Following the recent worldwide progress in plasma physics for fusion technology, it is desired 1.high field, 2.high current density, 3.high rigidity, 4.long pulsed (or continuous) operation, and so on-for the forecoming nuclear fusion experimental facilities. It is, therefore, worldwide trend that these facilities are designed to be superconductive.
In this article, after the review on recent progress in superconducting materials development including newly discovered high T
c oxide superconductors, several hurdles which must be cleared for the development of wires and/or conductors for high field large scale superconducting magnets will be discussed.
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