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Optimized stability of a modulated driver in a plasma wakefield accelerator

Published online by Cambridge University Press:  22 July 2016

R. Martorelli  and
A. Pukhov
R. Martorelli*
Affiliation:
Institut für Theoretische Physik I, Heinrich-Heine-Universität, 40255 Düsseldorf, Germany
A. Pukhov
Affiliation:
Institut für Theoretische Physik I, Heinrich-Heine-Universität, 40255 Düsseldorf, Germany
*
Address correspondence and reprint requests to: R. Martorelli, Institut für Theoretische Physik I, Heinrich-Heine-Universität, 40255 Düsseldorf, Germany. E-mail: roberto@tp1.uni-duesseldorf.de
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Abstract

We analyze the transverse stability for a configuration of multiple Gaussian bunches subject to the self-generated plasma wakefield. Through a semi-analytical approach we first study the equilibrium configuration for the modulated beam and then we investigate the evolution of the equilibrium configuration due to the emittance-driven expansion of the beam front that results in a rigid backward shift. The rear-directed shift brings the modulated beam out of the equilibrium, with the possibility for some of the bunch particles to be lost with a consequent deterioration of the driver. We look therefore for the proper position of the single bunches that maximize the stability without severely affecting the accelerating field behind the driver. We then compare the results with three-dimensional particle in cell simulations.

Keywords

Plasma wakefieldAcceleratorsProton beam
Type
Research Article
Information
Laser and Particle Beams , Volume 34 , Issue 3 , September 2016 , pp. 519 - 526
Copyright
Copyright © Cambridge University Press 2016 

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References

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