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Title: THz-driven surface plasmon undulator as a compact highly directional narrow band incoherent x-ray source

Abstract

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.

Authors:
ORCiD logo; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); Swiss National Science Foundation (SNSF)
OSTI Identifier:
1562745
Alternate Identifier(s):
OSTI ID: 1780730
Grant/Contract Number:  
DEAC02-05CH11231; AC02-05CH11231; 200020-178812
Resource Type:
Published Article
Journal Name:
Physical Review Accelerators and Beams
Additional Journal Information:
Journal Name: Physical Review Accelerators and Beams Journal Volume: 22 Journal Issue: 9; Journal ID: ISSN 2469-9888
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; Surface plasmons; graphene; undulators & wigglers; x-ray lasers; terahertz techniques

Citation Formats

Rohrbach, D., Schroeder, C. B., Pizzi, A., Tarkeshian, R., Hayati, M., Leemans, W. P., and Feurer, T. THz-driven surface plasmon undulator as a compact highly directional narrow band incoherent x-ray source. United States: N. p., 2019. Web. doi:10.1103/PhysRevAccelBeams.22.090702.
Rohrbach, D., Schroeder, C. B., Pizzi, A., Tarkeshian, R., Hayati, M., Leemans, W. P., & Feurer, T. THz-driven surface plasmon undulator as a compact highly directional narrow band incoherent x-ray source. United States. https://doi.org/10.1103/PhysRevAccelBeams.22.090702
Rohrbach, D., Schroeder, C. B., Pizzi, A., Tarkeshian, R., Hayati, M., Leemans, W. P., and Feurer, T. Thu . "THz-driven surface plasmon undulator as a compact highly directional narrow band incoherent x-ray source". United States. https://doi.org/10.1103/PhysRevAccelBeams.22.090702.
@article{osti_1562745,
title = {THz-driven surface plasmon undulator as a compact highly directional narrow band incoherent x-ray source},
author = {Rohrbach, D. and Schroeder, C. B. and Pizzi, A. and Tarkeshian, R. and Hayati, M. and Leemans, W. P. and Feurer, T.},
abstractNote = {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.},
doi = {10.1103/PhysRevAccelBeams.22.090702},
journal = {Physical Review Accelerators and Beams},
number = 9,
volume = 22,
place = {United States},
year = {Thu Sep 19 00:00:00 EDT 2019},
month = {Thu Sep 19 00:00:00 EDT 2019}
}

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