Design of a prototype laser-plasma injector for the DESY-II synchrotron

TL;DR

This paper proposes a prototype laser-plasma injector designed to deliver low-energy spread electron bunches for the DESY-II synchrotron, utilizing conventional technology to improve beam quality.

Contribution

It introduces a practical design for a laser-plasma injector that reduces energy spread and jitter using existing accelerator components.

Findings

Design achieves sub-per-mille energy spread and jitter

Utilizes conventional components like chicane and RF cavity

Enables laser-plasma accelerators as injectors for synchrotrons

Abstract

The present state of progress in laser wakefield acceleration encourages considering it as a practical alternative to conventional particle accelerators. A promising application would be to use a laser-plasma accelerator as an injector for a synchrotron light source. Yet, the energy spread and jitter of the laser-plasma beam pose a significant difficulty for an efficient injection. In this paper we propose a design of a prototype injector to deliver 500 MeV low-intensity electron bunches to the DESY-II electron synchrotron. The design utilizes presently available conventional accelerator technology, such as a chicane and an X-band radio frequency cavity, to reduce the energy spread and jitter of the electron beam down to a sub-per-mille level.