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PROBLEM TO BE SOLVED : To provide a lightweight and high-reliability superconducting magnet for a magnetic-levitation railway vehicle.
SOLUTION : A superconducting magnet for a magnetic-levitation railway vehicle is provided with superconducting coils 2 made of a rare-earth-element-based high-temperature superconductor. The superconducting coils 2 are cooled to below a temperature, at which a superconducting state occurs, only by a one-stage refrigerator 5.
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