Continuous and Coordinated Efforts of Structure Wakefield Acceleration (SWFA) Development for an Energy Frontier Machine

TL;DR

This paper reviews the development of structure wakefield acceleration (SWFA) for future linear colliders, emphasizing the need for coordinated efforts in drive beam, main beam, and structure technologies to advance the field.

Contribution

It provides a comprehensive overview of SWFA technologies and outlines a roadmap for synchronized research efforts to accelerate progress in the next decade.

Findings

SWFA is suitable for positron acceleration and emittance preservation.

Two main SWFA schemes are under development: CWA and TBA.

Coordination of research efforts is crucial for technological advancement.

Abstract

Structure wakefield acceleration (SWFA) is well suited for the linear collider (LC) application due to its natural ability to accelerate positrons and preserve emittance. Under the SWFA roadmap, which was developed in response to Snowmass 2013 recommendations, four principal technologies: drive beam, main beam, wakefield structure, and LC facility design, have been investigated. The two SWFA schemes under development are the collinear wakefield accelerator (CWA), in which the drive and main beam follow the same path through a structure, and the two-beam accelerator (TBA), where the drive and main beam pass through different structures. To further advance the SWFA technology in the next decade, continuous and coordinated efforts must be carried out in a more synchronized way. This whitepaper is written to address the research needs in SWFA for preparation of Snowmass 2022.