2003 Fiscal Year Final Research Report Summary
Development of a Millimeter-wave Imaging Reflectometer for Visualization of the Plasma Density Fluctuations.
| Project/Area Number |
13480130
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nuclear fusion studies
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| Research Institution | Tohoku University |
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Principal Investigator |
HATTORI Kunihiko Tohoku University, Graduate School of Engineering, Associate Researcher, 大学院・工学研究科, 助手 (90261578)
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| Co-Investigator(Kenkyū-buntansha) |
INUTAKE Masaaki Tohoku University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (90023738)
ANDO Akira Tohoku University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (90182998)
MIZUNO Koji Tohoku University, Research Institute of Electrical Communication, Professor, 電気通信研究所, 教授 (30005326)
MASE Atsushi Kyushu University, Art Science and Technology Center for Cooperative Research, Professor, 産学連携センター, 教授 (00023325)
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| Project Period (FY) |
2001 – 2003
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| Keywords | Reflectometer / Imaging / Fermi antenna / Plasma diagnostics / Density fluctuation / Millimeter-wave |
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| Research Abstract |
We have evaluated characteristics of a tapered slot antenna (TSA) in order to develop a microwave imaging reflectometer. The TSA is designed in X-band and Provided both a corrugated structure along the antenna edge and a Fermi-Dirac function type tapered slot structure, which improve radiation patterns of the TSA. We attained a 3dB-beamwidth of 32 degree in the E-plane and 37 degree in the H-plane at 12GHz. By optimizing the stripline dimensions according to the equivalent circuit model, the bandwidth of 8-18GHz with a VSWR less than 2 is obtained. Experiments of the reflectometer by using the TSA in the HITOP plasma are performed and a plasma rotation speed is measured by two channels of reflectometer with the TSA.
The Fermi antenna with a corrugated structure is a good candidate for an antenna array of an imaging reflectometer.
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