PROBLEM TO BE SOLVED: To provide a reliable superconductive magnet device and a magnetic resonance imaging device, in which structure is simple, and a persistent current of a superconductive coil can be stably retained for the long term.SOLUTION: A superconductive magnet device 1 includes: a pair of coil containers 4 and 4 which accommodate a circularly-shaped superconductive coil 2 with a cooling medium a pair of vacuum containers 1A and 1B which accommodate coil containers 4 and 4, respectively a connecting tube 1C which supports the vacuum containers 1A and 1B, while opposing them to each other in the vertical direction, using a space between the vacuum containers 1A and 1B as a magnetic field space a superconductive wire 2A which is connected between the superconductive coil 2 and 2 of a pair of the coil containers 1A and 1B through the connecting tube 1C and a permanent current switch 7 which is connected to the superconductive wire 2A and passes permanent current to the superconductive coil 2. The permanent current switch 7 is arranged in the connecting tube 1C.COPYRIGHT: (C)2009,JPO&INPIT【課題】構造が簡単であるとともに、超伝導コイルの永久電流を長期的に安定保持することができ、信頼性の高い超伝導磁石装置および磁気共鳴撮像装置を提供する。【解決手段】超伝導磁石装置1は、環状に形成された超伝導コイル2を冷媒とともに収納する一対のコイル容器4,4と、各コイル容器4,4をそれぞれ収納する一対の真空容器1A,1Bと、真空容器1A,1B間を磁場空間として、各真空容器1A,1Bを上下方向に相対向させた状態で支持する連結管1Cと、連結管1Cを介して一対のコイル容器1A,1Bの超伝導コイル2,2間に接続された超伝導線2Aと、超伝導線2Aに接続され、超伝導コイル2に永久電流を流す永久電流スイッチ7と、を備え、連結管1Cに永久電流スイッチ7を配置した。【選択図】図2
