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Lotov, K.V.

Paper Title Page
WEJO01

 Numerical Optimization Of A Plasma Wakefield Acceleration Experiment 

  • K.V.Lotov, V.S.Tikhanovich
    Budker Institute of Nuclear Physics, Novosibirsk, Russia

The possibility of high acceleration rates has already been demonstrated by plasma wakefield accelerators driven by electron beams. The next necessary step is obviously the demonstration of high acceleration efficiency and good quality of the beam. One possible way to achieve both the efficiency and quality is to prepare matched drive and accelerated beams by removing a central slice from a single high-quality electron bunch (parent beam). For parameters of the parent beam given, the question arises how to maximize the number and energy of accelerated particles and minimize their energy spread and emittance. This question is addressed by LCODE numerical simulations. As a reference point, the design beam parameters of VEPP-5 injection complex are taken. Optimum shape of the beams, required plasma length, achievable energy gain and energy spread are found as functions of the plasma density and parent beam characteristics. The required control accuracy of adjustable beam and plasma parameters is determined.

103

MOJP16

 Acceleration of Positrons By Electron Beam-Driven Wakefield In A Plasma 

  • K.V.Lotov
    Budker Institute of Nuclear Physics, Novosibirsk, Russia

Wakefield acceleration of positron beams in electron beam-driven nonlinear plasma wave is analyzed. Three effects are analyzed which complicate positron acceleration as compared to electron acceleration: trapping of plasma electrons by the plasma wave, narrow interval of the focusing phase of the wave, and wave distortion due to beam loading.

336