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Analysis on the Pumping Characteristics of a Commercial Cryopump  

인상렬 (한국원자력연구소)
박미영 (한국원자력연구소)
Publication Information
Journal of the Korean Vacuum Society / v.12, no.2, 2003 , pp. 86-92 More about this Journal
Abstract
The pumping characteristics of a commercial UHV cryopump with a G-M refrigerator for various gases were investigated. The pumping speeds as a function of pumped amount of $H_2,\; D_2,\; He,\; Ar,\; N_2$, CO and the pumping capacity of $N_2$ were measured and the trend was theoretically analyzed. The spectrum change of the residual gas was also investigated during cyropump operation.
Keywords
cryopump; pumping speed; pumping capacity; activated carbon; sorption;
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