2017 Fiscal Year Final Research Report
Electron Cyclotron Emission Image Diagnostics based on Adaptive-array Analysis
Project/Area Number |
16K14529
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Nuclear fusion studies
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Research Institution | Kyushu University |
Principal Investigator |
Idei Hiroshi 九州大学, 応用力学研究所, 教授 (70260049)
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Project Period (FY) |
2016-04-01 – 2018-03-31
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Keywords | 電子サイクロトロン輻射 / アダプティブアレイ解析 / 位相配列アンテナ |
Outline of Final Research Achievements |
It is confirmed that propagating phases of non-coherent waves are properly analyzed in image diagnostics with adaptive-array technique. First the wave propagation was detected in snap-shot measurements, and then was done using a software-defined radio system with date streaming in high time resolution. The receiving lobe of the non-coherent wave could be analyzed with similar spatial resolution of the coherent-wave radiation lobe. Here a broadband thermal noise source was used as a non-coherent emission source. A Capon method remarkably reduces the receiving lobe area, compared to that with the normal beam-forming method. A looped antenna has been considered as a phased-array receiver to find the emitting position precisely. A number of the looped antennae could be prepared in the limited space, taking advantages for the precise position finding.
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Free Research Field |
プラズマ理工学、核融合学
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