Acceleration of positrons by electron beam-driven wakefields in a plasma

Journal Article · Thu Feb 15 04:00:00 EST 2007 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2434793· OSTI ID:20974844

Lotov, K V ^[1]

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1. Budker Institute of Nuclear Physics, 630090 Novosibirsk (Russian Federation)

Plasma wakefield acceleration of positron beams in the wake of a dense electron beam (in the blowout regime) is numerically analyzed. The acceleration is possible only if the energy content of the wakefield is not very high. This is in contrast to electron acceleration, for which the optimum performance requires driver currents and wave energies to be as high as possible. For positrons, the efficiency of plasma-to-witness energy exchange can amount to several tens percent, but high efficiencies require precise location of the positron beam and sophisticated beam shapes. Unlike an electron witness, the positron always gets an energy spread of about several percent caused by the transverse inhomogeneity of the accelerating field.

• OSTI ID: 20974844
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 2 Vol. 14; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM-PLASMA SYSTEMS
BLOWOUTS
EFFICIENCY
ELECTRON BEAMS
ELECTRONS
ENERGY TRANSFER
NUMERICAL ANALYSIS
PLASMA
PLASMA ACCELERATION
PLASMA GUNS
POSITRON BEAMS
POSITRONS