Using a pre-kicker to ensure safe extractions from the HEPS storage ring

作     者：Zhe Duan Jin-Hui Chen Hua Shi Guang-Yi Tang Lei Wang Yu-Wen Wu Zhe Duan;Jin-Hui Chen;Hua Shi;Guang-Yi Tang;Lei Wang;Yu-Wen Wu

作者机构：Key Laboratory of Particle Acceleration Physics and TechnologyInstitute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of SciencesBeijing 100049China Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Dongguan Neutron Science CenterDongguan 523800China 

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

年 卷 期：2021年第32卷第12期

页      面：26-36页

核心收录：

学科分类：08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 

基　　金：the National Natural Science Foundation of China(Nos.11605212,11475200,and 11675194) Youth Innovation Promotion Association CAS(No.2021012) High Energy Photon Source(HEPS),a major national science and technology infrastructure in China 

主　　题：Pre-kicker The high energy photon source Intense electron beam Diffraction-limited storage ring Extraction Lambertson magnet 

摘      要：The High Energy Photon Source(HEPS)is a 6 GeV diffraction-limited storage ring light source under *** swap-out injection is adopted with the depleted bunch recycled via high-energy accumulation in the *** extremely high beam energy density of the bunches with an ultra-low emittance(about 30 pm horizontally and 3 pm vertically)and high bunch charges(from 1.33 to 14.4 nC)extracted from the storage ring could cause hazardous damage to the extraction Lambertson magnet in case of extraction kicker *** this end,we proposed the use of a pre-kicker to spoil the bunches prior to extraction,significantly reducing the maximum beam energy density down to within a safe region while still maintaining highly efficient *** main parameters of the pre-kicker are simulated and discussed.