Design and experiment results of the LEBT pre-chopper for CSNS

	Design and experiment results of the LEBT pre-chopper for CSNS
	Liu HC(刘华昌); 欧阳华甫; Peng J(彭军); 黄涛(加); Gong KY(巩克云); Xu TG(徐韬光); Fu SN(傅世年); Liu, HC; Ouyang, HF; Peng, J
刊名	NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
	2011
卷号	654 期号:1 页码:2-7
关键词	High intensity proton accelerator Pre-chopper Rise/fall time
通讯作者	[Liu, Huachang ; Ouyang, Huafu ; Peng, Jun ; Huang, Tao ; Gong, Keyun ; Xu, Taoguang ; Fu, Shinian] Inst High Energy Phys, Beijing 100049, Peoples R China
英文摘要	In a high intensity proton accelerator complex comprising a linac and a ring, a beam chopper is often necessary in order to reduce the beam loss during injection from the linac to the ring. The China Spallation Neutron Source (CSNS) front end incorporates a pre-chopper in the Low Energy Beam Transport line (LEBT) that will remove a 530 ns section of beam at approximately 1 MHz rate. Physical design of the pre-chopper is presented in this paper. The distinguished feature of this electrostatic beam chopper is the novel design of deflecting structure, and the theoretic fast beam rise/fall time, which is an essential requirement for CSNS accelerator to avoid radioactivity induced by the lost particles due to insufficient chopping during the transient time; Taking advantage of the existing LEBT of the Accelerator Driven Subcritical System (ADS), the beam study of a similar chopper system was successfully performed and the achieved rise/fall time was less than 20 ns, which is the fastest one compared to other similar pre-choppers. This type of pre-chopper will be used in the CSNS LEBT, which is under construction. (C) 2011 Elsevier B.V. All rights reserved.
学科主题	Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy
类目[WOS]	Instruments & Instrumentation ; Nuclear Science & Technology ; Physics, Particles & Fields ; Spectroscopy
研究领域[WOS]	Instruments & Instrumentation ; Nuclear Science & Technology ; Physics ; Spectroscopy
原文出处	SCI
语种	英语
WOS记录号	WOS:000295765100001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/236786]
专题	高能物理研究所_加速器中心高能物理研究所_理论物理室中国科学院高能物理研究所_中国散裂中子源
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Liu HC,欧阳华甫,Peng J,et al. Design and experiment results of the LEBT pre-chopper for CSNS[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2011,654(1):2-7.
APA	刘华昌.,欧阳华甫.,彭军.,黄涛.,巩克云.,...&Fu, SN.(2011).Design and experiment results of the LEBT pre-chopper for CSNS.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,654(1),2-7.
MLA	刘华昌,et al."Design and experiment results of the LEBT pre-chopper for CSNS".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 654.1(2011):2-7.