Mechanical design and performance evaluation for plane grating monochromator in a soft X-ray microscopy beamline at SSRF

	Mechanical design and performance evaluation for plane grating monochromator in a soft X-ray microscopy beamline at SSRF
	Gong, X. P. and Q. P. Lu
	2015
发表期刊	Journal of X-Ray Science and Technology
卷号	23 期号:4 页码:409-421
摘要	A new monochromator is designed to develop a high performance soft X-ray microscopy beamline at Shanghai Synchrotron Radiation Facility (SSRF). But owing to its high resolving power and high accurate spectrum output, there exist many technical difficulties. In the paper presented, as two primary design targets for the monochromator, theoretical energy resolution and photon flux of the beamline are calculated. For wavelength scanning mechanism, primary factors affecting the rotary angle errors are presented, and the measuring results are 0.15 '' and 0.17 '' for plane mirror and plane grating, which means that it is possible to provide sufficient scanning precision to specific wavelength. For plane grating switching mechanism, the repeatabilities of roll, yaw and pitch angles are 0.08 '', 0.12 '' and 0.05 '', which can guarantee the high accurate switch of the plane grating effectively. After debugging, the repeatability of light spot drift reaches to 0.7 '', which further improves the performance of the monochromator. The commissioning results show that the energy resolving power is higher than 10000 at Ar L-edge, the photon flux is higher than 1 x 10(8) photons/sec/200 mA, and the spatial resolution is better than 30 nm, demonstrating that the monochromator performs very well and reaches theoretical predictions.
收录类别	SCI ; EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/55253
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Gong, X. P. and Q. P. Lu. Mechanical design and performance evaluation for plane grating monochromator in a soft X-ray microscopy beamline at SSRF[J]. Journal of X-Ray Science and Technology,2015,23(4):409-421.
APA	Gong, X. P. and Q. P. Lu.(2015).Mechanical design and performance evaluation for plane grating monochromator in a soft X-ray microscopy beamline at SSRF.Journal of X-Ray Science and Technology,23(4),409-421.
MLA	Gong, X. P. and Q. P. Lu."Mechanical design and performance evaluation for plane grating monochromator in a soft X-ray microscopy beamline at SSRF".Journal of X-Ray Science and Technology 23.4(2015):409-421.

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