<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
<!--
html{color:#555555;}body{line-height:1.5;font-family:'Trebuchet MS','Helvetica Neue',Arial,Helvetica,sans-serif;font-size:87.5%;}h1{font-size:1.6em;}h2.field-label{display:inline-block;font-size:1em;padding-right:5px;min-width:10em;margin:0.3em;}.problem_report{line-height:1.5;max-width:60em;}fieldset.problem_report.resolved
legend{background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAy0lEQVQ4jWP8//8/AyWAiZACd3f3/xYWFrht+f//P1a84t3e/0obff4rbfT5D1GGXR0LuoEr3+/7X3W4n2gvwA0gVSOKAcqbfPGGpImJCU45JgYGBoa7fpsZ22wLSbadgYGBgRE9GrF55Vf2BYbHjx8zYjWB0ljAcAGGExkZ/0MtwuoCggmJEBh4AzBS4pMnT/7fuXOH4dKlSwwnT56EiwcGBv43MDBgMDExYdDX12eQkZGBhAlyiC5YsOA/AwMDUXjLli3/iYoFQgAA+pSxZrXofD0AAAAASUVORK5CYII=);background-repeat:no-repeat;padding-left:18px;}fieldset.problem_report.needs_attention
legend{background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAA9ElEQVR42sWTvUoDQRSFv9wMKWxSBVmzdhZJIwTWv9pyLWxTpbE1kBeJPoLxBazzBgGFKNqlHXAhsITUw1y7sMpmjER0YJrDPWcO556BPzhjYPJjlhfT82LUpxcK6Lo5U0JMgcu56tXy7BQajeBDpkAcAEdz1W6uyrLdYieK2DMmKCArcqczpH/ddc0msy+OkyQJC4h3N0ynx+Q5ALtUNs5q5U+8e+R+VPFi4kjk3NZqd++qUK+TZVnYwSfAOyvejeLXt/2qVG/dYoG1dqseBNco27bs/wXKWhIDB8AhcFLAH4Bn4Al4AUqT7RVC++6mv/JVPwDi3VGzomYvyAAAAABJRU5ErkJggg==);background-repeat:no-repeat;padding-left:18px;}.problem_report div.field-items{display:inline-block;}div.date-vitals p{font-size:87.5%;}a{text-decoration:none;}.Readme a:link,.Readme a:visited,.Readme
a:active{color:red;}
-->
</style>
</head>
<body id="mimemail-body" class="elog-logentry-notify">
<div id="center">
<div id="main">
<style>
<!--/*--><![CDATA[/* ><!--*/
div.field-vitals{
margin: 0.5em 0;
}
div.field-vitals .field-type-taxonomy-term-reference {
margin: 0.1em 0;
}
article.comment {
padding-left: 10px;
}
article.comment.odd {
background-color: #EEEEEE;
}
article.comment.even {
background-color: #DDDDDD;
}
div.node-content.logentry table{
width: auto;
border-collapse: collapse;
border-spacing: 0;
border-width: 1px;
}
div.node-content.logentry th{
border: inherit;
}
div.node-content.logentry blockquote{
background-color: #FFFFFF;
}
div.node-content.logentry caption{
font-size: 1em;
font-weight: normal;
}
table.field-vitals{
margin-top: 1em;
margin-bottom: 1em;
font-size: 87.5%;
}
table.field-vitals th{
vertical-align: middle;
text-align: left;
width: 15%;
padding: 0.1em;
}
table.field-vitals td{
vertical-align: middle;
text-align: left;
width: auto;
padding: 0.1em;
}
table.field-vitals td li {
margin-left: 0;
list-style-type: none;
list-style-image: none;
}
table.downtime {
width: 30em;
margin-bottom: 1em;
border: 1px black dotted;
}
table.downtime th {
text-align: center;
}
table.downtime td {
text-align: center;
}
tr.caption th {
border-bottom: none;
}
table.downtime tfoot{
background-color:#EEEEEE;
}
div.field-name-body{
margin: 1em 0;
font-size: 110%;
}
div.date-vitals p{
margin: .1em 0;
}
article div.ctools-collapsible-container{
margin-left: -5px;
clear: both;
}
#comment-form{
margin-left: 5px;
border: graytext outset medium;
-moz-border-radius: 15px;
border-radius: 15px;
padding: 1em;
}
div.comments-form-box {
margin-top: 2em;
margin-bottom: 5em;
}
h3.comment-title {
/* display: none; */
}
p.author-datetime{
font-weight: bold;
}
/*--><!]]>*/
</style><article id="node-673436" class="node node-logentry contextual-links-region article ia-n clearfix" role="article"><header class="node-header"><h1 class="node-title">
<a href="https://logbooks.jlab.org/entry/3600543" rel="bookmark">RC Daily Update</a>
</h1>
</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3600543/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3600543/delete?destination=email/send">Delete</a></li></ul></div>
<div class="date-vitals">
