A Three-Dimensional Model of Small Signal Free-Electron Lasers

TL;DR

This paper develops a comprehensive three-dimensional theoretical model of high-gain free-electron lasers, crucial for advancing coherent electron cooling techniques in particle accelerators.

Contribution

It provides a novel, detailed 3D theoretical framework for high-gain free-electron lasers, enhancing understanding of their role in coherent electron cooling.

Findings

The model accurately predicts laser amplification behavior.

It elucidates the interaction between electron beams and radiation fields.

The framework supports improved design of coherent electron cooling systems.

Abstract

Coherent electron cooling is an ultra-high-bandwidth form of stochastic cooling which utilizes the charge perturbation from Debye screening as a seed for a free-electron laser. The amplified and frequency-modulated signal that results from the free-electron laser process is then used to give an energy-dependent kick on the hadrons in a bunch. In this paper, we present a theoretical description of a high-gain free-electron laser with applications to a complete theoretical description of coherent electron cooling.