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Title: Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam

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 » for the conventional dielectric wakefield structure. The proposed structure may also be useful for MTM-based vacuum electron devices for microwave generation and amplification.« less
Authors:
 [1] ;  [1] ;  [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
Publication Date:
Grant/Contract Number:
SC0010075; FA 550-12-1-0489
Type:
Published Article
Journal Name:
Physical Review Special Topics. Accelerators and Beams
Additional Journal Information:
Journal Volume: 18; Journal Issue: 8; Journal ID: ISSN 1098-4402
Publisher:
American Physical Society (APS)
Research Org:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); US Air Force Office of Scientific Research (AFOSR)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE
OSTI Identifier:
1212118
Alternate Identifier(s):
OSTI ID: 1454578

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., 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. doi:10.1103/PhysRevSTAB.18.081303.
Lu, Xueying, Shapiro, Michael A., and Temkin, Richard J.. 2015. "Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam". United States. doi: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 = {2015},
month = {8}
}

Works referenced in this record:

Negative Refraction Makes a Perfect Lens
journal, October 2000