2021/03/16 (Tuesday)
- Lab in-person: Ruiren
- Virtual partner: Matt
| Status | Run 74 in progress. |
|---|---|
| Setup: DIB1/2+acc → SL 41/43 → 3.2 MHz filters → cables 2/3 → nothing/HV_diverter_board → DCRC50(3)/55(1). Kepco 0-40V supply → HV BNC. No lead/poly shield. | |
| 0900 | MB = 68.1% |
| 0925 | Tower = 90.6 mK |
| 0930 | Noise in DCRC3qI/qO/DCRC1qI/qO = 2.1/1.3/4.6/1.5 e-6 @ 10 kHz |
| 0938 | Start 31min series of +10V/0V data (bias applied after 1 min), with 1000 beginning randoms, trigger threshold 40/40/40/40 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 |
| Triggering looks OK | |
| 1203 | Start 31min series of -11V/0V data (bias applied after 1 min), with 1000 beginning randoms, trigger threshold 40/40/40/40 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 |
| Triggering looks OK, maybe some trigger bursts from sporadic noise | |
| 1535 | Ruiren enters lab |
| 1535 | Tower/MC/Coldplate = 90.7/38.4/189 mK, Still = 1.47 K / 0.130 mbar / 0 mW, G1/G2 = 367/336 mbar, 1K Pot = 1.69 K / 40±2 mbar. |
| 1540 | Fill LN2 cold trap bath |
| 1547 | Ruiren leaves lab |