Abstract: According to one embodiment, there is provided a superconducting magnetic apparatus that conductively cools a superconducting coil contained in a vacuum container with a cryogenic refrigerator. The superconducting magnetic apparatus includes a thermal conductor thermally connecting a cooling stage of the cryogenic refrigerator to the superconducting coil, a radiation blocking layer provided around the superconducting coil, and a coil supporting body supporting the superconducting coil by partial or entire contact with a surface of the superconducting coil.

Abstract: A superconducting magnet device for a single crystal pulling apparatus is arranged outside a pulling furnace containing a crucible for melting a single crystal material therein so as to apply a magnetic field to the melted single crystal material. The superconducting magnet device for a single crystal pulling apparatus includes a cryostat containing a superconducting coil therein, and a refrigerator port arranged on the outer circumferential surface of the cryostat and provided with a cryogenic refrigerator that cools the superconducting coil. The cryogenic refrigerator is provided in a region of the outer surface region of the cryostat at which the intensity of the magnetic field generated by the superconducting coil is weak.

Abstract: A superconducting magnet device for a single crystal pulling apparatus is arranged outside a pulling furnace containing a crucible for melting a single crystal material therein so as to apply a magnetic field to the melted single crystal material. The superconducting magnet device for a single crystal pulling apparatus includes a cryostat containing a superconducting coil therein, and a refrigerator port arranged on the outer circumferential surface of the cryostat and provided with a cryogenic refrigerator that cools the superconducting coil. The cryogenic refrigerator is provided in a region of the outer surface region of the cryostat at which the intensity of the magnetic field generated by the superconducting coil is weak.

Abstract: According to one embodiment, there is provided a superconducting magnetic apparatus that conductively cools a superconducting coil contained in a vacuum container with a cryogenic refrigerator. The superconducting magnetic apparatus includes a thermal conductor thermally connecting a cooling stage of the cryogenic refrigerator to the superconducting coil, a radiation blocking layer provided around the superconducting coil, and a coil supporting body supporting the superconducting coil by partial or entire contact with a surface of the superconducting coil.

Abstract: A single crystal pulling device is composed of a cylindrical pulling furnace, a crucible disposed in the pulling furnace in which a single crystal material for a semiconductor is poured, a cylindrical vacuum vessel coaxially disposed around the pulling furnace, and a superconducting magnet composed of a plurality pairs of coils arranged inside the vacuum vessel so as to generate magnetic field. The superconducting coils are arranged on the same horizontal plane of the cylindrical vacuum vessel, and each of the paired superconducting coils includes coils set so as to oppose to each other with respect to a central axis of the cylindrical vacuum vessel so that one coil of one pair of coils and one coil of another pair of coils adjacent to that one pair of coils constitutes a set angle, directing towards the inside of the cylindrical vessel, in a range of 100° to 130°.

Abstract: A single crystal pulling device is composed of a cylindrical pulling furnace, a crucible disposed in the pulling furnace in which a single crystal material for a semiconductor is poured, a cylindrical vacuum vessel coaxially disposed around the pulling furnace, and a superconducting magnet composed of a plurality pairs of coils arranged inside the vacuum vessel so as to generate magnetic field. The superconducting coils are arranged on the same horizontal plane of the cylindrical vacuum vessel, and each of the paired superconducting coils includes coils set so as to oppose to each other with respect to a central axis of the cylindrical vacuum vessel so that one coil of one pair of coils and one coil of another pair of coils adjacent to that one pair of coils constitutes a set angle, directing towards the inside of the cylindrical vessel, in a range of 100° to 130°.