Demonstration of a Narrow Energy Spread, similar to 0.5 GeV Electron Beam from a Two-Stage Laser Wakefield Accelerator

作者：Pollock B B^*; Clayton C E; Ralph J E; Albert F; Davidson A; Divol L; Filip C; Glenzer S H; Herpoldt K; Lu W; Marsh K A; Meinecke J; Mori W B; Pak A; Rensink T C; Ross J S; Shaw J; Tynan G R; Joshi C; Froula D H

来源：Physical Review Letters, 2011, 107(4): 045001.

DOI：10.1103/PhysRevLett.107.045001

• Energetic electron
• Energy spreads
• High energy colliders
• High quality
• Laser wakefield acceleration
• Laser wakefield accelerators
• Low density
• Low-density plasmas
• Relative energies
• Relativistic plasmas
• Two stage
• Ultra high intensity lasers
• X-ray free electron lasers

Laser wakefield acceleration of electrons holds great promise for producing ultracompact stages of GeV scale, high-quality electron beams for applications such as x-ray free electron lasers and high-energy colliders. Ultrahigh intensity laser pulses can be self-guided by relativistic plasma waves (the wake) over tens of vacuum diffraction lengths, to give >1 GeV energy in centimeter-scale low density plasmas using ionization-induced injection to inject charge into the wake even at low densities. By restricting electron injection to a distinct short region, the injector stage, energetic electron beams (of the order of 100 MeV) with a relatively large energy spread are generated. Some of these electrons are then further accelerated by a second, longer accelerator stage, which increases their energy to similar to 0.5 GeV while reducing the relative energy spread to <5% FWHM.

• 出版日期2011-7-18
• 单位清华大学