• Laser and Particle Beams
  • Vol. 2022, Issue 3, 4132792 (2022)
Fang Tan, Xiao Hui Zhang, Bin Zhu, Gang Li, Yu Chi Wu, Ming Hai Yu, Yue Yang, Yong Hong Yan, Wei Fan, Ke Gong Dong, Feng Lu, Tian Kui Zhang, and Yu Qiu Gu
Author Affiliations
  • Laser Fusion Research Center China Academy of Engineering Physics Mianyang China
  • show less
    DOI: 10.1155/2022/4132792 Cite this Article
    Fang Tan, Xiao Hui Zhang, Bin Zhu, Gang Li, Yu Chi Wu, Ming Hai Yu, Yue Yang, Yong Hong Yan, Wei Fan, Ke Gong Dong, Feng Lu, Tian Kui Zhang, Yu Qiu Gu. Compact Thomson Scattering Source Based on a Mixed Injection Assisted Laser Wakefield Accelerator[J]. Laser and Particle Beams, 2022, 2022(3): 4132792 Copy Citation Text show less

    Abstract

    In order to establish a compact all-optical Thomson scattering source, experimental studies were conducted on the 45 TW Ti: sapphire laser facility. By including a steel wafer, mixed gas, and plasma mirror into a double-exit jet, several mechanisms, such as shock-assisted ionization injection, ionization injection, and driving laser reflection, were integrated into one source. So, the source of complexity was remarkably reduced. Electron bunches with central energy fluctuating from 90 to 160 MeV can be produced. Plasma mirrors were used to reflect the driving laser. The scattering of the reflected laser on the electron bunches led to the generation of X-ray photons. Through comparing the X-ray spots under different experimental conditions, it is confirmed that the X-ray photons are generated by Thomson scattering. For further application, the energy spectra and source size of the Thomson scattering source were measured. The unfolded spectrum contains a large amount of low-energy photons besides a peak near 67 keV. Through importing the electron energy spectrum into the Monte Carlo simulation code, the different contributions of the photons with small and large emitting angles can be used to explain the origin of the unfolded spectrum. The maximum photon energy extended to about 500 keV. The total photon production was 107/pulse. The FWHM source size was about 12 μm.