Cylindrical Magnetic Shield Consisting of Two C-Shaped Blocks with Magnetic Shaking Enhancement

• Tashiro Kunihisa

  Kyushu University

• Sasada Ichiro

  Kyushu University

抄録

This paper presents a new concept for a cylindrical magnetic shield with magnetic shaking enhancement. The shield consists of two C-shaped blocks. Magnetic shaking enhancement was properly applied to the block as a result of a closed magnetic flux pass. The shape of the shield is a double concentric shell with two magnetic shunts between the outer and inner shells. The effect of the shunts on shielding performance was analyzed using an FEM program. A prototype shield model, (length: 20cm, diameter: 7.5cm, shell thickness: 0.04mm), was made by winding a cobalt-based amorphous ribbon, Metglas2705M, twice around a paper tube cut in half transversally. A large and constant transverse shielding factor of 1, 000 was obtained even against a weak low-frequency magnetic field as low as 0.1Hz, 10nT.

収録刊行物

• Ｔｒａｎｓａｃｔｉｏｎｓ　ｏｆ　ｔｈｅ　Ｍａｇｎｅｔｉｃｓ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｔｒａｎｓａｃｔｉｏｎｓ　ｏｆ　ｔｈｅ　Ｍａｇｎｅｔｉｃｓ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 3 (2), 47-50, 2003

  社団法人 日本磁気学会

キーワード

• magnetic shield
• magnetic shaking enhancement
• C-shape block
• cylinder
• magnetic shunts

詳細情報

• CRID: 1390282680198289664
• NII論文ID: 110002666058
• NII書誌ID: AA1158094X
• DOI: 10.3379/tmjpn2001.3.47
• ISSN: 18846726
• ISSN: 13467948
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可