Tuning the electron energy by controlling the density perturbation position in laser plasma accelerators

Abstract

A density perturbation produced in an underdense plasma was used to improve the quality of electron bunches produced in the laser-plasma wakefield acceleration scheme. Quasi-monoenergetic electrons were generated by controlled injection in the longitudinal density gradients of the density perturbation. By tuning the position of the density perturbation along the laser propagation axis, a fine control of the electron energy from a mean value of 60 MeV to 120 MeV has been demonstrated with a relative energy-spread of 15 +/- 3.6%, divergence of 4 +/- 0.8 mrad and charge of 6 +/- 1.8 pC.

7 pages, 8 figures

References in corpus (4)

• Generating multi-GeV electron bunches using single stage laser wakefield acceleration in a 3D nonlinear regime
• The Effect of Laser Focusing Conditions on Propagation and Monoenergetic Electron Production in Laser Wakefield Accelerators
• Magnetic control of particle-injection in plasma based accelerators
• Controlled Betatron X-Ray Radiation from Tunable Optically Injected Electrons

Cited by in corpus (4)

• Stable and high quality electron beams from staged laser and plasma wakefield accelerators
• Controlling the generation of high frequency electromagnetic pulses with relativistic flying mirrors using an inhomogeneous plasma
• Convergence in nonlinear laser wakefield accelerators modeling in a Lorentz-boosted frame
• Probing electron acceleration and X-ray emission in laser-plasma accelerator