2021/12/30 (Thursday)
- 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 = |
| 1505 | Goldman/Tower/MC(H35)/Coldplate = 48.4/85.4/37.7/214 mK, Still = 1.70±0.05 K / 0.120 mbar / 0 mW, G1/G2= 242/237 mbar, 1K Pot = 1.62 K / 19±1 mbar, MB = 36.4%. |
| 1510 | Mini-IbIs on DCRC1pA: new QET bias for 1uV dP/dI is 248.2 uA |
| 1540 | Screwy behavior with DCRC1pC IbIs - the normal part at high QET bias is not linear, it has jumps. Dunno what's wrong. Let's zap SQUIDs, maybe that will help? |
| 1540 | Zap SQUIDs on all 3 DCRCs. Surprisingly strong temperature response, Goldman peaks at 76 mK. |
| 1545 | Fill LN2 cold trap bath |
| After zap DCRC1pC offset seems to be in a more normal range. |