2022/04/21 (Thursday)
- 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 → DCRC52(6) |
| 1000 | QET biases are set to dP/dI=0.7uV based on yesterday's IbIs. Pulses look good. |
| 1000 | MC = 28.5 mK |
| 1004 | Dial HV up to 26.3 V using RootSequencer for prebias. Set it to rise about 5 V/s with 0.25 second steps. |
| 1009 | After 5 minutes dial HV down to 22.2 V |
| 1010 | Start 22.2 V data series after 5 min 15% prebias, 68 min long, with 1000 initial randoms, 5 Hz in-run randoms, trigger on DCRC3pD threshold 10. Start series with the Start Button. |
| 1425 | Dial HV down to 0V after data series ends. Forgot to do this sooner so it's been biased quite a while. |
| 1430 | MC/Coldplate = 28.5/140 mK, Still = 1.09 K / 0.110 mbar / 0 mW, G1/G2= 113/102 mbar, 1K Pot = 18° / 1.57 K / 11±1 mbar, MB = 70.5% |
| 1430 | Goldman = 72.9 mK @ 632 uV excitation |
| 1435 | Fill LN2 cold trap bath |
Quick analysis note: in today's 22V data, as in the 100V data, it's impossible to resolve the 14keV line.