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2021/04/26 (Monday)

Previous Day

  • Lab in-person: Matt
  • Virtual partner: Zach
Status Run 74 in progress. Warmed up to fix IVC leak. Cryostat vacuum jacket and IVC pumped out. Haven't cleaned the mixture yet.
1300 Matt enters lab
1300 Turbo on IVC = 8.6 nbar. With Turbo valved out for 1 minute IVC = 190 nbar.
1315 Check contents of warm LN2 Trap 1: 8.4 mbar. Pump out with Scroll Pump.
1400 Check contents of warm LN2 Trap 2: 6.7 mbar. Pump out with Scroll Pump.
1405 Put Trap 1 in bath and fill bath with LN2.
1425 Start cryocleaning mixture through cold LN2 Trap 1, V6 = 12.4%
1430 Increase V6 → 12.6% to restart flow
1505 Increase V6 → 12.9% to restart flow
1525 Stop cleaning through Trap 1 after 60 min. G2 flow pressure was 590-920 mbar. Pump mixture to dump.
Removed 6.6 mbar.
1545 The server cdms2 on which we run MIDAS was updated to a new OS, Centos5 or whatever. I tried starting MIDAS and it failed. The script checks the hostname and throws an error if it is not 'cdms2'. Apparently the hostname has been changed to 'spa-cdms2'. I made a test script to modify this so that it accepts 'spa-cdms2', but then when I tried to start MIDAS there were other errors, mhttpd and mlogger both hit an error while loading shared libraries.
1555 It doesn't work on cdms3 either. Says “Cannot connect to remote host”.
1610 Check Leak Detector on IVC with Turbo valved out; settles to 11.4 pbarL/s, pretty low
1610 Matt exits lab

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