Novel post-acceleration method for the laser driven ions: towards 100MeV energy

激光驱动离子加速领域的最新进展使我们有可能实现紧凑型离子加速器系统。激光驱动离子具有超小的加速场、高的峰值电流和低的横向发射度等特点。同时，束流表现出较大的发散角和较宽的能量分布，导致低密度的离子束远离源位置。在这项研究中，我们试图将附加的加速场和聚焦场施加到从源发射的离子上。额外的磁场来自于目标逃逸电子的回收和特殊设计的靶座的结合。

The recent progress in the laser-driven ion acceleration field make us possible to achieve compact ion accelerator system. The laser-driven ion have peculiar characteristics, such as, ultra-small acceleration field, high peak current, and low transverse emittance. At the same time the beam shows large divergence angle and broad energy spread, resulting the low density ion beam away from the source position. In this research we try to apply the additional acceleration and focusing fields towards the ions emitted from the source. The additional field originates from the combination between the recycling of the "escape electrons from the target" and the special design target holder.