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TY - UNPB AU - Xu, H.S. ED - Schaa, Volker RW ED - Huang, Wenhui ED - Yan, Xueqing ED - Tang, Chuanxiang ED - Li, Lu TI - Simulation Studies of Collective Beam Instabilities in the HEPS J2 - presented at SAP2023, Xichang, China, 10-12 July 2023 CY - Xichang, China T2 - Symposium on Accelerator Physics T3 - 14 LA - english AB - Collective beam instabilities are among the key limiting factors of the design performance of synchrotron light sources, and study of collective beam instabilities is generally necessary throughout the "whole life cycle" of synchrotron light sources, from design to operation. In recent years, the 4th generation synchrotron light sources have attracted worldwide attention for their higher brightness and better coherence. The High Energy Photon Source (HEPS), currently under construction in the Huairou Science City, Beijing, China, is the first 4th generation synchrotron light source in China and one of the brightest synchrotron light sources in the world. Compared with the existing 3rd generation light source, due to larger impedance of the storage ring, the collective beam instabilities are more challenging in the 4th generation synchrotron light sources. To investigate whether HEPS can achieve the target beam current and to evaluate the full-current beam parameters, we have carried out systematic studies of the main instabilities in HEPS via simulations. Here, we will present the simulation results of the main instabilities in HEPS and the effectiveness of the suppression methods. ER -