2023/06/14 (Wednesday)

1004	Check contents of warm LN2 Trap 2: 5.6 mbar (6.1 on G1). Pump it out with the scroll pump.
1011	G1 = 1.4 mbar and stable, stop pumping on Trap 2
1013	Insert LN2 cold trap 2 and begin filling cold trap dewar with LN2
1019	Begin cryocleaning mixture through cold trap 2 following the procedure in procedure:cryoclean_mixture
1024	Open V6 to 12.0% to restart flow
1028	Open V6 to 12.2% to restart flow
1045	Open V6 to 12.4% to restart flow
1100	G1 rising too quickly, lowered V6 to 12.2%
1130	End cryocleaning mixture through trap 2. Pump mixture to dump
1152	P1 = 0.007 mbar, G1 = 2.3 mbar and stable. Close all valves and turn off 3He pump, leaving 724.8 mbar in dump
1155	Remove cold trap 2 from the LN2 bath to warm up overnight

1555	Check contents of warm LN2 Trap 1: 11.9 mbar (12.3 on G1). Pump it out with the scroll pump.
1558	G1 = 1.9 mbar and stable, stop pumping on Trap 1
1604	Insert LN2 cold trap 1 and begin filling cold trap dewar with LN2
1609	Begin cryocleaning mixture through cold trap 1 following the procedure in procedure:cryoclean_mixture
1613	Open V6 to 12.0% to restart flow
1616	Open V6 to 12.2% to restart flow
1629	Tried increasing V6 to restart flow, but G1 rose too quickly. Closed V4 and turning V6 to 0.0% then restarted cryocleaning at V6 = 12.0%
1638	Open V6 to 12.3% to restart flow
1645	Open V6 to 12.4% to restart flow
1725	End cryocleaning mixture through trap 1. Pump mixture to dump
1752	P1 = 0.007 mbar, G1 = 1.7 mbar and stable. Close all valves and turn off 3He pump, leaving 723.4 mbar in dump
1753	Remove cold trap 1 from the LN2 bath to warm up overnight