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3 GHz Single Cell Cavity Optimization Design

L. Garolfi 1, 2 M. El Khaldi 2, 1
1 Dept. Accelerateurs
LAL - Laboratoire de l'Accélérateur Linéaire
Abstract : In order to develop a high gradient S-band accelerating structure, an optimized travelling wave (TW) single-cell cavity operating at the frequency of 2998.55 MHz at 30 C with 2pi/3 phase advance, is proposed. Starting from the well-known accelerating cells design developed by LAL and SLAC for linear accelerators; it is possible to improve the main RF parameters, such as quality factor, shunt impedance and group velocity, by choosing a suitable shape of the inner surface. Despite the surface electric field being considered as the only main quantity limiting the accelerating gradient; the importance of power flow has resulted from high-gradient experimental data. In this context, the modified Poynting vector quantity can be considered as a new RF breakdown constraint depending on an iris shape. RF simulations have been carried out with HFSS and CST MWS. Simulations results have shown an optimal RF characteristics.
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http://hal.in2p3.fr/in2p3-01151263
Contributor : Sabine Starita <>
Submitted on : Tuesday, May 12, 2015 - 4:15:52 PM
Last modification on : Wednesday, September 16, 2020 - 5:45:22 PM

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  • HAL Id : in2p3-01151263, version 1

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IN2P3 | LAL | CNRS

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L. Garolfi, M. El Khaldi. 3 GHz Single Cell Cavity Optimization Design. 6th International Particle Accelerator Conference - IPAC'15, May 2015, Richmond, United States. ⟨in2p3-01151263⟩

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