Pumping systems for low atmosphere

Some notes on pumping systems for low atmosphere sealed environments. The brief notes here cover diffusion, cryogenic and turbomolecular. There are a few other ways to achieve low atmosphere than the ones listed here.


Cryogenic

Diffusion

The diff pumps I was around were very large and could sound like a jet taking off if you were in the same room when the chamber was sent on its way to pump down to low atmosphere. It was intuitive to build a separate room behind the chambers in the lab to house the pumping system. Here is a link below to a diff related article
http://www.coaterstech.com/2014/03/equipment-failure-can-be-missed.html


Turbomolecular


https://www-alt.gsi.de/informationen/wti/library/scientificreport2002/files/Tech_Dv.pdf

https://www.youtube.com/watch?v=qMi7PnsJHEw












http://www.coaterstech.com/2014/03/3d-printing-of-ophthalmics.html