System design and measurements of flux concentrator and its solid-state modulator for CEPC positron source

作     者：Jing-Dong Liu Xiao-Ping Li Cai Meng Yun-Long Chi Guo-Xi Pei Da-Yong He Jing-Yi Li Xian-Jing Sun Jing-Ru Zhang Lei Shang Jian-Bin Zhu Jing-Dong Liu;Xiao-Ping Li;Cai Meng;Yun-Long Chi;Guo-Xi Pei;Da-Yong He;Jing-Yi Li;Xian-Jing Sun;Jing-Ru Zhang;Lei Shang;Jian-Bin Zhu

作者机构：National Synchrotron Radiation LaboratoryUniversity of Science and Technology of ChinaHefei 230029China Key Laboratory of Particle Acceleration Physics and TechnologyInstitute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2021年第32卷第7期

页      面：108-117页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

基　　金：This work was supported by the National Key Programme for S&T Research and Development(No.2016YFA0400400) the Youth Innovation Promotion Association CAS(2019016) 

主　　题：CEPC positron source Flux concentrator Solid-state modulator High current Peak magnetic field 

摘      要：Positron sources are one of the most important components of the injector of a circular electron positron collector(CEPC).The CEPC is designed as an e^(+)e^(−)collider for a Higgs *** accelerator system is composed of 100-km-long storage rings and an *** design goal of the positron source is to obtain positron beams with a bunch charge of 3 *** flux concentrator(FC)is one of the cores of the positron *** paper reports the design,development,and measurements of an FC prototype *** prototype includes an FC and an all-solid-state high-current pulse *** tests show that the peak current on the FC can reach 15.5 kA,and the peak magnetic field can reach 6.2 *** test results are consistent with the theoretical *** FC system fulfills the requirements of the CEPC positron source as well as provides a reference for the development of similar devices both domestically and abroad.