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Design of a time-delay-compensated monochromator for the ARPES endstation at S3FEL
Zhenjiang Xing1, Chuan Yang1, Qinming Li1
1Institute of Advanced Science Facilities, Shenzhen 518107, China.
Abstract:
The preliminary design and expected performance for the Angle-Resolved Photoemission Spectroscopy (ARPES) branchline at Shenzhen Superconducting Soft X-ray Free Electron Laser (S3FEL) 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.
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