<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<br>
<div class="moz-forward-container"><br>
<br>
-------- Original Message --------
<table class="moz-email-headers-table" border="0" cellpadding="0"
cellspacing="0">
<tbody>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Subject:
</th>
<td>Re: thoughts after PID session</td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Date: </th>
<td>Mon, 8 Oct 2012 14:33:41 -0400</td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">From: </th>
<td>Matthew Shepherd <a class="moz-txt-link-rfc2396E" href="mailto:mashephe@indiana.edu"><mashephe@indiana.edu></a></td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">To: </th>
<td>Michael Williams <a class="moz-txt-link-rfc2396E" href="mailto:mwill@mit.edu"><mwill@mit.edu></a></td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">CC: </th>
<td>Curtis Meyer <a class="moz-txt-link-rfc2396E" href="mailto:cmeyer@cmu.edu"><cmeyer@cmu.edu></a>, Paul Mattione
<a class="moz-txt-link-rfc2396E" href="mailto:pmatt@jlab.org"><pmatt@jlab.org></a>, "Meyer Curtis A."
<a class="moz-txt-link-rfc2396E" href="mailto:curtis.meyer@cmu.edu"><curtis.meyer@cmu.edu></a>, "Ito Mark M."
<a class="moz-txt-link-rfc2396E" href="mailto:marki@jlab.org"><marki@jlab.org></a>, "Eugene Chudakov"
<a class="moz-txt-link-rfc2396E" href="mailto:gen@jlab.org"><gen@jlab.org></a>, Justin Stevens
<a class="moz-txt-link-rfc2396E" href="mailto:jrsteven@mit.edu"><jrsteven@mit.edu></a>, Yi Qiang
<a class="moz-txt-link-rfc2396E" href="mailto:yqiang@jlab.org"><yqiang@jlab.org></a>, Elton Smith
<a class="moz-txt-link-rfc2396E" href="mailto:elton@jlab.org"><elton@jlab.org></a></td>
</tr>
</tbody>
</table>
<br>
<br>
<pre>On Oct 8, 2012, at 2:02 PM, Michael Williams wrote:
> Paul, did I hear correctly that material interactions are not included in the study so far? Pretty important ... if not b/c of time constraints so far that's totally understandable ... but pretty important to have this in before making any decisions (or showing to any external people).
It depends... if we are going with either the LHCb or gas threshold design, we've studied all the material interactions that matter. Both of these are outside the tracking volume so the only important thing is photon reconstruction efficiency in the forward calorimeter. We have looked at this for those two designs.
Matt
</pre>
<br>
<br>
</div>
<br>
</body>
</html>