2021/03/07 (Sunday)
- Lab in-person: Zach
- Virtual partner: Matt
| Status | Run 74 in progress. |
|---|---|
| Setup: DIB1/2+acc → SL 41/43 → 3.2 MHz filters → cables 2/3 → nothing/nothing → DCRC50(3)/55(1). No lead/poly shield. | |
| 1000 | MB = 32.1% |
| 1040 | Tower = 95.0 mK. |
| 1045 | Check noise in the charge channels. Still looks good, about the same as yesterday. |
| 1050 | Start 31min series of -11V data (bias applied after 1 min), with diverter boards removed, with 1000 beginning randoms, trigger threshold 60/60/60/60 on DCRC3qI/qO/DCRC1qI/qO, no in-run randoms, with 1.6384 ms pulses (8192 length) and 400 us prepulse (500 length). Use sequence r74_takeandflash_dcrcbias.msl |
| Triggers look good | |
| Can't quite see a 60keV line |
| 1500 | MB = 22.9% |
|---|---|
| 1515 | Zach enters lab. |
| 1520 | Tower/MC/Coldplate = 93.7/29.6/188 mK, Still = 1.41 K / 0.130 mbar / 0 mW, G1/G2 = 212/197 mbar, 1K Pot = 1.67 K / 34±2 mbar. |
| 1536 | Begin LHe transfer @ MB = 22.1% |
| 1540 | Begin filling LN2 cold trap dewar. |
| 1558 | Ended LN2 transfer (paused it in the middle to go into ligo lab) |
| 1608 | Ended LHe transfer @ MB = 89.5% |
| 1626 | Zach leaves lab. |