2022/01/14 (Friday)
- 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. Am Source y = 20.01 mm |
| 1338 | Goldman/Tower/MC(H35)/Coldplate = 42.2/76.3/34.2/185 mK, Still = 1.42 K / 0.110 mbar / 0 mW, G1/G2= 252/226 mbar, 1K Pot = 1.61 K / 15±1 mbar, MB = 27.9%. |
| Results of recent automated IbIs | ||
|---|---|---|
| channel | QETbias[uA] for dP/dI=1 uV | T[mK] |
| DCRC1pA | 238.3 | 41.5 |
| DCRC1pB | 283.2 | 41.2 |
| DCRC1pC | 275 | 42.2 |
| DCRC1pD | 198.2 | 41.5 |
| DCRC3pA | 178.2 | 41.9 |
| DCRC3pB | 174.4 | 41.8 |
| DCRC3pC | 219.2 | 42.2 |
| DCRC3pD | - | - |
| DCRC4pA | 224 | 41.7 |
| DCRC4pB | 161.9 | 41.7 |
| DCRC4pC | 263.2 | 41.8 |
| DCRC4pD | 196.8 | 42.2 |
| 1347 | Begin LHe transfer @ MB = 27.9% |
|---|---|
| 1424 | End LHe transfer @ MB = 91.9% |
| 1450 | Fill LN2 cold trap bath |
| 1555 | Goldman = 42.2 mK. Do mini-IbIs on a few channels, trying to confirm QET bias versus temperature curves. |
| 1600 | Set QET biases to targed dP/dI = 1.0 uV, then adjust driver offsets to set all baselines near -0.9 |
| 1606 | Start 0V data series, ## min long, with 1000 initial randoms, no in-run randoms, trigger on DCRC3pB threshold 10. Start series with the Start Button. Aborted, because the naming is wrong, I had the IbIs sequence reset to the previous /Logger/Channels/0/Settings/Filename but since there was a crash once, this failed to reset to the proper .RUN%05d_DUMP%04d.mid.gz. Reset this, and deleted the one misnamed file in /livedata. |
| 1655 | Goldman = 41.1 mK. Readjust QET biases accordingly. |
| 1655 | Start 0V data series, 38 min long, with 1000 initial randoms, no in-run randoms, trigger on DCRC3pB threshold 10. Start series with the Start Button. |
| 1727 | Goldman = 41.2 mK. Readjust QET biases accordingly. |