| Status | Began circulation yesterday. Cf source on fridge for overnight activation. |
| 0840 | Tower/MC/Coldplate = 319/106/168 mK, Still = 1.17 K / 0.095 mbar, G1/G2 = 55/65 mbar, 1K Pot = 1.47K / 2.4 mbar, MB = 42.2% |
| | MC temperature decreasing continuously overnight, seems to be another slow cooldown.
G2 has been greater than G1 since circulation began, suggests maybe some impedance in LN2 Cold Trap 1 |
| 0845 | Remove Cf source from fridge and return to safe |
| 0850 | Fill LN2 cold trap bath
Open 1K Pot needle valve a few degrees further |
| 0855 | 1K Pot has gone up, and interestingly this caused the circulation pressures to increase significantly and improving the cooling power (tower is cooling faster) |
| 0900 | Tower/MC/Coldplate = 311/93/164 mK, Still = 1.26 K / 0.150 mbar, G1/G2 = 80/90 mbar, 1K Pot = 1.69 K / 26 mbar |
| 0925 | Apply 2 mW power to still. This causes a significant drop in MC temperature, 91→86 mK in 5 minutes |
| 0955 | Tower/MC/Coldplate = 296/84/157 mK, Still = 1.27 K / 0.160 mbar, G1/G2 = 75/90 mbar, 1K Pot = 1.64 K / 15 mbar |
| 0956 | HPGe crystal background run stopped. |
| 1200 | Filled HPGe dewar. |
| 1240 | Tower/MC/Coldplate = 248/74/141 mK, Still = 2 mW / 1.05 K / 0.140 mbar, G1/G2 = 65/80 mbar, 1K Pot = 1.55 K / 5 mbar |
| 1245 | Open 1K Pot needle valve a few degrees further |
| 1255 | Connect DCRCs 1/2/3 and power them on. Zap SQUIDs. (recall these are DCRC55/33/50, Revs C.1/C/C.1) |
| 1315 | Having difficulty triggering on the signal generator during SQUID tuning on DCRC1/DIB1. Waveform won't stay in place in pulse viewer. |
| 1519 | Commence LHe transfer (31.8%). |
| 1545 | Unpower DCRCs and restart MIDAS server. Repower DCRCs and zap SQUIDs. |
| 1605 | Cease LHe transfer (92.1%). |
| 1700 | Finish tuning SQUIDs with following values: |