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Performance of the supercritical helium cooling loop for the JET (Joint European Torus) divertor cryopump.

Author(s) : OBERT W., MAYAUX C., BARTH K., HERBLIN L.

Summary

The flow of the supercritical helium (6 g/s, 0.27 megapascal) is driven by the main compressor of the JET helium refrigerator passing a heat exchanger where it is subcooled at 4.1 K before entering the two cryopumps which are an assembly of two 60 meters long and 20 millimeters diameter corrugated stainless steel tubes. By using a dedicated cold ejector which is driven by the main flow and where the expansion from 1.2 to 0.27 megapascal takes place increases the flow of supercritical helium up to about 17 g/s.

Details

  • Original title: Performance of the supercritical helium cooling loop for the JET (Joint European Torus) divertor cryopump.
  • Record ID : 1997-2637
  • Languages: English
  • Source: Advances in cryogenic engineering.
  • Publication date: 1996/07/17
  • Document available for consultation in the library of the IIR headquarters only.

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