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High frequency two-stage pulse tube cryocooler with base temperature below 20 K.

Author(s) : YANG L. W., THUMMES G.

Type of article: Article

Summary

This paper reports on the design and test of a two-stage pulse tube cooler which is driven by a linear compressor with nominal input power of 200 W at an operating frequency of 30-45 Hz. A parallel configuration of the two pulse tubes is used with the warm ends of the pulse tubes located at ambient temperature. For both stages, the regenerator matrix consists of a stack of stainless steel screen. At an operating frequency of 35 Hz and with the first stage at 73 K a lowest stationary temperature of 19.6 K has been achieved at the second stage. The effects of input power, frequency, average pressure, and cold head orientation on the cooling performance are also reported. An even lower no-load temperature can be expected from the use of lead or other regenerator materials of high heat capacity in the second stage.

Details

  • Original title: High frequency two-stage pulse tube cryocooler with base temperature below 20 K.
  • Record ID : 2005-2390
  • Languages: English
  • Source: Cryogenics - vol. 45 - n. 2
  • Publication date: 2005/02

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