Steering and Focusing Effects in TESLA Cavity due to High Order Mode and Input Couplers

Many state-of-art electron accelerator proposals incorporate TESLA-type superconducting radio-frequency (rf) cavities [1]. These standing wave rf cavities include rf input couplers and a pair of high order mode (HOM) couplers to absorb the energy associated to HOM field excited as the bunch passes t...

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Main Authors: Piot, P., Dohlus, M., Flottmann, K., Marx, M., Wipf, S.G.
Format: Conference Proceeding
Language:English
Subjects:
Computational modeling
Couplers
Electromagnetic fields
Electron accelerators
Laboratories
Numerical simulation
Parametric study
Proposals
Radio frequency
Synchrotrons
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Dohlus, M.
Flottmann, K.
Marx, M.
Wipf, S.G.
description Many state-of-art electron accelerator proposals incorporate TESLA-type superconducting radio-frequency (rf) cavities [1]. These standing wave rf cavities include rf input couplers and a pair of high order mode (HOM) couplers to absorb the energy associated to HOM field excited as the bunch passes through the cavity. In the present paper we investigate, using numerical simulations, the impact of the input and HOM couplers on the beam dynamics to zeroth and first order in initial position, and present parametric studies of the strength of these effects for various incoming beam energies. We finally study the impact of this non-asymmetric field on the beam dynamics, taking as an example the low energy section of the X-ray FEL injector.
doi_str_mv 10.1109/PAC.2005.1591742
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subjects Computational modeling
Couplers
Electromagnetic fields
Electron accelerators
Laboratories
Numerical simulation
Parametric study
Proposals
Radio frequency
Synchrotrons
title Steering and Focusing Effects in TESLA Cavity due to High Order Mode and Input Couplers
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