Work

Transverse beam jitter damping along the Future Circular Collider e + e − injector linacs

Year: 2025

Type: article

Abstract: Transverse stabilization of the beam is crucial for optimizing the performance of a particle accelerator, regardless of its application. The most common method for minimizing transverse beam jitter is the Balakin-Novokhatsky-Smirnov (BNS) damping technique. Although this method has been successfully implemented worldwide, it has limitations since a significant fraction of the accelerating structures are operated off crest. In this work, we propose an alternative approach to induce the required energy spread, utilizing the natural curvature of the accelerating rf field in combination with a relatively long bunch and a longitudinal wakefield. This approach achieves strong damping of the transverse beam oscillations, similar to BNS damping, while simultaneously optimizing beam quality and maximizing acceleration efficiency. We have applied this method to the design of the Future Circular Collider injector linacs, designed to reach a beam energy of up to 20 GeV. However, this method is general and can be applied in principle to any accelerator.

Source: Physical Review Accelerators and Beams

DOI: 10.1103/8wx6-9spr

Authors: S. Bettoni, A. Latina, A. Grudiev

Institutions: Paul Scherrer Institute, European Organization for Nuclear Research

Language: English

Topic: Particle accelerators and beam dynamics

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: European Commission, Horizon 2020 Framework Programme

Awards: Future Circular Collider Innovation Study, G7781731426