A high precision flat crystal spectrometer compatible for ultra-high vacuum light source

doi:10.1063/1.5010995

	A high precision flat crystal spectrometer compatible for ultra-high vacuum light source
	Yang, Y.1,2; Xiao, J.1,2; Lu, D.1,2; Shen, Y.1,2; Yao, K.1,2; Chen, C.1,2; Hutton, R.1,2; Zou, Y.1,2
刊名	REVIEW OF SCIENTIFIC INSTRUMENTS
	2017-11-01
卷号	88 页码:6
ISSN号	0034-6748
DOI	10.1063/1.5010995
英文摘要	We report on a flat crystal spectrometer (FCS) featuring a differently pumped rotary feedthrough and double detectors connected to a crystal chamber by extendable bellows built at the Shanghai EBIT Laboratory. It was designed to overcome defects such as oil contamination, little distance from the detector to the crystal and others of an early FCS equipped at the same laboratory, but still keeps a large detectable angle range of detectors and brings new features and functions such as the Bond method measurement and double-crystal measurement which are based on the two-detector and large bellow design. This new FCS could cover an energy range of measurable photons from 570 eV to 10 keV and reach a vacuum better than 6 x 10(-10) Torr and thus is compatible for coupling directly to ultra-high vacuum light sources. Off-line tests of the FCS were undertaken where K alpha x-rays from solid titanium were measured and analyzed. Measurements of transitions in He-like argon ions were performed when the spectrometer was directly connected to Shanghai EBIT, and the width of the x-ray source was monitored simultaneously using an x-ray slit imaging system. An observed spectral line broadening was 0.869 eV corresponding to a resolving power of 3600, including Doppler broadening of the x-ray source. Taking account of the measured source width, we made simulations using the SHADOW3 code and got a nominal resolving power of 6500 for the spectrometer. This high nominal resolving power is due to a longer distance from the crystal to the detector, comparing with that in the early FCS. Published by AIP Publishing.
资助项目	National Magnetic Confinement Fusion Program[2015GB117000] ; Shanghai Leading Academic Discipline Project[B107]
WOS关键词	X-RAY SPECTROMETER ; BEAM ION-TRAP ; EMISSION LINES ; CHARGED IONS
WOS研究方向	Instruments & Instrumentation ; Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000416780600009
资助机构	National Magnetic Confinement Fusion Program ; Shanghai Leading Academic Discipline Project
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/46945]
专题	中国科学院近代物理研究所
通讯作者	Xiao, J.
作者单位	1.Fudan Univ, Inst Modern Phys, Shanghai EBIT Lab, Shanghai 200433, Peoples R China 2.Fudan Univ, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai 200433, Peoples R China
推荐引用方式 GB/T 7714	Yang, Y.,Xiao, J.,Lu, D.,et al. A high precision flat crystal spectrometer compatible for ultra-high vacuum light source[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2017,88:6.
APA	Yang, Y..,Xiao, J..,Lu, D..,Shen, Y..,Yao, K..,...&Zou, Y..(2017).A high precision flat crystal spectrometer compatible for ultra-high vacuum light source.REVIEW OF SCIENTIFIC INSTRUMENTS,88,6.
MLA	Yang, Y.,et al."A high precision flat crystal spectrometer compatible for ultra-high vacuum light source".REVIEW OF SCIENTIFIC INSTRUMENTS 88(2017):6.