Effects of Diffusion Barrier on the Magnetization Cycles of Nb3Sn Strand for ITER Conductor

P. Gislon, S. Chiarelli, M. Spadoni, R. Garré, L. Bottura, S. Conti

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High performance Nb3Sn strands for the high field ITER (Internationa] Termonuclear Experimental Reactor) magnets have been manufactured using diffusion barriers among the multifilamentary cores and the stabilizing copper. In the conductor development programme, billets using a single Ta or a double NbV barrier have been assembled. The barrier is shown to have an influence on magnetization characteristics. The measurements on samples from the two types of strands are shown and analyzed to correlate them with the magnetic behaviour of Nb at low field. The results show that at low field hysteretic losses are greatly increased by the pure Nb of the barrier. At high field, losses of samples with Ta barrier are larger, due to their higher Jc. © 1995 IEEE
Original languageEnglish
Pages (from-to)1917 - 1920
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - 1995


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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