Cryopump

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Cryopump


1. An exposed surface refrigerated to cryogenic temperature for the purpose of pumping gases in a vacuum chamber by condensing the gas and maintaining the condensate at a temperature such that the equilibrium vapor pressure is equal to or less than the desired ultimate pressure in the chamber.
2. The act of removing gases from an enclosure by condensing the gases on surfaces at cryogenic temperature.
Also referred to as a cryogenic pump and not to be confused with cryogenic fluid pump for circulating cryogenic propellants.

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use