2022/09/20 (Tuesday)
- Lab in-personnel: Matt
| Status | Run 76 in progress |
|---|---|
| Setup | Cables 2/3/1 → diverter/nothing/nothing → Side2-readout HV CONN 1/3/2 → HV 1(L)/2(R) → DCRC50(3)/DCRC55(1), DCRC33(2)→HV control, NaI trigger signal → DCRCX(4) Lead/poly shield fully assembled. Boron-filled socks covering NaI detectors. PuBe behind lead wall on West side of lead/poly shield. |
| NaI trigger window: 7.6-11.2 MeV | |
| Cooled to base yesterday after eighth 5K pumpout. Temperature spikes started 4:15 am. Took -80V data overnight but there was some kind of DAQ crash. |
|
| 0915 | MC base = 29.4 mK with spikes mostly peaking below 30 mK, some spikes peaking above 31 mK |
| 0915 | Stop MIDAS series - it got stuck trying to stop, so I turned of the DAQ programs and turned them back on. Then restarted data and it's working. |
| 0925 | Start -80.0 V PuBe data series 42 min long, SiHV-triggered, with 1000 initial randoms, 5 Hz in-run randoms, trigger on DCRC1pB threshold 10. Start series with the Start Button |
| 0925 | HV = -87.9 V, Vtest = -18.1 mV, Ileak = -19.9 uA, Vdet = -80 V (91%). |
| 1007 | Start -80.0 V PuBe data series 636 min long, NaI-triggered, with 1000 initial randoms, 5 Hz in-run randoms, trigger on DCRC4pA threshold 20. Start series with the Start Button |
| 1110 | MC/Coldplate = 29.4/152 mK, Still = 1.13 K / 0.080 mbar / 0 mW, G1/G2 = 135/136 mbar, 1K Pot = 45° / 1.59 K / 13±1 mbar, MB = 44.4% |
| 1110 | Fill LN2 cold trap dewar |
| 2052 | Start -78.9 V PuBe data series 45 min long, SiHV-triggered, with 1000 initial randoms, 5 Hz in-run randoms, trigger on DCRC1pB threshold 10. Start series with the Start Button |
| 2055 | HV = -88 V, Vtest = -20.7 mV, Ileak = -22.8 uA, Vdet = -78.9 V (90%). |
| 2138 | Start -78.9 V PuBe data series 689 min long, NaI-triggered, with 1000 initial randoms, 5 Hz in-run randoms, trigger on DCRC4pA threshold 20. Start series with the Start Button |