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Thermo-mechanical studies for the slit in the emittance measurements
Yang T(杨涛); Xu TG(徐韬光); Wang AX(王安鑫); Qiu RY(邱瑞阳); Huang YL(黄蔚玲); Sun JL(孙继磊); Meng M(孟鸣); Ceng L(曾磊); Xu ZH(徐智虹); Tian JM(田建民); Li P(李鹏); Li F(李芳); Xi ZW(西中威); Nie XJ(聂小军); Yang; Tao; Xu; Taoguang; Wang; Anxin; Qiu; Ruiyang; Huang; Weiling; Sun; Jilei; Meng; Ming; Zeng; Lei; Xu; Zhihong; Tian; Jianmin; Li; Peng; Li; Fang; Xi; Zhongwei; Nie; Xiaojun
2015
发表期刊JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
页码1-10
通讯作者杨涛
文章类型Article
摘要A double-slit type monitor will be used in the emittance measurements at the exit of the first tank of the drift tube linac in the China Spallation Neutron Source where the H− ion energy is 21.67 MeV. The rapid energy deposition in the first slit may generate a rapid temperature rise and high thermal stress, which may damage the slit plate. This article presents detailed thermo-mechanical studies for the slit by Monte Carlo program and finite element analysis. The existence of Bragg peak of the stopping power introduces a thermal spike and stress peak in the slit plate, and both the peak values reach a quasi-steady-state after several beam pulses, moreover, they show different variation trends with changing the beam repetition rate and pulse width. The equilibrium peak temperature and stress are about 1605 K and 78 MPa, respectively, at beam pulse width of 100 μs and repetition rate of 5 Hz when the beam centered at the edge of slit, which does not exceed the corresponding threshold value of graphite, however, high cycling stress may bring about fatigue damage, so the beam parameters should be selected at suitable values according to the demands of actual measurements. © 2015 Atomic Energy Society of Japan. All rights reserved.
关键词Actual measurements Bragg peaks Double slits Emittance measurement Emittances Monte Carlo programs Spallation neutron sources Thermo-mechanical analysis
DOI10.1080/00223131.2015.1070112
收录类别EI ; CA
WOS类目421 Strength of Building Materials ; Mechanical Properties ; 723.5 Computer Applications ; 744.1 Lasers, General ; 921.6 Numerical Methods ; 922.2 Mathematical Statistics ; 932.1 High Energy Physics ; 951 Materials Science
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228894
专题东莞分部
加速器中心
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
Yang T,Xu TG,Wang AX,et al. Thermo-mechanical studies for the slit in the emittance measurements[J]. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY,2015:1-10.
APA 杨涛.,徐韬光.,王安鑫.,邱瑞阳.,黄蔚玲.,...&Xiaojun.(2015).Thermo-mechanical studies for the slit in the emittance measurements.JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY,1-10.
MLA 杨涛,et al."Thermo-mechanical studies for the slit in the emittance measurements".JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY (2015):1-10.
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