Purpose The High Energy Photon Source(HEPS)is a 6 GeV diffraction-limited storage ring light source being built in China.HEPS booster ramps the beam energy from 500 MeV to 6 GeV with a repetition rate of 1 Hz.For the ...Purpose The High Energy Photon Source(HEPS)is a 6 GeV diffraction-limited storage ring light source being built in China.HEPS booster ramps the beam energy from 500 MeV to 6 GeV with a repetition rate of 1 Hz.For the beam dynamics simulations,the consideration of the fringe field effects is not ignorable.Method To this end,several methods based on one-dimensional and three-dimensional magnetic fields are used to model the dipoles and quadrupoles of booster.Results and conclusion In this paper,we evaluate the impacts of magnetic fringe field effects of dipoles and quadrupoles on the optics of the HEPS booster.展开更多
Purpose The physics design of the High Energy Photon Source(HEPS)was finished after many times of iteration.Hereby,the typical equilibrium electron beam parameters corresponding to the proposed two baseline operation ...Purpose The physics design of the High Energy Photon Source(HEPS)was finished after many times of iteration.Hereby,the typical equilibrium electron beam parameters corresponding to the proposed two baseline operation modes in the baseline design of HEPS are presented.Methods To compute the equilibrium parameters of the electron beam,the lattice parameters,RF parameters,and the parameters of the insertion devices(IDs)were determined first.Furthermore,it is more precise to use the full-current electron beam parameters in the estimations of the performance of the synchrotron light.Therefore,not only the single-particle dynamics but also the current-dependent collective effects need to be considered in the computations of the full-current,equilibrium parameters of the electron beam.Both analytic computations and multi-particle tracking simulations were carried out.Results The full-current,equilibrium parameters of the electron beams in the HEPS storage ring are presented in this paper.Moreover,the main beam parameters in the injector(the booster and the LINAC),corresponding to the two baseline operation modes of the storage ring,are also presented.Conclusion The typical electron beam parameters corresponding to the two baseline operation modes are given in detail in this paper.展开更多
基金The authors would like to thank their colleagues in the HEPS accelerator physics system for the fruitful suggestions and comments.This work is supported by High Energy Photon Source(HEPS)a major national science and technology infrastructure,National Natural Science Foundation of China(No.11922512,12275284)+1 种基金Youth Innovation Promotion Association of Chinese Academy of Sciences(No.Y201904)Key Laboratory of Particle Acceleration Physics and Technology,CAS(No.JSQ2021ZZ01).
文摘Purpose The High Energy Photon Source(HEPS)is a 6 GeV diffraction-limited storage ring light source being built in China.HEPS booster ramps the beam energy from 500 MeV to 6 GeV with a repetition rate of 1 Hz.For the beam dynamics simulations,the consideration of the fringe field effects is not ignorable.Method To this end,several methods based on one-dimensional and three-dimensional magnetic fields are used to model the dipoles and quadrupoles of booster.Results and conclusion In this paper,we evaluate the impacts of magnetic fringe field effects of dipoles and quadrupoles on the optics of the HEPS booster.
基金supported by the High Energy Photon Source(HEPS),a major national science and technology infrastructurethe National Natural Science Foundation of China(No.11922512).
文摘Purpose The physics design of the High Energy Photon Source(HEPS)was finished after many times of iteration.Hereby,the typical equilibrium electron beam parameters corresponding to the proposed two baseline operation modes in the baseline design of HEPS are presented.Methods To compute the equilibrium parameters of the electron beam,the lattice parameters,RF parameters,and the parameters of the insertion devices(IDs)were determined first.Furthermore,it is more precise to use the full-current electron beam parameters in the estimations of the performance of the synchrotron light.Therefore,not only the single-particle dynamics but also the current-dependent collective effects need to be considered in the computations of the full-current,equilibrium parameters of the electron beam.Both analytic computations and multi-particle tracking simulations were carried out.Results The full-current,equilibrium parameters of the electron beams in the HEPS storage ring are presented in this paper.Moreover,the main beam parameters in the injector(the booster and the LINAC),corresponding to the two baseline operation modes of the storage ring,are also presented.Conclusion The typical electron beam parameters corresponding to the two baseline operation modes are given in detail in this paper.
