[Esr-users] ESR high 4.5K load

[Joe D. Wilson, Jr]

Hello Dave,

During the JLab Holiday shutdown period with no 15K targets, ESR supported
the 4.5K loads of three halls without help from CHL1. Currently with the
same nominal load configuration, ESR compressor discharge is 18 atmospheres,
but CHL1 help is required to maintain steady ESR dewar level (~ 2 g/s).

Thanks!

P.S.

Also, here is CLOG entry of interest.

 <https://logbooks.jlab.org/entry/3544839> Hall C 4 atm isolated 

Lognumber  <https://logbooks.jlab.org/entry/3544839> 3544839. Submitted by
<https://logbooks.jlab.org/user/cperry> cperry on Fri, 03/16/2018 - 09:32. 

just after lunch yesterday the 4 atm supply to Hall C was isolated and
overnight it was notcied that the inlet JT on the HMS dipole closed from 29%
down to 26%, possibly due to a leak from 4 atm into the magnet via the
cooldown heat exchanger. Hall C and cryo have decided to leave the 4 atm
valve isolated to Hall C as long as it is not needed.

 

 

-----------------

Joe D. Wilson, Jr.

Cryogenic Operations Engineer

 

Jefferson Lab

 <http://www.jlab.org/> www.jlab.org

757-269-7722

 <mailto:jwilson at jlab.org> jwilson at jlab.org

 

 

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