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2023/06/17 (Friday)

Previous Day

  • Lab in-personnel: Ping
1049 Check contents of warm LN2 Trap 1: 10.8 mbar (11.2 on G1). Pump it out with the scroll pump.
1054 G1 = 2.3 mbar and stable, stop pumping on Trap 1
1057 Insert LN2 cold trap 1 and begin filling cold trap dewar with LN2
1104 Begin cryocleaning mixture through cold trap 1 following the procedure in procedure:cryoclean_mixture
1106 Open V6 to 12.0% to restart flow
1112 Open V6 to 12.2% to restart flow
1126 Open V6 to 12.3% to restart flow
1143 Open V6 to 12.4% to restart flow
1218 End cryocleaning mixture through trap 1. Pump mixture to dump
1248 P1 = 0.007 mbar, G1 = 1.7 mbar and stable. Close all valves and turn off 3He pump, leaving 714.6 mbar in dump
1251 Remove cold trap 1 from the LN2 bath to warm up overnight

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