Li Xin. Laser ray-tracing phenomenal model at far field[J]. High Power Laser and Particle Beams, 2015, 27: 032003. doi: 10.11884/HPLPB201527.032003
Citation: Yin Jiapeng, Yuan Xiaohui, Zhou Zusheng, et al. Novel electron source based on interaction between high power laser and metal wire[J]. High Power Laser and Particle Beams, 2021, 33: 094003. doi: 10.11884/HPLPB202133.210244

Novel electron source based on interaction between high power laser and metal wire

doi: 10.11884/HPLPB202133.210244
Funds:  National Natural Science Foundation of China (U1832185)
More Information
  • Author Bio:

    Yin Jiapeng, yinjiapeng@sjtu.edu.cn

  • Corresponding author: Liu Shengguang, liushg@sjtu.edu.cn
  • Received Date: 2021-06-18
  • Rev Recd Date: 2021-07-26
  • Available Online: 2021-09-04
  • Publish Date: 2021-09-15
  • Electron source generates electron bunch and dominates the electron beam quality for an accelerator. We put forward a novel mechanism of electron source in this paper. A great amount of hot electrons with several hundred keV can be generated during the interaction process between high power laser and metal wire, and some of them fly forward along the wire, guided by EM field. We generate electron beam and measure beam parameters downstream the Au wire, W wire and Cu wire experimentally. 3 nC electrons can be collected by a Faraday-cup for a single shot. Electron energy spectrum is between 0−240 keV continually, and there is a density peak at 100 keV. RF buncher cavity can be used to compress the bunch length short enough for further RF acceleration in main accelerator. Start-to-end simulation has been done with ASTRA code. Electron beam with 55 ps length and 1 nC charge is injected into a 2-cell RF buncher cavity, it can be compressed into 27 ps long, which satisfies the general requirement of the main accelerator on the electron source.
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