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Generation of liquid helium temperatures using a lead regenerator in a GM precooled pulse tube stage.

Author(s) : SCHNEIDEMESSER A. von, THUMMES G., HEIDEN C.

Type of article: Article

Summary

This paper describes the cooling performance of a pulse tube stage extending to room temperature which is precooled by a single-stage GM refrigerator. With this system it was possible to reach liquid helium temperatures without using rare earth compounds as regenerator material. Instead the regenerator was filled with conventional lead spheres. With the regenerator warm end being at a precooling temperature of about 31 K a minimum no-load temperature near 4.2 K at the cold end of the pulse tube was achieved. In the hybrid system a cooling power of 10 mW at 4.6 K, 100 mW at 6 K an 1 W at 9.2 K was achieved using a 6 kW helium compressor.

Details

  • Original title: Generation of liquid helium temperatures using a lead regenerator in a GM precooled pulse tube stage.
  • Record ID : 2001-0638
  • Languages: English
  • Source: Cryogenics - vol. 40 - n. 1
  • Publication date: 2000/01

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