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@inproceedings{torrisi:ipac2021-mopab353,
author = {G. Torrisi and M. Behtouei and V.A. Dolgashev and L. Faillace and G.S. Mauro and M. Migliorati and J.B. Rosenzweig and G. Sorbello and B. Spataro and A. Variola},
% author = {G. Torrisi and M. Behtouei and V.A. Dolgashev and L. Faillace and G.S. Mauro and M. Migliorati and others},
% author = {G. Torrisi and others},
title = {{Design of a compact Ka-Band Mode Launcher for High-gradient Accelerators}},
booktitle = {Proc. IPAC'21},
pages = {1100--1102},
eid = {MOPAB353},
language = {english},
keywords = {cavity, coupling, simulation, quadrupole, accelerating-gradient},
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-MOPAB353},
url = {https://jacow.org/ipac2021/papers/mopab353.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-MOPAB353},
abstract = {{In this work, we present the RF design of a table-top Ka-Band mode launcher operating at 35.98 GHz. The structure consists of a symmetrical 4-port WR28 rectangular-TE10-to-circular-TM01 mode converter that is used to couple a peak output RF power of 5 MW (pulse length up to 50 ns and repetition rate up to 100 Hz) in Ka-Band linear accelerator able to achieve very high accelerating gradients (up to 200 MV/m). Numerical simulations have been carried out with the 3D full-wave commercial simulator Ansys HFSS in order to obtain a preliminary tuning of the accelerating field flatness at the operating frequency f0=35.98 GHz. The main RF parameters, such as reflection coefficient, transmission losses, and conversion efficiency are given together with a verification of the field azimuthal symmetry which avoids dipole and quadrupole deflecting modes. To simplify future manufacturing, reduce fabrication costs, and also reduce the probability of RF breakdown, the proposed new geometry has "open" configuration. This geometry eliminates the flow of RF currents through critical joints and allows this device to be milled from metal blocks.}},
}