| | Setup: DIB1/3/4 → 3.2 MHz filters 2/3/1 → cable 3/1/2 → gender changer 3/?/2 → HVConn 1/3/2 → HV 1/2 → DCRC55(1)/DCRC50(3) |
| | overnight: base temperature stable, 1K Pot drifting down slowly |
| 0931 | Tower/MC/Coldplate = 30.1/29.5/180 mK, Still = 1.4 K / 0.075 mbar / 1.5 mW, G1/G2 = 131/128 mbar, 1K Pot = 1.40 K / 2.6 mbar. MB = 67.6% |
| 0935 | Fill LN2 cold trap full. |
| 0940 | Close 1K pot needle valve and immediately reopen to same position. Felt a faint “click” of resistance when closing it. Maybe there was some bit of ice down there? 1K Pot → 2.0 K / > 1000 mbar. Tower temp spikes to 37 mK, but falls quickly back down. |
| 0945 | P2 > 1000 mbar, 1K pot pumping line getting a little frosty, close needle valve 20 degrees. |
| 0947 | Tower = 29.2 mK, Still = 0.16 mbar, 1K pot = 1.96 K / >1000 mbar |
| 0951 | 1K Pot pumping line still frosty, close 1K Pot needle vale another 20 degrees. Tower = 30.0 mK, Still = 0.13 mbar, 1K pot = 1.85 K / >1000 mbar. |
| 1000 | Tower = oscillating around 30.0±0.5 mK, Still = 0.12 mbar, 1K pot = 1.76 K / >1000 mbar. |
| 1002 | Close 1K Pot needle valve an additional 10 degrees. P2 falls back into range, oscillating about ~600 mbar and falling. |
| 1050 | 1K Pot = 1.59 K / 16 mbar and settling |
| 1210 | Tower = 29.8 mK, 1K Pot = 1.52 K / 6.5 mbar and settling |
| 1518 | Start 60-minute background (+PuBe) data series at HV = 50 V, Driver Gains = 2x, QET biases = (280/260/305)/(135/290/300) uA, Front-End Gains = 10, 1000 initial randoms, trigger on DCRC3pB/C/D threshold = 8/16/16, flashing then waiting 30min after each series, 15% prebias for 5min, 60 min period between flashing broken into 6, 10 min mini-series to accommodate DCRC timing glitch issue, using sequencer script DataLoop_50V-30Flash-30Wait-60data-10minMiniSeries.msl |
| 1635 | Fill LN2 cold trap full. |
| 1706 | Set HV=50 V with 15%prebias for 5 min using sequence changeHV-0_50-preBias15_5.msl |
| 1713 | Start 40 15-minute background (+PuBe) data series at HV = 50 V, Driver Gains = 2x, QET biases = (280/260/305)/(135/290/300) uA, Front-End Gains = 10, 1000 initial randoms, trigger on DCRC3pB/C/D threshold = 8/16/16, no flashing between series, using sequencer script SimpleDataLoopNoFlash.msl |
| 1715 | 1K Pot = 1.44 K / 3.8 mbar. Open 1K Pot needle valve +10 degrees. |