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VERSATILE EXPERIMENTAL LOW POWER 4 K CRYOCOOLER.

Author(s) : LAMBERT N., BARBANERA S., ZIMMERMAN J. E.

Type of article: Article

Summary

A LOW POWER CRYOCOOLER CONSISTING OF A FIVE-STAGE PLASTIC STIRLING COOLER WITH AN ADDITIONAL JOULE-THOMSON STAGE IS DESCRIBED. AMONG ITS NOVEL FEATURES ARE A CONTAMINATION-FREE, PNEUMATIC HELIUM COMPRESSOR AND DISPLACER DRIVE. VALVE TIMING IS UNDER COMPUTER CONTROL. TITANIUM FOIL EMBEDDED IN THE CYLINDER WALL REDUCES HELIUM DIFFUSION THROUGH THE PLASTIC. THE JOULE-THOMSON STAGE USES THE SAME LOW PRESSURE HELIUM AS THE STIRLING STAGES. THE STIRLING SYSTEM COOLS DOWN BELOW 9 K. THE JOULE-THOMSON STAGE DELIVERS A FEW MILLIW COOLING AT 4.2 K.

Details

  • Original title: VERSATILE EXPERIMENTAL LOW POWER 4 K CRYOCOOLER.
  • Record ID : 1987-0827
  • Languages: English
  • Source: Cryogenics - vol. 26 - n. 6
  • Publication date: 1986

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