Precise centering method for triplet of magnetic quadrupole lenses using single rigid frame

doi:10.1016/j.nimb.2017.01.056

	Precise centering method for triplet of magnetic quadrupole lenses using single rigid frame
	Lapin, O. S.1; Kolinko, S. V.1; Rebrov, V. A.1; Salivon, V. F.1; Ponomarov, Artem 1,2; Ponomarev, A. G.1
	2017-08
关键词	Nuclear microprobe Magnetic quadrupole lens Separated probe forming system Quadrupole lens positioning
卷号	404
DOI	10.1016/j.nimb.2017.01.056
页码	41-44
英文摘要	Separated probe-forming systems can be applied to enhance the resolution of a scanning nuclear microprobe with a comparatively large working distance to accommodate the detectors at backward angles. In such systems, magnetic quadrupole lenses are placed at the considerable distance and hence require their precise alignment with the beam axes. Violation of this requirement results in a considerable increasing of a spot size on the target for a constant beam current. Positioning of magnetic quadrupole lenses in a doublet can be implemented in a single-unit design, where a yoke and poles of two lenses are made from one piece of soft iron by precise electrical discharge machining. In a case of triplet, lens manufacturing as a single-unit has technological difficulties. A lens triplet configuration presented in this work comprises placement of three single magnetic quadrupole lenses in a single rigid frame. An approach to lens alignment by the magnetic field reconstruction method was developed and successfully realized. (C) 2017 Elsevier B.V. All rights reserved.
会议录	NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
会议录出版者	ELSEVIER SCIENCE BV
会议录出版地	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
语种	英语
资助项目	research program "Development of Advanced Directions of Fundamental Research in Nuclear Radiation Physics and Power Engineering" of The Department of Nuclear Physics and Power Engineering, NAS of Ukraine[0111U0610]
WOS研究方向	Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
WOS记录号	WOS:000404709900008
内容类型	会议论文
源URL	[http://119.78.100.186/handle/113462/57325]
专题	中国科学院近代物理研究所
通讯作者	Ponomarev, A. G.
作者单位	1.Natl Acad Sci Ukraine, Inst Appl Phys, Petropavlovskaja Str 58, UA-40000 Sumy, Ukraine 2.Chinese Acad Sci, Inst Modern Phys, 509 Nanchang Rd, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Lapin, O. S.,Kolinko, S. V.,Rebrov, V. A.,et al. Precise centering method for triplet of magnetic quadrupole lenses using single rigid frame[C]. 见:.