HTS COIL TECHNOLOGY FOR MAGNETIC RESONANCE SYSTEMS

调查人员建议做好准备，测试 我国高温超导陶瓷丝的研制 通过构建和缠绕原型在导管中形成电缆的形式 反应陶瓷的要点，如他们进一步描述的那样 摘要： ATC建议开发一种导管中电缆导线，该导线使用高密度的 用于未来高场磁共振的温度超导体(BSCCO 2212)， 磁铁在医学研究和临床实践中的应用。ATC的电缆设计 独一无二地解决了困扰所有努力的三个根本问题 到目前为止，要使这种脆性材料适应实际应用： *它控制电缆内的应力，以便BSCCO可以保持其全部 超导电流密度， *它控制线圈内电缆之间的应力，使其无法 通过线圈壳堆积， *它提供了在反应烘焙期间均匀加热线圈的功能 非常严格的温度调节和整个过程中氧气的利用率 线圈， *它为完成的盘管提供内部制冷， 消除了与更多 传统的冷冻法。 这些问题阻碍了实用高温超导技术的发展。 用于高场应用的线圈。ATC的列车长将第一次 时间使这种线圈变得可行。 王永平说：建议的第一期工程计划将支援 电缆及其制造工艺以及电缆的实际制造和测试 “绿色”州有线电视。拟议的第二阶段后续项目将 通过反应焙烧、卷取的优化进行发展 缠绕，并完成样机线圈。将对线圈进行测试 以评估其在MR应用程序中的性能。 建议的商业应用： 拟议中的超导电缆将真正彻底改变 高场磁铁的成像和光谱分析能力。如果没有 没有人知道如何用高温制作高场磁铁。 超导体。加上它，用于光谱分析的25特斯拉的字段应该是 可能的，紧凑的线圈，用于特殊目的成像。

The investigators propose to prepare to test the feasibility of developing a form of high temperature superconducting ceramic wire in the form of a cable in a conduit by building and winding a prototype up to the point of reacting the ceramic, as further described by their abstract: "ATC proposes to develop a cable-in-conduit conductor using high- temperature superconductor (BSCCO 2212) for use in future high-field MR, magnets in medical research and clinical practice. ATC's cable design uniquely solves three fundamental problems which have plagued all efforts to date to adapt this brittle material to practical applications: * it controls stress within the cable so the BSCCO can retain its full superconducting current density, * it controls stress between cables within a coil so that it cannot accumulate through a coil shell, * it provides for uniformly heating the coil during reaction bake with extremely tight temperature regulation and availability of O2 throughout the coil, * it provides for internal refrigeration of the completed coil, eliminating most of the cost and complexity associated with more conventional cryogenics. These problems have so far inhibited the development of practical HTS coils for high-field applications. ATC's conductor would for the first time make such coils feasible. "The proposed Phase I project would support the detailed design of the cable and its fabrication process, and actual fabrication and testing of the "green" state cable. The proposed follow-on Phase II project would carry the development through optimization of reaction bake, coil winding, and completion of prototype coils. The coils would be tested in background field to evaluate their performance for MR applications." PROPOSED COMMERCIAL APPLICATIONS: The proposed superconducting cable would truly revolutionize the capabilities of high-field magnets for imaging and spectroscopy. Without it no one knows how to make a highfield magnet using high-temperature superconductors. With it fields of 25 Tesla for spectroscopy should be possible, and compact coils for special-purpose imaging.