2020/05/20 (Wednesday)

1548	Filling LN2 cold trap dewar.
1513	Matt Fritts body temperature = 98 F
1545	Matt arrives in lab
1550	Turbo on IVC = 25 nbar.
1600	Start cryocleaning mixture through LN2 Cold Trap 1, V6 = 12.4%
1605	Increase V6 → 12.5% to speed up flow
1615	Increase V6 → 12.6% to restart flow
1625	Increase V6 → 12.7% to speed up flow
1635	Increase V6 → 12.8% to speed up flow
1700	Stop cleaning through Trap 1 after 60 min. G2 flow pressure was 550-655 mbar. Pump mixture to dump. Removed 11.4 mbar.
1715	Start cryocleaning mixture through LN2 Cold Trap 2, V6 = 13.0%
1800	Increase V6 → 13.1% to speed up flow
1815	Stop cleaning through Trap 2 after 60 min. G2 flow pressure was 605-725 mbar. Pump mixture to dump. Removed 7.3 mbar.
1830	Finished cleaning, pumped mixture to dump. Leaving both LN2 traps out to warm up overnight.
1835	Leaving lab for the day.
1912	Matt Fritts body temperature = 99.3 F. Note - I was overheated after the bike ride home, which is typical on warm & sunny days.
2147	Matt Fritts body temperature = 98.1 F

Idea for making 1-person He transfers easier:

make aluminum hooks to hang the horizontal part of the transfer lines. These hooks will hang from the gray LHe transfer pipe. Before bringing in the Dewar, you can hang the transfer line from these hooks, placing it roughly in position to insert into the storage Dewar. make 4 hooks, 0.75“ X 9.6” strips of aluminum.