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Progress report on a cryomechanical vacuum pump prototype

✍ Scribed by JP Périn; D Henry; R Vallcorba; JJ Cordier; F Samaille

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
370 KB
Volume
48
Category
Article
ISSN
0042-207X

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✦ Synopsis

In this paper a novel concept of a mechanical pump is presented, able to run at low temperature (25K1, and an industrial prototype is described. Since gas density varies inversely with temperature, this pump would deliver a much higher mass flow rate than at room temperature for a given size. Advantages of this concept are an order of magnitude reduction in size and weight, when compared to a conventional pump scaled to perform the same mass flow rate at room temperature. A temperature gradient for the different pumping stages allows the exhaust pressure optimisation. This pump would be a solution to allow continuous tritium extraction and to minimise the mass inventory for fusion tokomaks fuel cycle control.

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