Design of nano-spintronics beamline at 3-GeV next-generation synchrotron radiation facility, NanoTerasu
Design of nano-spintronics beamline at 3-GeV next-generation synchrotron radiation facility, NanoTerasu
复制标题
3-GeV 下一代同步加速器辐射设施 NanoTerasu 的纳米自旋电子束线设计
DOI：
10.1088/1742-6596/2380/1/012037
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Takahasi Masamitu
中科院分区：
文献类型：
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作者：
Ohtsubo Yoshiyuki;Ueno Tetsuro;Iwasawa Hideaki;Miyawaki Jun;Horiba Koji;Inaba Kento;Agui Akane;Inami Nobuhito;Nakatani Takeshi;Imazono Takashi;Fujii Kentaro;Kimura Hiroaki;Takahasi Masamitu
为日本东北的3-GeV下一代同步辐射装置NanoTerasu设计了一条180-3000 eV软X射线和柔和X射线能量范围内的同步辐射光束线，该光束线具有多功能偏振控制。采用一系列四个APPLE-II型波荡器作为光子源，以实现所需的光束特性和高速偏振开关。光束线光学器件设计用于高效和精确地使用X射线磁性圆/线二色性（XMCD/XMLD）技术，平衡高光子通量和能量分辨率。模拟结果表明，分段波荡器与单色光学系统配合使用，在整个靶能量范围内均获得了足够高的通量和能量分辨率（E/ΔE）。还设计了具有不同的再聚焦光学器件的两个终端站，一个用于具有高通量的边缘光斑尺寸，另一个用于最终聚焦到10 nm。模拟结果为高通量、纳米聚焦自旋电子学测量提供了理论依据。
A synchrotron radiation beamline in the soft-and tender-X ray energy range of 180-3000 eV with versatile polarization control has been designed for NanoTerasu, the 3-GeV next-generation synchrotron radiation facility at Tohoku, Japan. A series of four APPLE-II type undulators is adopted as a photon source to realize the required beam properties with high-speed polarization switching. The beamline optics is designed for a highly efficient and precise use of x-ray magnetic circular/linear dichroism (XMCD/XMLD) technique balancing high photon flux and energy resolution. The simulated performance of the segmented undulator together with the monochromator optics achieved the sufficiently high flux and energy resolution (E/ΔE) in whole target energy range. Two endstations with the different re-focus optics, one for marginal spot size with high flux and the other for ultimate focus down to∼ 10 nm are also designed. The simulated performance of the beamline encourages the future researches of high-throughput and nm-focused spintronic measurements.