Optics Design for Microwave Imaging Reflectometry in LHD
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概要
- 論文の詳細を見る
An optics system for microwave imaging reflectometry (MIR) in the Large Helical Device (LHD) was newly developed to optimize the performance of the two-dimensional microwave receiver array. Reflected microwaves from the plasma and the first local oscillator (LO) wave are transmitted to the receiver array via the optics from the front. Finite-difference time-domain (FDTD) calculation was used to design the ellipsoidal or hyperboloidal shapes of the quasi-optical mirrors. It is confirmed that the LO beam in the constructed system covers the receiver antenna aperture area as intended. The S/N ratios of the signals are improved with this optimized optics system from those in the previous system.
著者
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NAGAYAMA Yoshio
National Insitute for Fusion Science
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Tsuji-Iio Shunji
Tokyo Institute of Technology
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TSUCHIYA Hayato
National Institute for Fusion Science, Toki 509-5292, Japan
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KOGI Yuichiro
Fukuoka Institute of Technology, Fukuoka 811-0295, Japan
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MASE Atsushi
Kyushu University, Fukuoka 812-8581, Japan
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KUWAHARA Daisuke
Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro 152-8550, Japan
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YAMAGUCHI Soichiro
Kansai University, 3-3-35 Yamate, Suita 564-8680, Japan
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YOSHINAGA Tomokazu
National Institute for Fusion Science, 322-6 Oroshi, Toki 509-5292, Japan
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HOJO Hitoshi
University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8577, Japan
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TSUCHIYA Hayato
National Institute for Fusion Science, 322-6 Oroshi, Toki 509-5292, Japan
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KOGI Yuichiro
Fukuoka Institute of Technology, 3-30-1 Wajiro-Higashi, Fukuoka 811-0295, Japan
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KUWAHARA Daisuke
Tokyo Institute of Technology
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TSUCHIYA Hayato
National Institute for Fusion Science
関連論文
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