SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
Phys Rev Lett. 2018 Jun 29;120(26):264802. doi: 10.1103/PhysRevLett.120.264802.
The fresh-slice technique improved the performance of several self-amplified spontaneous emission free-electron laser schemes by granting selective control on the temporal lasing slice without spoiling the other electron bunch slices. So far, the implementation has required a special insertion device to create the beam yaw, called a dechirper. We demonstrate a novel scheme to enable fresh-slice operation based on electron energy chirp and orbit dispersion that can be implemented at any free-electron laser facility without additional hardware.
切片技术通过选择性地控制时间激光切片而不影响其他电子束切片，从而提高了几种自放大自发辐射自由电子激光方案的性能。到目前为止，这种实现需要一种特殊的插入装置来创建束扭转，称为去啁啾器。我们展示了一种新的方案，基于电子能量啁啾和轨道色散来实现切片技术，该方案可以在任何自由电子激光设施中实施，而无需额外的硬件。
