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@inproceedings{kuzikov:ipac2021-wepab165,
author = {S.V. Kuzikov},
title = {{Metamaterial Waveguide HOM Loads for SRF Accelerating Cavities}},
booktitle = {Proc. IPAC'21},
pages = {2994--2997},
eid = {WEPAB165},
language = {english},
keywords = {HOM, GUI, vacuum, cavity, SRF},
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-WEPAB165},
url = {https://jacow.org/ipac2021/papers/wepab165.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-WEPAB165},
abstract = {{Suppression of beam induced HOMs is necessary for most SRF accelerating cavities driven with high currents. One of the problems in design of a HOM load is that vacuum compatible materials with high enough imaginary part of the dielectric permittivity, which provides absorption, have also a high real part of the permittivity. This does not allow absorbing RF radiation at short distance and in broad frequency band. We propose considering artificial metamaterials where besides lossy dielectric pieces, an absorber with high magnetic permeability is included. In our proposal, we suggest composing a waveguide HOM load of a metamaterial consisted of well-known ceramic and ferrite plates placed periodically in a stack. Such a design provides low return losses, compactness and broad frequency range of the operation.}},
}