Electron Sources for Accelerators
Daniele Filippetto, Joe Grames, Carlos Hernandez-Garcia, Siddharth, Karkare, Philippe Piot, John Power, Yine Sun, Erdong Wang

TL;DR
This paper reviews the current state and future research directions of electron sources used in accelerators, highlighting their importance in high-energy physics and related fields.
Contribution
It provides a comprehensive summary of the Snowmass 2021 Electron Source Workshop, outlining current advancements and potential future research paths.
Findings
Reviewed state-of-the-art electron source technologies
Identified key research directions for future development
Summarized community consensus from the workshop
Abstract
Electron sources are essential to an array of electron accelerator supporting research in high-energy physics and beyond. This report summarizes the "Snowmass 2021 Electron Source Workshop" which reviewed the current state-of-the art research and identified some possible research directions.
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Taxonomy
TopicsPhotocathodes and Microchannel Plates
