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Structure and magnetic field of periodic permanent magnetic focusing system with open magnetic rings

机译:开磁环的周期性永磁聚焦系统的结构和磁场

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摘要

The magnetic field along the central axis for an axially magnetized permanent magnetic ring was investigated by analytical and finite element methods. For open magnetic rings, both calculated and measured results show that the existence of the radial magnetic field creates a remarkable cosine distribution field along the central axis. A new structure of periodic permanent magnet focusing system with open magnetic rings is proposed. The structure provides a satisfactory magnetic field with a stable peak value of 120 mT for a traveling wave tube system.
机译:通过分析和有限元方法研究了轴向磁化的永磁环沿中心轴的磁场。对于开放式磁环,计算结果和测量结果均表明,径向磁场的存在沿中心轴产生了显着的余弦分布场。提出了一种具有开放磁环的周期性永磁聚焦系统的新结构。该结构为行波管系统提供了令人满意的磁场,其峰值稳定在120 mT。

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  • 来源
    《Journal of magnetism and magnetic materials》 |2011年第12期|p.1686-1691|共6页
  • 作者单位

    College of Optoelectronics Technology, Chengdu University of Information Technology, Chengdu 610225, China;

    College of Optoelectronics Technology, Chengdu University of Information Technology, Chengdu 610225, China;

    College of Optoelectronics Technology, Chengdu University of Information Technology, Chengdu 610225, China;

    College of Optoelectronics Technology, Chengdu University of Information Technology, Chengdu 610225, China;

    State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    PPM focusing system; structure; magnetic field distribution; open magnetic ring;

    机译:PPM聚焦系统;结构;磁场分布;开环;

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