Phase Velocity and Particle Injection in a Self-Modulated Proton-Driven Plasma Wakefield Accelerator

Journal Article · Fri Sep 30 00:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.107.145003· OSTI ID:21611803

Pukhov, A; Kumar, N; Tueckmantel, T; Upadhyay, A ^[1]; Lotov, K ^[2]; Muggli, P ^[3]; Khudik, V; Siemon, C; Shvets, G ^[4]

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1. Institut fuer Theoretische Physik I, Universitaet Duesseldorf, 40225 Germany (Germany)
2. Budker Institute of Nuclear Physics and Novosibirsk State University, 630090 Novosibirsk (Russian Federation)
3. Max-Plank-Institut fuer Physik, 80805 Muenchen (Germany)
4. University of Texas at Austin, Department of Physics and Institute for Fusion Studies, Austin Texas 78712 (United States)

It is demonstrated that the performance of the self-modulated proton driver plasma wakefield accelerator is strongly affected by the reduced phase velocity of the plasma wave. Using analytical theory and particle-in-cell simulations, we show that the reduction is largest during the linear stage of self-modulation. As the instability nonlinearly saturates, the phase velocity approaches that of the driver. The deleterious effects of the wake's dynamics on the maximum energy gain of accelerated electrons can be avoided using side-injections of electrons, or by controlling the wake's phase velocity by smooth plasma density gradients.

• OSTI ID: 21611803
• Journal Information: Physical Review Letters, Vol. 107, Issue 14; Other Information: DOI: 10.1103/PhysRevLett.107.145003; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRONS
INSTABILITY
PHASE VELOCITY
PLASMA
PLASMA DENSITY
PLASMA WAVES
PROTONS
SIMULATION
WAKEFIELD ACCELERATORS
ACCELERATORS
BARYONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
LEPTONS
LINEAR ACCELERATORS
NUCLEONS
VELOCITY