阐述了120k J高温超导储能磁体的高温超导带选择及磁体主要参数。为确定120k J高温超导储能磁体绕组的通电方式,比较了30个高温超导双饼线圈两种连接方式在225A电流下的磁场特性。为满足杜瓦强度要求,针对120k J高温超导储能磁体杜瓦开展了结构设计及强度分析,结果表明,杜瓦满足高温超导绕组吊挂对其强度的要求。 The selection of high temperature superconducting tape and the main parameters of the magnet for 120k J high temperature superconducting magnet are described. In order to determine the conduction mode of 120k J high temperature superconducting magnetic energy storage magnet windings, the magnetic field characteristics of two connections of 30 high temperature superconducting double pancake coils at 225A were compared. In order to meet the requirements of Dewar strength, the structural design and strength analysis of 120k J high temperature superconducting magnetic energy storage magnet Dewar were carried out. The results show that Dewar satisfies the requirement of high temperature superconducting winding for its strength.