User name R. Michaels
Log entry time 00:34:00 on December 2,2007
Entry number 217714
Spot++ shows the spot size was approx. 1.6 x 3.9 (fig 1). Run 21379
MCC calls this "6.3 x 3.9"
We want 2 x 2.5, so we request 7.9 x 2.5 in MCC-calibrated-units.
Doing this we obtain 1.7 x 2.2 (fig 2). Run 21380
Good enough, but I am concerned that there is a big angle
of the beam in this region, and the extrapolation to the target
may be uncertain (depends on exact geometry). My point is that
the ideal picture here is BPMA and BPMB have similar size.
But ... this would require a retune which is not practical now.