| | Setup: iZIP mode, DIB1/2/3 → cables → 3.2 MHz filters → DCRC55/33/50 |
| | DAQ idle over the weekend, DCRCs powered |
| 0855 | Tower = 31.1 mK, Still = 0.090 mbar, G1/G2 = 160/160 mbar, 1K Pot = 1.59 K / 4.5 mbar |
| 0900 | Fill LN2 cold trap full. |
| | Plan today to warm tower up above 1.2 K again then recool, with mu-metal shield in place. Then take Ba data to compare to the unshielded cooldown case. |
| 0900 | Close V6 to stop circulation. After five minutes, Tower → 200 mK and rising, G1/G2 → 100 mbar and falling, Still → 4 mbar and rising. |
| 0905 | Close v13b and turn off circulation pump. |
| 0910 | Set MC heater to 1 mW. Tower = 305 mK, G1/G2 = 60/95 mbar, Still = 7 mbar. |
| 0930 | Tower = 950 mK, G1/G2 = 20/95 mbar, Still = 600 mbar. |
| 0930 | Open V14 to release still pressure into dump. |
| 0940 | Tower = 1.26 K, G1/G2 = 18/95 mbar, Still = 80 mbar. Still pressure is rising again. |
| 0950 | Close V14 and open V3 to see pressure on G1. G1 doesn't change much, falls a little. So Still pressure must not be very high. Close V3 and open V14 again. |
| 1000 | Tower = 1.62 K, G1/G2 = 18/90 mbar, Still = 1000 mbar (off scale) |
| 1015 | Tower = 1.61 K, G1/G2 = 25/90 mbar |
| 1030 | Tower = 1.65 K, G1/G2 = 25/90 mbar |
| 1045 | Tower = 1.70 K, G1/G2 = 30/90 mbar |
| | Detector is well above Al transition (1.2 K) |
| 1050 | Turn off MC heater. Turn on 3He pump. Open V13b. Open V6 to 12%. (Leaving v14 open.) |
| 1055 | G1/G2 = 67 mbar. Open V6 in steps of 0.5%. At 13.5% G1/G2 begin to rise. |
| 1100 | G1/G2 = 120 mbar. |
| 1105 | G1/G2 plateau at 130 mbar, open V6 to 14%. G1/G2 rise quickly to 450 mbar. 1K Pot rises to 1.7 K / 13 mbar then falls again |
| 1113 | Still pressure falls into readable range. G1/G2 peak at 520 mbar then fall again. Tower temperature falling. |
| 1115 | G1/G2 = 430 mbar, Still = 26 mbar, Tower = 1.4 K |
| 1115 | Open V6 to 14.5%. G1/G2 rise somewhat. |
| 1120 | G1/G2 = 360 mbar and falling, Still = 5 mbar, Tower = 1.15 K. |
| 1125 | Open V6 in steps of 0.5%, no increase seen in G1/G2. Open V6 100%. |
| 1130 | Still = 1.3 mbar, Tower = 0.70 K, G1/G2 = 250 mbar. 1K Pot = 1.56 K / 4 mbar. |
| 1145 | Still = 0.5 mbar, Tower = 110 mK, G1/G2 = 205 mbar. Dump nearly empty so close V14. Still pressure falls to 0.12 mbar. |
| 1155 | Still = 0.10 mbar, Tower = 52 mK, G1/G2 = 175 mbar. |
| 1310 | Tower = 31.3 mK, G1/G2 = 140 mbar, Still = 0.095 mbar, 1K Pot = 1.59 K / 4.0 mbar |
| 1320 | Check phonon traces. DIB1 pB, DIB2 pB, DIB3 pB (weird) traces are alive; all other channels are railed. Relocking SQUIDs and adjusting Driver Offsets brings them back. |
| 1340 | Perform mini IbIs on DIBs 1-3 in standard setup with the mu-metal shield in place during the cooldown. |
| 1345 | Unpower DCRCs, remove DSUB pi-filter, attach pi-filter switchboards with all switches ON, repower DCRCs, zap SQUIDs. |
| 1405 | Perform mini IbIs on DIBs 1-3 with pi-filter switchboards on all DIBs and all switches ON.Mu-metal shield was in place during the cooldown. |
| 1410 | Unpower DCRCs, remove pi-filter switchboards from standard position between gender swapper and DCRCs, and place it up on EBox so the setup goes: EBox → Pi-Filter Switchboard → Cables → Gender Swapper → DCRCs. Repower DCRCs. Zap SQUIDs. |
| 1515 | Commence LHe transfer (34.0%). |
| 1555 | Cease LHe transfer (85.7%). |
| 1605 | Wrap all three pi-filter switchboards in aluminum foil and reattach directly to back of DCRCs so setup is EBox → Cables → Gender Swapper → Pi-filter Switchboard (All Switches ON) → DCRCs. |
| 1610 | Repower DCRCs, zap SQUIDs. |
| 1615 | Perform mini IbIs on DIBs 1-3 with foil-shielded pi-filter switchboards on all DIBs and all switches ON. Mu-metal shield was in place during the cooldown. |
| 1630 | Unpower DCRCs, remove pi-filter switchboards, reattach DSUB pi-filters. Repower DCRCs. Zap SQUIDs. |
| 1705 | All pulses look good. |
| | Release pressure from Main Bath. Fill LN2 cold trap full. |
| 1815 | Start 4 hours of 30min Ba series at -4/+4 V with FG=5/2/5, OG=3, 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. |
| 1820 | Place Ba source at back of fridge near where top of shield would be. |