Comparison of Critical Current Versus Axial Strain Measurements on Internal Tin Nb3Sn Strand at ASIPP and University of Twente

F. Liu, A. Nijhuis, H.J.G. Krooshoop, R. Wu, H.J. Liu, F. Long, B. Liu, Y.F. Tan

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)

Abstract

In the last decades, various methods have been used to characterize superconducting behavior versus axial strain. In cooperation with the University of Twente (UT), the Institute of Plasma Physics Chinese Academy of Sciences (ASIPP) built a facility practically similar to the so-called “Pacman” spring device. The facility allows critical current measurements of an Nb3Sn strand at different temperature, magnetic field and applied axial strain. In the process of validating the new setup, an ITER Internal-Tin (IT) strand, which has also been measured at the UT, is tested with the ASIPP Pacman. The ITER IT wire has an irreversible strain limit around +0.3%. At ASIPP, the strand was characterized in a magnetic field from 10 to 13 T and applied axial strain from -0.7% to +0.5%. Similarities of the data obtained (IC(ε), IC(B) and irreversible strain limit) from the two institutes were remarkable.
Original languageEnglish
Article number8400504
JournalIEEE transactions on applied superconductivity
Volume25
Issue number3
DOIs
Publication statusPublished - 2015
Event2014 Applied Superconductivity Conference, ASC 2014 - Charlotte Convention Center, Charlotte, United States
Duration: 10 Aug 201415 Aug 2014
http://ascinc.org/2014/

Keywords

  • Critical current
  • Nb3Sn
  • Pacman
  • Strain

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