Criteria for emittance compensation in high-brightness photoinjectors

A critical process in high-brightness photoinjectors is emittance compensation, which brings under control the correlated transverse emittance growth due to the linear space-charge force. Although emittance compensation has been used and studied for almost two decades, the exact criteria to achieve...

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Main Authors: Chun-xi Wang, Kwang-Je Kim, Massimo Ferrario, An Wang
Format: Article
Language:English
Published: American Physical Society 2007-10-01
Series:Physical Review Special Topics. Accelerators and Beams
Online Access:http://doi.org/10.1103/PhysRevSTAB.10.104201
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spelling doaj-152ad62e903e455193021f9d7ed961162020-11-25T00:25:58ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022007-10-01101010420110.1103/PhysRevSTAB.10.104201Criteria for emittance compensation in high-brightness photoinjectorsChun-xi WangKwang-Je KimMassimo FerrarioAn WangA critical process in high-brightness photoinjectors is emittance compensation, which brings under control the correlated transverse emittance growth due to the linear space-charge force. Although emittance compensation has been used and studied for almost two decades, the exact criteria to achieve emittance compensation is not as clear as it should be. In this paper, a perturbative analysis of slice envelopes and emittance evolution close to any reference envelope is developed, via which space-charge and chromatic effects are investigated. A new criterion for emittance compensation is found, which is complementary to the well-known matching condition for the invariant envelope and agrees very well with simulations.http://doi.org/10.1103/PhysRevSTAB.10.104201
collection DOAJ
language English
format Article
sources DOAJ
author Chun-xi Wang
Kwang-Je Kim
Massimo Ferrario
An Wang
spellingShingle Chun-xi Wang
Kwang-Je Kim
Massimo Ferrario
An Wang
Criteria for emittance compensation in high-brightness photoinjectors
Physical Review Special Topics. Accelerators and Beams
author_facet Chun-xi Wang
Kwang-Je Kim
Massimo Ferrario
An Wang
author_sort Chun-xi Wang
title Criteria for emittance compensation in high-brightness photoinjectors
title_short Criteria for emittance compensation in high-brightness photoinjectors
title_full Criteria for emittance compensation in high-brightness photoinjectors
title_fullStr Criteria for emittance compensation in high-brightness photoinjectors
title_full_unstemmed Criteria for emittance compensation in high-brightness photoinjectors
title_sort criteria for emittance compensation in high-brightness photoinjectors
publisher American Physical Society
series Physical Review Special Topics. Accelerators and Beams
issn 1098-4402
publishDate 2007-10-01
description A critical process in high-brightness photoinjectors is emittance compensation, which brings under control the correlated transverse emittance growth due to the linear space-charge force. Although emittance compensation has been used and studied for almost two decades, the exact criteria to achieve emittance compensation is not as clear as it should be. In this paper, a perturbative analysis of slice envelopes and emittance evolution close to any reference envelope is developed, via which space-charge and chromatic effects are investigated. A new criterion for emittance compensation is found, which is complementary to the well-known matching condition for the invariant envelope and agrees very well with simulations.
url http://doi.org/10.1103/PhysRevSTAB.10.104201
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