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

Satoshi Ujigawa, Toshifumi Shinnoh, Norio Takahashi, Daisuke Miyagi

Research output: Contribution to journalArticlepeer-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 languageEnglish
Article number6136786
Pages (from-to)179-182
Number of pages4
JournalIEEE Transactions on Magnetics
Volume48
Issue number2
DOIs
Publication statusPublished - 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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