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Related Experiment Videos

Radiative damping and electron beam dynamics in plasma-based accelerators.

P Michel1, C B Schroeder, B A Shadwick

  • 1Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|October 10, 2006
PubMed
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Radiation reaction in plasma accelerators causes electron energy loss and increased energy spread. Matching the electron beam to the plasma channel can mitigate these effects.

Area of Science:

  • Plasma physics
  • Accelerator physics
  • Particle beam dynamics

Background:

  • Electrons in plasma accelerators experience betatron oscillations.
  • These oscillations cause synchrotron radiation emission, leading to energy loss.
  • Radiation reaction significantly impacts electron beam properties.

Purpose of the Study:

  • To investigate the effects of radiation reaction on electron beam dynamics in plasma-based accelerators.
  • To develop an analytical model for particle orbits and beam moments including radiation reaction.
  • To compare the analytical model with particle transport code simulations.

Main Methods:

  • Derivation of an analytical model for single particle orbits and beam moments.
  • Inclusion of the classical radiation reaction force in the model.

Related Experiment Videos

  • Comparison of the analytical model with a particle transport code.

    • Main Results:

    • Radiation reaction increases the relative energy spread of electron beams.
    • The betatron amplitude, dependent on initial transverse position, influences radiation levels.
    • Significant energy spread (several percent) can occur due to these effects.

    Conclusions:

    • Radiation reaction is a critical factor in electron beam dynamics within plasma accelerators.
    • Beam matching into the plasma channel can reduce the detrimental effects of radiation.
    • Achieving micron-sized beam radii may be necessary for effective beam matching.