<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="">Hi,<div class="">when I started my swing shift yesterday the scalers were all at zero but there was no beam. I called Andrey Kim before we stated the data taking and he recycled the IOC. At that point all scalers where all OK</div><div class="">Indeed I wanted to understand why the scalers stop reading without any apparent problem</div><div class=""><br class=""></div><div class="">patrizia</div><div class=""><br class=""><div apple-content-edited="true" class="">
<div style="color: rgb(0, 0, 0); letter-spacing: 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=""># Patrizia Rossi<br class=""># Jefferson Lab <br class=""># 12000 Jefferson Avenue<br class=""># Suite 5<br class=""># Newport News VA 23606 (USA)<br class=""># e-mail: <a href="mailto:rossi@jlab.org" class="">rossi@jlab.org</a><br class=""># phone: +1 (757) 269 7740<br class=""># fax: + 1 (757) 269 5800</div><div style="color: rgb(0, 0, 0); letter-spacing: 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=""># cell: +1 (757) 528 7606<br class=""><br class=""><br class=""><br class=""></div>
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<br class=""><div><blockquote type="cite" class=""><div class="">On 22/feb/2018, at 08:22, Tyler Lemon <<a href="mailto:tlemon@jlab.org" class="">tlemon@jlab.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class=""><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;" class=""><div class="">Hello,<br data-mce-bogus="1" class=""></div><div class=""><br data-mce-bogus="1" class=""></div><div class="">DSG noticed this morning that there is there is a group of three PMTs on the scaler map EPICS screen that are not updating. They have all been at zero for a few hours this morning. Attached is a screenshot with the three PMT scalers as zero. <br data-mce-bogus="1" class=""></div><div class=""><br data-mce-bogus="1" class=""></div><div class="">The PMTs in question are PMT 182, 183, and 184. They all look to be on the same electronic board (tile 66) that is read out in SSP slot 5, fiber 1. The temperatures for this board are still being read.<br data-mce-bogus="1" class=""></div><div class=""><br data-mce-bogus="1" class=""></div><div class="">Scalers for PMTs not updating for long periods until the IOC is rebooted or something else is done seems to be a common occurrence. </div><div class=""><br data-mce-bogus="1" class=""></div><div class="">What would be causing the scalers to stop updating while the temperatures are still read?</div><div class=""><br data-mce-bogus="1" class=""></div><div class="">Best regards,<br data-mce-bogus="1" class=""></div><div class="">Tyler<br data-mce-bogus="1" class=""></div></div></div><span id="cid:571C01B1-05A6-44C1-B429-B360B2431A80@jlab.org"><RICH scalers one tile zero 2018-02-22.JPG></span>_______________________________________________<br class="">Dsg-rich mailing list<br class=""><a href="mailto:Dsg-rich@jlab.org" class="">Dsg-rich@jlab.org</a><br class="">https://mailman.jlab.org/mailman/listinfo/dsg-rich<br class=""></div></blockquote></div><br class=""></div></body></html>