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Ion-channel laser growth rate and beam quality requirements

Published online by Cambridge University Press:  21 May 2018

X. Davoine ,
F. Fiúza ,
R. A. Fonseca ,
W. B. Mori  and
L. O. Silva
X. Davoine*
Affiliation:
CEA DAM DIF, 91297 Arpajon, France
F. Fiúza
Affiliation:
High Energy Density Science Division, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
R. A. Fonseca
Affiliation:
DCTI/ISCTE – Lisbon University Institute, Lisbon, Portugal GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Lisbon, Portugal
W. B. Mori
Affiliation:
University of California Los Angeles, Los Angeles, USA
L. O. Silva
Affiliation:
GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Lisbon, Portugal
*
†Email address for correspondence: xavier.davoine@cea.fr
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Abstract

In this paper, we determine the growth rate of the exponential radiation amplification in the ion-channel laser, where a relativistic electron beam wiggles in a focusing ion channel that can be created in a wakefield accelerator. For the first time the radiation diffraction, which can limit the amplification, is taken into account. The electron beam quality requirements to obtain this amplification are also presented. It is shown that both the beam energy and wiggler parameter spreads should be limited. Two-dimensional and three-dimensional particle-in-cell simulations of the self-consistent ion-channel laser confirm our theoretical predictions.

Keywords

intense particle beams
Type
Research Article
Information
Journal of Plasma Physics , Volume 84 , Issue 3 , June 2018 , 905840304
Copyright
© Cambridge University Press 2018 

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