Terahertz-driven linear electron acceleration
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Author(s)
Nanni, Emilio Alessandro
Hong, Kyung-Han
Ravi, Koustuban
Fallahi, Arya
Moriena, Gustavo
Dwayne Miller, R. J.
Huang, Wenqian Ronny
Kaertner, Franz X.
Date Issued
October 2015
Journal
Nature Communications
Publisher
Nature Publishing Group
Citation
Nanni, Emilio A., Wenqian R. Huang, Kyung-Han Hong, Koustuban Ravi, Arya Fallahi, Gustavo Moriena, R. J. Dwayne Miller, and Franz X. Kartner. “Terahertz-Driven Linear Electron Acceleration.” Nat Comms 6 (October 6, 2015): 8486. © 2015 Macmillan Publishers Limited
Version
Final published version
Abstract
The cost, size and availability of electron accelerators are dominated by the achievable accelerating gradient. Conventional high-brightness radio-frequency accelerating structures operate with 30–50 MeV m[superscript −1] gradients. Electron accelerators driven with optical or infrared sources have demonstrated accelerating gradients orders of magnitude above that achievable with conventional radio-frequency structures. However, laser-driven wakefield accelerators require intense femtosecond sources and direct laser-driven accelerators suffer from low bunch charge, sub-micron tolerances and sub-femtosecond timing requirements due to the short wavelength of operation. Here we demonstrate linear acceleration of electrons with keV energy gain using optically generated terahertz pulses. Terahertz-driven accelerating structures enable high-gradient electron/proton accelerators with simple accelerating structures, high repetition rates and significant charge per bunch. These ultra-compact terahertz accelerators with extremely short electron bunches hold great potential to have a transformative impact for free electron lasers, linear colliders, ultrafast electron diffraction, X-ray science and medical therapy with X-rays and electron beams.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
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DOI of Published Version
https://doi.org/10.1038/ncomms9486
