Today's activities:

- HAM7 turbo was valved out, and switched off. This pump needs ~3 hrs to spin down
- Immediately after this, FCV-2 was opened, so HAM7 was connected with the main volume via BSC3
- Then, RV1 (relay-tube remaining valve), FCV-4 and FCV-3 (valves towards HAM8 along the FCT) have been also opened

- Later, after the HAM7 turbo spun down, the backing supersucker cart was disconnected from it
- During the day, HAM6 RGA bakeout was ramped down. This RGA tree was also valved together with a small Ion-pump, which always keeps it under UHV.
- This RGA's filaments were also fired up. RGA scans of its small volume will be done in the upcoming days, then it will be valved together with the main volume (HAM6), and RGA scans will be done of HAM6, and these scans will be compared with the Corner RGA scan results

So, the interferometer is now fully open. The exact pumpdown time (from the start of the roughing to the opening of large GVs) was 14 days 17.25 hours. This is by far the shortest pumpdown so far. In dcc T2400085 the pumpdown will be more thoroughly analyzed, and will be compared with past pumpdowns, especially with the last one during February of 2024.

The pressures:
Corner (PT-120 and PT131): 6.3E-8 Torr
HAM6: 2.4E-7 Torr
HAM7: 1.25E-7 Torr
CP1: ~2.5E-8 Torr
CP2: ~5E-8 Torr