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Hi everyone - <br>
<br>
Attached is a plot of the heavy gas Cerenkov efficiency as a
function of SHMS central momentum (courtesy of Abishek). With the
technique he used here, there could be a little pion contamination
remaining in the sample, so the true efficiency could be a little
higher. I think the main points are:<br>
<br>
1. The efficiency for electrons is high (at least 99%) for a cut of
npe>2<br>
2. It is pretty much independent of momentum<br>
<br>
Cheers,<br>
Dave<br>
<br>
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<th valign="BASELINE" align="RIGHT" nowrap="nowrap">Subject:
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<td>hgcer efficiency</td>
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<th valign="BASELINE" align="RIGHT" nowrap="nowrap">Date: </th>
<td>Wed, 3 Oct 2018 14:06:53 -0400 (EDT)</td>
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<th valign="BASELINE" align="RIGHT" nowrap="nowrap">From: </th>
<td>Abishek Karki <a class="moz-txt-link-rfc2396E" href="mailto:abishek@jlab.org"><abishek@jlab.org></a></td>
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<th valign="BASELINE" align="RIGHT" nowrap="nowrap">To: </th>
<td>Dave Gaskell <a class="moz-txt-link-rfc2396E" href="mailto:gaskelld@jlab.org"><gaskelld@jlab.org></a></td>
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<br>
<br>
<pre>Hi Dave,
Attached is the plot of hgcer efficiency. Here I was selecting my sample i.e should by putting cal>0.9 && cer>2 and my did by
putting cal>0.9 && cer>2 && hgcer>2 . I used carbon rum from each momentum setting to get this efficiencies.
Please let me know if I need to do something more.
Yours,
Abishek
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