PROBLEM TO BE SOLVED: To provide an MRI apparatus using a superconducting coil capable of maintaining a temperature of superconducting state while suppressing the power consumption of a refrigerator by cooling the superconducting coil to a temperature required for a superconducting state with heat removal means using a refrigerator comprising a heat transfer cooling member without using a liquid refrigerant and reducing the heat resistance of the contact face between the heat transfer cooling member and the superconducting coil.SOLUTION: The present invention relates to a superconducting magnet including a superconducting coil which uses a superconducting material for magnetic poles generating a static magnetic field and an MRI apparatus, the superconducting coil being annularly constructed of a good thermal conductive material such as a metal and installed contacting a heat transfer cooling member 11b which has a heat transfer path between a heat removal apparatus such as a refrigerator and the superconducting coil. The heat transfer cooling member 11b has a lattice-like slits 15 in a circumferential direction of the annular ring to allow for superior heat transfer in both circumferential and radial directions. In addition, the superconducting coil and the heat transfer cooling member 11b are integrally formed by resin hardening or adhesion.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】液体冷媒によらず、伝熱冷却部材を介した冷凍機による除熱手段によって超電導コイルを超電導状態に必要な温度まで冷却し、伝熱冷却部材と超電導コイルとの接触面の熱抵抗を小さくすることで、冷凍機の消費電力を抑えつつ、超電導状態の温度を維持することが可能な超電導コイルを使用したMRI装置を提供する。【解決手段】静磁場を発生する磁極に超電導材質を使用した超電導コイルを有する超電導磁石およびMRI装置において、超電導コイルは金属などの良熱伝導材質で円環状に生成され、冷凍機等の除熱装置との間に伝熱経路を有する伝熱冷却部材と互いに接触して設置される。伝熱冷却部材11bは円環の周方向に格子状のスリット15を有することで、周方向と径方向双方の伝熱が良好となる。また、超電導コイルと伝熱冷却部材11bは樹脂硬化または接着によって一体となっている。【選択図】図1
