2014 Fiscal Year Final Research Report
Mode-Content Analysis of a High Power Millimeter-Wave Propagating in a Corrugated Waveguide Using Millimeter-Wave Beam Profile and Position Monitors
| Project/Area Number |
24560066
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Applied physics, general
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| Research Institution | National Institute for Fusion Science |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
KUBO Shin 核融合科学研究所, ヘリカル研究部, 教授 (80170025)
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| Research Collaborator |
OHKUBO Kunizo (00023739)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | ジャイロトロン / コルゲート導波管 / 大電力ミリ波 / モード分析 / マイターベンド / ペルチェ素子 / 核融合 |
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| Outline of Final Research Achievements |
In order to reduce the transmission loss of the micro- and millimeter-wave power in the long-distance transmission line, we developed a real-time profile and position monitor of Mega-Watt millimeter-waves in evacuated corrugated waveguides, and demonstrated a possibility of measuring the power profile of Mega-Watt level millimeter-waves for real-time. The system can be controlled and the profile data also can be acquired remotely. The measured profile data using Mega-Watt and sub-second pulse power from a 154GHz gyrotron well agreed with the burn-pattern obtained using thermal-paper in the short pulse (several milli-seconds) gyrotron operation. Additionally, the power linearity of the analyzed monitor signal was also confirmed in the several power levels. The analyzing method of the included mode contents is also proposed.
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| Free Research Field |
プラズマ理工学、核融合学
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