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<u><b>Narbe:</b></u> Ran SANE GEANT3 for 4.7GeV parallel data with
higher statistics. Added tracker and hodoscope variables to
reconstruction. Compared reconstructed/thrown. Working, along with
Oscar, on getting scripts to work for batch job submittal. Working on
adjusting package to read in target material information (Z, A,
densities, ...) for various packing fractions to be able to obtain
dilution factors. <br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/SANE_GEANT">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/SANE_GEANT</a><br>
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<u><b>James:</b></u> Produced tables for calculated target polarization
and calibration constant for each run. Working on retrieving corrupted
data/event files ,which were mostly around the beginning<br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/User:Jmaxwell#Important_Links">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/User:Jmaxwell#Important_Links</a><br>
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<u><b>Hovhannes:</b></u> Per request, made plots showing improvement
from implementing timing(time-walk correction) and geometric cuts to
Cerenkov TDC spectrum. Plots shown are for mirrors 1, 3, and 8 (top to
bottom, respectively), columns 1 and 2 (left and right panels,
respectively). The black curves are before and red curves after
implementation of these cuts. Mirror 3 loses stats, which might be from
losing back-scattered events. <br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Cerenkov_TDC_Improvement">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Cerenkov_TDC_Improvement</a><br>
Next meeting will be Feb 17 2010 at 3:30pm<br>
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<u><b>Luwani:</b></u> Finished beam position plots for remainder of
runs. The quantities are Tx and Ty, which are, respectively, the
horizontal and vertical beam positions projected back to the
target.The scale is millimeters. Will do similar plots for the target
encoder positions to narrow in on why some runs show target edges on
the Slow Raster (ADC) distributions. <br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Beam_Position_Studies">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Beam_Position_Studies</a><br>
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Hovhannes also mentioned that he noticed that the helicity information
seems not well known, specifically the polarity for the helicity
scalers that are written into the data. He mentioned that when he flips
the sign on what these nominally are the asymmetries improve but the
dead-times get wider in resolution and vice-versa. <br>
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Mark mentioned that it is not known what polarity the helicity scalers
were set in the beginning of the experiment.<br>
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His asymmetries seem to be consistent, overall, with what Jon has been
getting. <br>
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<i>*Please add or correct if I missed something or got something wrong.</i><br>
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The next meeting will be March 3rd at 3:30 pm <br>
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