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<a href="https://logbooks.jlab.org/entry/4325859" rel="bookmark">Follow-up Re: Follow-up Re: Follow-up Re: Hall B dewar disconnect and 4K circuit purification check and cleanup</a>
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<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/4325859" class="lognumber" data-lognumber="4325859">4325859</a>. Submitted by <a href="https://logbooks.jlab.org/user/kashy">kashy</a> on <time datetime="2025-01-11T12:13:17-0500" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1736611997&end_date=1736619197&book=HBLOG&book=HBTORUS&book=CLOG">Sat, 01/11/2025 - 12:13</a></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/hbtorus">HBTORUS</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/4325766">4325766 - Follow-up Re: Follow-up Re: Hall B dewar disconnect and 4K circuit purification check and cleanup</a></td></tr>
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<p>At 06:20 this morning I increased the flow rate of warmu flow to 0.75g/s by allowing the pressure at PT8512 go to 3 atm. The 4K circuit in the DBX is all above 285K. Hopefully by Monday moring the entire circuti will be warm. We will need to determine if we do investigation of PV8512S. So far no significatn contamination has been observed.</p>
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