2016/07/24 (Sunday)
| Setup: iZIP mode, DIB1/2/3 → cables → 3.2 MHz filters → DCRC55(1)/33(2)/50(3), Tower has been cooled below Al transition with mu-metal shield 45.9 cm below standard position | |
| DCRCs on overnight taking bg data. Tower temperature going down slowly. It's still 5 mK higher than a couple of days ago though | |
| 0835 | Tower/MC/Coldplate = 41.9/37.0/166 mK, Still = 1.42 K / 0.095 mbar, G1/G2 = 200/195 mbar, 1K Pot = 1.54 K / 5.0 mbar, MB = 41.6% |
| 0840 | Fill LN2 cold trap bath |
| 0845 | Close V6 to begin warming fridge. Close V13a, turn off 3He pump, apply 1 mW heat to MC. IVC = 10 nbar. |
| 0850 | Tower = 370 mK and rising, G1 = 82 mbar and falling. IVC = 8.6 nbar |
| 0915 | Tower jumps to 3.5 K. IVC = 340 nbar. Pump out IVC with turbo pump. Open V3: G1 pressure goes up from 40 to 250 mbar, so there must have been pressure buildup on the still side. |
| 0925 | Begin LHe transfer at 38.9% |
| 0925 | Still = 3.9 K and falling, G1 = 190 mbar and falling, 1K Pot = 1.63 K / 9 mbar |
| 0935 | Still = 2.6 K and falling, G1 = 82 mbar and falling, 1K Pot = 1.51 K / 5 mbar. Open needle valve a few more degrees |
| 0945 | Still = 2.5 K, G1 = 72 mbar, 1K Pot = 1.70 K / 40 mbar. Turn off MC heater, turn on 3He pump, close V3, open V13a |
| 0950 | G1/G2 = 100/100 mbar and falling. 1K Pot = 1.68 K / 32 mbar. Begin opening V6 to 13.0%, G1/G2 go up a little. Turbo = 0.74 nbar, close valve to IVC. IVC = 3 nbar |
| 0955 | G1/G2 = 95/90 mbar and falling. 1K Pot = 1.65 K / 24 mbar. Open V6 to 13.4%. |
| 1005 | G1/G2 = 250/235 mbar and falling slowly. 1K Pot = 1.63 K / 19 mbar. Open V6 to 13.6%. |
| 1015 | G1/G2 = 330/310 mbar and falling. 1K Pot = 1.62 K / 16 mbar. Still = 2.2 K. Open V6 to 13.8%. |
| 1023 | End LHe transfer at 91.6% |
| 1025 | G1/G2 = 395/370 mbar and flat. 1K Pot = 1.61 K / 14 mbar. Still = 2.0 K / 850 mbar. Open V6 to 14.0%. |
| 1030 | Release pressure from main bath (7 min after transfer ended) |
| 1035 | G1/G2 = 460/430 mbar and flat. 1K Pot = 1.60 K / 12 mbar. Still = 1.9 K / 38 mbar. Open V6 to 14.3%. |
| 1045 | G1/G2 = 420/395 mbar and falling. 1K Pot = 1.59 K / 11 mbar. Still = 1.6 K / 3.8 mbar. Open V6 to 16.2%. |
| Tower has been cooled below Al transition with mu-metal shield at standard position | |
| 1050 | Tower/MC/Coldplate/Still = 0.69/0.74/0.66/1.41 K |
| 1055 | G1/G2 = 340/320 mbar and falling. 1K Pot = 1.58 K / 9.5 mbar. Still = 0.5 mbar. Tower = 0.63 K and falling. Open V6 to 100%. |
| 1100 | Tower = 325 mK and falling, Still = 0.150 mbar, G1/G2 = 330/310 mbar and falling slowly, 1K Pot = 1.58 K / 9.0 mbar |
| 1103 | Release pressure from main bath (40 min after transfer ended) |
| 1105 | Open 1K Pot needle valve a couple of degrees more. |
| 1110 | Tower = 130 mK and falling |
| 1710 | Tower = 41.9 mK, Still = 0.080 mbar, G1/G2 = 210/200 mbar, 1K Pot = 1.54 K / 5.5 mbar |
| 1720 | Check phonon channels, relock some and adjust some driver offsets, all look OK. |
| 1727 | Start 19 hours of 30min background series at -4/+4 V with FG=5/2/5, OG=8/3/8, with 1000 initial randoms, 1000 ending randoms, with 30s flash and 25 minute cooldown between series. Trigger on DIB1 phA with threshold of 30ADC bins, with 150 us pileup cut window. |