later we will run at 3x3 mm on reference cell, which in MCC unit is 3x4.
FIGURE 1
FIGURE 2
