<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><br><div>Begin forwarded message:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1);"><b>From: </b></span><span style="font-family:'Helvetica'; font-size:medium;">Paul Mattione <<a href="mailto:pmatt@jlab.org">pmatt@jlab.org</a>><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1);"><b>Date: </b></span><span style="font-family:'Helvetica'; font-size:medium;">March 8, 2014 3:02:55 PM EST<br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1);"><b>To: </b></span><span style="font-family:'Helvetica'; font-size:medium;">Yordanka Ilieva <<a href="mailto:jordanka@jlab.org">jordanka@jlab.org</a>><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1);"><b>Cc: </b></span><span style="font-family:'Helvetica'; font-size:medium;">Pawel Nadel-Turonski <<a href="mailto:turonski@jlab.org">turonski@jlab.org</a>><br></span></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;"><span style="font-family:'Helvetica'; font-size:medium; color:rgba(0, 0, 0, 1);"><b>Subject: </b></span><span style="font-family:'Helvetica'; font-size:medium;"><b>I Should've Noticed This Sooner</b><br></span></div><br><div>Run 53580, hits in DC Sector 5 (notice hole in front in superlayers 3 & 4):<br><br><a href="https://clasweb.jlab.org/rungroups/g13/wiki_secure/index.php/File:DCHoles_LayerVsWire_Sector5.gif">https://clasweb.jlab.org/rungroups/g13/wiki_secure/index.php/File:DCHoles_LayerVsWire_Sector5.gif</a><br><br>Run 53580, DC wire efficiencies (not efficiency is ~50% in this region instead of 0%): <br><br>https://clasweb.jlab.org/rungroups/g13/wiki/index.php/File:DCEfficiency2D_Sector5_Page2_53850.jpg<br><br>And while these regions are grouped together in the database (thanks Yordanka), they are assigned efficiencies of 96% and 87% (since I guess this doesn't show up for all run #'s?). Thus, tracks in this region are only barely rejected in MC, and there is a huge mismatch with data (See pink-region in attached histogram: is plotting relative Hit-based track efficiency (MC - Data) / Data. <br><br> - Paul<br><br><img id="a5721b60-0a67-4c69-ae1b-ad024a99e1e5" height="528" width="954" apple-width="yes" apple-height="yes" src="cid:E50EB4D6-D4A1-429C-B486-652E3BD93CA5"></div></blockquote></div><br></body></html>