Summary
This narrative review synthesises the landscape of particle accelerator development for high-energy physics research, drawing on over 100 proposals submitted to the US particle physics community planning exercise Snowmass'2021. The authors survey proposed facilities across multiple frontiers—from neutrino detection to multi-TeV colliders and beyond-collider physics—and identify key technical and cost-efficiency challenges facing future accelerator development. The paper serves as an overview of present-day accelerator capabilities and the remaining engineering and physics obstacles to realising next-generation facilities.
UK applicability
This paper addresses fundamental particle physics infrastructure planning at the international and US-centric level. Its relevance to UK conditions is primarily through UK participation in international particle physics collaborations and potential involvement in future accelerator projects, though the abstract does not discuss UK-specific policy or applications.
Key measures
Technical maturity assessment of proposed facilities; coverage of accelerator types and research applications (neutrinos, colliders, multi-TeV energies, rare processes); technology domains (RF cavities, magnets, targets, sources)
Outcomes reported
The paper reviews the current state of particle accelerator technology and summarises over 100 contributed proposals from the Snowmass'2021 community planning exercise, covering beam physics, advanced concepts, and accelerator technology across multiple research frontiers.
Topic tags
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