[Sane-analysis] Minutes of November 10 Analysis Meeting

[Narbe Kalantarians]

_*Hoyoung:*_ Redid perp asymmetries after having Replay updated from 
CVS. Using charge asymmetry values from ntuple, which is consistent with 
scalers. They are slightly different fro mBETA due to cuts used. 
Including the dead-time from ntuple causes points to jump some. Will 
look into this.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/HMS_total_asymmetry
Starting on calculating dilution factors for parallel HMS data.

_*James:*_ Cross-checking reconstruction done by neural network. Using 
updated Bdl from Oscar, with phi corrections, to obtain physics 
azimuthal angle; phi_e. Will look at delta phi = phi from cluster - phi 
bent by B-field.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Particle_Tracking_to_Front_Tracker%2C_Target#Revised_Phi_Correction_for_Bdl:_11.2F10.2F2010


_*Narbe:*_ Working on calculating rates from GEANT-MC. using method 
similar to that done for pol_hms_single. Have some bug(s) to work out 
and need to use recently corrected cross-section.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/SANE_GEANT#11.2F10.2F2010
Revisiting obtaining kinematic binning table. This will be for Q^2, W, 
theta, and E' bins.


_*John:*_ Looking at electron and positron hits on horizontal (x) and 
vertical (y) lucite. Will show something next week.
Will also look at lucite efficiencies as functions of x and y.


_*Anusha:*_ Comparing dat/MC for an NH3 run (72790). Blue points are 
data and yellow curves are MC. Has dat/MC ratio ~1.6. Putting in 
vertical beam offset. Will check to if offsets are beign done correctly. 
Will compare yields with what Hoyoung is getting.
http://www.jlab.org/~anusha/mccomp72790.gif


_*Whit:*_ Getting an average number of photo-electrons
parallel: ~17
perp: ~10
Will double-check this.
Made animation of SANE with some event(s) showing light propagation for 
optics. This is related to the lucite.
http://quarks.temple.edu/~whit/SANE/movies/movie12.avi


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

Next meeting will be November 17 ate 3:30pm.


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