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Basics and applications of cryopumps - CERN

Basics and applications of cryopumps C. Day Forschungszentrum Karlsruhe, Institute of Technical Physics, 76344 Eggenstein-Leopoldshafen, Germany Abstract This report introduces the wide field of cryogenic pumping, from commercial cryogen-free refrigerator cryopumps to very special, tailor-made cryopumps . It starts with a short historic overview of the field of cryopumping. Then, the principles of cryogenic pumping via sublimation/condensation and physisorption are introduced, and we illustrate how they are exploited to derive a design for a usable cryopump. In the third part, typical characteristics of cryosorption pumps are discussed.

Basics and applications of cryopumps C. Day Forschungszentrum Karlsruhe, Institute of Tec hnical Physics, 76344 Eggenstein-Leopoldshafen, Germany Abstract This report introduces the wide field of cryogenic pumping, from commercial cryogen-free refrigerator cryopumps to very special, tailor-made cryopumps.

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