PERMANENT CURRENT SWITCH, SUPERCONDUCTING MAGNET DEVICE HAVING PERMANENT CURRENT SWITCH, AND METHOD OF MANUFACTURING COIL OF PERMANENT CURRENT SWITCH

摘要

PROBLEM TO BE SOLVED: To provide a permanent current switch capable of suppressing quenching without reference to the installing direction of a coil.;SOLUTION: The permanent current switch 5 for making a superconducting magnet 2 operates in a permanent current mode includes the coil 6 electrically connected to the superconducting magnet 2. The coil 6 includes a spool 20 and a current feeding body 30 having two superconducting wires 50a and 50b wound around the spool 20 and feeding currents in mutually opposite directions. The current feeding body 30 has a plurality of current feeding layers 31 to 33 formed by winding the two superconducting wires 50a and 50b in a solenoid shape so that they are arranged axially by turns, and stacked along a diameter of the coil 6. Further, the two superconducting wires 50a and 50b of the current feeding layers 31 to 33 are arrayed in the respective current feeding layers 31 to 33 so that the superconducting wires 50 are arrayed along the diameter of the coil 6, and the currents flow through the superconducting wires 50 arrayed along the diameter in the mutually opposite directions.;COPYRIGHT: (C)2010,JPO&INPIT