The run management system for CSNS

查看全文 作　　者：Yuliang [1,2,3]Zhang;Mingtao [1,2]Kang;Dapeng [1,2,3]Jin;Yongcheng [1,2]He;Peng [1,2]Zhu;Xuan [1,2]Wu;Fengqin [1,2]Guo;Lin [1,2,3]Wang;Wenchun [1,2,3]Gao;Gang [1,2,3]Li

机构地区：[1]Institute of High Energy Physics,Beijing 100049,China;[2]Dongguan Neutron Science Center,Dongguan 523803,China;[3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Radiation Detection Technology and Methods》索引2019年第3卷第3期,共7页

基　　金：the China Spallation Neutron Source project—the National Science Foundation of China(Grant No.11575289);State Key Laboratory of Particle Detection and Electronics(Institute of High Energy Physics,CAS and University of Science and Technology of China)and Key Laboratory of Particle Acceleration Physics andTechnology(Institute of High Energy Physics,CAS). 摘　　要：Purpose In order to increase CSNS beam power from 100 to 500 kW,the linac injection energy needs to be increased from 80 to 300 MeV.The combined layout of superconducting spoke cavities and elliptical cavities will be adopted to accelerate H−beam to 300 MeV.In this paper,a compact single spoke cavity withΦ50-mm beam aperture was proposed,with the RF performance of the spoke cavity optimized to Ep/Eacc<5,Bp/Eacc<9,as well as the good multipacting behavior.Methods CST Microwave Studio was used to optimize the RF performance(Epeak/Eacc,Bpeak/Eacc,R/Q)with cavity geometry parameters.After electromagnetic design was finished,multipacting behavior was studied with CST Particle Studio module,and cavity shape modification was made to get a reasonablevalue.Results The simulation got optimum results of Epeak/Eacc=4.97 and Bpeak/Eacc=8.42 mT/(MV/m),and themax is 1.52 at Eacc=7.74 MV/m.Conclusion A 648 MHzβg=0.4 single spoke cavity with beam apertureΦ50 mm was proposed in the paper.This compact cavity may be a very promising option for CSNS linac upgrading.In addition to the optimization of the RF parameters,the multipacting behavior of the cavity is also studied,and cavity shape is optimized to reducevalue. 关键词：Single spoke cavity RF performance optimization Multipacting simulation

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The run management system for CSNS

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