2018/08/14 (Tuesday)
| 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) 1.1kV → NaI B/C → Ortec 452(gain=5, shaping = 6 us, output=10V) / Ortec 575A(gain=10, shaping = 3us) → DCRCX(4) DCRC33(2) → kepco 1kV power supply → HV input |
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| status: Took SiHV+NaI PuBe data overnight. DCRC1pB railed during 07180813_1901 so all data after that is bad. | |
| 0905 | Tower/MC/Coldplate = 32.0/29.0/167 mK, Still = 1.0±0.1 K / 0.080 mbar, G1/G2 = 124/121 mbar, 1K Pot = 1.64 K / 30 mbar, Turbo on IVC = 1.0 nbar, MB = 18.4% |
| 0910 | Fill LN2 cold trap bath. |
| 0910 | Pause sequence for a few minutes because I thought we were between data taking periods, but actually we are in the middle of one. We'll probably want to stop data to do the LHe transfer. |
| 0933 | Start LHe transfer @ MB = 17.9% |
| 1053 | End LHe transfer @ MB = 93.7% |
| 1120 | Unrail DCRC1pB and DCRC3pB. |
| 1122 | Start 4 x 2hr 40 V PuBe datasets each split into 10min subruns, with CDMS and NaI detectors running and DCRC2 as HV controller. Using sequence HVscan-40×4-15_5PreBias-30Flash 30wait-2hrData-10minSubRun.msl CDMS detector: Driver Gains = 2x, QET biases = (280/260/305)/(140/280/295) uA, Front-End Gains = 10 NaI detector: 1.1kV → NaI B/C → Ortec 452(gain=5, shaping = 6 us, output=10V, Pos) / Ortec 575A(gain=10, shaping = 3us, Pos) → DCRC4PB/PA, Driver Gains = 1/1, PhononWaveFormLength = 1024 (512 samples), PhononPrepulseSamples = 64 (64 samples) 1000 BOR randoms, trigger on DCRC3pB/D threshold = 7/9 |
| 1728 | Fill LN2 cold trap full. |
| 2200 | All channels still look good. |
| 2208 | Start 4 x 2hr 40 V PuBe datasets each split into 10min subruns, with CDMS and NaI detectors running and DCRC2 as HV controller. Using sequence HVscan-40×4-15_5PreBias-30Flash 30wait-2hrData-10minSubRun.msl CDMS detector: Driver Gains = 2x, QET biases = (280/260/305)/(140/280/295) uA, Front-End Gains = 10 NaI detector: 1.1kV → NaI B/C → Ortec 452(gain=5, shaping = 6 us, output=10V, Pos) / Ortec 575A(gain=10, shaping = 3us, Pos) → DCRC4PB/PA, Driver Gains = 1/1, PhononWaveFormLength = 1024 (512 samples), PhononPrepulseSamples = 64 (64 samples) 1000 BOR randoms, trigger on DCRC3pB/D threshold = 7/9 |