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Mitigation of electromagnetic pulses interfering with Thomson parabola ion spectrometers at XG-III laser facility.
Li, Zihao; Kang, Ning; Teng, Jian; Zhang, Zhimeng; Xie, Jiajie; Niu, Aihui; Liu, Huiya; Sun, Mingying; Zhou, Weimin; Li, Tingshuai.
Afiliação
  • Li Z; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China.
  • Kang N; Key Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China.
  • Teng J; Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai 200240, China.
  • Zhang Z; Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China.
  • Xie J; Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China.
  • Niu A; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China.
  • Liu H; School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China.
  • Sun M; Key Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China.
  • Zhou W; Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai 200240, China.
  • Li T; Key Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China.
Rev Sci Instrum ; 95(1)2024 Jan 01.
Article em En | MEDLINE | ID: mdl-38197767
ABSTRACT
The Thomson parabola ion spectrometer is vulnerable to intense electromagnetic pulses (EMPs) generated by a high-power laser interacting with solid targets. A metal shielding cage with a circular aperture of 1 mm diameter is designed to mitigate EMPs induced by a picosecond laser irradiating a copper target in an experiment where additionally an 8-ns delayed nanosecond laser is incident into an aluminum target at the XG-III laser facility. The implementation of the shielding cage reduces the maximum EMP amplitude inside the cage to 5.2 kV/m, and the simulation results indicate that the cage effectively shields electromagnetic waves. However, the laser-accelerated relativistic electrons which escaped the target potential accumulate charge on the surface of the cage, which is responsible for the detected EMPs within the cage. To further alleviate EMPs, a lead wall and an absorbing material (ECCOSORB AN-94) were added before the cage, significantly blocking the propagation of electrons. These findings provide valuable insights into EMP generation in large-scale laser infrastructures and serve as a foundation for electromagnetic shielding design.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article