Topology optimization of on-chip integrated laser-driven particle accelerator

Yang-Fan He; Bin Sun; Ming-Jiang Ma; Wei Li; Qiang-You He; Zhi-Hao Cui; Shao-Yi Wang; Zong-Qing Zhao

doi:10.1007/s41365-022-01101-2

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Topology optimization of on-chip integrated laser-driven particle accelerator

ACCELERATOR, RAY TECHNOLOGY AND APPLICATIONS | Updated：2022-10-24

- Topology optimization of on-chip integrated laser-driven particle accelerator
- Nuclear Science and Techniques Vol. 33, Issue 9, Article number: 120(2022)
- Affiliations：
  
  1.Laser Fusion Research Center, CAEP, P. O. Box 919 986, Mianyang 621900, China
  2.The Sciences and Technology on Plasma Physics Laboratory, CAEP, Mianyang 621900, China
  3.Department of Plasma Physics and Fusion Engineering, CAS Key Laboratory of Geospace Environment, University of Science and Technology of China, Hefei 230026, China
  4.The Institute of Optics, University of Rochester, Rochester, NY 14627, USA
- Author bio：
  
  y-f-he@foxmail.com
  zhaozongqing99@caep.ac.cn
- Funds：
- DOI：10.1007/s41365-022-01101-2
  CLC：
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Yang-Fan He, Bin Sun, Ming-Jiang Ma, et al. Topology optimization of on-chip integrated laser-driven particle accelerator. [J]. Nuclear Science and Techniques 33(9):120(2022)
DOI：

Yang-Fan He, Bin Sun, Ming-Jiang Ma, et al. Topology optimization of on-chip integrated laser-driven particle accelerator. [J]. Nuclear Science and Techniques 33(9):120(2022) DOI： 10.1007/s41365-022-01101-2.

摘要

Abstract

Particle accelerators are indispensable tools in both science and industry. However, the size and cost of conventional RF accelerators limits the utility and scope of this technology. Recent research has shown that a dielectric laser accelerator (DLA) made of dielectric structures and driven at optical frequencies can generate particle beams with energies ranging from MeV to GeV at the tabletop level. To design DLA structures with a high acceleration gradient, we demonstrate topology optimization, which is a method used to optimize the material distribution in a specific area based on given load conditions, constraints, and performance indicators. To demonstrate the effectiveness of this approach, we propose two schemes and design several acceleration structures based on them. The optimization results demonstrate that the proposed method can be applied to structure optimization for on-chip integrated laser accelerators, producing manufacturable structures with significantly improved performance compared with previous size or shape optimization methods. These results provide new physical approaches to explore ultrafast dynamics in matter, with important implications for future laser particle accelerators based on photonic chips.

关键词

Keywords

Laser-driven particle accelerationDielectric grating acceleratorInverse Smith-Purcell effectTopology optimization

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