Generation of high-brilliance electron beams via temporal pulse-shaping technique

超亮电子束的产生是未来X射线和γ射线光源发展的关键研究项目之一。在本研究中，我们研究了电子束的时间整形技术，以实现超小发射度。我们研制了用于测量电子束脉冲波形的偏转腔和用于测量电子束发射度的狭缝屏装置。X射线自由电子激光振荡器和激光康普顿散射γ射线光源的设计研究表明，时间形状电子源的超小发射束是这类光源的关键。

Generation of ultra-bright electron beams is one of the critical R&D items in the development of future X-ray and γ-ray light sources. In this research, we have studied on technologies for temporal shaping of electron beams to achieve ultra-small emittance. We have developed a deflecting RF cavity for an electron beam pulse shape measurement, a slit-screen apparatus for an electron beam emittance measurement. Design study of an X-ray FEL oscillator and a laser Compton scattered γ-ray light source revealed that ultra-small emittance beams from temporally-shaped electron sources are essential for such light sources.