<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-704198" 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/3631299" 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/3631299/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3631299/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/3631299" class="lognumber" data-lognumber="3631299">3631299</a>. Submitted by <a href="https://logbooks.jlab.org/user/rmontgom">rmontgom</a> on <time datetime="2018-11-25T10:38:05-0500" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1543156685&end_date=1543163885&book=HCLOG">Sun, 11/25/2018 - 10:38</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>Entry Makers: </th><td>rmontgom</td></tr></table></div>
<div class="logentry node-content">
<p>Summary/status:<br />
- Swing yesterday completed production data taking on Group 7 (Q2 = 3.98, x = 0.5, pi+).<br />
- There was a ~1hr beam down time due to RF zone 1L24 dropping out of HV (DTM ID 5521) but other than that beam has overall been better (<a href="https://logbooks.jlab.org/entry/3631291">https://logbooks.jlab.org/entry/3631291</a>). SHMS/HMS angles and momenta were changed for moving to Group 17 (Q2 = 5.5, x = 0.5). Data taking on this group also included an SHMS polarity change. Owl crew completed Group 17 and moved to 18.<br />
- During owl shift the SHMS vacuum started dropping rapidly down to 1.55e-3 (<a href="https://logbooks.jlab.org/entry/3631178">https://logbooks.jlab.org/entry/3631178</a>). This required an escorted access during which SHMS forepump was turned back on and SHMS turbo controller was reset (<a href="https://logbooks.jlab.org/entry/3631199">https://logbooks.jlab.org/entry/3631199</a>). This was caused by the brownouts on 11/24. It would be good to discuss adding SHMS/HMS vacuum numbers into alarm handler, shift checklist etc and other checklist items before locking up swing shift Tuesday in case anything else has been affected by the brownouts.<br />
- The day crew are currently completing Group 18 (Q2=5.5, x=0.5, z=0.6, pi+ and pi-), which will be followed by 3 (Q2=4, x=0.4, pi+) and 4 (Q2=4, x=0.4, pi-). The lowest z settings of groups 3 and 4 may be dropped due to time constraints.</p>
<p>RC Meeting:<br />
- We have no planned RC meetings until Monday. Unless there is a special request.</p>
<p>Notices in effect for shift crews:<br />
* NB If the HV trips for SHMS S1Y5B contact Simona M. '''DO NOT change the HV from the nominal value!'''<br />
* Shift leaders, please fill out the check list once per shift!<br />
* It is no longer required to fill out the standard.kinematics file online, it is now done automatically<br />
* Split the large desired charge between multiple runs (~1 hour per run)<br />
* Listed currents are estimates. For runs at less than 70uA, increase current until SHMS singles rates are between 450k-500k.<br />
* Remember to check trigger pre-scales before runs (PS6=0 all the time, adjusting PS4 to give at least 100Hz, and no more than 200Hz, of HMS singles, PS1=PS2=PS3=PS5=-1).<br />
* Check that the pre-scaler gui is active and hasn't frozen/doesn't need re-started, especially between target changes<br />
* How-to power cycle PLC I/O chassis: <a href="https://logbooks.jlab.org/entry/3625862">https://logbooks.jlab.org/entry/3625862</a>, <a href="https://logbooks.jlab.org/entry/3625900">https://logbooks.jlab.org/entry/3625900</a></p>
<p>Planned accelerator configuration changes:<br />
Monday, Nov 26: Energy change to 1.86 GeV/pass and move to 500 MHz laser. Hall will go to restricted access Monday morning and aim is to be locked up again Tuesday Swing. There has been a separate e-mail/log entry about shift updates. So far these changes still stand but we will know more Tue/Wed about expected beam delivery - stay tuned for updates.</p>
<p>Planned accesses to the Hall:<br />
Monday, Nov 26: Work in Hall should be coordinated with Walter K. Aerogel change by V. Berdnikov (~8 hours duration Mon). HGC work by B. Sawatzky and University of Regina team. D. Meekins will investigate target loop 3 JT valve issue. V. Kumar (Regina group) walkthrough Monday morning.<br />
Tuesday, Nov 27: installation of brushes near the spectrometer wheels for S. Lassiter (originally planned for Tue/Wed).<br />
Please let me know any other plans for work in the Hall Mon/Tue.</p>
<p>Special requests:<br />
Harp scan at 3H07A and 3H07B with raster off to address possible issues with harp (<a href="https://logbooks.jlab.org/entry/3624463">https://logbooks.jlab.org/entry/3624463</a>). Has to be done before shut down in Dec.</p>
</div>
<div class="attachment-box">
</div>
</article> </div>
</div>
</body>
</html>