Positron injection and acceleration on the wake driven by an electron beam in a foil-and-gas plasma.
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 (10(7) approximately 10(8)) are trapped and accelerated to approximately 5 GeV over 1 m with relatively narrow energy spread and low emittance.
Wang
X
X
University of Southern California, Los Angeles, CA 90089, USA.
Ischebeck
R
R
Muggli
P
P
Katsouleas
T
T
Joshi
C
C
Mori
W B
WB
Hogan
M J
MJ