Design and analysis of stress-free clamping of mirrors used in free-electron laser beamlines

doi:10.37188/CO.2019-0131

CIOMP OpenIR

	Design and analysis of stress-free clamping of mirrors used in free-electron laser beamlines
	C.-h. Zhao,Q.-p. Lu,Y. Song,X.-p. Gong,W. Y and X. B.-H
	2020
发表期刊	Chinese Optics
ISSN	20951531
卷号	13 期号:4 页码:787-794
摘要	The reflector is an important optical element in free-electron laser beamlines. Deformation error caused by gravity can seriously affect the image quality of a beamline. To reduce deformation error, a gravity compensation scheme based on the Bessel point theory is proposed and a stress-free clamping device is designed. Taking a 440 mm 50 mm 50 mm mirror as an example, the analysis results indicate that the deformation error in the bottom surface of a mirror clamped with the traditional support method is 1.647 rad. Adopting the newly designed device proposed in this paper, the results of a finite element analysis showed that the deformation error reduced to 0.085 7 rad, which is better than the engineering index of 0.1 rad. To prevent the mirror from moving when switching modes, a small clamping force of no more than 2 N can be added to the mirror, at which point the surface error of the mirror becomes 0.093 9 rad. Additionally, a dynamic analysis of the device is also carried out, which indicates that the device mutes the low natural frequency, which means that resonance will not occur during operation. Therefore, this scheme satisfies our requirements for the beamline. Copyright 2020 Chinese Optics. All rights reserved.
DOI	10.37188/CO.2019-0131
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收录类别	EI
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64400
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	C.-h. Zhao,Q.-p. Lu,Y. Song,X.-p. Gong,W. Y and X. B.-H. Design and analysis of stress-free clamping of mirrors used in free-electron laser beamlines[J]. Chinese Optics,2020,13(4):787-794.
APA	C.-h. Zhao,Q.-p. Lu,Y. Song,X.-p. Gong,W. Y and X. B.-H.(2020).Design and analysis of stress-free clamping of mirrors used in free-electron laser beamlines.Chinese Optics,13(4),787-794.
MLA	C.-h. Zhao,Q.-p. Lu,Y. Song,X.-p. Gong,W. Y and X. B.-H."Design and analysis of stress-free clamping of mirrors used in free-electron laser beamlines".Chinese Optics 13.4(2020):787-794.

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