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</style><article id="node-1222216" 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/4149179" rel="bookmark">Owl shift summary</a>
</h1>
</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/4149179/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/4149179/delete?destination=email/send">Delete</a></li></ul></div>
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<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/4149179" class="lognumber" data-lognumber="4149179">4149179</a>. Submitted by <a href="https://logbooks.jlab.org/user/hattawy">hattawy</a> on <time datetime="2023-03-14T00:02:47-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1678762967&end_date=1678770167&book=HBLOG">Tue, 03/14/2023 - 00:02</a></time>. </p>
<p class="last-update">
Last updated on <time datetime="2023-03-14T08:02:09-0400" pubdate="pubdate">Tue, 03/14/2023 - 08:02</time></p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hblog">HBLOG</a></td></tr><tr><th>Entry Makers: </th><td>hattawy, vsaonau</td></tr></table></div>
<div class="logentry node-content">
<p>00:00 Continue run 17770 with 30M triggers currently.<br />
00:33 BMT HV sec3 L4 strip tripped. Turning off and back on.<br />
00:48 BMT HV sec2 L1 strip tripped. Turning off and back on.<br />
01:00 BMT HV sec2 L1 strip tripped. Turning off and back on.<br />
01:04 BMT HV sec2 L1 strip tripped. Called Yuri and he instructed to reduce Vset from 480 V to 470 V and increase Iset from 2 uA to 3 uA.<br />
02:24 Ended run 17770 with 97M triggers as the beam started to trip.<br />
02:27 Starting run 17771.<br />
02:28 BMT HV sec3 L4 strip tripped. Turning off, reducing Vset from 500 V to 480 V and increased Iset from 2 to 3 uA and turning back on.<br />
02:57 There was a connection problem that kicked Ivan (remote worker) from the VNC and we couldn't access the logbooks. Connection with Google, Zoom and others was normal though. It lasted for about 5 minutes and it got fixed.<br />
04:27 Called MCC to correct beam position on 2H01 x to -1 mm, because it was centered around -1.1 mm. It got better.<br />
04:54 Called MCC to correct beam current, from 4.4 to 4 nA.<br />
05:36 MCC called us, saying we won't have beam for the next 20 to 30 minutes. It had been tripped since around 05:11. End of run 17771 with 74M events.<br />
05:57 MCC called, beam is back. starting run 17772.<br />
07:19 There was an alarm on FTC gas flow, but it disappeared after a minute. (B_DET_FTC_INTLK_FLOW)<br />
07:30 It appeared again, we couldn't contact Raffaella, we called Eugene and he said it's likely that the work on other part of the gas system is causing this, and we should do nothing. It disappeared after 15 minutes</p>
<p>Shift summary:</p>
<p>ABU: 365 minutes<br />
BNA: 115 minutes<br />
Total events: 171M triggers</p>
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