[Sane-analysis] Minutes of January 26 Analysis Meeting

[Narbe Kalantarians]

_*James:*_ Printed out asymmetries tables in format that is esaier to 
read, sorted by bins and cuts.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Binned_Asymmetries#Matrix_of_Asymmetries_by_Run_number_and_Cut:_1.2F26.2F2011
Will be giving a seminar on SANE at University of New Hampshire in the 
next few weeks. This will be similar to the Hall C meeting talk he gave, 
getting more in depth with the physics and instrumentation&polarized target.


_*Luwani:*_ Looked at pi0 asymmetry as a function of (cluster)energy for 
one run (73001; 4.7GeV parallel). The asymmetry is essentially 0. Will 
include more runs/statistics.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Electron_and_pi0_energy_plots#Asymmetry


_*Hoyoung(Jan 27th):*_ Looked at packing fractions with corrected (HMS 
single-arm)MC and slow raster definitions (for slow raster radius < 
1cm). The correction for the MC is for the elastic peak where it was 
previously being smeared out due to some bug. Was seeing a significant 
increase in radiative tail for NH3 run 72957. For carbon run 72954 not 
much had changed though.
http://www.jlab.org/~hykang/pf/20110125/
Working on comparing slow raster for data and MC.
http://www.jlab.org/~hykang/pf/20110125/sr0.7/
For both of these, though, found fixed code hadn't been checked as 
thought from CVS. Will get it fixed and look again
Looking some more at charge asymmetry. Mark mentioned that a cut on beam 
current might be necessary. This is because for the scalers, when there 
were periods of no beam (for few minutes) during a run there would be a 
default value of input of 30nA. Suggested a cut of I_beam > 60-65nA.


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

Next meeting will be February 2nd 3:30pm JLab time.


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