Tonight was another analysis shift.
Chi was working on generator code.
Work also continued on the offset code
with a push to use ep events to determine the offsets. But how to easily
determine ep events for every TOF without the offsets in the first place?
I created a macro that I was hoping could be applied toward
rough coplanarity cuts but am unsure if this is possible. It essentially
fills a histogram of ptl+ptr from eep and cuts on min and max bins as
determined by bin content. The code plots some lines to illustrate these
cuts. I was thinking that the coplanar events lay in the dominant peak of
ptl+ptr and tried to confirm this by plotting ptl:ptr cut on these min and
max bins. Please see the attached plot (ignore the lower left histogram).
The upper left is ptl+ptr with lines representing cut parameters. The
upper left is ptl:ptr cut on these parameters - it looks slightly skewed.
The lower right is the uncut ptl vs ptr. I am looking for a quick ballpark way to
get coplanar events to use in the offset macro.
Pete
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Pete Karpius
Graduate Research Assistant
Nuclear Physics Group
University of New Hampshire
phone: (603)862-1220
FAX: (603)862-2998
email: karpiusp@einstein.unh.edu
http://pubpages.unh.edu/~pkarpius/homepage.htm
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