Development of 1 GHz superconducting NMR magnet at TML/NRIM
Development of 1 GHz superconducting NMR magnet at TML/NRIM
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TML/NRIM 开发 1 GHz 超导 NMR 磁体
DOI：
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发表时间：
1999
影响因子：
1.8
通讯作者：
Y. Kawate
中科院分区：
文献类型：
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作者：
T. Kiyoshi;A. Sato;H. Wada;S. Hayashi;M. Shimada;Y. Kawate
国家金属研究所筑波磁铁实验室正在开发1 GHz超导NMR磁铁。磁铁将由两部分组成。LTS线圈的外部磁体设计为在持续电流模式下产生21.1 T（900 MHz）的磁场。内部线圈设计用于产生额外的2.4 T，在室温下在54 mm直径的孔中产生23.5 T（1 GHz）的中心场。作为高分辨率NMR磁体，场稳定性以及场均匀性是非常重要的，当暴露于超导磁体尚未遇到的极高磁场时，这在内部线圈中尤其难以实现。工程设计已经完成，超导体的制造已经开始。本报告介绍了内线圈候选超导体的工程设计和研发研究结果，如BSCCO，以及改进的Nb/sub 3/Al和Nb/sub 3/Sn。
Development of a 1 GHz superconducting NMR magnet is in progress at the Tsukuba Magnet Laboratory of the National Research Institute for Metals. The magnet will consist of two parts. The outer magnet of LTS coils is designed to generate a field of 21.1 T (900 MHz) in persistent current mode. The inner coil is designed to generate an additional 2.4 T, resulting in a central field of 23.5 T (1 GHz) in a 54 mm diameter bore at room temperature. As a high-resolution NMR magnet, field stability as well as field homogeneity is very important, which is especially difficult to achieve in the inner coil when exposed to extremely high magnetic fields that superconducting magnets have not yet encountered. The engineering design is complete and fabrication of the superconductors has begun. This report presents the results of the engineering design and R&D studies on the candidate superconductors for the inner coil, such as BSCCO, and improved Nb/sub 3/Al and Nb/sub 3/Sn.