[Sane-analysis] Minutes of September 13 Analysis Meeting

Narbe Kalantarians narbe at jlab.org
Thu Sep 15 11:44:59 EDT 2011


_*James:*_ Took a detailed look at the 5.9 GeV parallel B-field runs 
that are have the systematically different symmetries. Looked at 
relevant parameters. Reached a consensus that the (NMR) coil might have 
moved, due to material moving possible from radiation damage. Will look 
at function of charge to rule out beam loss.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Final_Target_Polarization#Looking_Closer_at_5.9_para_around_Run_72920:_9.2F14.2F2011


_*Narbe:*_ Update on dilution factors for BETA. Looking at 4.7 GeV 
parallel B-field runs using their nominal packing fractions from the 
table. Using SANE binning. Also using same energy cuts as for 
asymmetries. Seem reasonable. At higher energies there seem to be less 
radiative corrections. Will look at remaining pf's.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Kinematics#09.2F14.2F2011


_*Whit:*_ Looking at asymmetries as function of Cerenkov mirror, and 
also for different energies. Replay is still in progress for some of the 
runs.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Whit#Pseudo_spectrometers
Fixed P_B*P_T for (parallel B-field) asymmetries.
http://quarks.temple.edu/~whit/SANE/analysis_main/runbrowser.php


_*Hovhannes:*_ Looking at physics asymmetries A1 and A2. Polarizations, 
df's(w/ rc's), and elastic tail rc's applied. Using his proposed method 
for A_90 (See agenda for August 31, 2011). Also using SANE bins and 
energy cuts. Sees a good amount of consistency.
https://hallcweb.jlab.org/experiments/sane/bhovik/ASYM/


As always, please let me know if I missed anything or if I made any 
mistake(s).

Next meeting will be September 21, at 15:30(JLab time).


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