Cooling of relativistic electron beams in chirped laser pulses

Samuel R. Yoffe; Adam Noble; Yevgen Kravets; Dino A. Jaroszynski

doi:10.1117/12.2182573

12 May 2015 Cooling of relativistic electron beams in chirped laser pulses

Samuel R. Yoffe, Adam Noble, Yevgen Kravets, Dino A. Jaroszynski

Author Affiliations +

Proceedings Volume 9509, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources; 950905 (2015) https://doi.org/10.1117/12.2182573
Event: SPIE Optics + Optoelectronics, 2015, Prague, Czech Republic

Abstract

The next few years will see next-generation high-power laser facilities (such as the Extreme Light Infrastructure) become operational, for which it is important to understand how interaction with intense laser pulses affects the bulk properties of a relativistic electron beam. At such high field intensities, we expect both radiation reaction and quantum effects to play a significant role in the beam dynamics. The resulting reduction in relative energy spread (beam cooling) at the expense of mean beam energy predicted by classical theories of radiation reaction depends only on the energy of the laser pulse. Quantum effects suppress this cooling, with the dynamics additionally sensitive to the distribution of energy within the pulse. Since chirps occur in both the production of high-intensity pulses (CPA) and the propagation of pulses in media, the effect of using chirps to modify the pulse shape has been investigated using a semi-classical extension to the Landau-Lifshitz theory. Results indicate that even large chirps introduce a significantly smaller change to final state predictions than going from a classical to quantum model for radiation reaction, the nature of which can be intuitively understood.

Citation Download Citation

Samuel R. Yoffe, Adam Noble, Yevgen Kravets, and Dino A. Jaroszynski "Cooling of relativistic electron beams in chirped laser pulses", Proc. SPIE 9509, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources, 950905 (12 May 2015); https://doi.org/10.1117/12.2182573

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