Open Access

ARTICLE

Numerical Simulation on the Shielding Efficiency of Magnetic Shielding Enclosures in the ITER Applications

by Yong Kou¹, Ke Jin¹, Xiaojing Zheng¹

1 Key Laboratory of Mechanics on Environment and Disaster in Western China, The Ministry of Education of China, and Department of Mechanics and Engineering Sciences, School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
2 Author to whom correspondence should be addressed; electronic mail: xjzheng@lzu.edu.cn

* Corresponding Author:Email::

Computers, Materials & Continua 2011, 22(2), 129-146. https://doi.org/10.3970/cmc.2011.022.129

Abstract

Magnetic shielding needs to be employed to ensure proper operation of some electronic equipment which are sensitive to external magnetic interference, such as cryogenic valves located inside the ITER feeder cubicles. This paper is concerned with the shielding efficiency of the magnetic shielding enclosures. A 3-D theoretical model for Fe-Ni alloy magnetic shielding enclosures based on finite element method (FEM) is obtained with the nonlinear law of magnetization. The influence of shielding materials, enclosure configurations, single or multi- layer designs, and apertures on the shielding efficiency is investigated. It is shown that the proposed model can predict the shielding efficiency of shielding devices well with nonlinear magnetize relation, and some recommendations for an optimized magnetic shield design in the ITER feeder cubicles are given.

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Keywords

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