Report of Snowmass 21 Accelerator Frontier Topical Group 6 on Advanced Accelerators
Abstract
The Snowmass 2021 Accelerator Frontier topical group \# 6 on Advanced Accelerator Concepts, covers new R\&D concepts for particle acceleration, generation, and focusing. Based on community input, this report describes how leveraging these concepts to efficiently harness the interaction of charged particles with extremely high electromagnetic fields at very high frequencies can provide the keys to reaching ultra high acceleration gradients (GeV/m and beyond). These methods have potential to reduce the dimensions, C02 footprint, and costs of future high energy physics machines, with added potential to reduce power consumption for future e+e- and γ - γ machines to and beyond 15 TeV energies. Techniques range from laser and beam driven plasma and advanced structure accelerators to advanced phase space manipulations and generation of beams with extreme parameters.
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