Abstract

A Pulse tube cryocooler of simple structure without moving part in the expander has the advantage over a stirling cryocooler of low vibration and long life. So its wide uses for space crafts and high-temperature superconductor devices are extended. Recently Fuji Electric has developed a pulse tube cryocooler with cooling capacity of 2.5W at 70K, based on the technology of the stirling cryocooler for the space crafts. This paper describes the vibration measurement of a miniature pulse tube cryocooler.

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