[Steve, Eric]
I've been helping Steve vent this morning. The following things were done (from Steve's logbook):
- Particle counts: 0.5 micron particles, 4200 counts per cubic ft
- Vertex crane drive checked to be ok
- Optical Levers set for local damping only
- Saved some screens
- PSL shutter and green shutters closed
- HV Off checked, JAM nuts checked
- Vac: Close V1, VM1, ans - VA6, open VM3 - RGA, cond: chamber open mode
- 8AM: VV1 open to N2, regulator set to 14 psi
- 8:23AM: 35psi Instrument grade Air
(At this point, I took over the air canisters, while Steve made preparations around the lab.
- 9:00AM: 2nd air cylinder, 14 psi
- 9:40AM: 3rd air cyl
- 10:20AM: 4th air cyl
- 11:00AM: 5th air cyl
With the 5th cylinder, we began approaching 1 atm, so we slowed the regulator down to 5psi. Around 750 torr, Steve opened VV1 to air.
According to Steve, we will be at atmospheric pressure at ~12:30pm. |