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@inproceedings{wang:ipac2021-wepab081,
author = {D. Wang and K.L.F. Bane and R. Bereguer and T. Cui and S. De Santis and P. Gach and D. Li and T.H. Luo and T. Miller and T. Oliver and O. Omolayo and C. Steier and T.L. Swain and M. Venturini and G. Wang},
% author = {D. Wang and K.L.F. Bane and R. Bereguer and T. Cui and S. De Santis and P. Gach and others},
% author = {D. Wang and others},
title = {{The Broad-Band Impedance Budget in the Storage Ring of the ALS-U Project}},
booktitle = {Proc. IPAC'21},
pages = {2779--2782},
eid = {WEPAB081},
language = {english},
keywords = {impedance, vacuum, cavity, wakefield, storage-ring},
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-WEPAB081},
url = {https://jacow.org/ipac2021/papers/wepab081.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-WEPAB081},
abstract = {{Design work is underway for the upgrade of the Advanced Light Source (ALS-U) to a diffraction-limited soft x-rays radiation source. Like other 4th-generation light source machines, the ALS-U multiple-bend achromat storage-ring (SR) is potentially sensitive to beam-coupling impedance effects. This paper presents the SR broad-band impedance budget in both the longitudinal and transverse planes. In our modeling we follow the commonly accepted approach of separating the resistive-wall and the geometric parts of the impedance, the former being described by analytical formulas and the latter obtained by numerical electromagnetic codes (primarily CST Studio software) assuming perfectly conducting materials. We discuss the main sources of impedance. Results of our analysis are the basis for the single bunch instability study and would feedback on the design of critical vacuum components.}},
}