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<u><b>James:</b></u> Worked on polarization analysis. IN ratios of
offline/online polarization there were some drops, possibly from drift
in magnetic field. Looked at chi-square of NMR poly-fit. <br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Polarization_Drop_in_Offline_Analysis">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Polarization_Drop_in_Offline_Analysis</a><br>
<br>
Working on improving this fit by possibly using quadratic with a
Lorenztian. Oscar mentioned that such a fitting scheme was used for RSS
<br>
<a class="moz-txt-link-freetext" href="http://twist.phys.virginia.edu/~or/target/BOT_H_TE.EPS">http://twist.phys.virginia.edu/~or/target/BOT_H_TE.EPS</a><br>
<br>
<br>
<u><b>Whit:</b></u> Looked at raw ADC data for Cherenkov to investigate
missing ADC hits. Mentioned that this could be from cross-talk
resulting from threshold settings. Mark mentioned that Cherenkov ADC
(cer_adc) usually displays a peak around 0 with a long tail that is
noticeable at log scale. <br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Gas_Cherenkov_Detector#Data">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Gas_Cherenkov_Detector#Data</a><br>
<br>
<br>
<u><b>Jon: </b></u>Will start working on BigCal (block to block)
timing calibration. An initial time-walk correction was implemented in
the beginning but does not account for some subtleties such as block
overlaps. Will contact Andrew Puckett t osee how he did this for GEPIII.<br>
<br>
Started a page on the wiki, listing the ntuple variables along with
descriptions for them. This is on the main page, under 'Detectors and
Software'. <br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/SANE_Raw_Ntuple_Variable_Description">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/SANE_Raw_Ntuple_Variable_Description</a><br>
<br>
<br>
<u><b>Anusha:</b></u> Worked on elastic calibration for BigCal. Looked
at deltaE = E_HMS - Eclust. Using either older calibration constants or
none (depending on whter it's ntuple variable eclust or e_clust) there
was a shift of -370MeV for deltaE. Using newer constants it becomes
250MeV. This could possibly due to those constants having been
extracted with neural network, which is not yet implemented into CVS
for the Analyzer. <br>
<br>
I can't find the link for the plots. So if anyone does please reply to
this e-mail with it.<br>
<br>
<br>
<u><b>Luwani:</b></u> Started helping with Cherenkov calibrations.
After that will get more involved with pair-symmetric background
investigation.<br>
<br>
<br>
<u><b>Hovhannes:</b></u> Finalizing BigCal Energy calibrations. Has
over half of the data set done and will finish soon. Will focus on the
parallel portion of the data for the immediate future.<br>
<br>
<br>
<u><b>Narbe:</b></u> Altered SANE GEANT(3) to use Peter's latest
cross-section model (F1F209) in place of MRST2001 for inelastic. Talked
with Vahe Mamyan about getting radiative corrections for 4.7 GeV. <br>
<br>
<br>
There will be an emphasis on getting the parallel data more finalzed to
get preliminary A_parallel and A_1 to compare with world data. This is
planned to be done within the next few months. <br>
<br>
Next meeting will be Feb 3 2010 at 3:30pm<br>
<br>
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