2022/01/17 (Monday)
- Lab in-personnel: Giulia
| 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 = 30.03 mm |
| 1137 | Goldman = 41.4 mK |
| 1140 | Goldman/Tower/MC(H35)/Coldplate = 41.4/76/33.6/178 mK, Still = 1.37 K / 0.110 mbar / 0 mW, G1/G2= 254.8/240 mbar, 1K Pot = 1.60 K / 15±1 mbar, MB = 71.4%. |
| 1148 | Fill LN2 cold trap bath |
| 1215 | Set QET biases to target dP/dI=1.0 uV and adjust driver offsets so baselines ~ -0.9 V |
| 1219 | Start 0V data series, 35 min long, with 1000 initial randoms, no in-run randoms, trigger on DCRC3pB threshold 10. Start series with the Start Button. |
| 1220 | Goldman = 41.3 mK. Readjust QET biases |
| 1238 | Goldman = 41.2 mK. Readjust QET biases |
| 1735 | Establish communication with Arduino. This causes a temperature spike because I'm working remotely so I didn't turn off the GwINSTEK power supply output. Goldman spikes to 0.40 K then cools. |
| 1740 | Set Dwell to 40 ms |
| 1800 | Do mvNwait -4steps×151 times, 40 second wait, with dwell = 40 and power = 6.8 V. (Around 5.93 mm/hour) This sequence will take 1hr40min40sec and will move the source a total distance of 9.96 mm ending at y = 39.99 mm. Should end at 7:41 pm. Tower temperature averages around 0.52 K, with 40-second oscillations as well as the familiar 1-rotation oscillation. |
| 2015 | Goldman = 64 mK and cooling |
| 2020 | Turn on DCRC1 LEDs with rep rate reduced from 5000 to 500. Turn off LEDs after 3 minutes. Goldman peaked at 1.28 K. |
| 2220 | Goldman = 43.4 mK and cooling. |