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<u><b>Anusha:</b></u> Applying dead-time correction to form-factor
ratio via asymmetries. This seems to give some improvement. Still needs
to apply the dilution factors, which are in progress. Also checking
with HMS_momentum acceptance. The result is fairly encouraging. <br>
The left panel plots are with -8 < deltaP < 10, right plots are
with -8 < deltaP < 12.<br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Dilution_Factor_from_NH3#Updates_on_02.2F01.2F2012_.28Ar_corrected_with_D.T._and_compare_hsdelta.3C12.29">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Dilution_Factor_from_NH3#Updates_on_02.2F01.2F2012_.28Ar_corrected_with_D.T._and_compare_hsdelta.3C12.29</a><br>
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<br>
<u><b>Whit:</b></u> Looking at reconstructing neutral pions in MC with
(permutations of) 3 cluster events: photon + electron + positron
(green, red, blue, respectively). Using neural network method for
reconstructing the events. <br>
<a class="moz-txt-link-freetext" href="http://quarks.temple.edu/~whit/SANE/sane_meetings/2_1_2012/">http://quarks.temple.edu/~whit/SANE/sane_meetings/2_1_2012/</a><br>
Needs to apply energy cut (E' > 0.6 GeV) to account for resolution
effects.<br>
<br>
<br>
<u><b>Narbe:</b></u> Had mistake in error-bar calculations for dilution
factors, namely that they account for the packing-fraction dependent
densities and lengths of target components. Correcting this the
error-bars appear to be more believable. The MC results still jump
some, which might be statistical. Adding more statistics to be sure of
this. The encouraging thing is that the df's fro mthe MC average to the
those calculated with the F1F209 model. <br>
<a class="moz-txt-link-freetext" href="https://userweb.jlab.org/~narbe/SANE/analysis/dfs/020112/">https://userweb.jlab.org/~narbe/SANE/analysis/dfs/020112/</a><br>
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<u><b>Hovhannes:</b></u> Looking more at the pion contribution,
comparing data and MC. Made similar plots shown at the last meeting for
all the configurations. From this it seems that the efficiency gets
worse at higher energies, which could be related to which Cerenkov
mirrors are corresponding to the events. The upper mirrors seem to have
better focusing than the lower ones. <br>
<a class="moz-txt-link-freetext" href="https://userweb.jlab.org/~bhovik/SANE/">https://userweb.jlab.org/~bhovik/SANE/</a><br>
pos_[setting][energy].ps<br>
Whit will look at the Cerenkov spectrum; # photo-electrons for each
mirror.<br>
<br>
<br>
**For the upcoming collaboration meeting, those who have talks will
plan on posting drafts by the 15th, no later than the 22nd.<br>
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<br>
As always, please let me know if I missed anything or if I made any
mistake(s).<br>
<br>
Next meeting will be Feb 8 at 3:30 PM (JLab time).<br>
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