中国物理B ›› 2023, Vol. 32 ›› Issue (11): 114101-114101.doi: 10.1088/1674-1056/acc05a

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Structure study of a dielectric laser accelerator with discrete translational symmetry

Yangfan He(何阳帆)1,2,†, Bin Sun(孙斌)1,2,3, Mingjiang Ma(马铭江)4, Wei Li(李伟)1,2, Zhihao Cui(崔志浩)1,2, and Zongqing Zhao(赵宗清)1,‡   

  1. 1 Laser Fusion Research Center, CAEP, Mianyang 621900, China;
    2 The Sciences and Technology on Plasma Physics Laboratory, CAEP, Mianyang 621900, China;
    3 University of Science and Technology of China, Hefei 230026, China;
    4 The Institute of Optics, University of Rochester, Rochester, NY 14627, USA
  • 收稿日期:2022-11-21 修回日期:2023-02-16 接受日期:2023-03-02 出版日期:2023-10-16 发布日期:2023-10-26
  • 通讯作者: Yangfan He, Zongqing Zhao E-mail:heyangfan@mail.ustc.edu.cn;zhaozongqing99@caep.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11975214).

Structure study of a dielectric laser accelerator with discrete translational symmetry

Yangfan He(何阳帆)1,2,†, Bin Sun(孙斌)1,2,3, Mingjiang Ma(马铭江)4, Wei Li(李伟)1,2, Zhihao Cui(崔志浩)1,2, and Zongqing Zhao(赵宗清)1,‡   

  1. 1 Laser Fusion Research Center, CAEP, Mianyang 621900, China;
    2 The Sciences and Technology on Plasma Physics Laboratory, CAEP, Mianyang 621900, China;
    3 University of Science and Technology of China, Hefei 230026, China;
    4 The Institute of Optics, University of Rochester, Rochester, NY 14627, USA
  • Received:2022-11-21 Revised:2023-02-16 Accepted:2023-03-02 Online:2023-10-16 Published:2023-10-26
  • Contact: Yangfan He, Zongqing Zhao E-mail:heyangfan@mail.ustc.edu.cn;zhaozongqing99@caep.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11975214).

摘要: The dielectric laser accelerator (DLA) is a promising technology for achieving high-gradient acceleration in a compact design. Its advantages include ease of cascading and an energy gain per unit distance which can exceed that of conventional accelerators by two orders of magnitude. This paper establishes rules for efficient particle acceleration using dielectric structures based on basic equations, proposes a design principle for DLA structures with clear physical images and verifies the accuracy of the corresponding formula for energy gain. DLA structures with different specifications, materials and geometric shapes are constructed, and the achievable acceleration gradient is calculated. Our results demonstrate that effective acceleration can be achieved when the electric field sensed by particles in the acceleration cavity has zero frequency, which provides a powerful method for designing such devices. Furthermore, we demonstrate that the simplified formula for calculating energy gain presented in this paper can accurately determine the energy gain of particles during the design of acceleration structures using a dielectric accelerator.

关键词: dielectric laser accelerator, acceleration structure, high-gradient accelerator

Abstract: The dielectric laser accelerator (DLA) is a promising technology for achieving high-gradient acceleration in a compact design. Its advantages include ease of cascading and an energy gain per unit distance which can exceed that of conventional accelerators by two orders of magnitude. This paper establishes rules for efficient particle acceleration using dielectric structures based on basic equations, proposes a design principle for DLA structures with clear physical images and verifies the accuracy of the corresponding formula for energy gain. DLA structures with different specifications, materials and geometric shapes are constructed, and the achievable acceleration gradient is calculated. Our results demonstrate that effective acceleration can be achieved when the electric field sensed by particles in the acceleration cavity has zero frequency, which provides a powerful method for designing such devices. Furthermore, we demonstrate that the simplified formula for calculating energy gain presented in this paper can accurately determine the energy gain of particles during the design of acceleration structures using a dielectric accelerator.

Key words: dielectric laser accelerator, acceleration structure, high-gradient accelerator

中图分类号:  (Laser-driven acceleration?)

  • 41.75.Jv
41.20.Jb (Electromagnetic wave propagation; radiowave propagation) 42.25.-p (Wave optics) 41.20.-q (Applied classical electromagnetism)