Proposal of advanced fueling diagnostic in high temperature plasmas by millimeter wave scattering

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630423
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nuclear fusion studies
• Research Institution: The University of Tokyo
• Principal Investigator: NISHIURA Masaki 東京大学, 新領域創成科学研究科, 准教授 (60360616)
• Co-Investigator(Kenkyū-buntansha): KUBO Shin 核融合科学研究所, ヘリカル研究部, 教授 (80170025) ; TANAKA Kenji 核融合科学研究所, ヘリカル研究部, 准教授 (50260047) ; SHIMOZUMA Takashi 核融合科学研究所, ヘリカル研究部, 教授 (80270487)
• Co-Investigator(Renkei-kenkyūsha): SAITO Teruo 福井大学, 遠赤外領域開発研究センター, 教授 (80143163) ; TATEMATSU Yoshinori 福井大学, 遠赤外領域開発研究センター, 准教授 (50261756)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 協同トムソン散乱 / ミリ波 / スペクトル / イオンBernstein波 / プラズマ / 核融合 / イオン温度 / 分布関数

Outline of Final Research Achievements

For performance enhancement of self-burning fusion-plasmas, the fueling ratio ofions in DT nuclear fusion is essential. We proposed two methods for ion fueling ratio diagnostic by millimeter wave collective Thomson scattering; spectrum analysis and ion Bernstein wave detection.
In the first year, the frequency resolution is enhanced by a fast digitizer comibined with FFT analysis. In the second year, improvement of receiver antenna leads to succeed excited harmonic waves like an ion Bernstein wave.

Free Research Field

プラズマ物理，核融合