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2023/12/18 (Monday)

Previous Day

  • Lab in-personnel: Himangshu, Zach
1305 Check contents of LN2 cold trap 1: 8.9 mbar, pump out with scroll pump
1310 Check contents of LN2 cold trap 2: 3.2 mbar, pump out with scroll pump
1312 Insert LN2 cold trap 1 and begin filling cold trap dewar with LN2
1322 Continue to fill cold trap dewar, turn on He-3 pump and let mixture into the cold trap.
1325 Begin cryocleaning mixture through cold trap 1 following the procedure in procedure:cryoclean_mixture
1328 Open V6 to 12.0% to restart flow
1335 Open V6 to 12.2% to restart flow
1350 Open V6 to 12.3% to restart flow
1410 Open V6 to 12.4% to restart flow
1420 End cryocleaning mixture through trap 1. Pump mixture to dump
1435 P1 = 0.120 mbar, G1 = 1.9 mbar and stable. Close all valves and turn off 3He pump, leaving 618.2 mbar in dump
1440 Remove cold trap 1 from the LN2 bath to warm up overnight

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