2022/10/23 (Sunday)

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 → DCRCX(4) Lead/poly shield fully assembled. Boron-filled socks covering NaI detectors. PuBe source in storage in PAN 443.
	Cooled to base yesterday after sixteenth 5K pumpout
	Took low-threshold -80V SiHV-triggered bg data overnight. DAQ crash at 7:13 am, had to restart DAQ programs.
1040	MC base = 29.8 mK, peaks are below 30.1 mK. Not sure when spikes started.
1051	Start -82.1 V bg data series ## min long, SiHV-triggered with 1000 initial randoms, 5 Hz in-run randoms, trigger on DCRC1pA threshold 2. Start series with the Start Button
1050	HV = -91.6 V, Vtest = -21.8 mV, Ileak = -23.9 uA, Vdet = -82.1 V (90%).
1055	DCRC1pA baseline = -0.809 V
1235	MC/Coldplate =57/150 mK, Still = 1.11 K / 0.110 mbar / 0 mW, G1/G2 = 115/125 mbar, 1K Pot = 60° / 1.58 K / 10±1 mbar, MB = 64.6%
1245	Filled LN2 cold trap dewar
1925	Set NaI array threshold window to 7.0 to 11.0 MeV
1925	DCRC1pA baseline = -0.808 V
1930	HV = -91.7 V, Vtest = -22.7 mV, Ileak = -24.9 uA, Vdet = -81.7 V (89%).
2310	HV = -91.7 V, Vtest = -23.9 mV, Ileak = -26.3 uA, Vdet = -81.2 V (89%). Leakage has been increasing somewhat, possibly because it is unseasonably warm and we have been neglecting to hook up the E-box N2 purge (since it doesn't seem necessary when it's cold and the humidity is low).
2315	DCRC1pA baseline = -0.810 V