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

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.
Authors:
; ; ;  [1]
  1. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
Publication Date:
OSTI Identifier:
22227852
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 8; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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