| | Setup: iZIP mode, DIB1/2/3 → cables → 3.2 MHz filters → DCRC55/33/50 |
| | Taking background data overnight with MIDAS. Last flash at 07:35 |
| 0835 | Tower/MC(H35)/MC sensor/Cold Plate = 32.0/27.4/42.4/170 mK, Still = 1.33 K / 0.11 mbar, G1/G2 = 115/135 mbar, 1K Pot = 1.61 K / 6.0 mbar, Main bath = 21.1% |
| 0845 | Start LHe transfer at 20.1% |
| 0855 | Fill LN2 cold trap Dewar |
| 0855 | Set charge biases back to 0/0 V. |
| 1003 | Finish LHe transfer at 88.0% |
| 1115 | Prepare to switch cold traps mid-circulation. G1/G2: 116.9mbar/136.1mbar, P1: 10ubar, Tower temperature: 32.4mK. |
| 1116 | Open V13B to allow mixture in Cold Trap 2. |
| 1117 | Open V12B and Cold Trap 2 speedivalve to bring Cold Trap 2 into circulation. Close V13A to stop circulating through Cold Trap 1, but continue pumping mixture out of it. |
| 1120 | Close V12A and Cold Trap 1 speedivalve. P1: 9ubar. Open V11A and V8 to pump out the rest of the mixture in Cold Trap 1 to the still side. P1 rises to 55mbar, starts dropping. |
| 1150 | P1: 10ubar. Close V8 and V11A. Circulation back to normal. Tower temperature had spiked when reintroducing mixture, but then it dropped below normal, and now it's risen slightly to 33mK. Watching it to see how it behaves. |
| 1712 | Place Cf source at fridge for overnight data taking. |
| 1720 | Saw some strong ~200Hz noise. Unplug bung from LHe dewar to release pressure. At least temporarily, noise goes away. |
| 1723 | Start 15 30min series of -/+4V MIDAS Cf data; FG=5/2/5, OG=3; with 30s flash and 25min cooldown in between series. Trigger on DIB1pA only (Side1pB) with trigger threshold = 30 and Pileup Cut threshold to 100 μs. |
| 1725 | Fill LN2 cold trap full. |