Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure
We present the first demonstration of high-power, reversed-Cherenkov wakefield radiation by electron bunches passing through a metamaterial structure. The structure supports a fundamental transverse magnetic mode with a negative group velocity leading to reversed-Cherenkov radiation, which was clear...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2019
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| Online Access: | http://hdl.handle.net/1721.1/119883 https://orcid.org/0000-0001-6336-3528 https://orcid.org/0000-0001-9813-0177 |
| _version_ | 1811089499370815488 |
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| author | Conde, Manoel Power, John G. Shao, Jiahang Wisniewski, Eric E. Jing, Chunguang Lu, Xueying Shapiro, Michael Mastovsky, Ivan Temkin, Richard J |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Conde, Manoel Power, John G. Shao, Jiahang Wisniewski, Eric E. Jing, Chunguang Lu, Xueying Shapiro, Michael Mastovsky, Ivan Temkin, Richard J |
| author_sort | Conde, Manoel |
| collection | MIT |
| description | We present the first demonstration of high-power, reversed-Cherenkov wakefield radiation by electron bunches passing through a metamaterial structure. The structure supports a fundamental transverse magnetic mode with a negative group velocity leading to reversed-Cherenkov radiation, which was clearly verified in the experiments. Single 45 nC electron bunches of 65 MeV traversing the structure generated up to 25 MW in 2 ns pulses at 11.4 GHz, in excellent agreement with theory. Two bunches of 85 nC with appropriate temporal spacing generated up to 80 MW by coherent wakefield superposition, the highest rf power that metamaterial structures ever experienced without damage. These results demonstrate the unique features of metamaterial structures that are very attractive for future high-gradient wakefield accelerators, including two-beam and collinear accelerators. Advantages include the high shunt impedance for high-power generation and high-gradient acceleration, the simple and rugged structure, and a large parameter space for optimization. |
| first_indexed | 2024-09-23T14:20:09Z |
| format | Article |
| id | mit-1721.1/119883 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:20:09Z |
| publishDate | 2019 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1198832022-09-29T08:48:06Z Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure Conde, Manoel Power, John G. Shao, Jiahang Wisniewski, Eric E. Jing, Chunguang Lu, Xueying Shapiro, Michael Mastovsky, Ivan Temkin, Richard J Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Plasma Science and Fusion Center Lu, Xueying Shapiro, Michael Mastovsky, Ivan Temkin, Richard J We present the first demonstration of high-power, reversed-Cherenkov wakefield radiation by electron bunches passing through a metamaterial structure. The structure supports a fundamental transverse magnetic mode with a negative group velocity leading to reversed-Cherenkov radiation, which was clearly verified in the experiments. Single 45 nC electron bunches of 65 MeV traversing the structure generated up to 25 MW in 2 ns pulses at 11.4 GHz, in excellent agreement with theory. Two bunches of 85 nC with appropriate temporal spacing generated up to 80 MW by coherent wakefield superposition, the highest rf power that metamaterial structures ever experienced without damage. These results demonstrate the unique features of metamaterial structures that are very attractive for future high-gradient wakefield accelerators, including two-beam and collinear accelerators. Advantages include the high shunt impedance for high-power generation and high-gradient acceleration, the simple and rugged structure, and a large parameter space for optimization. United States. Department of Energy (Grant DE-SC0015566) 2019-01-08T19:39:31Z 2019-01-08T19:39:31Z 2019-01 2018-08 2019-01-07T18:00:20Z Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/119883 Lu, Xueying et al. "Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure." Physical Review Letters 122, 1 (January 2019): 014801 © 2019 American Physical Society https://orcid.org/0000-0001-6336-3528 https://orcid.org/0000-0001-9813-0177 en http://dx.doi.org/10.1103/PhysRevLett.122.014801 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Conde, Manoel Power, John G. Shao, Jiahang Wisniewski, Eric E. Jing, Chunguang Lu, Xueying Shapiro, Michael Mastovsky, Ivan Temkin, Richard J Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure |
| title | Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure |
| title_full | Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure |
| title_fullStr | Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure |
| title_full_unstemmed | Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure |
| title_short | Generation of High-Power, Reversed-Cherenkov Wakefield Radiation in a Metamaterial Structure |
| title_sort | generation of high power reversed cherenkov wakefield radiation in a metamaterial structure |
| url | http://hdl.handle.net/1721.1/119883 https://orcid.org/0000-0001-6336-3528 https://orcid.org/0000-0001-9813-0177 |
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