Generation of the highest continuous magnetic fields
Generation of the highest continuous magnetic fields
复制标题
产生最高的连续磁场
DOI：
10.1109/tasc.2004.830543
复制
发表时间：
2004
影响因子：
1.8
通讯作者：
H. Weijers
中科院分区：
文献类型：
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作者：
H. Schneider;J. Toth;H. Weijers
最高磁场的产生对磁体设计师来说是一个真正的挑战，对材料科学家来说是一个刺激。通过对磁体物理学的精确理解、对可用材料的详细了解和有意识的使用以及优化所有不同参数的设计之间的成功相互作用，实现了记录字段。我们描述了产生最高磁场所必需的三种技术：在背景场中在液氦温度下运行的高温超导体（HTS）缠绕的线圈;高功率电阻磁体;以及联合收割机了电阻磁体和超导磁体优点的混合磁体。高温超导体在升高的磁场下显示出高电流密度，迄今为止通过高达33 T的测量证实。尽管导体的应变限制，但在不同的实验室中已经构建了高达3.2 T的插入线圈，总磁场为23.5 T。最近在NHMFL上用5 T Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub x/超导插入线圈获得了25 T的记录磁场。对于电阻磁铁，磁铁设计的巨大改进，如佛罗里达-比特磁铁，以及新材料，如微复合CuAg，使得现在可以产生超过10年前混合磁铁产生的磁场。今天，33 T是提供常规的基础上与电阻磁铁。新一代混合磁体可获得有史以来最高的45 T连续磁场。它可用于我们的用户设施的科学研究。
The generation of the highest magnetic fields is a true challenge to the magnet designer and a stimulus for the materials scientist. Record fields are achieved through a successful interplay between the precise understanding of the physics of magnets, the detailed knowledge and conscious use of the available materials, and a design that optimizes all the different parameters. We describe three technologies essential for the generation of the highest magnetic fields: coils wound from high-temperature superconductors (HTS) operated at liquid helium temperatures in a background field; high-power resistive magnets; and hybrid magnets, which combine the advantages of resistive and superconducting magnets. HTS show high current densities at elevated fields confirmed so far by measurements up to 33 T. In spite of the strain limitation of the conductor, insert coils up to 3.2 T have been built at different laboratories for a total field of 23.5 T. Recently a record field of 25 T using a 5 T Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub x/ superconducting insert coil has been achieved at the NHMFL. For resistive magnets, dramatic improvements in magnet design, such as the Florida-Bitter magnet, and new materials, such as the microcomposite CuAg, have made it possible that magnetic fields can now be generated that exceed the fields that hybrid magnets produced 10 years ago. Today, 33 T are provided on a routine basis with resistive magnets. The highest continuous magnetic field ever of 45 T is obtained with a new generation of hybrid magnets. It is available for scientific research in our user facility.
超导材料高场实验室磁体技术与材料研究
DOI：
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发表时间：
2004
期刊：
Physica B 346-347
影响因子：
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作者：
K.Watanabe;N.Kobayashi
通讯作者：
N.Kobayashi
高磁场实验室，佛罗里达州（美国）
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