Matrix model for collective phenomena in electron beam’s longitudinal phase space

Abstract The possibility to predict, characterize and minimize the presence of spurious harmonic content in the longitudinal profile of high brightness electron beams, namely the microbunching instability, has become vital to ensure accurate modeling and reliable operation of radiofrequency and plas...

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Autores principales:	Giovanni Perosa, Simone Di Mitri
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/376d7617cf1a4f62932eb4f013355f9d
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spelling	oai:doaj.org-article:376d7617cf1a4f62932eb4f013355f9d2021-12-02T15:51:15ZMatrix model for collective phenomena in electron beam’s longitudinal phase space10.1038/s41598-021-87041-02045-2322https://doaj.org/article/376d7617cf1a4f62932eb4f013355f9d2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87041-0https://doaj.org/toc/2045-2322Abstract The possibility to predict, characterize and minimize the presence of spurious harmonic content in the longitudinal profile of high brightness electron beams, namely the microbunching instability, has become vital to ensure accurate modeling and reliable operation of radiofrequency and plasma-based linear accelerators such as those driving free-electron lasers. Recently, the impact of intrabeam scattering (IBS) on the instability has been experimentally demonstrated by the authors. This work complements that experimental study by extending existing theories in a self-consistent, piece-wise calculation of IBS in single pass linacs and multi-bend transfer lines. New expressions for the IBS are introduced in two different semi-analytical models of microbunching. The accuracy of the proposed models and the range of beam parameters to which they apply is discussed. The overall modeling turns out to be a fast comprehensive tool for the optimization of linac-driven free-electron lasers.Giovanni PerosaSimone Di MitriNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Giovanni Perosa Simone Di Mitri Matrix model for collective phenomena in electron beam’s longitudinal phase space
description	Abstract The possibility to predict, characterize and minimize the presence of spurious harmonic content in the longitudinal profile of high brightness electron beams, namely the microbunching instability, has become vital to ensure accurate modeling and reliable operation of radiofrequency and plasma-based linear accelerators such as those driving free-electron lasers. Recently, the impact of intrabeam scattering (IBS) on the instability has been experimentally demonstrated by the authors. This work complements that experimental study by extending existing theories in a self-consistent, piece-wise calculation of IBS in single pass linacs and multi-bend transfer lines. New expressions for the IBS are introduced in two different semi-analytical models of microbunching. The accuracy of the proposed models and the range of beam parameters to which they apply is discussed. The overall modeling turns out to be a fast comprehensive tool for the optimization of linac-driven free-electron lasers.
format	article
author	Giovanni Perosa Simone Di Mitri
author_facet	Giovanni Perosa Simone Di Mitri
author_sort	Giovanni Perosa
title	Matrix model for collective phenomena in electron beam’s longitudinal phase space
title_short	Matrix model for collective phenomena in electron beam’s longitudinal phase space
title_full	Matrix model for collective phenomena in electron beam’s longitudinal phase space
title_fullStr	Matrix model for collective phenomena in electron beam’s longitudinal phase space
title_full_unstemmed	Matrix model for collective phenomena in electron beam’s longitudinal phase space
title_sort	matrix model for collective phenomena in electron beam’s longitudinal phase space
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/376d7617cf1a4f62932eb4f013355f9d
work_keys_str_mv	AT giovanniperosa matrixmodelforcollectivephenomenainelectronbeamslongitudinalphasespace AT simonedimitri matrixmodelforcollectivephenomenainelectronbeamslongitudinalphasespace
_version_	1718385625912049664

Matrix model for collective phenomena in electron beam’s longitudinal phase space

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