| | Setup: DIB1/3/4 → 3.2 MHz filters 2/3/1 → cable 3/1/2 → gender changer 3/?/2 → HVConn 1/3/2 → HV 1/2 → DCRC55(1)/DCRC50(3) |
| | overnight: DCRCs powered, 85V bias on detector |
| 1540 | Tower/MC/Coldplate = 35.2/30.9/188 mK, Still = 1.29 K / 0.100 mbar, G1/G2 = 145/140 mbar, 1K Pot = 1.52±0.01 K / 6.5±0.5 mbar. MB = 25.5% |
| 1541 | Vbias/Vtest/Vdet = 84.99/5.3/82.87 V |
| 1542 | Dial HV down to 0V and ground. |
| 1543 | Fill LN2 cold trap bath. |
| 1547 | Flash DCRCs 1,3 for 30 sec. |
| 1552 | Start LHe transfer (MB = 25.5%) |
| 1641 | End LHe transfer (MB = 91.7%) |
| 1643 | Dial prebias HV up to 75 V. |
| 1647 | Vbias/Vtest/Vdet = 75.11/10.1/71.06 V. |
| 1700 | Dial HV down, Vbias/Vtest/Vdet = 60.51/1.9/59.751V. Looks like leakage voltage is super low. |
| 1702 | Start sequence of 12 60-minute background data series at HV = 60V, Driver Gains = 2x, QET biases = 290/270/315/140/315/310 uA, Front-End Gains = 10, 1000 initial randoms, trigger on DCRC3pB/C/D threshold = 10/20/20, no flash between, using sequencer script SimpleDataLoopNoFlash.msl. Tower = 35.1 mK. |