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Forced Two-Phase Helium Cooling of Large Superconducting Magnets

  • M. A. Green
  • W. A. Burns
  • J. D. Taylor
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 35 A)

Abstract

A major problem with all large superconducting magnets is the cryogenic and refrigeration system. Almost all of the large magnets are cryogenically stabilized. They are cooled in a bath of boiling helium. Nucleate boiling in liquid helium permits heat fluxes of 3000 W/m2 to be transferred with a temperature drop of less than 0.5 K. The bath-cooled magnet is difficult to cool from room temperature to 4 K. Helium, which is a difficult fluid to use as a coolant because of its low atomic weight, must flow into each region of the magnet; if the flow in a section of the magnet is restricted, stratification occurs and that magnet section remains warm.

Keywords

Pressure Drop Heat Exchanger Liquid Helium Cooling Circuit Volumetric Efficiency 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1980

Authors and Affiliations

  • M. A. Green
    • 1
  • W. A. Burns
    • 1
  • J. D. Taylor
    • 1
  1. 1.Lawrence Berkeley LaboratoryBerkeleyUSA

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