Demonstration of a sub-terahertz band gyrotron that radiates Gaussian beams in a wide frequency range
Project/Area Number |
17K05725
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Plasma science
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Research Institution | University of Fukui |
Principal Investigator |
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Project Period (FY) |
2017-04-01 – 2020-03-31
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Project Status |
Completed (Fiscal Year 2019)
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Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
|
Keywords | マルチ周波数ジャイロトロン / 広周波数発振 / 2次高調波発振 / サブテラヘルツ / ガウスビーム出力 / 広周波数帯発振 / 2次高調波発振 / ジャイロトロン / ガウスビーム / 広周波数帯 |
Outline of Final Research Achievements |
A second harmonic multi-frequency Gaussian beam output gyrotron has been developed. Nine second harmonic modes that can be converted into a Gaussian beam with the same mode converter were selected. An oscillation test was performed and it was demonstrated that a Gaussian beam can be output in eight modes out of the nine and one more. Single mode oscillations of the second harmonics were obtained at four frequencies. In addition, ten fundamental wave modes were observed with the same gyrotron, and it was proved that the frequency could be continuously changed in five frequency bands.
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Academic Significance and Societal Importance of the Research Achievements |
広周波数帯でガウスビーム出力するジャイロトロンが実現可能であることを示した。これにより、周波数のファインチューニングが可能になるのと同時に、いろいろな試料に対して適用が可能になるため、分光分野をはじめとして、多くの分野での周波数依存を調べる学術研究にジャイロトロンを応用できるようになった。また、一般的に電磁波を用いた研究において、空間分解能は波の波長程度であるので、波長を小さくする、すなわち周波数を大きくすることで、空間分解能を改善できる。このため、サブテラヘルツ帯2次高調波発振の高周波数ジャイロトロン応用は、広い分野の学術研究の進展につながる。
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Report
(4 results)
Research Products
(40 results)
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[Journal Article] Development of Gyrotron FU CW GVII: a Second Harmonic, Multifrequency Gyrotron that Radiates Gaussian Beams2020
Author(s)
Yoshinori Tatematsu, Yuusuke Yamaguchi, Masafumi Fukunari, Kyoya Takayama, Yuto Maeda, Tatsuya Ueyama, Taisei Ogura, Kazuki Nakagawa, Ryota Kamiya, Shingo Ito, Ryotaro Okamoto, Teruo Saito
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Journal Title
Journal of Infrared, Millimeter, and Terahertz Waves
Volume: 41
Issue: 5
Pages: 576-589
DOI
Related Report
Peer Reviewed
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[Journal Article] An Experimental Investigation of a 0.8 THz Double-Beam Gyrotron2019
Author(s)
Seitaro Mitsudo, Mikhail Glyavin, Eduard Khutoryan, Ilya Bandurkin, Teruo Saito, Yuya Ishikawa, Vladimir Manuilov, Irina Zotova, Alexey Fedotov, Alexei Kuleshov, Svilen Sabchevski, Yoshinori Tatematsu, Vladislav Zaslavsky, Toshitaka Idehara
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Journal Title
Journal of Infrared, Millimeter, and Terahertz Waves
Volume: 40
Issue: 11-12
Pages: 1114-1128
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Development of a Second Harmonic Multi-Frequency Gaussian Beam Output Gyrotron FU CW GVII2019
Author(s)
Yoshinori Tatematsu, Kyoya Takayama, Yuto Maeda, Tatsuya Ueyama, Taisei Ogura, Kazuki Nakagawa, Ryota Kamiya, Masafumi Fukunari, Yuusuke Yamaguchi, and Teruo Saito
Organizer
44th International Conference on Infrared, Millimeter, and Terahertz Waves
Related Report
Int'l Joint Research / Invited
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[Presentation] Development of sub THz gyrotrons in wide frequency band in FIR UF2019
Author(s)
Y. Tatematsu, Y. Yamaguchi, M. Fukunari, K. Takayama, Y. Maeda, T. Ogura, T. Ueyama, K. Nakagawa, R. Kamiya, S. Sasano, Y. Wakabayashi and T. Saito
Organizer
The 7th International Workshop on Far-Infrared Technologies
Related Report
Int'l Joint Research / Invited
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[Presentation] Development of a Second Harmonic Multi-Frequency Gyrotron with Gaussian Beam Output, Gyrotron FU CW GVII2019
Author(s)
T. Ueyama, Y. Tatematsu, Y. Yamaguchi, K. Takayama, Y. Maeda, T. Ogura, K. Nakagawa, R. Kamiya, J. Sasano, Y. Wakabayashi, M. Fukunari, T. Saito
Organizer
The 7th International Workshop on Far-Infrared Technologies
Related Report
Int'l Joint Research
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[Presentation] 3rd International Conference Terahertz and Microwave Radiation: Generation, Detection and Applications2018
Author(s)
上山達也, 高山京也, 中川和輝, 前田悠斗, 小椋大聖, 神谷亮汰, 笹野準貴, 若林優次, 福成雅史, 山口裕資, 斉藤輝雄, 立松芳典
Organizer
プラズマ・核融合学会第35回年会
Related Report
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[Presentation] 二次高調波TE8,4/TE8,5モード複合共振器ジャイロトロンの発振特性評価2017
Author(s)
小椋大聖, 上山達也, 高山京也, 前田悠斗, 峠正範, 福成雅史, 山口裕資, 立松芳典, 斉藤輝雄
Organizer
2017年度日本物理学会北陸支部定例学術講演会
Related Report