磁性材料在同步辐射及自由电子激光中的应用

doi:10.15541/jim20160177

摘要/Abstract

摘要：

同步辐射与自由电子激光都是相对论高能电子束产生的电磁辐射光, 在国民经济、科学技术研究和国防军事等领域中有着广泛应用。各种永磁插入件是同步辐射光源及自由电子激光装置的关键设备之一, 磁性材料特别是永磁体磁特性及质量对插入件的磁场品质、磁场峰值、磁场稳定性和运行方案等都有着重要影响。本文综述了同步辐射及自由电子激光特征, 介绍了磁性材料在同步辐射及自由电子激光插入件中的应用情况。

关键词: 同步辐射, 自由电子激光, 永磁插入件, 磁性材料

Abstract:

The synchrotron radiation and free electron laser are electromagnetic radiation light sources which are both generated by the relativistic electron beam. Both sources have been widely used in the national economic, scientific and technical researches, national defense and military fields. The insert device made of permanent magnet is one of the key equipments of the synchrotron radiation light source and the free electron laser facility. Magnetic properties and quality of magnetic materials especially have significant influence on magnetic field quality, magnetic field peak value, magnetic field stability and operation scheme of insert devices. This paper reviewed characteristics of synchrotron radiation and free electron laser, and their conceptual application.

Key words: synchrotron radiation, free electron laser, permanent magnet insert device, magnetic materials.

中图分类号:

何永周, 周巧根. 磁性材料在同步辐射及自由电子激光中的应用[J]. 无机材料学报, 2016, 31(10): 1031-1038.

HE Yong-Zhou, ZHOU Qiao-Gen. Application of Magnetic Materials in Synchrotron Radiation and Free Electron Laser[J]. Journal of Inorganic Materials, 2016, 31(10): 1031-1038.

图/表 12

图1 同步辐射光[4]

Fig. 1 Synchrotron radiation light[4]

图2 中国大陆SSRF布局[11]

Fig. 2 Layout of SSRF for China[11]

图3 我国SXFEL自由电子激光装置布局[17]

Fig. 3 Layout of SXFEL free electron laser facility for China[17]

图4 三种同步辐射光[15]

Fig. 4 Three kinds of synchrotron radiation light[15] (a) Bending iron; (b) Wiggler; (c) Undulator

图5 三种同步辐射光谱[15]

Fig. 5 Spectra of synchrotron radiation[15]

图6 理想Halbach磁路[1]

Fig. 6 Ideal Halbach magnetic circuit[1]

图7 标准Halbach磁结构磁力线分布[1]

Fig. 7 Flux distribution of standard Halbach structure[1]

图8 同步辐射光模式[17]

Fig. 8 Synchrotron radiation light mode[17] (a) Horizontal; (b) Vertical; (c) Line inclined; (d) Elliptical polarization

图9 典型插入件[17]

Fig. 9 Typical insert device[17] (a) In-vacuum undulator; (b) Elliptically polarized undulator

图10 国产永磁体磁性能[19]

Fig. 10 Magnetic properties of the permanent magnet for China[19]

图11 波荡器内大梁永磁体阵列[17]

Fig. 11 Permanent magnets array of undulator beam[17]

图12 典型永磁体镀层

Fig. 12 Typical coating of permanent magnet (a) NiCuNi; (b)TiN

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