Jordan, Travis, Janos

HAM1 pumpdown continued. The new Agilent leak checker is backing the turbo pump. We are waiting for the He-signal to be at least <5E-9 Torr, so we could start leak checking. After evaluating the trends, it is likely that tomorrow morning this happens. Also, regardless this happens, the Ion-pump (IP13) will be possible to be opened up. Also, an interesting note, that after achieving molecular flow in HAM1, the corner pressure suddenly decreased by ~5-6E-9 Torr, that suggests a E-3 Torrl/s gas load through the HAM1/HAM2 septum viewport O-rings, so there is indeed some communication between HAM1 and the rest of the corner.
The overall pressure in HAM1 in the end of the day is ~9E-6 Torr, which aligns well with fully gutted HAM chamber pumpdown speeds in the past.

The large Gate Valves, first GV7, then GV5 was opened. The fully open position was achieved at ~45 and ~47 psi, respectively. No issues were encountered during the process. The corner pressure went down quickly to ~3.5E-8 Torr. RGA scans are continuously being taken.