In this paper, we report our progress in the development of a low cost, liquid-helium-free MgB2 superconducting MRI magnet. Several technical issues related to the construction of such a magnet to operate in persistent current mode are discussed, namely, the performance consistency of long length MgB2 conductors, the fabrication of superconducting joints and persistent current switches. Quench detection and protection of such magnets operated in solid nitrogen environment are also discussed.

中文翻译：

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${\rm MgB}_{2}$ 用于 MRI 应用的线圈

在本文中，我们报告了我们在开发低成本、无液氦的 MgB2 超导 MRI 磁体方面的进展。讨论了与构建这种在持续电流模式下运行的磁体相关的几个技术问题，即长 MgB2 导体的性能一致性、超导接头的制造和持续电流开关。还讨论了在固氮环境中操作的此类磁体的淬火检测和保护。