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<u><b>Hoyoung(Jan 11):</b></u> Looked at one of the (5.9GeV
parallel) runs that have shown significantly different packing
fractions with the same material load. The 5.9GeV parallel runs had
a slow raster radius of ~1.4cm. Tried increasing the slow raster in
the MC to account for this, but it only changed the packing fraction
by ~1%. Oscar mentioned that the MC has too ideal of conditions and
a more realistic approach would be to place a cut on the data to
reduce the slow raster radius to ~0.8cm.<br>
Looked at parallel asymmetries for full sub-set of
P_HMS=3.2[GeV/c],Theta_HMS=20.2[deg]. Takes charge asymmetry from
ntuple, which is for every 2s, places cut of delta charge>0.05,
and integrates to add to the total charge. So a good event passing
this cut is then incremented, weighting by charge. This turns out to
not be too different from what is given in the scaler files. The
charge is given for each helicity pulse and this might introduce
some biasing. Will try adding the total charge. Also made plot of
physics asymmetry A_parallel, correcting for polarizations,
dead-time, and dilution factor. And will provide these plots to
James for his talk at the Hall-C meeting. <br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/HMS_total_asymmetry">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/HMS_total_asymmetry</a>
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<u><b>Narbe:</b></u> Worked on absolute comparisons between data and
MC for BETA. With Mark's help, working on getting cross-section to
be in units of nb/GeV/sr. Also, cross-section was hard-coded to use
atomic and nuclear numbers for NH3 only. So this got adjusted to
have carbon as well. (Slowly, but surely)Reaching some convergence.
<br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/SANE_GEANT#01.2F12.2F2011">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/SANE_GEANT#01.2F12.2F2011</a><br>
Working on getting asymmetries for random backgrounds.<br>
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<u><b>James:</b></u> Updated TE's to include (statistical)errors.
Will change to standard deviation of points. This will be a part of
the overall systematics. <br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.ph/Offline_TE_Measurements#Offline_TEs_with_Error:_1.2F12.2F2011">https://hallcweb.jlab.org/experiments/sane/wiki/index.ph/Offline_TE_Measurements#Offline_TEs_with_Error:_1.2F12.2F2011</a><br>
Posted revised copy of his talk for the Hall C meeting<br>
<a class="moz-txt-link-freetext" href="http://twist.phys.virginia.edu/~jdm2z/sane/hallcwinter2011/HallCWinter2011.pdf">http://twist.phys.virginia.edu/~jdm2z/sane/hallcwinter2011/HallCWinter2011.pdf</a><br>
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<u><b>Anusha:</b></u> Looked at plots of ytar, yptar, xptar, and
deltaP vs W in her MC, for the case of singles. Sees correlations
for the ytar, yptar, and xptar vs W. Will try also with MC used by
Hoyoung and Narbe for the packing-fractions.<br>
<a class="moz-txt-link-freetext" href="http://www.jlab.org/~anusha/SANE/targetquan_W1.gif">http://www.jlab.org/~anusha/SANE/targetquan_W1.gif</a><br>
<a class="moz-txt-link-freetext" href="http://www.jlab.org/~anusha/SANE/targetquan_W2.gif">http://www.jlab.org/~anusha/SANE/targetquan_W2.gif</a><br>
Posted revised copy of her talk for the Hall C meeting<br>
<a class="moz-txt-link-freetext" href="http://www.jlab.org/~anusha/Talks/HallCUserMeeting2011.pdf">http://www.jlab.org/~anusha/Talks/HallCUserMeeting2011.pdf</a><br>
Posted copy of abstract to submit for APS meeting in April<br>
<a class="moz-txt-link-freetext" href="http://www.jlab.org/~anusha/Talks/APS_Abstract.pdf">http://www.jlab.org/~anusha/Talks/APS_Abstract.pdf</a><br>
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Whit: Posted a copy of his talk for the Hall C meeting<br>
<a class="moz-txt-link-freetext" href="http://quarks.temple.edu/~whit/SANE/talks/HallC_Users_Meeting_2011.pdf">http://quarks.temple.edu/~whit/SANE/talks/HallC_Users_Meeting_2011.pdf</a><br>
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**A note on the talks: The students will give practice talks this
Friday (Jan 14th) afternoon 5pm JLab time in room F326/327 <br>
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<u><b>Oscar:</b></u> Posted a note on calculating uncertainties for
the asymmetries on the wiki<br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Error_calculation">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Error_calculation</a><br>
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As always, please let me know if I missed anything or if I made any
mistake(s).<br>
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Next meeting will be January 19th at 3:30pm JLab time.<br>
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