| 1515 | IVC pressure 4E-6 mbar. Open up line to leak checker and isolate turbo pump in preparation for nitrogen blow-out. |
| 1525 | Background helium leak rate 4.8E-9 mbar l/s. Isolate He-4 pump after evacuating helium gas line. Commence nitrogen blow-out. |
| 1550 | Mixing chamber temperature 77.1 K. Conduct electrical check: no major problems. QET & QET Return lines to ground yield around 2 nS & 1 nS on DIBs 1 (stripline 27) & 2 (stripline 19) respectively. Nothing to worry about during this run, but may affect a future 100 mm IZIP detector test. |
| 1620 | Nitrogen blow-out complete. Helium leak rate gradually rose to 6.8E-9 mbar l/s: no gross leak. |
| 1645 | Evacuate main bath. Evacuate 1 K pot. Overpressurise main bath with He-4 gas. Background helium leak rate 9E-9 mbar l/s. Helium leak rate rises to 9.5E-9 mbar l/s: no gross leak. |
| | Isolate leak checker and evacuate IVC with turbo pump. |
| 1740 | Pump mixture out of cryopump into dump using He-3 pump. |
| | Isolate IVC at pressure of 3.4E-6 mbar. Start evacuating helium transfer stick with turbo pump. Pressure inside helium transfer stick's vacuum jacket reached 4E-2 mbar before falling. |
| 1815 | Pressure in helium transfer stick's vacuum jacket 1E-4 mbar. Stop pumping on vacuum jacket. |
| | Recommence evacuating IVC with turbo pump. |
| | Cease pumping on cryopump with He-3 pump. Pressure in dump 702 mbar - lower than that in March (715 mbar), but it is cooler in the laboratory. Therefore, this is probably fine and we haven't lost any mixture. |
| 1840 | Fill N2 cold trap full. Isolate nitrogen cold trap 1. Start cryocleaning mixture through nitrogen cold trap 2. |
| 1850 | Fill IVC with 0.016 mbar He-4 exchange gas. |
| 1907 | Commence first helium transfer. |
| 2210 | End helium transfer (91.6%). |