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</style><article id="node-1261732" 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/4188687" rel="bookmark">Follow-up Re: lowering Buffer Dewar Level to aid in Target connection</a>
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</header><div class="contextual-links-wrapper"><ul class="contextual-links"><li><a href="https://logbooks.jlab.org/entry/4188687/edit?destination=email/send">Edit</a></li><li><a href="https://logbooks.jlab.org/entry/4188687/delete?destination=email/send">Delete</a></li></ul></div>
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Lognumber <a href="https://logbooks.jlab.org/entry/4188687" class="lognumber" data-lognumber="4188687">4188687</a>. Submitted by <a href="https://logbooks.jlab.org/user/kashy">kashy</a> on <time datetime="2023-09-28T05:25:12-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1695889512&end_date=1695896712&book=HBLOG&book=CLOG">Thu, 09/28/2023 - 05:25</a></time>. </p>
<p class="last-update">
Last updated on <time datetime="2023-09-28T05:25:59-0400" pubdate="pubdate">Thu, 09/28/2023 - 05:25</time></p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hblog">HBLOG</a> <a href="https://logbooks.jlab.org/book/clog">CLOG</a></td></tr><tr><th>References: </th><td><a href="https://logbooks.jlab.org/entry/4188392">4188392 - lowering Buffer Dewar Level to aid in Target connection</a></td></tr></table></div>
<div class="logentry node-content">
<p>Minor tweaking of supply valve several times over night.<br />
The dewar level fell only 4%<br />
This morning I fully opened the 4K return (back pressure valve EV8210BP to reduce the enthalpy of the helium but the return pressure of the cold box and the return pressure drop in the line/system only allowed the pressure to drop from 1200mBar to 1080mBar.</p>
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