Performance enhancement under bending of Nb3 Sn strands with untwisted filaments

L. Muzzi, V. Corato, R. Viola, A. Della Corte

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Abstract

We report on the effect of bending strain on the transport properties of multifilamentary Nb3 Sn strands having twisted or untwisted superconducting filaments in order to clarify some aspects of the current transfer process within the wire cross section. Critical current measurements were performed on internal tin Nb3 Sn strands, which were inserted and compacted inside thin stainless steel tubes before the heat treatment. With the application of a maximum bending strain of 0.5%, the strands with twisted filaments present a degradation of the critical current and of the n -index, while an enhancement of the performances is observed for the untwisted strands. The experimental results are interpreted in relation to the predictions of Ekin's model. © 2008 American Institute of Physics.
Original languageEnglish
Article number073915
Pages (from-to)-
JournalJournal of Applied Physics
Volume103
Issue number7
DOIs
Publication statusPublished - 2008
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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