Can you take a vacuum system from atomspheric pressure to UHV quickly or without having to bakeout?

I have a fast-access door to my vacuum system that takes me to 5E-07 mBar from atmosphere pretty quickly. It doesn't improve a lot from baking at 70C. I need to go to 1E-09 mBar but with the same...

08 September 2014 2,434 17 View