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Influence of Magnetic Property of Ferromagnetic Shield on High Field Magnet Analysis
| Title: | Influence of Magnetic Property of Ferromagnetic Shield on High Field Magnet Analysis |
| Authors: | Yoshizawa, Keisuke Browse this author | | Noguchi, So Browse this author →KAKEN DB | | Igarashi, Hajime Browse this author →KAKEN DB |
| Keywords: | High-temperature superconductors | | magnetic field analysis | | magnetic shielding | | MRI | | NMR |
| Issue Date: | Jun-2011 |
| Publisher: | IEEE |
| Journal Title: | IEEE Transactions on Applied Superconductivity |
| Volume: | 21 |
| Issue: | 3 |
| Start Page: | 2088 |
| End Page: | 2091 |
| Publisher DOI: | 10.1109/TASC.2010.2093859 |
| Abstract: | In this paper, an influence of a magnetic property of a ferromagnetic shield on design of a high field magnet, which generates high magnetic field with high homogeneity, such as NMR and MRI, is described. The NMR and MRI magnets often need the magnetic shield to protect an environment and to reduce a stray magnetic field. An iron shield used as a general magnetic shield typically has a nonlinear magnetic property. In magnetic analysis for the magnet design, we have to take into account the nonlinearity of the magnetic property of iron to compute the accurate magnetic field, since the ferromagnetic shield is exposed to so high magnetic field. That is, the iron is saturated in high magnetic field. So far the design of the high field magnets with the ferromagnetic shield exposed to over 2 T has been less reported. Recently, it was reported that the nonlinear magnetic properties of iron were measured at high magnetic fields over 2 T. The difference among the magnetic fields of the high field magnets with the ferromagnetic shield, computed by the finite element method with a few magnetization curves, is investigated. |
| Rights: | © 2010 IEEE. Reprinted, with permission, from Keisuke Yoshizawa, So Noguchi, and Hajime Igarashi, Influence of Magnetic Property of Ferromagnetic Shield on High Field Magnet Analysis, IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, June 2011. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Hokkaido University products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/46836 |
| Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 野口 聡
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