[Sane-analysis] Minutes of May 12 Meeting

[Narbe Kalantarians]

_*Hoyoung:*_ Continued working on packing fractions (PFs). Corrected PFs 
with HMS tracking efficiency, by applying it to directly to the data. 
This made the PFs really large, which was from using the efficiency from 
all triggers.  Will redo using efficiency for electron triggers.
Will look at delta efficiency dependence using scintillators similar to 
what Anusha did, which consists of using the scintillator x-planes to 
define a "hit" and see its efficiency as a function of x-plane location.
http://www.jlab.org/~hykang/pf/20100325/


_*Hovhannes/Narbe:*_ Obtained minimum energy cut for each (BigCal) block 
and implemented in to GEANT. This  was to try to smear the resolution in 
the MC(~6MeV, compared to~10MeV for data), but so far the effect was 
small.  Will update the Replay engine in the CVS soon.

Generating pi0's but did not see very many. Need to run with more 
statistics. Working on including secondary particles in ntuples.

Connected new RAID hard-drive to Octavian for more storage (~4TB)


_*Jon:*_ Worked some more on double clusters, with looser threshold cuts
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Jrm_double_clust

Looked at parallel asymmetries with recent Replay in CVS. The time 
dependence seen before seems to be vanishing.
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Jrm_calc_asym


_*James:*_ Looking at particle tracking in front tracker, extrapolating 
straight line from hit in calorimeter. Looked with all energies, then 
with some Energy cuts/regions. Mapping seen in y appears to not be 
correct. Will look at azimuthal and scattering angles for electrons, 
look at their energy dependence, and implement slow raster. Will try 
rotating from tracker coordinates to lab frame, then extrapolate to 
tracker. Resolution will come from higher energies (>1.3GeV).
https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Particle_Tracking_to_Front_Tracker%2C_Target#Straight_Line_from_Calorimeter.2C_5.2F12.2F2010

_*Whit:*_ Looking at various clustering algorithms to see if they can be 
used for defining clusters.
Working on analysis software, including an event viewer with a wrapper 
for fortran/PAW using SANE ntuple 1 as a reference.


_*Oscar:*_ Looking in to GIZMO problem.


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








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