2021/12/28 (Tuesday)
- Lab in-personnel: Matt
| Status | Run 75 in progress |
|---|---|
| Setup | Tower Faces 5/3/2 → Cables 2/1/3 → nothing/diverter_board/nothing → DCRC55(1)/DCRC50(3)/DCRCx(4) Lead shield in place |
| 1130 | Goldman/Tower/MC(H35)/Coldplate = 49.4/87.2/38.6/215 mK, Still = 1.70±0.04 K / 0.130 mbar / 0 mW, G1/G2= 238/234 mbar, 1K Pot = 1.63 K / 19±1 mbar, MB = 69.3%. |
| 1140 | Fill LN2 cold trap bath |
| 1210 | Goldman = 50.0 mK |
| 1215 | Start some mini-IbIs, find QET biases for dP/dI = 1.0 uV |
| Goldman temperature | 50.85 mK | 49.95 mK |
|---|---|---|
| QET bias (uA) | ||
| Channel | Previous | New |
| DCRC1pA | 241 (0.94) | 244 |
| DCRC1pB | 314 | 317 |
| DCRC1pC | 274 (0.95) | 277 |
| DCRC1pD | 178 (0.79) | 181 |
| DCRC3pA | 160 (0.91) | 161 |
| DCRC3pB | 162 (1.04) | 162 |
| DCRC3pC | 217 (0.98) | 217 |
| DCRC3pD | - | - |
| DCRC4pA | 205 (0.90) | 209 |
| DCRC4pB | 148 (0.93) | 149 |
| DCRC4pC | 256 (0.97) | 258 |
| DCRC4pD | 189 (0.90) | 190 |
The number in parentheses indicates what the dP/dI in uV would be today at yesterday's QET bias. So a 0.9 mK change in temperature results in an average 7% change in dP/dI.
| 1350 | Start 0V data series, 35 min long, with 1000 initial randoms, no in-run randoms, trigger on DCRC3pB threshold 5. Start series with the Start Button. |
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