Abstract
The National User Facility for Advanced Accelerator Experimental Tests II (FACET-II) at SLAC National Accelerator Laboratory expands upon the experiments conducted at FACET. Its purpose is to build upon the decades-long experience developed conducting accelerator R at SLAC in the areas of advanced acceleration and coherent radiation techniques with high-energy electron and positron beams. This paper summarizes the motivations for the design and resulting capabilities of the FACET-II facility.
Highlights
INTRODUCTIONSLAC is a world leader in developing next-generation plasma wakefield acceleration (PWFA) technology for future accelerators (from compact systems to large-scale colliders) through operating the world’s only high-energy electron and positron beam-driven plasma facility
SLAC is a world leader in developing next-generation plasma wakefield acceleration (PWFA) technology for future accelerators through operating the world’s only high-energy electron and positron beam-driven plasma facility
The Department of Energy (DOE) Advanced Accelerator Strategy Report defined a series of milestones for progress in advanced acceleration technology
Summary
SLAC is a world leader in developing next-generation plasma wakefield acceleration (PWFA) technology for future accelerators (from compact systems to large-scale colliders) through operating the world’s only high-energy electron and positron beam-driven plasma facility. Phased upgrades to FACET-II are expected to provide stable production of high peak-current positrons with nanoCoulomb charge using the existing FACET positron source and FACET-II 10 GeV linac This will represent a capability unique in the world, enabling experimental investigations into the optimal technique for high-gradient positron acceleration in plasma. The combination of high-intensity electron and positron beams, a synchronized high-power laser, and interaction regions with specialized diagnostics opens the door to an even broader experimental program including dielectric wakefield acceleration [15], diverse physics experiments such as strong-field QED, and testing technology needed to develop demonstration facilities. We describe the expected performance of the accelerator, including beam parameters for the present set of operational modes, as well as the performance of the experimental laser and diagnostics
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