<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-867510" 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/3794541" rel="bookmark">RC update</a>
</h1>
</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/3794541/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/3794541/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/3794541" class="lognumber" data-lognumber="3794541">3794541</a>. Submitted by <a href="https://logbooks.jlab.org/user/chandan">chandan</a> on <time datetime="2020-02-29T12:56:51-0500" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1582995411&end_date=1583002611&book=HALOG">Sat, 02/29/2020 - 12:56</a></time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/halog">HALOG</a></td></tr><tr><th>Entry Makers: </th><td>chandan</td></tr></table></div>
<div class="logentry node-content">
<p>Dear Collaborators,</p>
<p>Request to sign up shifts:<br />
We have some owl shift leader and/or target operator opening starting for Sunday Owl.<br />
Please consider to sign up for these shifts.</p>
<p>Update last 24 hours:<br />
Feb 28 - day shift:<br />
8:30 - 12:00 - MCC performed software test for the EasyButton to deliver beam safely. Around 12:30 pm back to production with Ca48 target. Accumulated good charge ~0.56C.</p>
<p>Feb 28 - swing shift:<br />
Checked detector alignment.<br />
MCC changed target ion chamber set point without consulting shift crew (<a href="https://logbooks.jlab.org/entry/3794009">https://logbooks.jlab.org/entry/3794009</a>).<br />
Resume production ~6:00PM. Experience excessive trips on 1L11-1&2 cavity.<br />
Crew chief stopped beam to Hall A and told me that Hall A is the problem (<a href="https://logbooks.jlab.org/entry/3794062">https://logbooks.jlab.org/entry/3794062</a>)!!<br />
But I can't find evidence (from logbooks) that says Hall A is the problem!!<br />
MCC contacted RF-on-call and resolved the excessive trip issue.<br />
Around 20:45 - started production.<br />
Performed PITA scan on 48Ca target.<br />
Total charge accumulated during this shift: 0.53C</p>
<p>Feb 29 - Owl Shift:<br />
Continued production till 1:05 am when septum magnet trip. It could not be recovered remotely. Called Tech-on-call (Bob). Bob took escorted access to reset the power supply - no success. As per Bob's suggestion I called Jack. I was not able to reach Jack. Decided to wait till morning.<br />
Kent Paschke and Juan Carlos came up with a plan for Compton Polarimeter systematic studies with 10 micro Amp beam. Juan Carlos and Adam Zec executed the plan.<br />
At 7:00 am called Jack. He is already aware of this problem and planning to come within about an hour and requested for controlled access.<br />
Accumulated charge:0.36C</p>
<p>Feb 29 - Day Shift:<br />
Hall surveyed and in controlled access - 9:00 am.<br />
Jack fixed the septum power supply ~ 11:30 am.<br />
Back to production ~ 12:30 pm.<br />
The plan is continuing production.</p>
<p>Chandan Ghosh<br />
(Hall A Run Coordinator)</p>
</div>
<div class="attachment-box">
</div>
</article> </div>
</div>
</body>
</html>