| Setup | Run 73. DIB 1/3/4 → Stripline 43/48/41 → pi-filters 1/2/3 → Cable 3/1/2 → nothing/nothing/accessory_interposer → HV_Conn 1/3/2 → HV 1/2 → DCRCX(4)/DCRC55(1)-master; DCRC33(2) → HV control. DCRCs off. Lead/poly shield erected (4 lead walls, 2 poly walls). |
| Status | Warming up. Circulation and 1K Pot stopped yesterday. 1K Pot pumped out, presumably dry, and isolated. All mixture in dump. Fridge and 4He trap isolated. DCRCs, Arduino/motor driver, HV supply all off. MC and Still heaters on. Turbo pump still pumping on IVC, no gas in cryostat vacuum jacket. |
| 0445 | Recovery = 404800.20 cuft, 8.5 cuft/hr |
| 0745 | Tower/Sorb = 23.9/50.4 K. Should switch to Cernox thermometer, Tower thermometer calibration probably not good here. |
| 0750 | Turn off MC/Still Heaters. |
| 0750 | Close V9. Now all IGH valves closed. |
| 1109 | Recovery = 404855.11 cuft, 8.6 cuft/hr. After this the recovery rate drops suddenly, I guess maybe the liquid is almost all boiled off. |
| 1121 | Recovery = 404856. cuft, 4.7 cuft/hr. |
| 1240 | Tower thermometer starts rising faster around this time, possibly related to all the LHe now gone. |
| | Derek's body temperature: 97.5 °F |
| 1440 | Derek enters lab |
| 1510 | Switch from Tower thermometer to Cernox thermometer. It looks like the calibrations agree even at 26 K |
| 1525 | MC(Cernox)/Sorb = 27.0/75.9 K |
| 1540 | Remove lead from north wall of lead/poly shield. |
| 1600 | North wall of lead/poly shield removed. |
| 1615 | Lead removed from south wall of lead/poly shield. |
| 1620 | Derek leaves lab. |
| 1830 | Derek's body temperature 97.7 °F |