2021/09/19 (Sunday)
- Lab in-personnel: Giulia and Matt
| Status | Run 74 in progress. First cooldown after IVC rebuild. |
|---|---|
| Tower thermometer is reading high, probably this is a thermometer problem and the actual temperature is much lower. High noise in some of the charge channels. | |
| Setup: DIB1/2+acc → SL 41/43 → 3.2 MHz filters → cables 2/3 → nothing/ |
|
| Position of Am source: y = 0.0 mm | |
| 1323 | Tower/MC/Coldplate = 113.5/38.8/199 mK, Still = 1.38 K / 0.095 mbar / 0 mW, G1/G2= 342.8/319.4 mbar, 1K Pot = 1.51 K / 10±1 mbar. MB = 32.6%. |
| 1435 | Fill LN2 cold trap bath |
| 1342 | At 10kHz noise in DCRC3qI/qO/DCRC1qI/qO = 10/3.0/2.4/46 8e-6. This is q3/q1/q4/q2 At 3kHz (peak) noise in DCRC3qI/qO/DCRC1qI/qO = 81/12/27/330 e-6. |
| Noise is slightly higher than yesterday especially @3kHz, while some are slightly lower @10kHz. | |
| 1323 | Start LHe transfer @ MB = 32.6% |
| 1417 | End LHe transfer @ MB = 91.3% |
| 1444 |