2021/11/02 (Tuesday)

Status	Run 75 prep.
	1K Pot isolated. LN2 Traps pumped out. MB in pit, clean tent erected. Cryostat vacuum jacket (CVJ) pumped out.
	Finished Tower installation yesterday, pumped IVC overnight. Bolts need to be tightened more.
1300	Double-check all three cables at BOB. Initially Cable3 Feedback A had an unstable reading, but it fixed itself spontaneously. All other connections OK.
1330	Turbo on IVC = 86 nbar. With Turbo valved out for 1 minute, IVC = 1 ubar.
1350	Attach Leak Detector to IVC, valve out Turbo. IVC =~ 10 pbarL/s
1400	Start cryocleaning mixture through LN2 Cold Trap 1, V6 = 12.3%
1405	Increase V6 → 12.6% to restart flow
1420	Increase V6 → 12.8% to restart flow
1510	Stop cleaning through Trap 1 after 70 min. G2 flow pressure was 570-775 mbar. Pump mixture to dump. Removed 9.7 mbar.
1425	Squirt helium to leak check seals at top of fridge stand and IVC indium seals. Looks ok. At one point squirting near the stripline elbow, signal increased 11→29 pbarL/s, but this was not repeatable, so no real evidence of a leak there or elsewhere.
1545	Solder cable with 4 conductors to Dsub 15 connector for the Goldman thermometer (the other ends will be soldered to the Dsub diverter board). V+/V-/I+/I- → pin 5/14/10/11 → wire Black/Red/Green/White