Advances and opportunities in electron sources and superconducting acceleration*

Electron beams give us particle colliders, x-ray sources, electron microscopes and automobile tires. As particle accelerator know-how improves, these tools become more powerful and new applications become available. Accelerator advancement itself depends on gaining new understanding of physical phenomena such as photoemission, superconductivity, and the dynamics of non-neutral plasmas. Recently, new understanding has been possible thanks to an interdisciplinary approach that combines expertise in beams with that in materials, condensed matter physics, and surface chemistry. This talk will look at some of the recent progress and at the impact on future particle accelerator-based tools and applications.