2022/05/10 (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) |
| 0910 | Yesterday's 0V data was not good, something happened over time, all the baselines rose and pulses stopped. Today the pulses look fine, so far. |
| 0915 | MC = 28.5 mK. |
| 0917 | Start 0 V data series 63 min long, with 1000 initial randoms, 5 Hz in-run randoms, trigger on DCRC3pD threshold 10. Start series with the Start Button. |
| 1106 | Dial HV up to -222.5 V using RootSequencer for prebias. Set it to rise about 5 V/s with 0.25 second steps. |
| Baselines rise significantly, pulses weak. | |
| 1113 | After 5 minutes dial HV down to -195.6 V |
| pulses look good | |
| 1115 | Start -195.6 V data series after 5 min 13% prebias, 67 min long, with 1000 initial randoms, 5 Hz in-run randoms, trigger on DCRC3pD threshold 10. Start series with the Start Button. |
| 1120 | MC = 28.5 mK |
| 1223 | Dial HV down to 0V after data series ends. |
| 1300 | MC/Coldplate = 28.5/137 mK, Still = 1.09 K / 0.100 mbar / 0 mW, G1/G2 = 100/98 mbar, 1K Pot = 18° / 1.57 K / 9±1 mbar, MB = 39.8% |
| 1300 | Goldman = 72.2 mK @ 632 uV excitation |
| 1305 | Fill LN2 cold trap bath |
| 1521 | Begin LHe transfer @ MB = 36.5% |
| 1614 | End LHe transfer @ MB = 95.6% |