Superconducting coil and superconducting coil device

Abstract

A superconducting coil includes: a winding member 12 that has a side surface 18 along a coil radial direction and is formed by laminating a superconducting tape wire 20 in the coil radial direction by winding; and a bypass 19 that is provided on the side surface 18 of the winding member 12 and electrically connects the superconducting tape wire 20 in the coil radial direction.

1 . A superconducting coil comprising:
 a winding member that has a side surface along a coil radial direction and is formed by laminating a superconducting tape wire in the coil radial direction by winding; and   a bypass that is provided on the side surface of the winding member and electrically connects the superconducting tape wire in the coil radial direction.   
     
     
         2 . The superconducting coil according to  claim 1 ,
 wherein a release agent for weakening adhesive force is provided between adjacent surfaces of the superconducting tape wire, the adjacent surfaces facing each other by the winding; and   the bypass is configured to connect turns of the superconducting tape wire to each other, the turns of the superconducting tape wire facing each other with the release agent interposed between the turns of the superconducting tape wire.   
     
     
         3 . The superconducting coil according to  claim 1 ,
 wherein the bypass is composed of a material that is larger in resistance than the superconducting coil in normal operation and is smaller in resistance than the superconducting coil in normal conductive transition.   
     
     
         4 . The superconducting coil according to  claim 1 ,
 wherein the bypass is composed of a normal conductor, a semiconductor, a ceramic material, or a superconducting material.   
     
     
         5 . The superconducting coil according to  claim 1 ,
 wherein the bypass is provided with a gap or a hole that adjusts a contact area with the side surface of the winding member.   
     
     
         6 . The superconducting coil according to  claim 1 ,
 wherein the bypass is formed by plating or coating.   
     
     
         7 . The superconducting coil according to  claim 1 ,
 wherein the side surface of the winding member is coated with conductive resin containing conductive powder; and   the bypass is formed of the conductive powder.   
     
     
         8 . The superconducting coil according to  claim 1 ,
 wherein the bypass is divided into plural sections in such a manner that the plural sections are arranged along a coil circumferential direction.   
     
     
         9 . The superconducting coil according to  claim 1 ,
 wherein the superconducting tape wire is a high-temperature superconducting tape wire.   
     
     
         10 . A superconducting coil device equipped with the superconducting coil according to  claim 1 . 
     
     
         11 . The superconducting coil device according to  claim 10 ,
 wherein a plurality of coils including the superconducting coil are stacked along a winding center   
     
     
         12 . The superconducting coil device according to  claim 11 ,
 wherein the superconducting coil is disposed at a position where a critical current value is low compared with other stacked coils.   
     
     
         13 . The superconducting coil device according to  claim 11 , further comprising coil-to-coil paths that are stacked and electrically connected to another adjacent coil. 
     
     
         14 . The superconducting coil device according to  claim 13 ,
 wherein coil-to-coil paths are different in conductivity from each other depending on the positions in a winding center direction.