[Sane-analysis] Minutes of June 16 Analysis Meeting

[Narbe Kalantarians]

_*Hoyoung:*_ Used tracking efficiency correction of Anusha's to look at 
runs used for getting packing fractions. This seemed to decrease the 
useful W-range some (1.2-16GeV -> 1.2-1.5GeV). Mark thinks this might be 
caused by edge effects and/or inefficient edge scintillators being used 
suggested using a wider range of scintillators to see if this helps. It 
appears that some packing fractions don't change much with this. Will 
look at some of the runs with super-low efficiency due to the HMS DC gas 
drop.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Hykang


_*James:*_ Looking at tracking particles to Front Tracker. Compared hits 
from tracker to projections from physics angles theta and phi. These 2 
methods agree well in the Tracker region then diverge. Hovhannes 
suggested that the  divergence might be mostly from the low energy 
particles (<1GeV). Oscar did a parallel study and seems to be consistent 
with what James is seeing. These results seem to suggest better 
agreement at forward angles.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Particle_Tracking_to_Front_Tracker%2C_Target#Hit_vs._Projection.2C_Distance_from_Center_of_Tracker.2C_6.2F16.2F2010


_*Narbe/Hovhannes:*_ Incorporated slow raster into the GEANT. Made 
gen-MC files for parallel and did a fit for reconstruction. 
Perpendicular is in progress.
Looked at W distributions for parallel, perpendicular as well as no 
field settings with Q2 binning. Compared reconstructed with generated 
and seem to have good overall agreement. Will look at using one more Q2 
bin and re-bin W to account for the resolution seen in the data.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/SANE_GEANT#06.2F02.2F2010


_*Whit:*_ Working on documentation for his analysis C++/ROOT based 
software InSANE. Showed an informative presentation. Encourages people 
to try to use this, especially fellow students.
http://quarks.temple.edu/~whit/SANE/InSANE_manual.pdf


_*Jon:*_ Working on implementing a cellular automata based method for 
cluster reconstruction for the physics MC (pmc). Will compare with 
reconstruction from GEANT.
http://www.slac.stanford.edu/spires/find/hep/www?rawcmd=f+a+breton+and+t++automata&FORMAT=WWW&SEQUENCE=


As always, please let me know if I missed something or made a mistake.

Next meeting will be June 23
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