2022/01/09 (Sunday)
- Lab in-personnel: Michael
| 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 |
| Yesterday I turned 15V power off on DCRCs3&4, left on on DCRC1 - this seems to have made the tower significantly cooler. | |
| 0945 | Michael arrive in lab. |
| 0950 | LN2 Fill |
| 0950 | Goldman/Tower/MC(H35)/Coldplate = 41.7/76/33.8/179 mK, Still = 1.433±0.002 K / 0.110 mbar / 0 mW, G1/G2= 237/204 mbar, 1K Pot = 1.61 K / 18±1 mbar, MB = 70.8%. |
| 1007 | Michael leaves lab. |
| With temperature now lower I did mini-IbIs on all channels. Had to zap some channels because some weren't keeping lock and sometimes the temperature was drifting up. Getting the channels more stable got the temperature down. | |
| Gonna take a second series at this source position to see how different it looks now that the temperature is lower | |
| 2130 | Goldman = 41.6 mK. Set QET biases targeting dP/dI = 1.0 uV |
| 2139 | Start 0V data series, 40 min long, with 1000 initial randoms, no in-run randoms, trigger on DCRC3pB threshold 10. Start series with the Start Button. |
| 2144 | Goldman = 41.5 mK. Reset QET biases targeting dP/dI = 1.0 uV |