[Esr-users] [New Logentry] Follow-up Re: Follow-up Re: Follow-up Re: Follow-up Re: Follow-up Re: Leak tests during recovery system work

[kashy at jlab.org]

Logentry Text:
--
17:00 3 Halls floating on Recovery suction pressure at 1.08 atm.
4 atm helium supply valves for Halls A and B are open
Hall A system setup to run per J. Buttler
Hall B system is being recovered to supply 80K gas to Torus/Solenoid and Buffer dewar

Take a look at the attached plot of Hall B flow FI8561 and ESR flow CFI6010. There is a scale factor of 3.45 between the two at almost all flows. 

At 17:49 the local flow meter that captures the flow from the cold returns read 3.7g/s and that does not include the magnet lead flows of 177.6slpm for the torus and 99slpm for the solenoid. So the total of those is 3.7 + 0.75g/s= 4.45g/s and the plots show Hall B flow at that time as 5.2 and FI6010 as 1.5. 

Obviously FI6010 needs a significant recalibration! 

18:00 Supply flow temperatures to both the Torus and Solenoid are back down to ~87K






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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/3579772
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