2016/08/23 (Tuesday)
| Setup: iZIP mode, DIB1/2/3 → 3.2 MHz filters → cables → DCRC55(1)/33(2)/50(3), Tower has been cooled below Al transition with mu-metal shield 43.9 cm below standard position | |
| DCRCs powered overnight. Pumping on IVC with turbo pump overnight. Baked detector for 12 hours overnight, Tower at 0.4 K until 05:15. | |
| 0840 | Tower/MC/Coldplate = 38.5/32.1/150 mK, Still = 1.25 K / 90 μbar, G1/G2 = 195/180 mbar, 1K Pot = 1.50 K / 3.8 mbar, MB = 39.2%. Boiloff rate: |
| 0845 | Fill LN2 cold trap. |
| 0840 | Check phonon pulses, all look good, all baselines near -0.7 or -0.8. |
| 0850 | With DIB2 FETs turned off, Start three sets of 30min background series at -6/+6 V with FG=5/2/5, OG=8/3/8, with 1000 initial randoms, 1000 ending randoms. Trigger on DIB1 phA with threshold of 30ADC bins, with 150 us pileup cut window. |
| 1220 | Close V6 to begin warm up procedure. Isolate turbopump to let He in IVC accumulate. Lower mu-metal shield to 37.8cm below standard height (should be an attenuation factor of 10). |
| 1225 | V6 closed, close V13B, turn off He3 pump, turn on MC Heater to 1.0mW. IVC = 5.4 nbar |
| 1258 | Tower temp = 1.3K. Temperature jumps up as usual to ~3K. IVC jumps to 250 nbar. G1 fell to a minimum of 25 mbar, now rising. |
| 1310 | Tower = 3.3K. IVC pressure = 300nbar. Begin turbopumping IVC. Turn off MC Heater to let tower start cooling. |
| 1325 | Tower = 2.4K and dropping. G1/G2 = 110mbar and dropping. Turn on He3 pump, close V13B, and begin opening V6. |
| 1445 | Tower = 335mK and dropping. Open V6 all the way. |
| 1600 | Tower = 40 mK. Raise mu-metal shield to standard position. Detector has been cooled below Al transition with mu-metal shield 37.8cm below standard position |
| 1535 | Commence LHe transfer (29.3%). |
| 1625 | End LHe transfer (92.0%). |
| 1630 | Release pressure from main bath. |
| 1655 | All pulses looking good. |
| Release pressure from Main Bath. | |
| 1700 | Fill LN2 cold trap full. |
| 1728 | Release pressure from main bath. |
| 1738 | Commence 12 hour bake. |