<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body bgcolor="#ffffff" text="#000000">
<br>
<u><b>Hovhannes:</b></u> Redoing ANN to correct for the variable
transfer between ROOT (where ANN is 1st being ran) and fortran
(analysis engine). Will implement this into the GEANT once it is ready.
<br>
<br>
<br>
Oscar mentioned to start thinking about binning (x, Q2, W) for the
asymmetries. This would be based on the resolution seen from the data.<br>
<br>
<br>
<u><b>Hovhannes/Anusha:</b></u> Looking at ep elastic data from CH2.
There is not a small number of pi0's in this data sub-set. But should
be able to use for pi0 calibration. <br>
<br>
<br>
<u><b>Anusha:</b></u> Looked further into cause of the correlations
mentioned the past 2 meetings. Tried changing values for the offset of
the slow raster-y but not much was learned from this. Then looked at
sieve-slit runs, where it seemed that changing the sign of the slope of
the slow raster-y eliminated the correlations. This is opposite to the
sign for x,y,p-diff plots seen before. The runs around this time may
have had a problem with the slow raster drivers. Will check into this.<br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Ep_Elastics">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Ep_Elastics</a>
(scroll towards bottom)<br>
<br>
<br>
<u><b>Narbe:</b></u> Gave status of packing fraction and dilution
factor work done by Hoyoung. It seems that a significant portion of the
packing fractions have been obtained for the HMS parallel data as well
as some of the dilution factors. Some of the runs (5.9GeV) have
tracking efficiency problems, as mentioned in previous meetings. Will
try using the scintillator scheme from Anusha to try to fix this. Will
meet with Seonho this Friday, when he's at JLab to see where to pick up
so to finish this for the parallel data.<br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Hykang">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/Hykang</a> <br>
<br>
<br>
<u><b>Jon: </b></u>Looking at Cerenkov efficiencies for the parallel
data by plotting the physics angles theta(scattered) vs.
phi(azimuthal). Did this for each of the 8 Cerenkov mirrors. Will
combine them and compare with the GEANT-MC(weighted by X-section).<br>
<a class="moz-txt-link-freetext" href="https://hallcweb.jlab.org/experiments/sane/wiki/index.php/User:Jrmulholland#To_Do_List">https://hallcweb.jlab.org/experiments/sane/wiki/index.php/User:Jrmulholland#To_Do_List</a><br>
<br>
<br>
<u><b>James:</b></u> Started looking at Cerenkov TDC peak positions for
the parallel data. Will plot these positions vs. run# and compare with
what Whitney has on his database.<br>
<a class="moz-txt-link-freetext" href="http://www.jlab.org/~jmaxwell/tdc/">http://www.jlab.org/~jmaxwell/tdc/</a><br>
<br>
<br>
As always, please let me know if I missed something or got it wrong.<br>
<br>
Next meeting will be April 14th at 3:30pm.<br>
</body>
</html>