2019/06/30 (Sunday)
| 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. |
|---|---|
| 0200 | Apparently at about this time the fridge computer spa-vuk1 was rebooted. |
| 0755 | Use Remote Desktop to restart LabVIEW vis on the fridge computer. |
| 0803 | Start a sequence of 6 @ 87 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 = (490/400/495)/(420/480/450) uA, Front-End Gains = (2/2/3)/(5/5/5) 1000 BOR, 5Hz InRun randoms, trigger on DCRC1pD threshold = 6. Use sequence HVdrift_6X180V_2p49VPM_loopversion_prebias_10_2_dur_87min_flashDCRC_1_4.msl |
| note: LHe transfer began at about 60 minutes into the 3rd series of the above sequence. End of transfer occurred slightly after the end of the data series. | |
| 1400 | Tower/MC/Coldplate = 38.8/29.4/197 mK, Still = 1.37 K / 0.18 mbar / 6mW, G1/G2 = 217/203 mbar, 1K Pot = 1.62 K / 19.0 mbar. MB = 26.7% |
| 1405 | Fill LN2 cold trap bath from transfer dewar. |
| 1410 | Begin LHe transfer @ MB = 27.3% |
| 1446 | End LHe transfer @ MB = 92.5% |
| 2233 | Start a sequence of 6 @ 87 min series at HV = 180→400V, rate 2.49V/min, with initial 30 minute wait, with 10% prebias for 2 minutes, flash at end with 30 min wait. CDMS detector: Driver Gains = 1x, DCRC4/1 QET biases = (490/400/495)/(420/480/450) uA, Front-End Gains = (2/2/3)/(5/5/5) 1000 BOR, 5Hz InRun randoms, trigger on DCRC1pD threshold = 6. Use sequence HVdrift_pause_6X180V_2p49VPM_loopversion_prebias_10_2_dur_87min_flashDCRC_1_4.msl |