Electron beam transfer line design for plasma driven Free Electron Lasers

TL;DR

This paper presents a novel method for designing electron beam transfer lines for plasma-driven Free Electron Lasers, utilizing a genetic algorithm and 3D tracking to optimize beam matching despite high chromaticity.

Contribution

It introduces a new design approach using the GIOTTO code with genetic algorithms for effective beam transfer line optimization in plasma-driven FELs.

Findings

Effective matching line designs achieved for high-chromaticity beams

Use of genetic algorithms improves optimization efficiency

Full 3D tracking enhances accuracy of the design process

Abstract

Plasma driven particle accelerators represent the future of compact accelerating machines and Free Electron Lasers are going to benefit from these new technologies. One of the main issue of this new approach to FEL machines is the design of the transfer line needed to match of the electron-beam with the magnetic undulators. Despite the reduction of the chromaticity of plasma beams is one of the main goals, the target of this line is to be effective even in cases of beams with a considerable value of chromaticity. The method here explained is based on the code GIOTTO [1] that works using a homemade genetic algorithm and that is capable of finding optimal matching line layouts directly using a full 3D tracking code.