Author: Wang, N.
Paper Title Page
MOP2WB01 Accelerator Physics Studies for the High Energy Photon Source (HEPS) in Beijing 22
 
  • Y. Jiao, X. Cui, Z. Duan, Y.Y. Guo, D. Ji, J.Y. Li, X.Y. Li, Y.M. Peng, Q. Qin, S.K. Tian, J.Q. Wang, N. Wang, Y. Wei, G. Xu, H.S. Xu, F. Yan, C.H. Yu, Y.L. Zhao
    IHEP, Beijing, People's Republic of China
  
  The High En­ergy Pho­ton Source (HEPS) is the next ring-based light source with an emit­tance of tens of pi­come­ters, and a cir­cum­fer­ence of about 1.3 km to be built in China soon in a few years. After 10 years' evo­lu­tion, the de­sign for the High En­ergy Pho­ton Source is re­cently bas­cially de­ter­mined. We will re­port the lat­tice de­sign and physics stud­ies on HEPS, cov­er­ing is­sues of stor­age lat­tice de­sign and op­ti­miza­tion, booster de­sign, in­jec­tion de­sign, col­lec­tive ef­fects, error study, in­ser­tion de­vice ef­fects, lon­gi­tu­di­nal dy­nam­ics, etc.  
slides icon Slides MOP2WB01 [7.280 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-FLS2018-MOP2WB01  
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TUA2WB04 Ion Instability in the HEPS Storage Ring 34
 
  • S.K. Tian, N. Wang
    IHEP, Beijing, People's Republic of China
  
  The High En­ergy Pho­ton Source (HEPS), a kilo­me­tre scale stor­age ring light source, with a beam en­ergy of 6 GeV and trans­verse emit­tances of a few tens of pm.​rad, is to be built in Bei­jing and now is under de­sign. We in­ves­ti­gate the ion in­sta­bil­ity in the stor­age ring with high beam in­ten­sity and low-emit­tance. We per­forme a weak-strong sim­u­la­tion to show char­ac­ter­is­tic phe­nom­ena of the in­sta­bil­ity in the stor­age ring.  
slides icon Slides TUA2WB04 [3.446 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-FLS2018-TUA2WB04  
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WEP2PT021 The Design and Test of a Stripline Kicker for HEPS 117
 
  • H. Shi, J. Chen, L. Huo, P. Liu, X.L. Shi, G. Wang, L. Wang, N. Wang
    IHEP, Beijing, People's Republic of China
  
  A fast stripline kicker is adopted for High En­ergy Pho­ton Source (HEPS) on-axis in­jec­tion. The op­ti­miza­tion of a pro­to­type 750 mm long kicker has been fin­ished. The 3D sim­u­la­tion re­sults show the final de­sign of wide vane with end cover low­ers the beam loss about 31% than the orig­i­nal de­sign does. We de­velop a feedthrough model with machin­able glass ce­ramic and achieve a VSWR under 1.3 in 0~2 GHz. The as­sem­bly of kicker and com­mer­cial feedthroughs has been tested with Keysight E5071C. The test­ing re­sults of S pa­ra­me­ters and TDR value show a good agree­ment with sim­u­la­tion ones.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-FLS2018-WEP2PT021  
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WEP2PT024 Influences of Harmonic Cavities on the Single-Bunch Instabilities in Electron Storage Rings 128
 
  • H.S. Xu, N. Wang
    IHEP, Beijing, People's Republic of China
  
  Sin­gle-bunch in­sta­bil­i­ties usu­ally de­ter­mine the bunch per­for­mance at high charges as well as the high­est sin­gle- bunch cur­rents in stor­age rings. It has been demon­strated that the pas­sive har­monic cav­i­ties, which have been widely used in elec­tron stor­age rings of the third-gen­er­a­tion syn­chro­tron light sources, can gen­er­ally make the beam more sta­ble. How­ever, the in­flu­ences of the har­monic cav­i­ties on the sin­gle-bunch in­sta­bil­i­ties are still not fully un­der­stood. We hereby pre­sent our study of both lon­gi­tu­di­nal and trans­verse sin­gle-bunch in­sta­bil­i­ties when using dif­fer­ent set­tings of the har­monic cav­i­ties.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-FLS2018-WEP2PT024  
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