Broadband Multichannel Radiometer for ECE Measurements on KSTAR
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概要
- 論文の詳細を見る
A broadband heterodyne radiometer system has been developed and installed on KSTAR to measure second harmonic electron cyclotron emission (ECE) at the magnetic field of 3 T. The system consisting of two radiometers (110-162 GHz and 164-196 GHz) can cover a frequency range of 110-196 GHz. The unique and key components to construct this ECE diagnostic instrument are specially-designed detector modules and a diplexer for splitting ECE radiation with high efficiency. The minimum detectable electron temperature with a time response of 1 µs is about 0.23 eV. The observed signal intensity is roughly consistent with the value estimated by using characteristics of various components (waveguide components, sub-harmonic mixers, amplifiers, and intermediate frequency detectors). In this article, design considerations and preliminary ECE measurements will be described.
- 社団法人 プラズマ・核融合学会の論文
著者
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KAWAHATA Kazuo
National Insitute for Fusion Science
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NAGAYAMA Yoshio
National Insitute for Fusion Science
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JEONG Seung
Korea Atomic Energy Research Institute, Daejeon, Korea
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TSUCHIYA Hayato
National Institute for Fusion Science, Toki 509-5292, Japan
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MASE Atsushi
KASTEC, Kyushu University, Kasuga 816-8580, Japan
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KOGI Yuichiro
Fukuoka Institute of Technology, Fukuoka 811-0295, Japan
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LEE Kyu-Dong
National Fusion Research Institute, Daejeon, Korea
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WYLDE Richard
Thomas Keating Ltd., Station Mills, Billinghurst, West Sussex RH114 9SH, UK
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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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TSUCHIYA Hayato
National Institute for Fusion Science
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