• High Power Laser and Particle Beams
  • Vol. 35, Issue 12, 124006 (2023)
Peining Wang, Penghui Yang, Gangwen Liu*, Zhenghe Bai, and Weimin Li
Author Affiliations
  • National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
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    DOI: 10.11884/HPLPB202335.230070 Cite this Article
    Peining Wang, Penghui Yang, Gangwen Liu, Zhenghe Bai, Weimin Li. Design and simulation of beam injection scheme for diffraction limited storage ring[J]. High Power Laser and Particle Beams, 2023, 35(12): 124006 Copy Citation Text show less
    Magnet layout and linear optical parameters of one period HALF lattice
    Fig. 1. Magnet layout and linear optical parameters of one period HALF lattice
    Dynamic aperture of the HALF storage ring
    Fig. 2. Dynamic aperture of the HALF storage ring
    Schematic layout of injection devices for the bump injection scheme with anti-septum (K2)
    Fig. 3. Schematic layout of injection devices for the bump injection scheme with anti-septum (K2)
    Element layout of anti-septum injection scheme
    Fig. 4. Element layout of anti-septum injection scheme
    Position of the first six turns of injection beam
    Fig. 5. Position of the first six turns of injection beam
    Injection efficiency of anti-septum injection scheme
    Fig. 6. Injection efficiency of anti-septum injection scheme
    Influence of anti-septum injection on the stored beam
    Fig. 7. Influence of anti-septum injection on the stored beam
    Schematic layout of injection devices for the multipole kicker injection scheme
    Fig. 8. Schematic layout of injection devices for the multipole kicker injection scheme
    Field distribution of nonlinear kicker
    Fig. 9. Field distribution of nonlinear kicker
    First turn trajectory of the injection particle and specific parameters of the injection scheme
    Fig. 10. First turn trajectory of the injection particle and specific parameters of the injection scheme
    Accumulation process after pulsed multipole injection
    Fig. 11. Accumulation process after pulsed multipole injection
    Injection efficiency of pulsed multipole injection with error
    Fig. 12. Injection efficiency of pulsed multipole injection with error
    Influence of pulsed multipole injection on the stored beam
    Fig. 13. Influence of pulsed multipole injection on the stored beam
    Schematic layout of injection devices for the longitudinal injection scheme
    Fig. 14. Schematic layout of injection devices for the longitudinal injection scheme
    Upper and lower boundaries of longitudinal phase space in longitudinal injection
    Fig. 15. Upper and lower boundaries of longitudinal phase space in longitudinal injection
    δ0 and δs change with high frequency cavity voltage
    Fig. 16. δ0 and δs change with high frequency cavity voltage
    Accumulation process of injection beam in longitudinal injection
    Fig. 17. Accumulation process of injection beam in longitudinal injection
    circumference/ m beam energy/ GeV focusing type natural emittance/ (pm·rad) transverse tunes (H/V) natural chromaticities (H/V) momentum compaction factor energy loss per turn/keV harmonic number RF frequency/ MHz RF voltage/ kV damping time (H/V/L)/ms natural energy spread
    479.862.220×6BA86.348.15/17.15−77/−579.0×10−5186.7800500100027.2/37.7/23.40.62×10−3
    Table 1. Main parameters of the HALF storage ring
    horizontal position of the injection beam at septum/mm incidence angle of the injection beam at septum/mrad position of septum position of nonlinear kicker length of nonlinear kicker/cm kick angle of nonlinear kicker/mrad
    12−3.1midpoint of long straight section downstream of long straight section 403
    Table 2. Main parameters of pulsed multipole injection scheme
    injection beam time offset/nsinjection beam energy offset/%RF frequency/MHzRF voltage/kVharmonic numberbunch spacing/ns
    −54.3410035016010
    Table 3. Main parameters of longitudinal injection scheme
    Peining Wang, Penghui Yang, Gangwen Liu, Zhenghe Bai, Weimin Li. Design and simulation of beam injection scheme for diffraction limited storage ring[J]. High Power Laser and Particle Beams, 2023, 35(12): 124006
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