Strain and Magnetic-Field Characterization of a Bronze-Route Nb3Sn ITER Wire: Benchmarking of Strain Measurements Facilities at NIST and University of Twente

N. Cheggour, Arend Nijhuis, Hendrikus J.G. Krooshoop, X.F. Lu, J. Splett, T.C. Stauffer, L. Goodrich, M.C. Jewell, A. Devred, Y. Nabara

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10 Citations (Scopus)

Abstract

A benchmarking experiment was conducted to compare strain measurement facilities at the National Institute of Standards and Technology (NIST) and the University of Twente. The critical current of a bronze-route Nb3Sn wire, which was fabricated for the International Thermonuclear Experimental Reactor (ITER), was measured as a function of axial strain and magnetic field in liquid helium at both institutes. NIST used a Walters' spring strain device and University of Twente used a bending beam (“Pacman”) apparatus. The ITER bronze-route wire investigated had a very high irreversible strain limit that allowed comparing data over a wide range of applied strain between -1% and +1%. Similarities of the data obtained by use of the two apparatuses were remarkable, despite the many differences in their design and techniques.
Original languageEnglish
Pages (from-to)6086717-
JournalIEEE transactions on applied superconductivity
Volume22
Issue number3
DOIs
Publication statusPublished - 2012

Keywords

  • METIS-289558
  • IR-82283

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