2022/04/28 (Thursday)

Status	Run 76 in progress
Setup	Cables 2/3/1 → diverter/nothing/nothing → Side2-readout HV CONN 1/3/2 → HV 1(L)/2(R) → DCRC50(3)/DCRC55(1), DCRC33(2)→HV control, NaI trigger signal → DCRC52(6)
1440	MC/Coldplate = 28.5/140 mK, Still = 1.09 K / 0.100 mbar / 0 mW, G1/G2 = 110/104 mbar, 1K Pot = 18° / 1.57 K / 10±1 mbar, MB = 36.9%
1440	Goldman = 72.2 mK @ 632 kOhm excitation
1445	Fill LN2 cold trap bath
1545	Begin LHe transfer @ MB = 35.3%
	Tried weighing the 250L Dewar several times, to see how off we could potentially be. In the lightest case one wheel was maybe slightly touching the floor. In the heaviest case one bottom corner was touching the wall. The measurements spanned 1.7 pounds. Preferred procedure: make sure wheels aren't touching floor and corners aren't touching wall, readjust a few times (rotate a little against wall bar, push down, pull up), take heaviest measurement.
1627	End LHe transfer @ MB = 95.6%
	Gonna redo -180V data cuz it looks like an outlier
1651	Dial HV up to -208.1 V using RootSequencer for prebias. Set it to rise about 5 V/s with 0.25 second steps.
1658	After 5 minutes dial HV down to -180.8 V
1659	Start -180.6 V data series after 5 min 13% prebias, 54 min long, with 1000 initial randoms, 5 Hz in-run randoms, trigger on DCRC3pD threshold 10. Start series with the Start Button.
1700	Tower = 28.2 mK, a bit cooler than during other recent series
1755	Dial HV down to 0V after data series ends.