2022/10/12 (Wednesday)
- 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 source behind lead wall on West side of lead/poly shield. |
| NaI trigger window: 7.6-11.2 MeV | |
| Cooled to base yesterday after thirteenth 5K pumpout. | |
| Temperature spikes began at 5:55 am. MC = 29.3 mK base. | |
| 1000 | Adjust phonon channel offsets to get all baselines close to -0.80 V |
| 1555 | MC/Coldplate = 29.9/151 mK, Still = 1.12 K / 0.110 mbar / 0 mW, G1/G2 = 133/141 mbar, 1K Pot = 45° / 1.58 K / 11±1 mbar, MB = 37.1% |
| 1600 | Fill LN2 cold trap bath |
| 1603 | Begin LHe transfer @ MB = 37.1% |
| 1649 | End LHe transfer @ MB = 93.1% |