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User name M Friend
Log entry time 23:46:50 on November16,2009
Entry number 300442
This entry is a followup to: 300423
keyword=Compton table scanLooking at the analyzed data:
The vertical table position is 38.5mm and the horizontal table position is 72mm +/- 1mm for the GSO to be centered on the photon beam. The nominal positions are y=43.75mm and x=73.5mm, so we need to move down in y by 5mm (consistent with old results), and move down in x by 1mm (during HAPPEX we centered the collimator in x to 73.5, so this is a slight shift from before). If we use a smaller collimator, we will need to move the collimator to be centered at this new position.
FIGURE 1
FIGURE 2
