磁気シールド材料の内部磁界を考慮したボックスシールドの性能推定法とその精度検証

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2022/06/01

タイトル(英語): Prediction of Magnetic Shield Box Performance by Considering Magnetic Field Strength of Inside Material

著者名: 榊原　満（（株）オータマ／金沢工業大学），上原　弦（金沢工業大学），足立　善昭（金沢工業大学）

著者名(英語): Mitsuru Sakakibara (OHTAMA Co., Ltd./Kanazawa Institute of Technology), Gen Uehara (Kanazawa Institute of Technology), Yoshiaki Adachi (Kanazawa Institute of Technology)

キーワード: 磁気シールド，磁気シールドルーム，透磁率，パーマロイ，生体磁気計測，MEG　　magnetic shield，magnetically shielded room，permeability，permalloy，biomagnetic measurement，magnetoencephalograph

要約(英語): Magnetoencephalographs (MEGs) are highly sensitive to micromagnetic noises, and thus, a high performance magnetically shielded room (MSR) is essential. The shielding effect of a novel MSR should be predicted to verify if it satisfies the required specifications of the MEG at the design stage. Therefore, an accurate prediction method based on the properties of shielding materials and shape of the MSR is necessary. We examined four types of method to estimate μ and to predict the shielding effect. To verify the prediction accuracy, we estimated μ of a permalloy at very small magnetic field strength and predicted the shielding effect of a box-shaped shield, as simple examples, and compared the obtained result with the experimental result. The result of this study shows that some of the prediction methods have an error of less than 70% comparing with the experimental result.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.142 No.6 （2022） 特集：バイオ・医療における磁界・磁性材料の応用研究と産学官連携

本誌掲載ページ: 257-262 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/142/6/142_257/_article/-char/ja/