Design study of superconducting magnets for uniform and high magnetic force field generation
Design study of superconducting magnets for uniform and high magnetic force field generation
复制标题
产生均匀高磁力场的超导磁体的设计研究
DOI：
10.1109/77.920308
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发表时间：
2001
影响因子：
1.8
通讯作者：
H. Wada
中科院分区：
文献类型：
--
作者：
O. Ozaki;T. Kiyoshi;S. Matsumoto;K. Koyanagi;J. Fujihira;H. Nakayama;H. Wada
磁力是在地球上实现虚拟微重力环境的最有前途的工具之一。研究发现，由于对流的抑制，微重力可能会影响蛋白质晶体的生长。我们开始开发超导磁体，以产生均匀和高磁力场，以抑制对流，因为目前尚不清楚什么样的超导线圈可以在保持其一致性的同时，产生最有效的高磁力场。为此，我们使用了一种非线性规划方法。结果表明，内线圈比外线圈长的磁体在较长的样本空间内可以产生更均匀和更高的磁力场。筑波磁学实验室已经用NbTi导体建造了一个磁场为240T/sup~2//m的超导磁体。我们还完成了由Nb/sub3/Sn和NbTi导体组成的超导磁体的设计，产生高达882T/sup2//m的均匀磁场。
Magnetic force is one of the most promising tools to realize a virtual microgravity environment on earth. It has been found that the growth of protein crystals might be affected by microgravity owing to the suppression of convectional flow. We started the development of superconducting magnets for the generation of uniform and high magnetic force fields to suppress convectional flow, as it was not clear what configuration of superconducting coils could generate most effectively high magnetic force fields, while they maintain their uniformity. For this purpose, we used a nonlinear programming method. The results obtained clarified that a magnet whose inner coil is longer than the outer one can generate more uniform and higher magnetic force fields in a long sample space. A superconducting magnet generating a magnetic force field of 240 T/sup 2//m has already been constructed with NbTi conductors at the Tsukuba Magnet Laboratory. We have also completed the design of a superconducting magnet composed of Nb/sub 3/Sn and NbTi conductors to generate uniform magnetic force fields up to 882 T/sup 2//m.