Electron beam cooling in intense focussed laser pulses

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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.
Original languageEnglish
Title of host publicationRelativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources II
EditorsDino A. Jaroszynski
Place of PublicationBellingham, Washington
DOIs
Publication statusPublished - 15 May 2017
EventSPIE Optics + Optoelectronics - Clarion Congress Hote, Prague, Czech Republic
Duration: 24 Apr 201727 Apr 2017
http://spie.org/conferences-and-exhibitions/optics-and-optoelectronics
https://spie.org/EOO/conferencedetails/harnessing-relativistic-plasma-waves

Publication series

NameProceedings of SPIE
PublisherSociety of Photo-optical Instrumentation Engineers
Volume10234
ISSN (Print)0277-786X

Conference

ConferenceSPIE Optics + Optoelectronics
CountryCzech Republic
CityPrague
Period24/04/1727/04/17
Internet address

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Keywords

  • radiation reaction
  • quantum effects
  • semi-classical model
  • beam cooling
  • stochastic photon emission
  • interaction angle
  • focussed laser pulses

Cite this

Yoffe, S., Noble, A., MacLeod, A. J., & Jaroszynski, D. A. (2017). Electron beam cooling in intense focussed laser pulses. In D. A. Jaroszynski (Ed.), Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources II [102340E] (Proceedings of SPIE; Vol. 10234). Bellingham, Washington. https://doi.org/10.1117/12.2265812