<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body dir="auto">
<div dir="ltr"></div>
<div dir="ltr">The trip limit is at 350uA. It draws about 280uA with short and no beam. I expect it to draw something a bit higher than that with beam (10-20uA). I think it’s increasing because it did not fully short. That’s why I asked the shift crew to call
again if it trips. </div>
<div dir="ltr"><br>
<blockquote type="cite">On May 4, 2024, at 8:18 PM, Michael Kohl <kohlm@jlab.org> wrote:<br>
<br>
</blockquote>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="auto">Dear Holly or other GEM experts,</div>
<div dir="auto"><br>
</div>
<div dir="auto">How much current is L6M23-G3 allowed to draw? Imon has been 280 since they were turned on again, and is now at 320, i.e. about 30 times the high values of other high channel. Not sure what the trip threshold is presently set to.</div>
<div dir="auto"><br>
</div>
<div dir="auto">I note that the trip had happened suddenly around 6:15pm when the beam tripped and also killed the DAQ then.</div>
<div dir="auto"><br>
</div>
<div dir="auto">--Michael</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div id="ms-outlook-mobile-signature" dir="auto">
<div><br>
</div>
Get <a href="https://aka.ms/AAb9ysg">Outlook for Android</a></div>
<div id="mail-editor-reference-message-container" dir="auto"><br>
<hr style="display:inline-block;width:98%">
<div id="divRplyFwdMsg" style="font-size: 11pt;"><strong>From:</strong> Sbs_gems <sbs_gems-bounces@jlab.org> on behalf of hszumila--- via Sbs_gems <sbs_gems@jlab.org><br>
<strong>Sent:</strong> Saturday, May 4, 2024 7:25:07 PM<br>
<strong>To:</strong> sbs_gems@jlab.org <sbs_gems@jlab.org><br>
<strong>Subject:</strong> [Sbs_gems] [Revised Logentry] GEM L6M23 trip with pending short<br>
</div>
<br>
<div id="center">
<div id="main">
<h1 class="node-title" style="font-size: 1.6em;"><a href="https://logbooks.jlab.org/entry/4296485" rel="bookmark" style="text-decoration: none;">GEM L6M23 trip with pending short</a>
</h1>
<div class="contextual-links-wrapper">
<ul class="contextual-links">
<li><a href="https://logbooks.jlab.org/entry/4296485/edit?destination=email/send" style="text-decoration: none;">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/4296485/delete?destination=email/send" style="text-decoration: none;">Delete</a></li></ul>
</div>
<div class="date-vitals">
<p class="author-datetime" style="font-size: 87.5%;margin: 0.1em 0px;font-weight: bold;">
Lognumber <a href="https://logbooks.jlab.org/entry/4296485" class="lognumber" data-lognumber="4296485" style="text-decoration: none;">
4296485</a>. Submitted by <a href="https://logbooks.jlab.org/user/hszumila" style="text-decoration: none;">
hszumila</a> on <time datetime="2024-05-04T19:20:35-0400"><a href="https://logbooks.jlab.org/entries?start_date=1714861235&end_date=1714868435&book=HALOG" style="text-decoration: none;">Sat, 05/04/2024 - 19:20</a></time>.
</p>
<p class="last-update" style="font-size: 87.5%;margin: 0.1em 0px;">Last updated on
<time datetime="2024-05-04T19:21:13-0400">Sat, 05/04/2024 - 19:21</time></p>
<table class="field-vitals" style="margin-top: 1em; margin-bottom: 1em; font-size: 87.5%;">
<tbody>
<tr>
<th style="vertical-align: middle; text-align: left; width: 15%; padding: 0.1em;">
Logbooks: </th>
<td style="vertical-align: middle; text-align: left; width: auto; padding: 0.1em;">
<a href="https://logbooks.jlab.org/book/halog" style="text-decoration: none;">HALOG</a></td>
</tr>
</tbody>
</table>
</div>
<div class="logentry node-content">
<p>Got a call from the shift crew that L6M23 had tripped. It appears to have shorted or at least to have a pending short on G3 (G2 was known). I ramped it back on with higher trip limits. It is still wandering a bit which makes me think the short isn't completely
shorted, but it seems to be performing here. The shift crew should call back if it trips again so we can study it.
</p>
<p>Shown here in orange is G3, blue is the beam current and green is G2.</p>
</div>
<div class="attachment-box">
<div class="image-wrapper"><img class="image-style-plentybig" src="https://logbooks.jlab.org/files/styles/plentybig/public/2024/05/4296485/Screen%20Shot%202024-05-04%20at%207.16.34%20PM.png" width="960" height="506" alt="" style="" data-unique-identifier=""></div>
<div class="image-wrapper"><img class="image-style-plentybig" src="https://logbooks.jlab.org/files/styles/plentybig/public/2024/05/4296485/Screen%20Shot%202024-05-04%20at%207.06.59%20PM.png" width="960" height="238" alt="" style="" data-unique-identifier=""></div>
</div>
</div>
</div>
<br>
</div>
</div>
</blockquote>
</body>
</html>