|
|||||
|
|
Electron bunch compression and acceleration in the laser wakefield |
|
| Authors: | N.E. Andreev V.E. BaranovB. Cros V.E. Fortov S.V. KuznetsovG. Maynard P. Mora |
| Affiliation: | a Joint Institute for High Temperatures of RAS, Russian Academy of Sciences, Moscow, Russia b Laboratoire de Physique des Gaz et des Plasmas, CNRS-Université Paris-Sud 11, Orsay, France c Centre de Physique Theorique, CNRS, Ecole Polytechnique, Palaiseau Cedex, France d Moscow Institute of Physics and Technology (State University), Russia |
| Abstract: | The compression and acceleration of an external electron bunch into the laser wakefield is studied using 3D modeling with the LAPLAC code and compared to analytical predictions. It is shown, for a laser propagating in a plasma channel, that the nonlinear laser pulse dynamics together with the finite laser spot size influence the electron bunch compression and acceleration due to the reduction of the laser pulse group velocity. The transverse bunch dynamics and loading effect determine the final bunch charge and density and restrict the compressed sizes of the trapped and accelerated electron bunch. The dynamics of the electron bunch are illustrated with a set of parameters where the accelerated bunch acquires an energy of the order of 2 GeV, and 1% energy spread with sub-micron sizes. |
| Keywords: | Laser-plasma accelerators Electron bunch dynamics |
| 本文献已被 ScienceDirect 等数据库收录！ | |