| | Setup: DIB1/3/4 → SL 27/19/20 → 3.2 MHz filters → cables 2,1,3 → HV board inputs 1,3,2 → HV board outputs 1,2 → DCRC55(1)/50(3). Also DCRC4 is powered and hooked up to control the HV setting. |
| 0935 | Tower = 22.4 mK |
| 0940 | Adjust driver offsets remotely. |
| 0946 | Start Noise HV scan sequence HVscan-30_50V-15_5PreBias-30Flash-5wait-1hrData.msl Sequence takes data at 30, 40, 50 V HV biases with 15% prebias for 5 min and 30s flash with 5 min wait between each 1 hr series. Random triggering, 1000 BOR randoms. DriverGains=1, QETbias = (DCRC1PA/PB/PC)/(DCRC3PB/PC/PD) = (480/370/510)/(470/380/500). Cooldown time is short to observe baseline shifts during post-flash cooldown. |
| 0958 | HV = 30.01 V, V_leak = 1.46 mV |
| 1112 | HV = 39.98 V, V_leak = 1.57 mV |
| 1204 | HV = 39.98 V, V_leak = 1.35 mV |
| 1244 | HV = 50.03 V, V_leak = 1.80 mV |
| 1443 | Fill LN2 cold trap full. |
| 1443 | Tower/MC/Coldplate = 22.5/29.2/157 mK, Still = 1.5 K/0.100 mbar, G1/G2 = 239/218 mbar, 1K Pot = 1.62 K / 24 mbar, MB = 27.4% |
| 1455 | Start LHe transfer (MB = 27.1%) |
| 1721 | End LHe transfer (MB = 89.5%) |
| 2215 | put out 22Na source and leaving out overnight. will remove at 10am tomorrow morning |