Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam
Abstract
Here, we present the design of a volumetric metamaterial (MTM) structure and its interaction with a relativistic electron beam. This novel structure has promising applications in particle beam diagnostics, acceleration, and microwave generation. The volumetric MTM has a cubic unit cell allowing structures of arbitrary size to be configured as an array of identical cells. This structure allows the exploration of the properties of a metamaterial structure without having to consider substrates or other supporting elements. The dispersion characteristics of the unit cell are obtained using eigenmode simulations in the hfss code and also using an effective medium theory with spatial dispersion. Good agreement is obtained between these two approaches. The lowest-order mode of the MTM structure is found to have a negative group velocity in all directions of propagation. The frequency spectrum of the radiation from a relativistic electron beam passing through the MTM structure is calculated analytically and also calculated with the cst code, with very good agreement. The radiation pattern from the relativistic electron beam is found to be backward Cherenkov radiation, which is a promising tool for particle diagnostics. Calculations are also presented for the application of a MTM-based wakefield accelerator as a possible all-metal replacementmore »
- Authors:
-
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
- Publication Date:
- Research Org.:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP); US Air Force Office of Scientific Research (AFOSR)
- OSTI Identifier:
- 1212118
- Alternate Identifier(s):
- OSTI ID: 1454578
- Grant/Contract Number:
- SC0010075; FA 550-12-1-0489
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Special Topics. Accelerators and Beams
- Additional Journal Information:
- Journal Name: Physical Review Special Topics. Accelerators and Beams Journal Volume: 18 Journal Issue: 8; Journal ID: ISSN 1098-4402
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE
Citation Formats
Lu, Xueying, Shapiro, Michael A., and Temkin, Richard J. Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam. United States: N. p., 2015.
Web. doi:10.1103/PhysRevSTAB.18.081303.
Lu, Xueying, Shapiro, Michael A., & Temkin, Richard J. Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam. United States. https://doi.org/10.1103/PhysRevSTAB.18.081303
Lu, Xueying, Shapiro, Michael A., and Temkin, Richard J. Tue .
"Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam". United States. https://doi.org/10.1103/PhysRevSTAB.18.081303.
@article{osti_1212118,
title = {Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam},
author = {Lu, Xueying and Shapiro, Michael A. and Temkin, Richard J.},
abstractNote = {Here, we present the design of a volumetric metamaterial (MTM) structure and its interaction with a relativistic electron beam. This novel structure has promising applications in particle beam diagnostics, acceleration, and microwave generation. The volumetric MTM has a cubic unit cell allowing structures of arbitrary size to be configured as an array of identical cells. This structure allows the exploration of the properties of a metamaterial structure without having to consider substrates or other supporting elements. The dispersion characteristics of the unit cell are obtained using eigenmode simulations in the hfss code and also using an effective medium theory with spatial dispersion. Good agreement is obtained between these two approaches. The lowest-order mode of the MTM structure is found to have a negative group velocity in all directions of propagation. The frequency spectrum of the radiation from a relativistic electron beam passing through the MTM structure is calculated analytically and also calculated with the cst code, with very good agreement. The radiation pattern from the relativistic electron beam is found to be backward Cherenkov radiation, which is a promising tool for particle diagnostics. Calculations are also presented for the application of a MTM-based wakefield accelerator as a possible all-metal replacement for the conventional dielectric wakefield structure. The proposed structure may also be useful for MTM-based vacuum electron devices for microwave generation and amplification.},
doi = {10.1103/PhysRevSTAB.18.081303},
journal = {Physical Review Special Topics. Accelerators and Beams},
number = 8,
volume = 18,
place = {United States},
year = {Tue Aug 18 00:00:00 EDT 2015},
month = {Tue Aug 18 00:00:00 EDT 2015}
}
https://doi.org/10.1103/PhysRevSTAB.18.081303
Web of Science
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