Phys. Rev. ST Accel. Beams 9, 054401 (2006) [8 pages]Transverse impedance of axially symmetric tapered structures
We determine the low frequency transverse impedance of axially symmetric tapered structures. Higher-order perturbation theory is used to improve previous estimates due to Yokoya and Stupakov. For linear tapers, accurate numerical results are obtained using the ABCI electromagnetic simulation code. Based upon insight gained from the perturbation calculations, we introduce a simple parametrization that provides an excellent fit to all of our ABCI data—including cases with gradual and steep tapers as well as large and small change in cross section. This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevSTAB.9.054401
DOI:
10.1103/PhysRevSTAB.9.054401
PACS:
41.20.Jb, 41.60.−m
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