Phys. Rev. Lett. 101, 124801 (2008) [4 pages]Positron Injection and Acceleration on the Wake Driven by an Electron Beam in a Foil-and-Gas PlasmaReceived 11 March 2008; published 17 September 2008 A novel approach for generating and accelerating positron bunches in a plasma wake is proposed and modeled. The system consists of a plasma with an embedded thin foil into which two electron beams are shot. The first beam creates a region for accelerating and focusing positrons and the second beam provides positrons to be accelerated. Monte Carlo and 3D PIC simulations show a large number of positrons (107∼108) are trapped and accelerated to ∼5 GeV over 1 m with relatively narrow energy spread and low emittance. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.124801
DOI:
10.1103/PhysRevLett.101.124801
PACS:
41.75.Ht, 41.75.Lx, 52.40.Mj
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