[Esr-users] HAll C cool down started

[Dave Kashy]

Thanks Steve and Chris,
Good luck. Let me know if I can help.
Dave


----- Original Message -----
From: "Steve Lassiter" <lassiter at jlab.org>
To: "esr-users" <esr-users at jlab.org>
Sent: Thursday, July 19, 2018 11:40:40 AM
Subject: [Esr-users] HAll C cool down started

Hello,

 Cryo opened the 4K He supply valve to hall C, ~9:30am, and we are in the process of slowly cooling down the main transfer line and the SHMS plumbing. The supply flow meter's, CFI6711C, calibration appears to be off.  Warm return flow suggests that HallC is taking ~5 to 6 g/s.

The HMS PLC is being updated and those valves are in manual mode. Once the update is finished and verified, the HMS lines will be cooled.

Magnets temps ranged from 88K to 115K before cool down started.

Steven
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