2022/10/09 (Saturday)
- Lab in-personnel: 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 source behind lead wall on West side of lead/poly shield. |
| NaI trigger window: 7.6-11.2 MeV | |
| Cooled to base three days ago after twelfth 5K pumpout. | |
| 1025 | Check phonon channels - elevated baselines, no pulses, looks like they've gone normal |
| 1030 | MC base around 31.2 mK |
| 1030 | MC/Coldplate = 31.2/151 mK, Still = 1.13 K / 0.110 mbar / 0 mW, G1/G2 = 112/108 mbar, 1K Pot = 45° / 1.58 K / 11±1 mbar |
| 1030 | Close V6 to stop circulation |
| 1050 | Turn off 3He pump |
| 1550 | Fill LN2 cold trap bath |
| 1555 | Close 1K Pot needle valve |
| 1610 | Close 1K Pot speedivalve, V4a, 4He pump inlet valve. Close recovery valve to 4He pump outlet. NOTE: remember to open recovery valve when the pump is turned back on. |
| 1645 | Turn off 4He pump. |
| 1645 | Turn on Still and MC heaters to 20 mW each |