High Power Laser and Particle Beams, Volume. 35, Issue 5, 054002(2023)

Design of injection and extraction delay-line kicker magnet for circular electron-positron collider

Guanjian Wu1,2, Lei Wang1,2, Guanwen Wang2, Xiaolei Shi2, Xinzhe Zhai1,2, and Jinhui Chen1,2、*
Author Affiliations
  • 1School of Nuclear Science and Technology , University of Chinese Academy of Sciences , Beijing 100049, China
  • 2Accelerator Division , Institute of High Energy Physics , Chinese Academy of Sciences , Beijing 100049, China
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    Figures & Tables(18)
    Trapezoidal wave kicker system
    Delay-line kicker base unit
    Simplified equivalent electric circuit of a delay-line kicker
    Ceramic vacuum chamber
    Cross section of ceramic vacuum chamber
    Cross section of designed kicker
    3D model of designed kicker
    Overlapping area of capacitor plates (air as medium)
    Sandwich capacitor structure
    Overlapping area of capacitor plates (ceramic as medium)
    Opera 2D model of delay-line kicker
    Magnetic field distribution along x-axis
    Magnetic field distribution of central region
    Electric circuit model of delay-line kicker system
    Time distribution of magnetic field pulse
    • Table 1. Physical requirements of CEPC off-axis injection kicker system

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      Table 1. Physical requirements of CEPC off-axis injection kicker system

      repetition rate/Hz pulse width/ns flat top/ns rise (fall) time/ns kick angle/mrad integral field strength/(T·m) beam pipe aperture
      1000440~2420 (adjustable) 0~1980 (adjustable) <2200.10.0475 mm×56 mm
    • Table 2. Performance parameters of Ni-Zn ferrite

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      Table 2. Performance parameters of Ni-Zn ferrite

      initial permeability saturation flux density/mT residual flux density/mT coercive force/(A· $ {\mathrm{m}}^{-1} $) density/ (g· $ {\mathrm{c}\mathrm{m}}^{-3} $) Curie temperature/℃
      21003301309.55.27130
    • Table 3. Typical MOSFET and IGBT switching parameters

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      Table 3. Typical MOSFET and IGBT switching parameters

      typeVbr/V Td(on)/ns Tr/ns Td(off) /ns Tf/ns
      MOSFET170065204818
      IGBT1200106053030
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    Guanjian Wu, Lei Wang, Guanwen Wang, Xiaolei Shi, Xinzhe Zhai, Jinhui Chen. Design of injection and extraction delay-line kicker magnet for circular electron-positron collider[J]. High Power Laser and Particle Beams, 2023, 35(5): 054002

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    Paper Information

    Category: Particle Beams and Accelerator Technology

    Received: Oct. 29, 2022

    Accepted: Feb. 14, 2023

    Published Online: May. 6, 2023

    The Author Email: Chen Jinhui (chenjh@ihep.ac.cn)

    DOI:10.11884/HPLPB202335.220364

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