Wakefield assisted bunch compression in storage rings

TL;DR

This paper explores a novel method to shorten bunch lengths in storage rings using wakefield effects from passive structures, enhancing terahertz radiation generation for advanced material and biological research.

Contribution

It introduces a new approach employing self-wake effects from corrugated or dielectric structures to control bunch length and shape in storage rings.

Findings

Existence of self-consistent steady states with passive structures

Potential for generating superradiant terahertz radiation

Enhanced spectral components through bunch shaping

Abstract

Equilibrium bunch lengths typical to modern day light sources of tens of picoseconds limit the spectral reach of superradiant approaches for exploring materials and biological samples. In particular, generation of terahertz radiation seems appealing for pump-probe experiments. Taking advantage of self-wakes generated by carefully chosen structure one can control the bunch length and shape the bunch profile to increase significantly the high-frequency spectral components. Numerical analysis indicates the presence of self-consistent steady states that can be obtained with passive corrugated or dielectric structures. This approach has potential applications for generating superradiant terahertz radiation and pulse shaping in circular accelerators.