Applied Sciences (Jun 2019)

Energy Enhancement and Energy Spread Compression of Electron Beams in a Hybrid Laser-Plasma Wakefield Accelerator

  • Ying Wu,
  • Changhai Yu,
  • Zhiyong Qin,
  • Wentao Wang,
  • Zhijun Zhang,
  • Rong Qi,
  • Ke Feng,
  • Lintong Ke,
  • Yu Chen,
  • Cheng Wang,
  • Xiaojun Yang,
  • Yuxin Leng,
  • Jiansheng Liu,
  • Ruxin Li,
  • Zhizhan Xu

DOI
https://doi.org/10.3390/app9122561
Journal volume & issue
Vol. 9, no. 12
p. 2561

Abstract

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We experimentally demonstrated the generation of narrow energy-spread electron beams with enhanced energy levels using a hybrid laser-plasma wakefield accelerator. An experiment featuring two-color electron beams showed that after the laser pump reached the depletion length, the laser-wakefield acceleration (LWFA) gradually evolved into the plasma-driven wakefield acceleration (PWFA), and thereafter, the PWFA dominated the electron acceleration. The energy spread of the electron beams was further improved by energy chirp compensation. Particle-in-cell simulations were performed to verify the experimental results. The generated monoenergetic high-energy electron beams are promising to upscale future accelerator systems and realize monoenergetic γ -ray sources.

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