Cryogenic materials for high field superconducting magnets

This paper reviews needs and current research relevant to materials for high field superconducting magnets. The review is written from an American perspective, but recognizes that much of the most important current research is done interactively in parallel programs in the United States and Japan. High field superconducting magnets are used principally for magnetic fusion energy devices and accelerators for research in particle physics. The advance of both technologies has increased the field, size and performance requirements of such magnets. More stringent requirements are expected in the future. The needed materials include both structural materials for the magnet case and support structure and high field superconducting wire for the magnet winding. Current research on both classes of materials is briefly described and discussed. (author)