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TY - UNPB AU - Yang, Y.Z. ED - Schaa, Volker RW ED - Huang, Wenhui ED - Yan, Xueqing ED - Tang, Chuanxiang ED - Li, Lu TI - Physical Research and Engineering Design of SSMB Laser Modulator J2 - presented at SAP2023, Xichang, China, 10-12 July 2023 CY - Xichang, China T2 - Symposium on Accelerator Physics T3 - 14 LA - english AB - Storage ring light source based on the principle of Steady-State Microbunching (SSMB) is a new advanced light source, which can generate coherent radiation with high average power from THz to EUV, and has broad scientific research prospects and great industrial value. The core component of SSMB storage ring is the laser modulator. Under the longitudinal bunching effect of the laser modulator, combined with the Lattice design with ultra-low longitudinal emittance of the whole ring, the microbunches running in the whole ring can be realized. Laser modulator is the first time to combine undulator, optical cavity and storage ring, and it is innovative in physical design and engineering design. Based on the dynamic process of laser-electron interaction, this paper optimizes the important parameters of laser and undulator to achieve the maximum energy modulation effect, and completes the engineering design of laser modulator under these parameters, mainly including optical cavity, undulator and vacuum system. The design of laser modulator will promote the realization of SSMB new light source, and provide reference in the field of laser-electron interaction. ER -