Electron beam cooling in intense focussed laser pulses

Samuel R. Yoffe; Adam Noble; Alexander J. Macleod; Dino A. Jaroszynski

doi:10.1117/12.2265812

15 May 2017 Electron beam cooling in intense focussed laser pulses

Samuel R. Yoffe, Adam Noble, Alexander J. Macleod, Dino A. Jaroszynski

Proceedings Volume 10234, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources II; 102340E (2017) https://doi.org/10.1117/12.2265812
Event: SPIE Optics + Optoelectronics, 2017, Prague, Czech Republic

Abstract

In the coming years, a new generation of high-power laser facilities (such as the Extreme Light Infrastructure) will become operational, for which it is important to understand how the interaction with intense laser pulses affects the bulk properties of relativistic electron bunches. At such high field intensities, we expect both radiation reaction and quantum effects to have a dominant role to play in determining the dynamics. The reduction in relative energy spread (beam cooling) at the expense of mean beam energy predicted by classical theories of radiation reaction has been shown to occur equally in the longitudinal and transverse directions, whereas this symmetry is broken when the theory is extended to approximate certain quantum effects. The reduction in longitudinal cooling suggests that the effects of radiation reaction could be better observed in measurements of the transverse distribution, which for real-world laser pulses motivates the investigation of the angular dependence of the interaction. Using a stochastic single-photon emission model with a (Gaussian beam) focussed pulse, we find strong angular dependence of the stochastic heating.

Conference Presentation

Citation Download Citation

Samuel R. Yoffe, Adam Noble, Alexander J. Macleod, and Dino A. Jaroszynski "Electron beam cooling in intense focussed laser pulses", Proc. SPIE 10234, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources II, 102340E (15 May 2017); https://doi.org/10.1117/12.2265812

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