Superconducting magnet

#The present invention relates to a superconducting magnet.

#Background art of the technical field can be found in Japanese Unexamined Patent Application Publication No. 2012-238628 (Patent Literature 1). This literature describes that “it is an object of the invention to provide a high-temperature superconducting magnet capable of detecting with a high accuracy a voltage at which a quench occurs which corresponds to a normal conduction transition phenomenon of a superconducting coil and thereby quickly detecting an occurrence of the quench and performing a protective operation, in which the occurrence of the quench is detected by winding the superconducting magnet with a parallel conductor constituted by electrically connecting constituent conductors each other by at least two points, arranging voltage terminals at a superconducting wire rod in each section of the electrically connected parallel conductor, and observing the potential difference.”

#Moreover, there is also Japanese Unexamined Patent Application Publication No. Hei 8(1996)-304271 (Patent Literature 2). This literature describes that “aiming at providing an apparatus and a method for detecting a quench occurrence capable of sensing a minute change thereof and observing the change of a whole system at an initial stage of the quench occurrence, the apparatus for detecting the quench of a superconducting wire rod detects by using an optical fiber wound around the superconducting wire rod, a light source emitting a deflected beam into the optical fiber, and a device that detects a polarization from the optical fiber.”

#FIG. 1 A configuration diagram of a superconducting coil that senses a temperature increase according to a first embodiment of the present invention.

#FIG. 2 An exemplary circuit diagram of the superconducting magnet that senses the temperature increase according to the first embodiment of the present invention.

#FIG. 3 An exemplary configuration diagram of a superconducting coil that requires no voltage terminal within a winding according to a second embodiment of the present invention.

#Hereinbelow, embodiments of the present invention will be described with reference to drawings.

#A superconducting magnet 1 of this embodiment will be described with reference to FIGS. 1 and 6.

#FIG. 6 shows a basic configuration of the superconducting magnet 1. As shown in FIG. 6, the basic configuration of the superconducting magnet 1 includes a superconducting coil 2 and a cryostat 36.