Experimental Observation of Energy Modulation in Electron Beams Passing through Terahertz Dielectric Wakefield Structures

S. Antipov, C. Jing, M. Fedurin, W. Gai, A. Kanareykin, K. Kusche, P. Schoessow, V. Yakimenko, and A. Zholents

Phys. Rev. Lett. 108, 144801 – Published 5 April 2012

Abstract

We report the observation of a strong wakefield induced energy modulation in an energy-chirped electron bunch passing through a dielectric-lined waveguide. This modulation can be effectively converted into a spatial modulation forming microbunches with a periodicity of 0.5–1 ps and, hence, capable of driving coherent terahertz radiation. The experimental results agree well with theoretical predictions.

Received 30 November 2011

DOI:https://doi.org/10.1103/PhysRevLett.108.144801

Authors & Affiliations

S. Antipov^1,3, C. Jing^1,3, M. Fedurin², W. Gai³, A. Kanareykin¹, K. Kusche², P. Schoessow¹, V. Yakimenko², and A. Zholents⁴

¹Euclid Techlabs LLC, Solon, Ohio 44139, USA
²Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
³High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
⁴Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, USA