[Sbs_gems] [New Logentry] New old (BB) Gas system is revived and connected to regulators in the Hall

[chandan at jlab.org]

Logentry Text:
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We (Lars and I) moved the old (BB side) gas line close to the new gas rack location in the hall.
The old gas system (previously known as the BB side) has been revived.  The line is flushed for three hours.
We have modified the gas distribution in the hall to include the Old gas system.
Fig. 1 shows the schematic before and Fig. 2 after the modification.
With the current modification, the new gas system (previously called the SBS gas system) can provide gas for both rack 1 and rack 2 distribution.
Alternatively, the new system can provide gas to the chambers connected to rack 1 and the old system can provide gas to the chambers connected to rack 2.

The whole system is flushed and is ready for use.
Currently, due to budget restrictions, we are flowing boil-off N2 from a liquid Nitrogen dewar connected to the new system to all the GEM detectors in the Hall.

Thanks to Lars, Asar, and Ching for their help and coordination.





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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/4317270
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