Speaker
Description
A key challenge in Laser Wakefield Acceleration (LWFA) is to achieve electron beams having high spectral brightness, particularly with high charge and low energy spread. We address this challenge by tailoring density gradients in a gas cell. This provides a way to tune with a high precision the laser interaction with the plasma and enhance electron beam quality.
During experiments using the Helmholtz-Zentrum Dresden-Rossendorf DRACO laser facility,
using LWFA and ionization injection in a tailored plasma in a gas cell, we have consistently produced electron beams with high energy-divergence spectral brightness peaks of 8pC/MeV/mrad and divergence of 0.5 mrad. PIC simulations confirmed the effects resulting from the optimization of the plasma density profile.
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 871124 Laserlab-Europe, and was granted access to the HPC resources of TGCC and CINES under allocation 2023-A0170510062 (Virtual Laplace) made by GENCI.
