[Hallb-engineering] [Revised Logentry] Follow-up Re: Follow-up Re: Follow-up Re: Hall B TL Status

[dinsley at jlab.org]

Logentry Text:
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At about 0930 we closed the valve to the pump on the TL to ESR and waited ~10 min, reading 1.2e-5 on TL.  valve was opened again to the pump temporarily.

1000- closed PV8512S & T manually from 30% as ESR removes L tube.
1025- L tube removal completed. back on 4k supply at ESR 
           PV8512S & T retuened to 30%
1130- Setup and started to pump on Solenoid supply and return transfer lines.
           Initial pressures
            283 mTorr  return
            155 mTorr  Supply
           Pumps were started and temp at TR8610 dropped from 98K to 84K. 
                                                                  TR8611 dropped from 98K to 84K
                                                                  TR8671 dropped from 103.76K to 102.047K
                                                                  TR8670 dropped from 106.03K to 104.418K

1343-We have closed EV8612 from 15% 
                           EV8611CD from 30%
                           EV8611JT from 30%
                           EV8115JT from 100%
                           EV8111CD from 3%

FI8561 is indicating 0.14g/s.  

This is to allow some warming of the Solenoid transfer lines as we pump out the vacuum jackets over night.




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