2022/02/15 (Tuesday)
- Lab in-personnel: Giulia
| Status | Run 75 in progress |
|---|---|
| Setup | Tower Faces 5/3/2 → Cables 2/1/3 → nothing/diverter_board+extra_board/nothing → Side2-readout HVboard CONN1/2/3 → HV1/2 → DCRC55(1)/50(3) Lead shield in place. Am Source y = 0.03 mm |
| Testing Side2-readout HV board | |
| 0850 | Goldman = 41.5 mK |
| 0910 | Mini-IbIs on DCRC1pA; adjust QET bias for dP/dI = 0.4 uA |
| 0935 | Mini-IbIs on DCRC1pB; adjust QET bias for dP/dI = 0.4 uA |
| 0945 | Mini-IbIs on DCRC1pD; adjust QET bias for dP/dI = 0.4 uA |
| 0955 | Mini-IbIs on DCRC3pA; adjust QET bias for dP/dI = 0.4 uA |
| 1005 | Mini-IbIs on DCRC3pB; adjust QET bias for dP/dI = 0.4 uA |
| 1020 | Mini-IbIs on DCRC3pD; adjust QET bias for dP/dI = 0.4 uA |
| 1020 | Goldman = 41.3 mK |
| 1022 | Dial HV up to 113.2 V for prebias |
| 1025 | Adjust driver offsets to set baselines around -0.9 V |
| 1028 | After 5 minutes of prebias dial HV down to 98.6 V |
| 1030 | Start 98.62 V data series after 5 min 15% prebias, 57 min long, with 1000 initial randoms, 5 Hz in-run randoms, trigger on DCRC3pB threshold 10. Start series with the Start Button. |
| Bias pretty stable, 98.6-98.63 V | |
| Noticed a couple of times now that the Goldman temperature becomes a little noisier when the bias is on. | |
| 1130 | Dial HV down to 0V after series ends |
| 1315 | Goldman/Tower/MC(H35)/Coldplate = 36.8/97.1/32.4/175 mK, Still = 1.30 K / 0.130 mbar / 0 mW, G1/G2= 290/267 mbar, 1K Pot = 1.58 K / 11±1 mbar, MB = 30.9% |
| 1327 | Fill LN2 cold trap bath. |