Electron accelerators driven by modulated intense relativistic electron beams

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Abstract
This paper addresses the development of a new high-voltage-gradient linear accelerator. This accelerator was energized by a modulated intense relativistic electron beam with power in the multigigawatt range. A 0.2-cm-diam electron beam emerged from the accelerator with a peak current of ∼200 A and peak kinetic energy ≥60 MeV. The length of the accelerating structure was 1 m. Simple scaling laws suggest that similar accelerators with much higher average electric fields can be built.