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Laser guiding for GeV laser-plasma accelerators.

Wim Leemans1, Eric Esarey, Cameron Geddes

  • 1Lawrence Berkeley National Laboratory LOASIS Program, Accelerator and Fusion Research Division Berkeley, CA 94720, USA. wpleemans@lbl.gov

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|February 18, 2006
PubMed
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Researchers achieved near mono-energetic 100 MeV electron beams using laser wakefield accelerators. Tailoring accelerator length and beam loading are key for producing these high-quality electron beams for future accelerators.

Area of Science:

  • Plasma physics
  • Accelerator physics
  • Laser-driven particle acceleration

Background:

  • Relativistically intense laser beams require guiding for advanced accelerators.
  • Laser wakefield acceleration (LWFA) offers a pathway to compact, high-energy particle accelerators.

Purpose of the Study:

  • To discuss guiding intense laser beams in plasma channels for GeV-class laser accelerators.
  • To identify key parameters for producing monoenergetic electron beams in LWFA.

Main Methods:

  • Experiments using a channel-guided laser wakefield accelerator at Lawrence Berkeley National Laboratory (LBNL).
  • Analysis aided by particle-in-cell simulations.
  • Varying plasma lengths and densities to study their effects.

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Main Results:

  • Demonstrated production of near mono-energetic 100 MeV-class electron beams with a 10 TW laser system.
  • Identified accelerator length and beam loading as critical for monoenergetic beam production.
  • Established design criteria for optimized accelerator modules for GeV-class beams, including reduced plasma density.

Conclusions:

  • Tailoring LWFA parameters is crucial for generating high-quality electron beams.
  • LWFA shows promise for compact, high-energy accelerators and intense radiation sources.
  • Future work focuses on achieving GeV-class electron beams and comparing LWFA with conventional accelerators.