1. THz-driven surface plasmon undulator as a compact highly directional narrow band incoherent x-ray source
- Author
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Mozhgan Hayati, Andrea Pizzi, R. Tarkeshian, Carl Schroeder, Wim Leemans, Thomas Feurer, and David Rohrbach
- Subjects
Nuclear and High Energy Physics ,Brightness ,Photon ,Physics and Astronomy (miscellaneous) ,Terahertz radiation ,530 Physics ,Physics::Optics ,01 natural sciences ,0103 physical sciences ,ddc:530 ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,010306 general physics ,Physics ,010308 nuclear & particles physics ,Surface plasmon ,Charge (physics) ,Surfaces and Interfaces ,Undulator ,500 Science ,620 Engineering ,Nuclear & Particles Physics ,Physical Sciences ,Cathode ray ,Physics::Accelerator Physics ,lcsh:QC770-798 ,Atomic physics ,Energy (signal processing) - Abstract
Physical review accelerators and beams 22(9), 090702 (2019). doi:10.1103/PhysRevAccelBeams.22.090702, We propose a short period undulator which is based on the alternating electromagnetic field pattern of THz-driven surface plasmons in a thin conductive layer on a dielectric grating. An approximate analytical model allows to assess the key performance parameters of the undulator and to estimate the emitted radiation spectrum. The specific example of a graphene based undulator is simulated in detail. For a moderate electron beam energy of 100 MeV and a bunch charge of 0.5 pC the 40 mm long undulator is shown to emit narrow band 1 keV x-ray pulses with a peak brightness of approximately 1016 photons/(s mrad2 mm2 0.1% BW). It therefore has potential for a compact and low cost x-ray source., Published by American Physical Society, College Park, MD
- Published
- 2019