GeV-level $γ$-ray and positron beams produced by collisions of ultra-intense ultra-short laser on high-energy electron beam
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866913799376732160 |
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| author | Su, Wanqing Ma, Chunwang Cao, Xiguang Zhang, Guoqiang Wang, Yuting |
| author_facet | Su, Wanqing Ma, Chunwang Cao, Xiguang Zhang, Guoqiang Wang, Yuting |
| contents | Based on collisions between the 100 PW laser and 8 GeV superconducting linear accelerator constructing at the Shanghai hard X-ray free electron laser system (SHINE), the building of GeV-level $γ$-ray as well as positron beams are proposed according to particle-in-cell simulations. Key processes are considered involving the nonlinear inverse Compton scattering for $γ$-ray generation and the multiphoton Breit-Wheeler process for electron-positron pair production. Regardless of laser polarization, the simulations indicate that $γ$-ray beams achieve energy up to 8 GeV, brilliance around 10$^{27}$ photons/(s mm$^{2}$ mrad$^{2}$), and emittance as low as 0.1 mm mrad, while positron beams reach energy up to 7 GeV, brilliance around 4 $\times$ 10$^{24}$ positrons/(s mm$^{2}$ mrad$^{2}$), and emittance as low as 0.1 mm mrad. Various applications could benefit from the possible high-energy $γ$-ray and positron beams built at the SHINE facility, including fundamental physics of strong-field quantum electrodynamics theory validation, nuclear physics, radiopharmaceutical preparation, and imaging, etc. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2504_13595 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | GeV-level $γ$-ray and positron beams produced by collisions of ultra-intense ultra-short laser on high-energy electron beam Su, Wanqing Ma, Chunwang Cao, Xiguang Zhang, Guoqiang Wang, Yuting Accelerator Physics Nuclear Experiment Based on collisions between the 100 PW laser and 8 GeV superconducting linear accelerator constructing at the Shanghai hard X-ray free electron laser system (SHINE), the building of GeV-level $γ$-ray as well as positron beams are proposed according to particle-in-cell simulations. Key processes are considered involving the nonlinear inverse Compton scattering for $γ$-ray generation and the multiphoton Breit-Wheeler process for electron-positron pair production. Regardless of laser polarization, the simulations indicate that $γ$-ray beams achieve energy up to 8 GeV, brilliance around 10$^{27}$ photons/(s mm$^{2}$ mrad$^{2}$), and emittance as low as 0.1 mm mrad, while positron beams reach energy up to 7 GeV, brilliance around 4 $\times$ 10$^{24}$ positrons/(s mm$^{2}$ mrad$^{2}$), and emittance as low as 0.1 mm mrad. Various applications could benefit from the possible high-energy $γ$-ray and positron beams built at the SHINE facility, including fundamental physics of strong-field quantum electrodynamics theory validation, nuclear physics, radiopharmaceutical preparation, and imaging, etc. |
| title | GeV-level $γ$-ray and positron beams produced by collisions of ultra-intense ultra-short laser on high-energy electron beam |
| topic | Accelerator Physics Nuclear Experiment |
| url | https://arxiv.org/abs/2504.13595 |