[Sane-analysis] Minutes of Feb 17 Meeting

[Narbe Kalantarians]

_*Hovhannes:*_ Tried using (BigCal + Cerenkov TDC) timing cut in place 
of geometric cut for BigCal signal. Using the timing cut in addition to 
the geometric cut gives improved signal for BigCal TDCs.

Looking at background asymmetries (no Cerenkov cut). Background 
asymmetries seem to be significant in size, on same order as asymmetries 
for the perpendicular data. This is a  very preliminary look and 
requires further investigation with varying cuts.


_*James:*_ Looked at drops in polarization due to drifting (target) 
magnetic fields.
http://twist.phys.virginia.edu/~jdm2z/sane/2-17-10-meeting.pdf
The altered/improved shoulder fitting method mentioned previously seems 
to work well. The only time it doesn't seem to work is in the case of 
there being a hump on the peak. This is very rare, though, and only 
occurs about 2 times for the parallel data.


_*Jon:*_ Looked at (raw counts) asymmetries for the 5.9geV parallel data 
with varying cuts to understand what is causing the structures over 
time. These cuts include varying slow raster size and cluster energy. 
The higher cluster energies would cut out the lower energy pair 
symmetric background. Some of the structures do appear to be from 
background.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/User:Jrmulholland#Parallel_5.9_GeV_Analysis


_*Narbe:*_ Got the SANE GEANT3 to work on Octavian. now working on 
refining the reconstruction. Showed some reconstructed values for 
outgoing electron to cluster for simulated 4.7geV parallel setting. 
Needs to use cuts though (>10MeV per block and cluster selection). Will 
compare thrown to reconstructed.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/SANE_GEANT


Next meeting will be Feb 24th.

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