Bench Mark Testing of Nb3Sn Strands for the ITER Model Coil

  • P. Bruzzone
  • H. H. J. ten Kate
  • M. Nishi
  • A. Shikov
  • J. Minervini
  • M. Takayasu
Part of the Advances in Cryogenic Engineering Materials book series (ACRE, volume 42)

Abstract

The Model Coils for the ITER project (International Thermonuclear Experimental Reactor) use high performance Nb3Sn strands with large non-Cu critical current density and moderate hysteresis losses. From the first industrial supplies of four strand types, standard specimens have been prepared at MIT and distributed to the laboratories of the four ITER Home Teams. A testing action has been carried out on identical specimens with a common test programme, including critical current, n value, hysteresis and coupling current losses, RRR, twist pitch, Cu: non-Cu ratio and Cr plating thickness. The agreement on the test results is satisfactory for most of the test items, giving evidence of reproducible procedure for sample preparation and good accuracy of the test equipment. Only for the AC losses test, the scattering of the test results is large, requiring further analyses and/or action to solve the discrepancies.

Keywords

Hysteresis Loss International Thermonuclear Experimental Reactor Bench Mark Twist Pitch Bench Mark Action 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    P. Bruzzone ct al., Conductor fabrication for the ITER model coils, presented at MT-14 Conference, to be published in IEEE Trans on MAG 32, June 96 Google Scholar
  2. 2.
    N. Mitchell et al., Strand production and bench mark testing for the ITER Model Coil, presented at ASC 94 Boston, to be published in IEEE Trans on Applied Superconductivity 5, 1995 Google Scholar

Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • P. Bruzzone
    • 1
  • H. H. J. ten Kate
    • 2
  • M. Nishi
    • 3
  • A. Shikov
    • 4
  • J. Minervini
    • 5
  • M. Takayasu
    • 5
  1. 1.ITER Joint Central TeamNaka-machi, Naka-gun, IbarakiJapan
  2. 2.Department of Applied PhysicsUniversity of TwenteEnschedethe Netherlands
  3. 3.Japan Atomic Energy Research InstituteNaka-machi, Naka-gun, IbarakiJapan
  4. 4.Bochvar All Russian Scientific Research Institute of Inorganic MaterialMoscowRussia
  5. 5.Plasma Fusion CenterMassachusetts Institute of TechnologyCambridgeUSA

Personalised recommendations