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Title: An Optimal Design for a THz Slab-Symmetric Dielectric-Loaded Accelerator

Abstract

A slab-symmetric dielectric-loaded accelerator structure, consisting of a vacuum gap between dielectric-lined conducting walls, is analyzed theoretically and computationally. The device is to be resonantly excited by an external laser source of wavelength 340 {mu}m. Analytical results for infinite and finite-width geometries are summarized, and 2D electromagnetic simulation is used to demonstrate the time-dependent filling of the structure from the external source. The resonant accelerating fields, which are nearly constant along the short transverse direction, are found to have between 10 and 15 times the amplitude of the driving radiation, with only a small (< 10%) admixture of other non-accelerating modes. Field gradients are near 100 MV/m when the structure is driven with 100 MW of terahertz power. The resonance is highly dependent on the geometry of the slots used to couple radiation into the structure, with effects on the overall Q-factor, frequency detuning, and field pattern. Possible manufacturing methods are discussed, along with an all-dielectric version of the design that would allow scaling of the structure to a wavelength of 10 {mu}m.

Authors:
 [1];  [1]
  1. Dept., of Physics and Astronomy, UCLA, Los Angeles, CA 90095-1547 (United States)
Publication Date:
OSTI Identifier:
20655214
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 737; Journal Issue: 1; Conference: 11. advanced accelerator concepts workshop, Stony Brook, NY (United States), 21-26 Jun 2004; Other Information: DOI: 10.1063/1.1842555; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; AMPLITUDES; DESIGN; DIELECTRIC MATERIALS; GEOMETRY; LASERS; MANUFACTURING; RESONANCE; SIMULATION; SLABS; TIME DEPENDENCE; TWO-DIMENSIONAL CALCULATIONS; WAVEGUIDES; WAVELENGTHS

Citation Formats

Yoder, R B, Dept. of Physics, Manhattan College, Riverdale, NY 10471, and Rosenzweig, J B. An Optimal Design for a THz Slab-Symmetric Dielectric-Loaded Accelerator. United States: N. p., 2004. Web. doi:10.1063/1.1842555.
Yoder, R B, Dept. of Physics, Manhattan College, Riverdale, NY 10471, & Rosenzweig, J B. An Optimal Design for a THz Slab-Symmetric Dielectric-Loaded Accelerator. United States. https://doi.org/10.1063/1.1842555
Yoder, R B, Dept. of Physics, Manhattan College, Riverdale, NY 10471, and Rosenzweig, J B. 2004. "An Optimal Design for a THz Slab-Symmetric Dielectric-Loaded Accelerator". United States. https://doi.org/10.1063/1.1842555.
@article{osti_20655214,
title = {An Optimal Design for a THz Slab-Symmetric Dielectric-Loaded Accelerator},
author = {Yoder, R B and Dept. of Physics, Manhattan College, Riverdale, NY 10471 and Rosenzweig, J B},
abstractNote = {A slab-symmetric dielectric-loaded accelerator structure, consisting of a vacuum gap between dielectric-lined conducting walls, is analyzed theoretically and computationally. The device is to be resonantly excited by an external laser source of wavelength 340 {mu}m. Analytical results for infinite and finite-width geometries are summarized, and 2D electromagnetic simulation is used to demonstrate the time-dependent filling of the structure from the external source. The resonant accelerating fields, which are nearly constant along the short transverse direction, are found to have between 10 and 15 times the amplitude of the driving radiation, with only a small (< 10%) admixture of other non-accelerating modes. Field gradients are near 100 MV/m when the structure is driven with 100 MW of terahertz power. The resonance is highly dependent on the geometry of the slots used to couple radiation into the structure, with effects on the overall Q-factor, frequency detuning, and field pattern. Possible manufacturing methods are discussed, along with an all-dielectric version of the design that would allow scaling of the structure to a wavelength of 10 {mu}m.},
doi = {10.1063/1.1842555},
url = {https://www.osti.gov/biblio/20655214}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 737,
place = {United States},
year = {Tue Dec 07 00:00:00 EST 2004},
month = {Tue Dec 07 00:00:00 EST 2004}
}