[Sane-analysis] Minutes of January 05 Analysis Meeting

[Narbe Kalantarians]

_*Hovhannes:*_ Looking at (perpendicular)asymmetries using the updated 
beam and target polarization tables. When applying the target 
polarization some of the runs change signs, mostly when the target 
polarization changes sign. This seems to be consistent with what James 
and Oscar see when applying the half-wave plate status/correction to 
both the beam polarization and the asymmetries. There was some 
discussion over the idea of whether the target polarization sign might 
be incorrect at times -James will check this. Will look at asymmetries 
for each cup.
Running quality checks: picking out runs with drastic change in 
polarization.


_*James:*_ Updated charge normalization for his asymmetries analysis.  
Using BCM1 and h- over BCM1 and h+ to make q ratio used in the charge 
normalization (this is g513 and g514 in the scaler files). Previously 
BCM2 was used (517 and 518).
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Raw_Asymmetries#Update_to_Charge_Normalization:_1.2F5.2F2010
Updated beam polarization tables, both w/ and w/o half-wave plate status.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Beam_Polarization_Per_Run#Beam_Polarizations_with_HWP:_1.2F5.2F2010
Posted a draft of his talk for the Hall-C meeting, focusing on the 
asymmetries analysis with some mention of the HMS analysis (inclusive, 
packing-fractions/dilution factors). Got some suggestions to implement 
and will send a revised copy.
http://twist.phys.virginia.edu/~jdm2z/sane/hallcwinter2011/HallCWinter2011.pdf


_*Anusha:*_ Started on making the azimuthal angle corrections for the 
target magnetic field.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Azimuthal_Angle_Correction_for_target_mag._field
Posted a draft of his talk for the Hall-C meeting, focusing on the 
proton form-factor ratios with (elastic) asymmetries. Got some 
suggestions to implement and will send a revised copy.
http://www.jlab.org/~anusha/Talks/HallCUserMeeting2011.pdf


_*Whitney:*_ Started a write-up on how to use his analysis code
http://quarks.temple.edu/~whit/SANE/analysis_main/how_to/InSANE_how_to.pdf
Ran checksum on the SANE (raw)data and didn't find any problematic files.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Whit#Data_Integrity
Working some more on his online database, which produces diagnostic 
plots for each detector. Oscar suggested this be used to look at some of 
the specific runs that have been giving drastically different 
packing-fractions for the same target loads.
http://quarks.temple.edu/~whit/SANE/analysis_main/runbrowser.php
Will post a draft of his talk for the Hall-C meeting, focusing on the 
detectors and neural network aspects.


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

Next analysis meeting will be January 12, 2011, at 3:30pm.
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