| MgB_2/Fe超导磁体磁场分布的数值分析 |
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| 引用本文： | 杜晓纪,金明剑,李晓航,张东,肖立业,张国民. MgB_2/Fe超导磁体磁场分布的数值分析[J]. 稀有金属材料与工程, 2008, 0(Z4) |
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| 作者姓名： | 杜晓纪 金明剑 李晓航 张东 肖立业 张国民 |
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| 作者单位： | 中国科学院应用超导重点实验室;中国科学院电工研究所;中国科学院研究生院;中国人民解放军信息工程大学; |
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| 基金项目： | 国家自然科学基金(50677067); 全国博士学位论文作者专项资金资助项目(200750)资助 |
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| 摘 要： | 为了获得高分辨率的稳定清晰图像,用于磁共振成像(MRI)系统的超导磁体应在一定区域内产生高均匀度的磁场,而MgB2/Fe超导带材中的Fe包套材料的磁化作用会影响到空间磁场的分布。因此在设计基于MgB2/Fe复合超导带材的MRI超导磁体时,Fe对磁场分布的影响是需要考虑的关键问题之一。本文使用有限元方法计算MgB2/Fe超导带材的工程磁导率μeng,并在此基础上研究Fe的非线性磁化特性对磁体磁场分布的影响,可为MRI用MgB2/Fe超导磁体的应用提供分析方法上的依据和参考。
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| 关 键 词： | Fe包套 MgB2 超导磁体 磁场分布 MRI |
Numerical Analysis on Magnetic Field Distributing of MgB_2/Fe Superconducting Magnet by Finite Element Method |
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| Du Xiaoji,,,Jin Mingjian,Li Xiaohang,Zhang Dong,Xiao Liye,Zhang Guomin. Numerical Analysis on Magnetic Field Distributing of MgB_2/Fe Superconducting Magnet by Finite Element Method[J]. Rare Metal Materials and Engineering, 2008, 0(Z4) |
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| Authors: | Du Xiaoji Jin Mingjian Li Xiaohang Zhang Dong Xiao Liye Zhang Guomin |
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| Affiliation: | Du Xiaoji1,2,3,Jin Mingjian1,Li Xiaohang1,Zhang Dong1,Xiao Liye1,Zhang Guomin4 (1. Key Laboratory of Applied Superconductivity,Chinese Academy of Sciences,Beijing 100080,China) (2. Institute of Electrical Engineering,China) (3. Graduate School of the Chinese Academy of Sciences,Beijing 100039,China) (4. The PLA Information Engineering University,Zhengzhou 450052,China) |
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| Abstract: | The superconducting magnet for Magnetic Resonance Imaging (MRI) system must produce a high-homogeneous magnetic field to get high definitional image. But the non-linear magnetization characteristic of Fe affects the magnetic field distribution of MgB2/Fe superconducting magnet. Therefore the effect of Fe-magnetization on magnetic field distribution must be calculated in designing the MgB2/Fe superconducting magnet for MRI. In this work, the MgB2/Fe tape is described as a homogeneous material with the engine... |
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| Keywords: | iron sheath MgB2 superconducting magnet magnetic field distributing Magnetic Resonance Imaging |
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