[Sane-analysis] Minutes of June 1 Analysis Meeting

Narbe Kalantarians narbe at jlab.org
Thu Jun 2 10:55:18 EDT 2011


_*James:*_ Applied preliminary dilution factors to physics asymmetries 
A_1 and A_2. They look reasonable.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/A1%2C_A2_and_Structure_Functions#A1.2CA2_update:_6.2F1.2F2011
Will try applying the Oscar's live-time correction.

Working on using Oscar's live-time corrections.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Dead_Time#New_Livetimes:_6.2F1.2F2011
Will check to see if multiplying by the corresponding prescales.

Back to working on applying the elastic radiative tail correction.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Radiative_Corrections#Starting_to_Apply_Rad_Tail:_6.2F1.2F2011

Worked with Narbe to help optimize the dilution factor effort.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Dilution_Factor#Starting_with_DF:_6.2F1.2F2011

Giving a poster talk on SANE at the users' meeting
http://twist.phys.virginia.edu/~jdm2z/saneposter2011ugm.png


_*Anusha:*_ Compared single-arm(electron) and coincidence(proton) data 
with and without azimuthal correction.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/C_runs_with_Perp._Field_ON#Checked_the_azim._ang._correction_with_Single_arm_electron.2FCOIN_proton_data

Looked at B-field direction with singles data (4.7GeV perp) comparing 
with the B-field being reversed. This seems to show that the field 
wasn't reversed.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Field_direction_check

Elastic dilution factors. Elastic peak aligns reasonably well to the 
proton mass value.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Dilution_Factor_from_NH3
Will check scaling/weighting and use Hoyoung's packing-fractions (He 
amount seems too high).


_*Hoyoung(06/02/11):*_ Tried applying Anusha's azimuthal correction to 
data. Seems to cause more discrepancy between data and MC. The 2 MC's 
(his and Anusha's) seems to be consistent, but the reconstruction 
doesn't. Will look into this with Anusha and Narbe.
http://www.jlab.org/~hykang/pf/20110602/

Working on using Oscar's live-time correction.


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

Next meeting will June 8th at 3:30pm JLab time.

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