Simulation study of two color laser Wakefield acceleration

Abstract

Conventional accelerators used for particle acceleration are expensive due to their huge size. Moreover, the electrical breakdowns of the walls limit the maximum electric field gradient to 100 MVm−1. On the other hand, plasma-based particle accelerators driven by laser or particle-beam show great potential owing to their large acceleration gradient that leads to compact structures. In this vein, two color laser Wakefield acceleration is studied using two dimensional particle in cell (2D-PIC) simulation. Our simulations show that more stable energy spectra can be produced via two-color laser Wakefield scheme compared to single color scheme. For given simulation parameters, 500\u2005MeV energy gain is observed in 3.4\u2005mm long plasma channel. The effect of relative time delays of the two color lasers and polarization effect of second laser on electron bunch acceleration is also presented. Such good quality electron-bunches are suitable candidate for future XFEL and Betatron sources.