Comparison between analytic and numerical approaches to calculate screening current induced field in HTS magnet

IF 0.2 Q4 PHYSICS, APPLIED

Progress in Superconductivity and Cryogenics Pub Date : 2019-01-01 DOI:10.9714/PSAC.2019.21.2.045

J. Bang, Seokho Kim, Jaemin Kim, Soobin An, C. Im, S. Hahn

引用次数: 0

Abstract

This paper reports comparison between analytic and numerical simulation approaches for calculation of screening current and screening current induced field in a high temperature superconductor magnet. Bean slab model is adopted to calculate screening current and SCF analytically, while the finite element method numerically. A case study of screening current and SCF calculation are conducted with a magnet, a 7 T 68 mm cold-bore multi-width no-insulation GdBCO magnet built and tested by Massachusetts Institute of Technology Francis Bitter Magnet Laboratory. In this study, we assume the magnet is dunked in liquid nitrogen at 77 K. Furthermore, the simulation results are compared in terms of computation time and accuracy. Finally, discussion on the different methods together with the comparison between the calculations and experiment is provided.

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解析法与数值法计算高温超导磁体屏蔽电流感应场的比较

本文报道了高温超导磁体中屏蔽电流和屏蔽电流感应场计算的解析方法与数值模拟方法的比较。采用Bean - slab模型对筛流和SCF进行解析计算，采用有限元法进行数值计算。以麻省理工学院Francis Bitter磁体实验室制造和测试的7 T 68 mm冷孔多宽无绝缘GdBCO磁体为例，进行了筛选电流和SCF计算的案例研究。在这项研究中，我们假设磁铁浸泡在77 K的液氮中。并从计算时间和精度两方面对仿真结果进行了比较。最后对不同的方法进行了讨论，并将计算结果与实验结果进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Progress in Superconductivity and Cryogenics PHYSICS, APPLIED-

CiteScore

0.40

自引率

33.30%

发文量

期刊介绍： Progress in Superconductivity and Cryogenics is the official publication of The Korea Institute of Applied Superconductivity and Cryogenics and the Korean Superconductivity Society. It was launched in 1999, and accepts original research articles and review papers on research on superconductivity and related fields of physics, electronic devices, materials science, large-scale applications for magnets, power and energy, and cryogenics. The Journal is published quarterly in March, June, September, and December each year. Supplemental issues are published occasionally. The official title of the journal is ''Progress in Superconductivity and Cryogenics'' and the abbreviated title is ''Prog. Supercond. Cryog.'' All submitted manuscripts are peer-reviewed by two reviewers. The text must be written in English. All the articles in this journal are KCI and SCOPUS as of 2015. The URL address of the journal is http://psac.kisac.org where full text is available. This work was supported by the Korean Federation of Science and Technology Societies grant funded by the Korea government.