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@inproceedings{xu:ipac2021-mopab102, author = {H.S. Xu and X.Y. Li and N. Wang}, title = {{CSR Impedance in HEPS Storage Ring}}, booktitle = {Proc. IPAC'21}, pages = {379--382}, eid = {MOPAB102}, language = {english}, keywords = {impedance, storage-ring, lattice, synchrotron, vacuum}, venue = {Campinas, SP, Brazil}, series = {International Particle Accelerator Conference}, number = {12}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {08}, year = {2021}, issn = {2673-5490}, isbn = {978-3-95450-214-1}, doi = {10.18429/JACoW-IPAC2021-MOPAB102}, url = {https://jacow.org/ipac2021/papers/mopab102.pdf}, note = {https://doi.org/10.18429/JACoW-IPAC2021-MOPAB102}, abstract = {{High Energy Photon Source (HEPS) is under construction in Beijing, China. The relatively complete impedance model has been built up based on the element-by-element impedance calculation. However, Coherent Synchrotron Radiation (CSR) impedance, which might affect the longitudinal performance of the beam, was not included in the impedance model of the HEPS storage ring in the preliminary design stage. For completeness, we would like to take the CSR impedance into consideration. The most important contributions to the total CSR impedance come from the bending magnets and insertion devices. We therefore calculate the CSR impedance from both above mentioned elements in HEPS storage ring. The influence of the CSR impedance on the microwave instability threshold is studied and presented.}}, }