Plasma-based Accelerator with Magnetic Compression
Authors: Paul F. Schmit and Nathaniel J. Fisch
Abstract:
Electron dephasing is a major gain-inhibiting effect in plasma-based accelerators. A novel method
is proposed to overcome dephasing, in which the modulation of a modest ( O(10 kG)), axial, uniform
magnetic field in the acceleration channel leads to densification of the plasma through magnetic
compression, enabling direct, time-resolved control of the plasma wave properties. The methodology
is broadly applicable and can be optimized to improve the leading acceleration approaches, including
plasma beat-wave, plasma wakefield, and laser wakefield acceleration. The advantages of magnetic
compression compared to other proposed schemes to overcome dephasing are identified.
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Submitted to: Physical Review Letters (June 2012)
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