2019/06/24 (Monday)
| 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 → DCRCX(4)/DCRC55(1) DCRC33(2) → 1kV power supply → HV input Three walls of the lead/poly shield are up. |
|---|---|
| 0650 | Start an 88 min series at HV = 180→400V, rate 2.49V/min, with 10% prebias for 2 minutes, flash at end with 30 min wait. CDMS detector: Driver Gains = 1x, DCRC4/1 QET biases = (490/400/490)/(420/480/450) uA, Front-End Gains = (2/2/3)/(5/5/5) 1000 BOR, 5Hz InRun randoms, trigger on DCRC1pB/C/D threshold = 7/7/7. Use sequence HVdrift_180V_cal0612_2p49VPM_prebias_10_2_dur_88min_flashDCRC_1_4.msl |
| 0855 | Fill LN2 cold trap bath |
| 0922 | Tower/MC/Coldplate = 40.4/30.9/176 mK, Still = 1.00 K / 0.09 mbar, G1/G2 = 149.5/153.4 mbar, 1K Pot = 1.61 K / 17 mbar. MB = 36.6% |
| 1445 | Commence LHe transfer. MB = 27.4% |
| 1525 | Cease LHe transfer. MB = 86.1% Small error made at end: the transfer stick was removed entirely before being detached from the fridge |
| 1545 | Fill LN2 cold trap bath |
| 1618 | Start an 88 min series at HV = 180→400V, rate 2.49V/min, with 10% prebias for 2 minutes, flash at end with 30 min wait. CDMS detector: Driver Gains = 1x, DCRC4/1 QET biases = (490/400/490)/(420/480/450) uA, Front-End Gains = (2/2/3)/(5/5/5) 1000 BOR, 5Hz InRun randoms, trigger on DCRC1pB/C/D threshold = 7/7/7. Use sequence HVdrift_180V_cal0612_2p49VPM_prebias_10_2_dur_88min_flashDCRC_1_4.msl |
| 1936 | Start an 88 min series at HV = 180→400V, rate 2.49V/min, with 10% prebias for 2 minutes, flash at end with 30 min wait. CDMS detector: Driver Gains = 1x, DCRC4/1 QET biases = (490/400/490)/(420/480/450) uA, Front-End Gains = (2/2/3)/(5/5/5) 1000 BOR, 5Hz InRun randoms, trigger on DCRC1pB/C/D threshold = 7/7/7. Use sequence HVdrift_180V_cal0612_2p49VPM_prebias_10_2_dur_88min_flashDCRC_1_4.msl |