Title :
Laser Wakefield Acceleration of Finite Charge Electron Bunches
Author :
Andreev, Nikolay E. ; Kuznetsov, Sergey V.
Author_Institution :
Inst. for High Energy Densities, Russian Acad. of Sci., Moscow
Abstract :
Consistent analysis of the bunch charge (beam loading effect) influence on the energy characteristics of accelerated electrons is presented. In 1-D approximation, the simple analytical expression for the optimum electron bunch density is derived, which minimizes the electron energy spread when maximum bunch energy gain is achieved. For wide electron bunches, all analytical predictions are confirmed by the results of numerical modeling. First, self-consistent simulation results obtained by the code LAser-PLasma ACceleration for the new scheme of the low-energy bunch injection in front of the laser pulse are obtained and analyzed.
Keywords :
electron accelerators; particle beam bunching; particle beam injection; plasma accelerators; plasma simulation; wakefield accelerators; LAPLAC code; LAser-PLasma ACceleration; beam loading effect; energy characteristics; finite charge electron bunches; laser wakefield acceleration; low-energy bunch injection; one-dimensional numerical modeling; optimum electron bunch density; self-consistent simulation; Acceleration; Analytical models; Electron beams; Laser beams; Laser modes; Numerical models; Optical pulses; Particle beams; Plasma accelerators; Predictive models; Laser-plasma electron acceleration;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2008.2000887
