# High Flux Electron Beams from Laser Wakefield Accelerators Driven by Petawatt Lasers

## TL;DR

This paper demonstrates through simulations that petawatt laser-driven laser wakefield accelerators can produce extremely high flux electron beams, with potential applications across various scientific and industrial fields.

## Contribution

It provides a detailed simulation study showing how to optimize LWFA parameters for high charge electron beam production using petawatt lasers.

## Key findings

- Achieved approximately 40 nC charge with 2 PW laser in simulations.
- Predicted an instantaneous current of about 400 kA for 100 fs electron bunches.
- High flux electron beams suitable for diverse applications.

## Abstract

Laser Wakefield Accelerator (LWFA) is considered as one of the most competitive candidates for the accelerators of the next generation. With the development of high power laser technologies, LWFA has shown its potential of replacing the conventional radio-frequency (RF) accelerators due to its flexibility and adjustability. In this paper, we will study the potential high flux electron beam productions of LWFA driven by petawatt-level laser pulses. In our three dimensional particle-in-cell simulations, an optimal set of parameters gives $\sim 40\ \rm nC$ of charge with $2\ \rm PW$ laser power, thus $\sim 400\ \rm kA$ of instantaneous current if we assume the electron beam duration is 100 fs. This high flux and its secondary radiation are widely applicable in nuclear and QED physics, industrial imaging, medical and biological studies.