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User name mcnulty
Log entry time 14:12:38 on September 20, 2009
Entry number 290707
keyword=Here are some Qsq results from the Rarm for Hydrogen and Dummy AlOne can see from the Dummy Al target running the two foils in the plot of Qsq vs. y--I suspect this is the case because the det. acceptance for the upstream foil is for lower angles (smaller Qsq) and the downstream has larger angle acceptance (larger Qsq)...But a target vertex z cut would really be helpful here...however, this tree variable R.tr.vz is empty for all our runs. I am looking into this now. The two foils can also be seen in the bottom left plot as the two prongs that stick out (I think). I need some advise on how to proceed teasing out the Al bkgd Qsq signal from the Hydrogen target data.
Note that these plots are for s0 triggers only with the hapdet cuts labelled.
A copy of this log entry has been emailed to: paschke@jlab.org,rom@jlab.org,kkumar@physics.umass.edu
Figure 1
Figure 2
