2022/08/17 (Wednesday)
- Lab in-personnel: Matt, Giulia
| 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. |
| 1205 | MC/Coldplate = 28.8/149 mK, Still = 1.13 K / 0.120 mbar / 0 mW, G1/G2 = 148/136 mbar, 1K Pot = 50° / 1.62 K / 19±1 mbar, MB = 39.1% |
| 1213 | Fill LN2 cold trap bath |
| 1445 | Overnight the MC temperature started spiking again. They started out a couple hours apart and steadily increased in frequency to more like an hour apart as of this morning. Peaks were between 30 and 31.5 mK, from a base around 29. As of this afternoon it has settled to gentle waves of only around 0.2 mK peak-to-peak with mean of 29.0 mK and period around 20 minutes. |
| 1457 | Begin LHe transfer @ MB = 35.4% |
| 1545 | End LHe transfer @ MB = 95.6% |