Author: Tian, S.K.
Paper Title Page
MOPIK079 The Off-Axis Injection Lattice Design of HEPS Storage Ring 716
 
  • Y.M. Peng, D. Ji, Y. Jiao, S.K. Tian, J.Q. Wang, G. Xu
    IHEP, Beijing, People's Republic of China
  
  The dynamic aperture size determines the injection scheme to a large extent. The aim of storage ring design of HEPS is to achieve ultralow emittances on both transverse planes. This will bring very strong lattice nonlinearities. The present nominal design is a hybrid 7BA design with effective dynamic aperture of about 3 mm both in horizontal and vertical plane. Due to the restriction of dynamic aperture of this lattice, on-axis injection is the only choice . But, on-axis injection will bring a very big challenge for injector or injection kicker, if it is feasible to obtain a large dynamic aperture, off-axis injection is a favoured choice. In this paper, we will show the preliminary study of the lattice design with a sufficient dynamic aperture for pulsed multipole injection..  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPIK079  
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MOPIK081 Study of HEPS Performance with Error Model and Simulated Correction 721
 
  • D. Ji, Z. Duan, S.K. Tian, Y. Wei
    IHEP, Beijing, People's Republic of China
  
  As an important component of physics study on High Energy Photon Source (HEPS), error modelling and simu-lated correction will provide the guideline to restrict the manufacture redundancy of the hardware and estimate the real machine performance. In this paper, we present some work on error effect evaluation and simulated commis-sioning based on a recent lattice design.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPIK081  
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TUPAB065 The Progress of HEPS Booster Design 1472
 
  • Y.M. Peng, Z. Duan, Y.Y. Guo, D. Ji, Y. Jiao, S.K. Tian, G. Xu
    IHEP, Beijing, People's Republic of China
  
  The High Energy Photon Source (HEPS), a kilometre-scale, ultralow-emittance storage ring light source, is to be built in Beijing, China. For HEPS, a full energy booster synchrotron operating at a frequency of 2Hz is considered. In this paper, we will report the progress of the lattice design and physics studies on HEPS booster, containing the injection consideration, ramping process, error studies, and so on.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPAB065  
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TUPAB067 Studies of Beam Lifetime at HEPS 1478
 
  • S.K. Tian, Y. Jiao, G. Xu
    IHEP, Beijing, People's Republic of China
  
  The electron storage ring's beam lifetime is determined by scattering of the electrons at the nucleus and the shell of the atoms of the residual gas (gas lifetime) and the scattering of electrons within a bunch (Touschek lifetime).Beam lifetime studies have been performed at the 6 GeV electron storage ring HEPS.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPAB067  
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WEPAB052 Progress of the Lattice Design and Physics Studies on the High Energy Photon Source 2697
 
  • 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
  
  Funding: Work supported by NSFC (11475202, 11405187, 11205171)
The High Energy Photon Source (HEPS) is a 6-GeV, kilometer-scale, ultralow-emittance storage ring light source to be built in Beijing, China. In this paper we will discuss the progress of the lattice design and related physics studies on HEPS, covering issues of storage ring design, booster design, injection design, collective effects, error study, insertion device effects, longitudinal dynamics, etc. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPAB052  
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WEPIK078 Development of the Impedance Model in HEPS 3110
 
  • N. Wang, Z. Duan, X.Y. Li, H. Shi, S.K. Tian, G. Xu
    IHEP, Beijing, People's Republic of China
  
  The High Energy Photon Source (HEPS) is a new designed photon source at beam energy of 6 GeV. Due to the small beam pipe aperture and a large number of insertion devices in the machine, the impedance can drive collective instabilities and limit the machine performance. Therefore, a thorough estimation of the coupling impedance is necessary in controlling the total impedance of the whole machine. A primary impedance model is obtained for the storage ring.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPIK078  
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THPAB030 Studies on Collective Instabilities in HEPS 3763
 
  • N. Wang, Z. Duan, C. Li, S.K. Tian, H.S. Xu
    IHEP, Beijing, People's Republic of China
  
  The High Energy Photon Source (HEPS) is a new designed photon source at beam energy of 6 GeV. Due to the small beam size and increased coupling impedance with the restricted beam pipe aperture, the collective effects may bring new challenges to the physical design of the machine. The collective instabilities are estimated for different operation mode. The critical instability issues are also identified for each mode.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPAB030  
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