Study of numerical method for magnetic shielding problem considering actual measurement of magnetic environment

Satoshi Ujigawa; Toshifumi Shinnoh; Norio Takahashi; Daisuke Miyagi

doi:10.1109/TMAG.2011.2175709

Study of numerical method for magnetic shielding problem considering actual measurement of magnetic environment

Satoshi Ujigawa, Toshifumi Shinnoh, Norio Takahashi, Daisuke Miyagi

ENG - Electrical Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

A critical consideration in the optimal design of magnetically shielded rooms is the manner in which an external magnetic field, which should be shielded, is imposed on a target area. In this paper, we examined the possibility of applying the bf B} _{\rm s} method (the method of which the magnetic field bf B} _s in the analyzed region is given) to the shielding problem with a measurement-based magnetic field, which includes an irrotational field component as noise, and, therefore, is inconsistent with Maxwell's equations. We show that the bf B _s method has a well-defined physical meaning for such an irrotational field component. Furthermore, we explain why the convergence and the accuracy of the bf B _s method are better than those of the A method.

Original language	English
Article number	6136786
Pages (from-to)	179-182
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	48
Issue number	2
DOIs	https://doi.org/10.1109/TMAG.2011.2175709
Publication status	Published - 2012 Feb 1

Keywords

Finite element method
irrotational field component
magnetic environment
magnetic shielding
measurement noise

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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AU - Takahashi, Norio

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