Beam loading in a laser-plasma accelerator using a near-hollow plasma channel

Journal Article · Sun Dec 15 00:00:00 EST 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4849456· OSTI ID:22218370

Schroeder, C. B.; Benedetti, C.; Esarey, E.; Leemans, W. P. ^[1]

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1. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

Beam loading in laser-plasma accelerators using a near-hollow plasma channel is examined in the linear wake regime. It is shown that, by properly shaping and phasing the witness particle beam, high-gradient acceleration can be achieved with high-efficiency, and without induced energy spread or emittance growth. Both electron and positron beams can be accelerated in this plasma channel geometry. Matched propagation of electron beams can be achieved by the focusing force provided by the channel density. For positron beams, matched propagation can be achieved in a hollow plasma channel with external focusing. The efficiency of energy transfer from the wake to a witness beam is calculated for single ultra-short bunches and bunch trains.

• OSTI ID: 22218370
• Journal Information: Physics of Plasmas, Vol. 20, Issue 12; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATION
BEAM EMITTANCE
BEAM TRANSPORT
BEAM-PLASMA SYSTEMS
ELECTRON BEAMS
ELECTRONS
ENERGY TRANSFER
LASERS
PLASMA GUNS
POSITRON BEAMS
WAKEFIELD ACCELERATORS