Cao Lu, Liu Junhao, Wang Zhen, Huang Dazhang, Feng Chao, Zhao Zhentang
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China.
Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, People's Republic of China.
J Synchrotron Radiat. 2023 Nov 1;30(Pt 6):1054-1063. doi: 10.1107/S1600577523008263. Epub 2023 Oct 19.
Recently, a novel approach has been proposed to produce ultrashort, fully coherent high-repetition-rate EUV and X-ray radiation by combining an energy recovery linac (ERL) with the angular-dispersion-induced microbunching methodology. It is critical to maintain microbunching when the beam passes through bending magnets between the undulators, which results in difficulties supporting multiple beamlines. In this paper, the design of a multiplexed emitting system consisting of multi-bend achromats, matching sections and radiators to facilitate the multi-beamline operation is presented. Theoretical analysis and numerical simulations have been carried out and the results show that the microbunching and beam quality can be well maintained after four times of bending. Five radiation pulses with a central wavelength of 13.5 nm and peak power at the MW level have been produced by the same electron beam via this multiplexed emitting system. The proposed method holds potential in the multi-beamline operation of ERL- or storage-ring-based coherent light sources.
最近，有人提出了一种新方法，通过将能量回收直线加速器（ERL）与角色散诱导微聚束方法相结合，来产生超短、全相干的高重复率极紫外（EUV）和X射线辐射。当光束穿过波荡器之间的弯曲磁铁时，保持微聚束至关重要，这导致难以支持多条光束线。本文提出了一种由多弯消色差器、匹配段和辐射器组成的复用发射系统的设计，以促进多光束线运行。进行了理论分析和数值模拟，结果表明，经过四次弯曲后，微聚束和光束质量仍能得到很好的保持。通过该复用发射系统，同一电子束产生了五个中心波长为13.5 nm、峰值功率在兆瓦级的辐射脉冲。所提出的方法在基于ERL或存储环的相干光源的多光束线运行中具有潜力。
