2022/04/27 (Wednesday)
- Lab in-personnel: Nikki
| 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 → DCRC52(6) |
| 1322 | Fill LN2 cold trap bath |
| 1330 | MC/Coldplate = 28.5/140 mK, Still = K 1.09 K / 0.110 mbar / 0 mW, G1/G2 = 111/102 mbar, 1K Pot = 18° / 1.57 K / 11±1 mbar, MB = 72.2% |
| 1621 | Dial HV up to -251.6 V using RootSequencer for prebias. Set it to rise about 5 V/s with 0.25 second steps. |
| note this is maximum for the way we set up the HV supply - not quite 15% higher than the intended 220 V | |
| 1628 | After 5 minutes dial HV down to -221.1 V |
| 1630 | Start -221.1 V data series after 5 min 13% prebias, 58 min long, with 1000 initial randoms, 5 Hz in-run randoms, trigger on DCRC3pD threshold 10. Start series with the Start Button. |
| 1730 | Dial HV down to 0V after data series ends. |
