[Esr-users] [New Logentry] Follow-up Re: HMS Q2

[Denny Insley]

Good afternoon,
  
    I have looked for leaks in Hall B and found none. The leads are a little harder to check because of icing and electrical shielding so if you have a handheld helium detector that I can snoop around with I would be glad to do so.


Thanks
Denny

----- Original Message -----
From: "Heidi Fansler" <fansler at jlab.org>
To: esr-users at jlab.org
Sent: Tuesday, January 2, 2018 1:20:25 PM
Subject: Re: [Esr-users] [New Logentry] Follow-up Re: HMS Q2

Jonathan, 

Hall A made NO changes this morning, and we found no leaks. 




Heidi 







On 1/2/2018 12:05 PM, Jonathan Creel wrote: 



Steve 
At 9:52am the ESR behavior abruptly changed. We are investigating on our end and would appreciate if the Halls could log any possible changes they might have made no matter how small they thought they were. 

Thanks 
J 


On 1/2/2018 10:12 AM, Steve Lassiter wrote: 



With a locked out valve setting on its fill valve, the HMS Q2 liquid inventory is mainly dependent on the supply pressure and return. The graph shows that the HMS Q2 started to lose liquid inventory after the dewar level started to decrease. 
The HMS Q2 magnet reacted to a change and was not the cause of the change.

Steven

----- Original Message -----
From: "Dave Kashy" <kashy at jlab.org> To: "Cryo" <esr-users at jlab.org> Sent: Tuesday, January 2, 2018 9:35:02 AM
Subject: [Esr-users] [New Logentry] Follow-up Re: HMS Q2

Follow-up Re: HMS Q2 


Lognumber 3508362 . Submitted by kashy on Tue, 01/02/2018 - 09:30. Logbooks: 	HCLOG CLOG 
References: 	3508324 - HMS Q2 


ESR dewar is still loosing liquid level. 
Looking around some more I still see the HMSQ2 not at steady state. 

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-- 
Jonathan Creel
Cryogenics Engineering and Operations Department Head and Senior Electrical Engineer
Thomas Jefferson National Accelerator Facility
12000 Jefferson Avenue, Newport News, Virginia, 23602
Phone (757)269-5925 


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