<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Dear Colleagues,</div><div class=""><br class=""></div><div class="">We had a successful weekend of mostly production running with some time used for a few special studies.</div><div class=""><br class=""></div><div class="">We used 42 hours of beam during the 8 weekend shifts, accumulating ~1250 million triggers for PARA, ~1550 million triggers for PERP and ~540 million triggers unpolarized. Special studies included some trigger tuning, data with the TRD prototype, and some further study of the relative luminosity of the PARA and PERP configurations.</div><div class=""><br class=""></div><div class="">The relative luminosity difference is still not completely understood. Overnight we ran with 200 nA beam in the PARA configuration achieving only a 24 kHz event rate while 160 nA beam in the PERP configuration gave a 29 kHz event rate. </div><div class=""><br class=""></div><div class="">We will have the usual run coordination meeting at 8:45 this morning to discuss our final week of running.</div><br class=""><div class="">
<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Best,<br class="">Mark Macrae Dalton</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""></div><br class="Apple-interchange-newline">
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