초록 ▼

A superconducting magnet system, such as an NMR apparatus, is outfitted with a compact-size refrigerator that prevents mechanical vibrations produced by the refrigerator from being transmitted to the superconducting magnet system. The refrigerator is in the form of a pulse tube refrigerator having a

A superconducting magnet system, such as an NMR apparatus, is outfitted with a compact-size refrigerator that prevents mechanical vibrations produced by the refrigerator from being transmitted to the superconducting magnet system. The refrigerator is in the form of a pulse tube refrigerator having a cold head and a pressure oscillation generating source. The cold head of the pulse tube refrigerator is connected directly to a vacuum insulation vessel of the superconducting magnet system. Cold generated from the cold head cools a cooling device, for example, a liquid helium tank for cooling the superconducting coil, or a heat penetration reducing device, for example, a liquid nitrogen tank, for reducing heat penetration from outside.

대표청구항 ▼

[ What is claimed is:] [1.] A superconducting magnet system comprising a vacuum insulation vessel, a superconducting magnet disposed in the vacuum insulation vessel, cooling means for cooling the superconducting magnet, and a pulse tube refrigerator that includes a pressure oscillation generating so

[ What is claimed is:] [1.] A superconducting magnet system comprising a vacuum insulation vessel, a superconducting magnet disposed in the vacuum insulation vessel, cooling means for cooling the superconducting magnet, and a pulse tube refrigerator that includes a pressure oscillation generating source and a low temperature generating unit, said low temperature generating unit being connected to the vacuum insulation vessel, the low temperature generating unit having a cold head that generates cold for facilitating cooling of the cooling means.