论文标题
基于小振幅短周期的光源的原子建模和表征定期弯曲晶体
Atomistic modelling and characterizaion of light sources based on small-amplitude short-period periodically bent crystals
论文作者
论文摘要
基于定期振幅和短期（SASP）定期弯曲的超层压电子和正电子的伽马射线光源的可行性通过严格的数值建模来证明，这些振幅和短期（SASP）证明了与所有弹丸与所有晶体环境相互作用的相互作用。 并分析了10 GEV电子和正电子梁发出的光谱分布，光彩，光子数量和辐射功率的数值数据。 论文中提出的案例研究是指SLAC设施可用的Facet-II梁。结果表明，SASP弯曲产生了GEV光子能量范围内的辐射增强，其中辐射的峰值光彩可能高于10^{24}光子/s/s/mrad^2/mm^2/0.1BW。 可以通过改变弯曲的幅度和周期来调节辐射的参数。
The feasibility of gamma-ray light sources based on the channeling phenomenon of ultrarelativistic electrons and positrons in oriented crystals that are periodically bent with Small Amplitude and Short Period (SASP) is demonstrated by means of rigorous numerical modelling that accounts for the interaction of a projectile with all atoms of the crystalline environment. Numerical data on the spectral distribution, brilliance, number of photons and power of radiation emitted by 10 GeV electron and positron beams passing through diamond, silicon and germanium crystals are presented and analyzed. The case studies presented in the paper refer to the FACET-II beams available at the SLAC facility. It is shown that the SASP bending gives rise to the radiation enhancement in the GeV photon energy range where the peak brilliance of radiation can be as high as on the 10^{24} photons/s/mrad^2/mm^2/0.1BW. The parameters of radiation can be tuned by varying the amplitude and period of bending.
