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<p>Polarized high-energy photon gamma rays are excellent probes for nuclear and particle physics research. Recently, a unique method for generating MeV energy-tunable gamma rays, the Laser Compton Slant Scattering (LCSS) mode, was implemented at the Shanghai Laser Electron Gamma Source (SLEGS). A study of the polarization properties of the LCSS gamma beam at SLEGS combined theoretical simulations with experimental measurements. The intensity of spatial distributions and Stokes parameters were systematically simulated for LCSS of linearly/circularly polarized laser photons and unpolarized relativistic electrons. The measured scattered gamma spatial distributions at three typical slant incidence angles were in agreement with the simulation for the linearly polarized laser. The results imply that the polarization degree of the incident photon is almost completely transferred to the scattered gamma rays for any incident angle, while the direction of polarization of the scattered gamma ray changes with the incident and scattering angles.</p>

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The study of polarization properties of laser Compton slant scattering gamma beam at SLEGS

  • 期刊论文

  • 发表日期：

    2026年3月26日

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  • Xiang-Fei Wang,
  • Kai-Jie Chen,
  • Hang-Hua Xu,
  • Gong-Tao Fan,
  • Zi-Rui Hao,
  • Zhen-Wei Wang,
  • Long-Xiang Liu,
  • Yue Zhang,
  • Sheng Jin,
  • Qian-kun Sun,
  • Zhi-Cai Li,
  • Pu Jiao,
  • Meng-Die Zhou,
  • Yu-Long Shen,
  • Meng-Ke Xu,
  • Hong-Wei Wang

摘要

Polarized high-energy photon gamma rays are excellent probes for nuclear and particle physics research. Recently, a unique method for generating MeV energy-tunable gamma rays, the Laser Compton Slant Scattering (LCSS) mode, was implemented at the Shanghai Laser Electron Gamma Source (SLEGS). A study of the polarization properties of the LCSS gamma beam at SLEGS combined theoretical simulations with experimental measurements. The intensity of spatial distributions and Stokes parameters were systematically simulated for LCSS of linearly/circularly polarized laser photons and unpolarized relativistic electrons. The measured scattered gamma spatial distributions at three typical slant incidence angles were in agreement with the simulation for the linearly polarized laser. The results imply that the polarization degree of the incident photon is almost completely transferred to the scattered gamma rays for any incident angle, while the direction of polarization of the scattered gamma ray changes with the incident and scattering angles.