SUPERCONDUCTING ELECTROMAGNET DEVICE, COOLING METHOD THEREFOR, AND MAGNETIC RESONANCE IMAGING DEVICE

摘要

A superconducting magnet device is configured to include: a refrigerant circulation flowpath in which a refrigerant (R) circulates; a refrigerator for cooling vapor of the refrigerant (R) in the refrigerant circulation flowpath; a superconducting coil cooled by the circulating refrigerant (R); a protective resistor thermally contacting the superconducting coil and having an internal space (S); a high-boiling-point refrigerant supply section for supplying a high-boiling-point refrigerant having a higher boiling point than the refrigerant (R) and frozen by the refrigerant (R) to the internal space (S) in the protective resistor; and a vacuum insulating container for at least accommodating the refrigerant circulation flowpath, the superconducting coil, and the protective resistor.

主权项

1. A superconducting electromagnet device comprising:
a refrigerant circulation flowpath in which a refrigerant circulates; a refrigerator for cooling vapor of the refrigerant in the refrigerant circulation flowpath; a superconducting coil cooled by the circulating refrigerant; a protective resistor thermally contacting the superconducting coil and having an internal space; a high-boiling-point refrigerant supply section for supplying a high-boiling-point refrigerant to the internal space in the protective resistor, the high-boiling-point refrigerant having a higher boiling point than the refrigerant and being frozen by the refrigerant; and a vacuum insulating container for at least accommodating the refrigerant circulation flowpath, the superconducting coil, and the protective resistor.