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@InProceedings{lindberg:napac2019-moplm20, author = {R.R. Lindberg and A. Blednykh}, title = {{Impedance Considerations for the APS Upgrade}}, booktitle = {Proc. NAPAC'19}, pages = {147--150}, paper = {MOPLM20}, language = {english}, keywords = {impedance, photon, vacuum, cavity, simulation}, venue = {Lansing, MI, USA}, series = {North American Particle Accelerator Conference}, number = {4}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {10}, year = {2019}, issn = {2673-7000}, isbn = {978-3-95450-223-3}, doi = {10.18429/JACoW-NAPAC2019-MOPLM20}, url = {http://jacow.org/napac2019/papers/moplm20.pdf}, note = {https://doi.org/10.18429/JACoW-NAPAC2019-MOPLM20}, abstract = {The APS-Upgrade is targeting a 42 pm lattice that requires strong magnets and small vacuum chambers. Hence, impedance is of significant concern. We overview recent progress on identifying and modelling vacuum components that are important sources of impedance in the ring, including photon absorbers, BPMs, and flange joints. We also show how these impact collective dynamics in the APS-U lattice.}, }