| 摘要 |
PURPOSE:To obtain a superconducting magnet device, which suppresses an eddy-current loss which is generated in an inner tank container during excitation and demagnetization of a superconducting coil and is capable of reducing the amount of evaporation of a refrigerant for cooling the coil. CONSTITUTION:In a superconducting magnet device, which comprises a superconducting coil 1 formed by winding a superconductive wire material, an inner tank container 2, which houses the coil 1, dipped in a refrigerant, and is surfaced with a low-electric resistance material 3, and an outer tank container, which houses the container 2 heat-insulated in a vacuum, and is provided on the side of a car body in opposition to a ground coil, the container 2 has a severed part in one part of the material 3 on the flow path of an eddy current in its surface and a high-electric resistance part 11 of the flow path of the eddy current is formed at this severed part. |
