An overmoded 140 GHz, 1 kW quasioptical gyro-TWT with an internal mode converter
The design and experimental study of a 140 GHz, 1 kW gyro-traveling wave tube (Gyro-TWT) operating in the HE[subscript 06] mode of a confocal waveguide is presented. A combination of quasioptical gain sections with dielectric loaded severs enables high gain operation with mode selectivity. A nanose...
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| Format: | Article |
| Language: | en_US |
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Institute of Electrical and Electronics Engineers
2010
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| Online Access: | http://hdl.handle.net/1721.1/59457 https://orcid.org/0000-0003-1589-832X https://orcid.org/0000-0002-1148-9345 https://orcid.org/0000-0001-9813-0177 |
| _version_ | 1826199173085528064 |
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| author | Kim, Hae Jin Joye, Colin D. Shapiro, Michael Sirigiri, Jagadishwar R. Woskov, Paul P. Maly, Thorsten Griffin, Robert Guy Temkin, Richard J |
| author2 | Massachusetts Institute of Technology. Plasma Science and Fusion Center |
| author_facet | Massachusetts Institute of Technology. Plasma Science and Fusion Center Kim, Hae Jin Joye, Colin D. Shapiro, Michael Sirigiri, Jagadishwar R. Woskov, Paul P. Maly, Thorsten Griffin, Robert Guy Temkin, Richard J |
| author_sort | Kim, Hae Jin |
| collection | MIT |
| description | The design and experimental study of a 140 GHz, 1 kW gyro-traveling wave tube (Gyro-TWT) operating in the HE[subscript 06] mode of a confocal waveguide is presented. A combination of quasioptical gain sections with dielectric loaded severs enables high gain operation with mode selectivity. A nanosecond-scale 120 mW pulse driver at 140 GHz was demonstrated. This input driver pulse will be amplified by the Gyro-TWT and the resulting output high-power short pulse will be transmitted to an EPR spectrometer probe. A quasioptical mode converter utilized to transform the higher order operating confocal mode into a Gaussian-like beam was designed and cold tested. The simulated and measured Gaussian beam patterns of the output mode converter are in good agreement. |
| first_indexed | 2024-09-23T11:15:52Z |
| format | Article |
| id | mit-1721.1/59457 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:15:52Z |
| publishDate | 2010 |
| publisher | Institute of Electrical and Electronics Engineers |
| record_format | dspace |
| spelling | mit-1721.1/594572022-10-01T02:24:58Z An overmoded 140 GHz, 1 kW quasioptical gyro-TWT with an internal mode converter Kim, Hae Jin Joye, Colin D. Shapiro, Michael Sirigiri, Jagadishwar R. Woskov, Paul P. Maly, Thorsten Griffin, Robert Guy Temkin, Richard J Massachusetts Institute of Technology. Plasma Science and Fusion Center Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology) Temkin, Richard J. Kim, Hae Jin Joye, Colin D. Shapiro, Michael Sirigiri, Jagadishwar R. Temkin, Richard J. Woskov, Paul P. Maly, Thorsten Griffin, Robert Guy The design and experimental study of a 140 GHz, 1 kW gyro-traveling wave tube (Gyro-TWT) operating in the HE[subscript 06] mode of a confocal waveguide is presented. A combination of quasioptical gain sections with dielectric loaded severs enables high gain operation with mode selectivity. A nanosecond-scale 120 mW pulse driver at 140 GHz was demonstrated. This input driver pulse will be amplified by the Gyro-TWT and the resulting output high-power short pulse will be transmitted to an EPR spectrometer probe. A quasioptical mode converter utilized to transform the higher order operating confocal mode into a Gaussian-like beam was designed and cold tested. The simulated and measured Gaussian beam patterns of the output mode converter are in good agreement. National Institute of Biomedical Imaging and Bioengineering (U.S.) (Contract EB001965) National Institutes of Health (U.S.) 2010-10-21T20:57:29Z 2010-10-21T20:57:29Z 2009-11 2009-09 Article http://purl.org/eprint/type/JournalArticle 978-1-4244-5416-7 INSPEC Accession Number: 10976655 http://hdl.handle.net/1721.1/59457 Haejin Kim et al. “An overmoded 140 GHz, 1 kW quasioptical gyro-twt with an internal mode converter.” Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on. 2009. 1-2. ©2009 Institute of Electrical and Electronics Engineers https://orcid.org/0000-0003-1589-832X https://orcid.org/0000-0002-1148-9345 https://orcid.org/0000-0001-9813-0177 en_US http://dx.doi.org/10.1109/ICIMW.2009.5325762 34th International Conference on Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009 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. application/pdf Institute of Electrical and Electronics Engineers IEEE |
| spellingShingle | Kim, Hae Jin Joye, Colin D. Shapiro, Michael Sirigiri, Jagadishwar R. Woskov, Paul P. Maly, Thorsten Griffin, Robert Guy Temkin, Richard J An overmoded 140 GHz, 1 kW quasioptical gyro-TWT with an internal mode converter |
| title | An overmoded 140 GHz, 1 kW quasioptical gyro-TWT with an internal mode converter |
| title_full | An overmoded 140 GHz, 1 kW quasioptical gyro-TWT with an internal mode converter |
| title_fullStr | An overmoded 140 GHz, 1 kW quasioptical gyro-TWT with an internal mode converter |
| title_full_unstemmed | An overmoded 140 GHz, 1 kW quasioptical gyro-TWT with an internal mode converter |
| title_short | An overmoded 140 GHz, 1 kW quasioptical gyro-TWT with an internal mode converter |
| title_sort | overmoded 140 ghz 1 kw quasioptical gyro twt with an internal mode converter |
| url | http://hdl.handle.net/1721.1/59457 https://orcid.org/0000-0003-1589-832X https://orcid.org/0000-0002-1148-9345 https://orcid.org/0000-0001-9813-0177 |
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