Superconducting magnet, superconducting magnet coil, and manufacturing method thereof

摘要

A superconducting magnet coil, an insulating layer, and a superconducting magnet which do not generate quenching under cooled and operational conditions are provided by using a fixing resin (2) capable of suppressing microcrack generation in a resin layer which causes quenching. A superconducting magnet coil manufactured by winding a superconducting wire (3) and fixing the wire with resin (2) and a method for manufacturing thereof, wherein said resin (2) is a low cooling restricted thermal stress and high toughness fixing resin having a release rate of elastic energy GIC at 4.2 K of at least 250J.m<-><2>, and/or a stress intensity factor KIC of at least 1.5 MPa. 2ROOT m, and/or a stress safety factor at 4.2 K of at least 3, and an allowable defect size at least of 0.3 mm. The superconducting magnet coil manufactured in accordance with the present invention does not cause quenching because microcracks are not generated in said resin (2) when the coil is cooled to the liquid helium temperature, i.e. 4.2 K, and under an operational condition.