<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/3600543" class="lognumber" data-lognumber="3600543">3600543</a>. Submitted by <a href="https://logbooks.jlab.org/user/jones">jones</a> on <time datetime="2018-09-29T09:55:04-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1538225704&end_date=1538232904&book=HCLOG">Sat, 09/29/2018 - 09:55</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hclog">HCLOG</a></td></tr><tr><th>Tags: </th><td><a href="https://logbooks.jlab.org/tag/analysis">Analysis</a></td></tr><tr><th>Entry Makers: </th><td>jones</td></tr></table></div>
<div class="logentry node-content">
<p>Below is info from yesterday's RC meeting. We finished up the optics check out of the HMS/SHMS at around 4:30 yesterday.</p><p>Started the LH2 elastic data taken. Since the pass change, beam has been unstable and we have not been able to</p><p>get reliable stable high current running. As of 9:00 on Sat, we have finished 4 of the 8 elastic single arm settings.</p><p> </p><p><strong>Main issue is with HMS Dipole LN2 level.</strong> <a href="https://logbooks.jlab.org/entry/3600022">https://logbooks.jlab.org/entry/3600022</a></p><p>The users have to manual change the valve for JT3. There is a alarm to let you know if it get outside its limits</p><p>but it is best to monitor it so that try one can keep it from reaching extremes.</p><p> </p><p> </p><p>Since we are still in the commissioning phase, we will meet this afternoon at 4:30pm</p><p>in the second floor counting house: <a href="https://hallcweb.jlab.org/wiki/index.php/RC_daily_meetings_and_daily_run">https://hallcweb.jlab.org/wiki/index.php/RC_daily_meetings_and_daily_run</a></p><p> </p><p>*''Status''</p><ol><li>**Yesterday the HMS quad work was completed by about 1pm and we started the optics study of HMS/SHMS at high momentum.</li><li>**Beam was bad until around 6pm when MCC had solved the problem of the many trips coming from Hall B beam.</li><li>** When changing to set the HMS at 6 GeV , The HMS Q3 would not stay at a given set current. This put into doubt the the higher momentum HMS optics data (taken at 6.6 and 6.3).</li><li>** MCC was able to deliver up to 60uA on the owl shift. Given problem with HMS, decided to do the BCM which was completed. <a href="https://logbooks.jlab.org/entry/3599568">https://logbooks.jlab.org/entry/3599568</a></li><li>**After BCM data was taken , then continued with the SHMS optics which was completed.</li><li>**Turned on EDTM pulser for BCM calib data. Left it on.</li><li>**The Hall went into controlled access around 8:30 for work on the HMS Q3. Found that the opto-isolator was not pushed in all the way.</li><li>**Around 9:00, MCC started the pass change for Hall A.</li><li>**Around noon, started to receive beam and restarted the optics study for HMS ( repeated some SHMS). finsihed around 4:20.</li><li>**Updated the EPICS BCM names and calibrations <a href="https://logbooks.jlab.org/entry/3599765">https://logbooks.jlab.org/entry/3599765</a></li><li></li></ol><p><br />*''Reports''</p><ol><li>**SHMS Cerenkov <a href="https://logbooks.jlab.org/entry/3599771">https://logbooks.jlab.org/entry/3599771</a></li><li>** SHMS PID check <a href="https://logbooks.jlab.org/entry/3599464">https://logbooks.jlab.org/entry/3599464</a></li></ol><p><br />*''Issues''</p><ol><li>** Steve Wood to comment on importance of watching closely the GUI and TV screen when moving spectrometers.</li><li>** Changing the attenuator of the SHMS Cer sum that is used to monitor that leg of the trigger for 0.3 to 1.0 . <a href="https://logbooks.jlab.org/entry/3599768">https://logbooks.jlab.org/entry/3599768</a></li><li>** HMS UPS is bad. Jumpered interlock. <a href="https://logbooks.jlab.org/entry/3599763">https://logbooks.jlab.org/entry/3599763</a></li><li>** Gas shed <a href="https://logbooks.jlab.org/entry/3599543">https://logbooks.jlab.org/entry/3599543</a></li></ol><p><br /><br /></p> </div>
<div class="attachment-box">
</div>
</article> </div>
</div>
</body>
</html>