Xing Zhenjiang, Yang Chuan, Li Qinming, Hu Kai, Zhu Ye, Wu Chen, Zhang Chenggong, Zhang Weiqing
Institute of Advanced Science Facilities, Shenzhen 518107, China.
State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
J Synchrotron Radiat. 2025 May 1;32(Pt 3):792-801. doi: 10.1107/S1600577525002139. Epub 2025 Apr 2.
The preliminary design and expected performance for the Angle-Resolved Photoemission Spectroscopy (ARPES) branchline at Shenzhen Superconducting Soft X-ray Free Electron Laser (SFEL) is presented. A time-delay-compensated monochromator (TDCM) in symmetric layout has been designed for spectral selection and pulse duration preservation. The TDCM is optimized using the six-dimensional K-matrix method and a start-to-end simulation of the beamline system using Fourier optics was performed. Numerical estimations indicate that the TDCM can achieve a time-bandwidth product approaching the Fourier-transform limit.
本文介绍了深圳超导软X射线自由电子激光（SFEL）角分辨光电子能谱（ARPES）支线的初步设计和预期性能。设计了一种对称布局的延时补偿单色仪（TDCM），用于光谱选择和脉冲持续时间保持。采用六维K矩阵方法对TDCM进行了优化，并利用傅里叶光学对光束线系统进行了端到端模拟。数值估计表明，TDCM可以实现接近傅里叶变换极限的时间带宽积。
