A method for reversing the laser modulation in a Storage ring

TL;DR

This paper introduces a simple, practical method for reversible laser modulation in storage rings that restores beam quality without requiring special ring modifications, advancing coherent light source development.

Contribution

A novel, easily implementable demodulation technique for storage rings that does not need special structural modifications or lengthy straight sections.

Findings

Simulation shows significant beam quality restoration after demodulation.

Method enables high repetition rate coherent storage ring light sources.

No special storage ring requirements are necessary.

Abstract

The pursuit of coherent radiation generation remains a key direction in the advancement of storage ring light sources. Despite the potential of laser modulation in achieving this goal, it leads to a significant decline in the quality of the electron beam. Efforts to mitigate this decline have resulted in the proposal of demodulation schemes. However, implementing modulation and demodulation within the storage ring presents significant challenges due to dynamical and spatial constraints within straight sections. In this study, we propose a straightforward and easily implementable method for achieving reversible laser modulation in a storage ring. Notably, our approach circumvents the need for special storage ring requirements, such as lengthy straight sections or bypass section. Simulation results demonstrate a substantial restoration of beam quality following demodulation. This innovative scheme holds great promise for the realization of high repetition rate coherent storage ring light sources.