Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam
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...
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| Format: | Article |
| Language: | English |
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American Physical Society
2015
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| Online Access: | http://hdl.handle.net/1721.1/98096 https://orcid.org/0000-0001-9813-0177 https://orcid.org/0000-0001-6336-3528 |
| _version_ | 1826192364873449472 |
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| author | Lu, Xueying Temkin, Richard J. Shapiro, Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Lu, Xueying Temkin, Richard J. Shapiro, Michael |
| author_sort | Lu, Xueying |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T09:10:52Z |
| format | Article |
| id | mit-1721.1/98096 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:10:52Z |
| publishDate | 2015 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/980962022-09-26T10:56:42Z Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam Lu, Xueying Temkin, Richard J. Shapiro, Michael Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Plasma Science and Fusion Center Lu, Xueying Shapiro, Michael Temkin, Richard J. 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. United States. Dept. of Energy. Office of High Energy Physics (Award DE-SC0010075) United States. Air Force Office of Scientific Research. Multidisciplinary University Research Initiative (Grant FA 550-12-1-0489) 2015-08-19T12:15:04Z 2015-08-19T12:15:04Z 2015-08 2015-05 2015-08-18T22:00:07Z Article http://purl.org/eprint/type/JournalArticle 1098-4402 http://hdl.handle.net/1721.1/98096 Lu, Xueying, Michael A. Shapiro, and Richard J. Temkin. "Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam." Phys. Rev. ST Accel. Beams 18, 081303 (August 2015). https://orcid.org/0000-0001-9813-0177 https://orcid.org/0000-0001-6336-3528 en http://dx.doi.org/10.1103/PhysRevSTAB.18.081303 Physical Review Special Topics - Accelerators and Beams Creative Commons Attribution http://creativecommons.org/licenses/by/3.0 authors application/pdf American Physical Society American Physical Society |
| spellingShingle | Lu, Xueying Temkin, Richard J. Shapiro, Michael Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam |
| title | Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam |
| title_full | Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam |
| title_fullStr | Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam |
| title_full_unstemmed | Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam |
| title_short | Modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam |
| title_sort | modeling of the interaction of a volumetric metallic metamaterial structure with a relativistic electron beam |
| url | http://hdl.handle.net/1721.1/98096 https://orcid.org/0000-0001-9813-0177 https://orcid.org/0000-0001-6336-3528 |
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