Cryogen-free superconducting magnets are becoming popular due to their simple operation compared with conventional liquid helium cooled magnets. JAPAN SUPERCONDUCTOR TECHNOLOGY INC. has manufactured more than a hundred cryogen-free superconducting magnets based on technologies developed by the R&D division of Kobe Steel. The company has the largest worldwide market share. This report describes the basic features of cryogen-free magnets, as well as related recent and future developments.
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