Relative narrow bandwidth-high energy radiation can be produced through Thomson scattering, wherehighly relativistic electrons collide with a laser pulse. The bandwidth of such a source is determined, amongst others factors, by the bandwidth of the laser pulse and the energy spread of the electrons. Here we investigate how the bandwidth of such a source can be minimised, with a particular emphasis on electron bunches with a correlated energy spread of several percent, that are typical for plasma based accelerator schemes. We show that by introducing a chirp on the laser pulse it is possible to compensate the broadening effect due to the energy spread of the electrons, and obtain the same bandwidth as a quasi- monochromatic plane wave laser pulse colliding with a mono-energetic electron bunch. Ultimately, the bandwidth of a Thomson source is limited by the acceptance angle and the initial transverse momentum of electrons (emittance).

Decreasing the bandwidth of linear and non-linear Thomson scattering radiation for electron bunches with a finite energy spread / Ruijter, Marcel; Petrillo, Vittoria; Zepf, Matt. - In: PHYSICAL REVIEW. ACCELERATORS AND BEAMS. - ISSN 2469-9888. - (2021).

Decreasing the bandwidth of linear and non-linear Thomson scattering radiation for electron bunches with a finite energy spread

Marcel Ruijter
Primo
;
Vittoria Petrillo;
2021

Abstract

Relative narrow bandwidth-high energy radiation can be produced through Thomson scattering, wherehighly relativistic electrons collide with a laser pulse. The bandwidth of such a source is determined, amongst others factors, by the bandwidth of the laser pulse and the energy spread of the electrons. Here we investigate how the bandwidth of such a source can be minimised, with a particular emphasis on electron bunches with a correlated energy spread of several percent, that are typical for plasma based accelerator schemes. We show that by introducing a chirp on the laser pulse it is possible to compensate the broadening effect due to the energy spread of the electrons, and obtain the same bandwidth as a quasi- monochromatic plane wave laser pulse colliding with a mono-energetic electron bunch. Ultimately, the bandwidth of a Thomson source is limited by the acceptance angle and the initial transverse momentum of electrons (emittance).
Thomson scattering, Compton scattering, Plasma acceleration, Frequency modulation, narrow bandwidth
01 Pubblicazione su rivista::01a Articolo in rivista
Decreasing the bandwidth of linear and non-linear Thomson scattering radiation for electron bunches with a finite energy spread / Ruijter, Marcel; Petrillo, Vittoria; Zepf, Matt. - In: PHYSICAL REVIEW. ACCELERATORS AND BEAMS. - ISSN 2469-9888. - (2021).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1496967
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