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<u><b>Narbe:</b></u> Latest field corrections implemented in to GEANT.
Looked over plots with Oscar and Hovhannes and determined the
reconstruction is being done correctly. Will be able to use this now
for obtaining dilution factors, relative efficiencies, and radiative
corrections.<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> Started on Tech Note detailing the work he did for
the target polarization analysis. This explains the process of
obtaining the corrected target polarizations.<br>
<a class="moz-txt-link-freetext" href="http://twist.phys.virginia.edu/~jdm2z/sane/target_tech_note.pdf">http://twist.phys.virginia.edu/~jdm2z/sane/target_tech_note.pdf</a><br>
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Updated work on Cerenkov TDC peaks from last week. Results appear to be
consistent with Whitney's numbers.<br>
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<u><b>Jon:</b></u> Worked on Cerenkov efficiency. Obtained vector
coefficients for these.<br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Jrm_cer_effic">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Jrm_cer_effic</a><br>
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Looked at double peak events in Cerenkov, to pick out possible photon
conversion events. Didn't appear to be that many. Will look with more
statistics though.<br>
Mark suggested possibly looking at double cluster events which went
through only one Cerenkov mirror but double cluster at BigCal to pick
out e+e- pair candidates that originated from the target. <br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Jrm_double_clust">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Jrm_double_clust</a><br>
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<u><b>Whit:</b></u> Started database(s) tabulating the different
Cerenkov configurations during the running. Still a work in progress,
but in a useful state.<br>
<a class="moz-txt-link-freetext" href="http://quarks.temple.edu/~whit/SANE/databases/">http://quarks.temple.edu/~whit/SANE/databases/</a><br>
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<u><b>Anusha:</b></u> Looked at sieve slit run to study observed shift
in hsxptar. Applied Gaussian fit to get offset, which was used for the
slow raster y offset. Then applied beam offset (from EPICS) to correct
x, y, and P diff (measured - expected). The sieve-slit offset seems to
be a significant effect. This was done for the 5-pass elastic runs.<br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Sieve_Slit">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Sieve_Slit</a><br>
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As always, please let me know if I got something wrong or left out
anything.<br>
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Next meeting will be on April 28th.<br>
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