[Hallb-engineering] [Revised Logentry] Follow-up Re: lowering Buffer Dewar Level to aid in Target connection

kashy at jlab.org kashy at jlab.org
Thu Sep 28 05:30:03 EDT 2023

Logentry Text:
Minor tweaking of supply valve several times over night.
The dewar level fell only 4%
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.


This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/4188687
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