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<u><b>Hoyoung:</b></u> Working on packing fractions. Used tracking
efficiency method from Anusha. Expanded range of scintillator paddles
to minimize edge effects and fit on the efficiencies to look at carbon
run 73027. Obtained new packing fractions using this. These didn't
change too much but there was some improvement. Looked at low
efficiency runs during HMS DC problems, sorting through by ELOG
entries. Oscar suggested doing a check with the slow raster, looking at
top and bottom half of target cup to look for settling of material. It
seems reasonable that the packing fractions could be finished by around
the end of July.<br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Hykang#Packing_Fraction">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Hykang#Packing_Fraction</a><br>
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<u><b>James:</b></u> Looked at raw (double-spin)asymmetries for
parallel runs with varying energy cuts. The asymmetries seem to
increase as energy is increased. Found a bug in code for cutting on
Cerenkov (cer_h), which seems to make his asymmetries converge with
what Jonathan got few months back with older replayed ntuples.<br>
Going to be looking some more at projecting hits on front tracker,
imparting slow raster for physics azimuthal angle phi_e. <br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Raw_Asymmetries#Asymmetry_change_with_Energy_Cut:_6.2F30.2F2010">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Raw_Asymmetries#Asymmetry_change_with_Energy_Cut:_6.2F30.2F2010</a><br>
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<u><b>Anusha:</b></u> Looking at elastic physics asymmetry as function
of W. Used target polarization from table prepared by James. Looked at
correlations between slow raster x&y and xptar vs W. Oscar
mentioned such correlations were seen during RSS and that an
empirically determined azimuthal dependence was implemented to resolve
this. <br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Elastic_Events_/_Asymmetry">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Elastic_Events_/_Asymmetry</a><br>
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As always, please let me know if I missed something or made a mistake.<br>
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Next meeting will be July 7.<br>
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