论文标题
康普顿后坐力在激光韦克菲尔德加速器的分期
Compton recoil effects in staging of laser wakefield accelerators
论文作者
论文摘要
能够产生> 10 GEV电子束的激光等离子体加速器可能需要等离子体镜在每个加速器阶段结束时去除未耗尽的激光能量。在血浆镜面附近，电子束可以与反射光相互作用，从而导致康普顿散射。对于现实的条件，我们表明，很大一部分电子散发出一个或多个光子，从而增加了电子束的能量传播。我们提供了用于计算此效果的分析表达式，并使用它来估计等离子镜之前所需的最小漂移空间，以满足给定的能量扩散规格。提出并探索了在多gev激光韦克菲尔德电子源中实现次级能量扩散所必需的缓解策略。
Laser plasma accelerators capable of generating >10 GeV electron beams may require plasma mirrors to remove undepleted laser energy at the end of each accelerator stage. Near the plasma mirror surface, the electron bunch can interact with the reflected light, resulting in inverse Compton scattering. For realistic conditions, we show that a significant fraction of electrons emit one or more photons, increasing the energy spread of the electron bunch. We provide an analytical expression for calculating this effect, and use it to estimate the minimum drift space required before the plasma mirror to meet given energy spread specifications. Mitigation strategies, necessary to achieve sub-percent energy spread in multi-GeV laser wakefield electron sources, are proposed and explored.
