[Esr-users] Hall A heat bubble causing disruption for ESR

[Jessie Butler]

The IOC for the right HRS in Hall A lost communication and was likely the cause of this issue. We have since rebooted the IOC and brought the right arm back online. We currently don't know what caused the IOC to lock-up but we (Jack, Andrew & Jessie) are still investigating it... All Hall A magnets have returned to normal liquid levels and lead flows. Sorry for the inconvenience. 

Thanks,

Jessie Butler 
Jefferson Lab 
Physics/Hall-A Work Coordinator 
757-269-5544 

EXCELLENCE IS OUR STANDARD; 
PERFECTION IS OUR GOAL.

----- Original Message -----
From: "Christopher Perry" <cperry at jlab.org>
To: esr-users at jlab.org
Sent: Saturday, January 13, 2018 7:02:45 AM
Subject: [Esr-users] Hall A heat bubble causing disruption for ESR

It looks like Right D1 at Hall A may have quenched (see attached graph)causing a heat bubble to return to ESR, which disrupted liquid levels in the other halls.  All liquid levels are recovering with the exception of the right dipole.

Chris Perry
Mechanical Engineer
Cryogenics Group
Thomas Jefferson National Accelerator Facility
12000 Jefferson Ave, Newport News, VA 23606
cperry at jlab.org
(757) 269-6157

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