Control of focusing forces and emittances in plasma-based accelerators using near-hollow plasma channels

Journal Article · Thu Aug 15 00:00:00 EDT 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4817799· OSTI ID:22227852

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

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

A near-hollow plasma channel, where the plasma density in the channel is much less than the plasma density in the walls, is proposed to provide independent control over the focusing and accelerating forces in a plasma accelerator. In this geometry the low density in the channel contributes to the focusing forces, while the accelerating fields are determined by the high density in the channel walls. The channel also provides guiding for intense laser pulses used for wakefield excitation. Both electron and positron beams can be accelerated in a nearly symmetric fashion. Near-hollow plasma channels can effectively mitigate emittance growth due to Coulomb scattering for high-energy physics applications.

• OSTI ID: 22227852
• Journal Information: Physics of Plasmas, Vol. 20, Issue 8; 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

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
43 PARTICLE ACCELERATORS
BEAM-PLASMA SYSTEMS
COULOMB SCATTERING
ELECTRON BEAMS
ELECTRONS
EXCITATION
FOCUSING
LASERS
PLASMA DENSITY
PLASMA FOCUS
PLASMA GUNS
POSITRON BEAMS
WAKEFIELD ACCELERATORS
WALL EFFECTS