Abstract
By designing a structured gas density profile between the dual-stage gas jets to manipulate electron seeding and energy chirp reversal for compressing the energy spread, we have experimentally produced high-brightness high-energy electron beams from a cascaded laser wakefield accelerator with peak energies in the range of 200–600 MeV, 0.4%–1.2% rms energy spread, 10–80 pC charge, and divergence. The maximum six-dimensional brightness is estimated as , which is very close to the typical brightness of beams from state-of-the-art linac drivers. These high-brightness high-energy beams may lead to the realization of compact monoenergetic gamma-ray and intense coherent x-ray radiation sources.
- Received 4 May 2016
DOI:https://doi.org/10.1103/PhysRevLett.117.124801
© 2016 American Physical Society