[Sane-analysis] Minutes of 12/17/09 Meeting

[Narbe Kalantarians]

_*Whit:*_ Couldn't join due to traveling. Sent a link on his progress on 
neural network
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Whit


_*Hovannes:*_ Made progress on recalibrating data after implementing his 
neural network
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Cerenkov_TDC_versus_BigCal_ADC_correction_for_Noisy_Runs
Showed his corrections for noise in some runs seen from Cerenkov.
Here,Sector = (Cer)Mirror.
Primary peaks represent RCS, secondary Protvino. Some have 2 secondary 
peaks, which is due to both top and bottom being triggered. This shows 
improvement and is definitely a good start. Will need more detailed look.

Seeing sizable change in calibrations, overall, with nn implemented, due 
to correction of energy and position in BigCal. Getting close to what 
GEPIII had.


_*Narbe:*_ Getting familiar with SANE GEANT (old one from Glen Warren 
for now).  This doesn't radiate the events. Will work on adding that in, 
possibly the one used in SIMC.
_*

James:*_ Wrote a script to make TE override files. Using start/stop 
times from scalers. Working on setting up code to be able to cull data 
from when polarization drops. Basically to count when there is charge 
and (target)polarization is not 0. Mark suggested using time stamp from 
EPICS.
 https://hallcweb.jlab.org/experiments/sane/wiki/index.php/User:Jmaxwell


_*Jon:*_ Got text data files of BETA triggers in x_Bjorken bins. This is 
similar to what Frank Wesseleman did for GEN.
 http://www.jlab.org/~jrm/table_n1/
Cuts used : 1 cluster in BETA.
Made file containing half-wave plate status for each run.


_*Oscar:*_ Looking at perpendicular runs where spin asymmetry decay has 
been noticed.
http://www.jlab.org/~rondon/sane/analysis/replay/?M=D
Cuts used: aclust w/ trig=4, nclust=1 (1 cluster in BETA).
Will redo with Cerenkov cuts included.


***The next SANE meeting will be after New Years (01/06/10). For the 1st 
meeting of the new year, students will have outlines for their talks to 
be presented at the upcoming Hall C winter Uers' meeting.

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