2019/07/14 (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. |
|---|---|
| 0940 | Restart fridge VIs through Remote Desktop connection. Apparently spa-vuk1 rebooted around 2:10 am. |
| 1335 | Tower/MC/Coldplate = 38.4/29.3/196 mK, Still = 1.35 K / 0.18 mbar / 6 mW, G1/G2 = 212.0/199.4 mbar, 1K Pot = 1.614 K / 19 mbar. MB = 28.4% |
| 1341 | Fill LN2 Coldtrap bath from bomb dewar. |
| 1412 | Start LHe transfer. MB = 27.5%. We stopped due to LHe leaking out of the joint between the transfer stick pieces. After disconnecting there appeared to be a buildup of ice at the end of the Dewar piece where it connects to the cryostat piece. MB = 38.3 |
| 1605 | Start LHe transfer. MB = 38.3 |
| 1647 | End LHe transfer. MB = 90.4 |
| 2139 | Start a sequence of 8 @ 50 min series at HV = 180→306V, 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 = 3, baseline/sample length = 20/16 (standard 16/5),phonon pre-pulse 500 (standard is 500). Use sequence HVdrift_8X180V_2p49VPM_loopversion_prebias_10_2_dur_50min_flashDCRC_1_4.msl |