Mitigation of Collective Effects by Optics Optimisation

TL;DR

This paper reviews recent advances in optics design aimed at reducing collective effects like instabilities and space charge in high-intensity rings, supported by simulations and measurements.

Contribution

It presents new insights into optics optimization techniques specifically tailored for high-brightness and high-intensity storage rings.

Findings

Optics solutions can significantly mitigate collective effects.

Simulations and measurements validate the effectiveness of proposed designs.

Design principles are applicable to both hadron and lepton rings.

Abstract

This paper covers recent progress in the design of optics solutions to minimize collective effects such as beam instabilities, intra-beam scattering or space charge in hadron and lepton rings. The necessary steps are reviewed for designing the optics of high-intensity and high-brightness synchrotrons but also ultra-low emittance lepton storage rings, whose performance is strongly dominated by collective effects. Particular emphasis is given to proposed and existing designs illustrated by simulations and beam measurements.