Mechanical research and development of a monocrystalline silicon neutron beam window for CSNS

	Mechanical research and development of a monocrystalline silicon neutron beam window for CSNS
	Zhou L(周良); Qu HM(屈化民); Zhou, L; Qu, HM
刊名	CHINESE PHYSICS C
	2015
卷号	39 期号:9 页码:96001
关键词	neutron beam window monocrystalline silicon China Spallation Neutron Source the survival rate neutron spectrometers
通讯作者	周良 ; 屈化民
英文摘要	The monocrystalline silicon neutron beam window is one of the key components of a neutron spectrometer. Monocrystalline silicon is brittle and its strength is generally described by a Weibull distribution due to the material inhomogeneity. The window is designed not simply according to the mean strength but also according to the survival rate. The total stress of the window is stress-linearized into a combination of membrane stress and bending stress by finite element analysis. The window is a thin circular plate, so bending deformation is the main cause of failure and tensile deformation is secondary and negligible. Based on the Weibull distribution of bending strength of monocrystalline silicon, the optimized neutron beam window is designed to be 1.5 mm thick. Its survival rate is 0.9994 and its transmittance is 0.98447, which meets both physical and mechanical requirements.
学科主题	Physics
类目[WOS]	Physics, Nuclear ; Physics, Particles & Fields
收录类别	SCI ; CA
WOS记录号	WOS:000361416700011
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228713]
专题	高能物理研究所_东莞分部中国科学院高能物理研究所_中国散裂中子源
推荐引用方式 GB/T 7714	Zhou L,Qu HM,Zhou, L,et al. Mechanical research and development of a monocrystalline silicon neutron beam window for CSNS[J]. CHINESE PHYSICS C,2015,39(9):96001.
APA	周良,屈化民,Zhou, L,&Qu, HM.(2015).Mechanical research and development of a monocrystalline silicon neutron beam window for CSNS.CHINESE PHYSICS C,39(9),96001.
MLA	周良,et al."Mechanical research and development of a monocrystalline silicon neutron beam window for CSNS".CHINESE PHYSICS C 39.9(2015):96001.