Subrelativistic electron source for Dielectric Laser Acceleration, elements of design

TL;DR

This paper proposes a novel sub-relativistic electron source using a pulsed DC gun and a linear FEA, integrated with a dielectric laser accelerator, aiming for compact, all-in-vacuum setups with nano-structured diagnostics.

Contribution

It introduces an innovative design combining a pulsed DC gun with a linear FEA and dielectric laser acceleration, emphasizing nano-structured diagnostics and a compact vacuum chamber.

Findings

Design solutions for a sub-relativistic electron source.

Discussion of experimental orientations and theoretical issues.

Integration of nano-structured diagnostics within the setup.

Abstract

We describe and discuss solutions for an innovating sub-relativistic electron source, based on pulsed DC gun, including linear (1D) Field Emitter Array (FEA) associated immediately with Laser Dielectric Accelerator (DLA) stage. That setup is designed to avoid any standard accelerator component (electrostatic or magnetic macroscopic dipole ...) Parts of the diagnostics, including spectrometer and all diagnostics, are planned to rely on nano-structures. Then the entire setup -pulsed source, laser and measurements ends excepted- should be enclosed inside a decimeter range vacuum chamber. The goal of that paper is to suggest experimental orientations, which are discussed inside our laboratory. However we shall also notice the theoretical issues among which we actually work, these one could be presented in a next work.