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Conference Paper

Linear Electron Acceleration in THz Waveguides

MPS-Authors
/persons/resource/persons136024

Miller,  R. J. D.
University of Toronto, Toronto, Canada;
Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

External Resource

http://accelconf.web.cern.ch/AccelConf/IPAC2014/papers/weoab03.pdf
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weoab03.pdf
(Publisher version), 338KB

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Citation

Nanni, E. A., Graves, W. S., Hong, K.-H., Huang, W. R., Ravi, K., Wong, L. J., et al. (2014). Linear Electron Acceleration in THz Waveguides. In IPAC2014: Proceedings of the 5th International Particle Accelerator Conference (pp. 1896-1899). Geneva, Switzerland: Joint Accelerator Conferences Website JACoW.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0026-D0EF-B
Abstract
We report the first experimental demonstration of linear electron acceleration using an optically generated singlecycle THz pulse centered at 0.45 THz. 7 keV of acceleration is achieved using 10 μJ THz pulses in a 3 mm interaction length. The THz pulse is produced via optical rectification of a 1.2 mJ, 1 μm laser pulse with a 1 kHz repetition rate. The THz pulse is coupled into a dielectric-loaded circular waveguide with 10 MeV/m on-axis accelerating gradient. A 25 fC input electron bunch is produced with a 60 keV DC photo-emitting cathode. The achievable accelerating gradient in the THz structures being investigated will scale rapidly by increasing the IR pulse energy (100 mJ - 1 J) and correspondingly the THz pulse energy. Additionally, with recent advances in the generation of THz pulses via optical rectification, in particular improvements to efficiency and generation of multi-cycle pulses, GeV/m accelerating gradients could be achieved. An ultra-compact high-gradient THz accelerator would be of interest for a wide variety of applications.