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<u><b>Hovhannes/Narbe:</b></u> Altered SANE GEANT to have several
cluster events. Implemented improved neural network which has edge
effects. Used this to look at pi0 events. Throwing pi0s from target,
plotted invariant mass spectrum and compared for with and without
Cerenkov as well as for some bins in reconstructed energy. The pi0s are
at 0.135 with very little deviation, with a resolution of about 6MeV.
This suggests that the uncertainties are from the reconstruction and
corrections instead of the energy/energies. The plots also show that
the neural network seems to be working very reliably. In process of
running with electrons being thrown from to see how much pi0s are
produced.<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>Jon: </b></u>Investigated further 2 cluster events mentioned
last time. Looked at Cer ADC spectrum for 1 and 2 cluster events,
where the 2 clusters are separated by 12cm. Subtracted 1 cluster
(normalized) from the 2 cluster distribution. Looked at this in
cluster energy bins. This showed the second cluster peak at
lower-intermediate energies. Worked on estimating backgrounds. Will try
using <br>
(2 cluster - 1 cluster(normalized) ) / 1 cluster <br>
Other than that, pretty much gotten it to a point where it's good
enough and will move to doing something else.<br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Jrm_double_clust#Looking_for_Signs_of_e-e.2B_Background">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Jrm_double_clust#Looking_for_Signs_of_e-e.2B_Background</a><br>
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<u><b> Oscar:</b></u> Will talk with Seonho to see if Hoyoung is back
and resume the bi-weekly meetings. <br>
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As always, please let me know if I missed or got something wrong. <br>
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Next meeting will be May 12th at 3:30pm.<br>
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