[g13] Tag Ratios

ctaylor at jlab.org ctaylor at jlab.org
Mon Oct 12 11:46:19 EDT 2009


Everyone concerned,

After the meeting I looked at the plot of the tag ratios again, and
realized that the reason for the differences is actually quite obvious.
First off, I missed plotting one of the curves- 53770. The corrected plot
can be seen here:

http://www.jlab.org/~ctaylor/gflux/Tag_Ratios.ppt

As mentioned in the meeting, the highest curve belongs to 53229, which did
not have collimation. The runs 53228, 53389, 53530 and 53997 were run at
1.99 GeV, which all have ~0.7 tag ratio. The runs 53589, 53699 and 53770
were run at 2.654 GeV, which all have ~0.8 tag ratio.

Both the bad runs 53214 and 53480 were run at 1.99 GeV.

Chuck





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