Ponderomotive bunching of a relativistic electron beam for a superradiant Thomson source

Imposing a density modulation on an electron beam may improve the brightness of a Thomson source by orders of magnitude via superradiant emission. In this paper, we analytically and numerically analyze electron beam modulation via the ponderomotive force due to the copropagating beat wave formed by...

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Published inPhysical review. Accelerators and beams Vol. 26; no. 7; p. 074401
Main Authors Schaap, B. H., Sweers, C. W., Smorenburg, P. W., Luiten, O. J.
Format Journal Article
LanguageEnglish
Published American Physical Society 01.07.2023
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Summary:Imposing a density modulation on an electron beam may improve the brightness of a Thomson source by orders of magnitude via superradiant emission. In this paper, we analytically and numerically analyze electron beam modulation via the ponderomotive force due to the copropagating beat wave formed by two laser pulses at different frequencies. We show that energy modulation favorably scales with electron beam energy but is limited by the interaction length imposed by the finite waist of the laser pulses. Additionally, the effect of initial emittance and energy spread on the quality of microbunching is studied. Finally, we propose a superradiant extreme ultraviolet Thomson source based on ponderomotive bunching.
ISSN:2469-9888
2469-9888
DOI:10.1103/PhysRevAccelBeams.26.074401