Low-Temperature Thermal Properties from the EU Testing Program for Potential ITER Insulation

  • A. J. Broadbent
  • J. Crozier
  • P. McDonald
  • K. D. Smith
  • A. J. Street
  • J. M. Wiatrzyk
Part of the Advances in Cryogenic Engineering Materials book series (ACRE, volume 42)

Abstract

Insulation systems will be a key element in the future construction and impregnation of the coils for the ITER device. The thermal contraction and thermal conductivity of ten different electrical insulation systems are measured at temperatures from 4 K to 300 K. Several insulation systems incorporate an electrical barrier layer. The insulation systems are all based on identical S2-glass with various epoxy resins, some of which are not believed to have been previously used in superconducting coils. In particular resins with a high functionality are investigated, some of which are suitable for Vacuum Pressure Impregnation (VPI). The final results of this program are presented and compared to the results from a benchmark testing program (insulation system based on anhydride cured DGEBA resin and S2 glass).

This work is financed by the EU under NET contract ERB 5000 940023 (NET 93–857) within the framwork of ITER

Keywords

Aromatic Amine Acid Anhydride Thermal Contraction Insulation System Resin Functionality 
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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References

  1. 1.
    A. J. Broadbent, J. Crozier, K. D. Smith, A. J. Street, J. M. Wiatrzyk “Initial Results from the Testing of Potential ITER Insulation Materials” Cryogenics Vol 35: 11, (1995) Pages 701–703.CrossRefGoogle Scholar
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    A. J. Broadbent, S. Butt, J. Crozier, K. D. Smith, A. J. Street, J. M. Wiatrzyk. “Mechanical Test Results from the EU Testing Program for Potential ITER Insulation Material” to be presented at ICMC Columbus (1995).Google Scholar
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    P. Bruzzone, K. Nylund, W. J. Muster “Electrical Insulation system for Superconducting Magnets According to the Wind and React Technique” Adv in Cryo Eng (Mats), Vol 36 pp 999–1006. (1990)Google Scholar
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    P. E. Fabian, T. S. Bauer-McDaniel, R. P. Reed. “Low Temperature Thermal Properties of Composite Insulation Systems” Cryogenics Vol 35: 11, (1995) Pages 719–721.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • A. J. Broadbent
    • 1
  • J. Crozier
    • 1
  • P. McDonald
    • 2
  • K. D. Smith
    • 1
  • A. J. Street
    • 1
  • J. M. Wiatrzyk
    • 1
  1. 1.Oxford Instruments Special ProjectsEynsham, Witney, OxonEngland
  2. 2.Cryogenics Advisory UnitUniversity of SouthamptonSouthamptonEngland

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