Development of Negative-Hydrogen-Ion Temperature Measurement with Optical Cavity

• Project/Area Number: 25800307
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Plasma science
• Research Institution: National Institute for Fusion Science
• Principal Investigator: NAKANO Haruhisa 核融合科学研究所, ヘリカル研究部, 助教 (90442524)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 水素負イオン温度 / 水素負イオン密度 / Cavity Ringdown Method / レーザー計測 / イオン源 / 中性粒子ビーム / 光脱離反応 / 水素負イオン / Cavity Ringdown

Outline of Final Research Achievements

Negative hydrogen ion has one more electron than hydrogen atom. Neutral beam injector which is one of the powerful heating devices for fusion reactor include a negative hydrogen ion source which generates negative hydrogen ion beam. To enhance the NBI performance, one of the important parts is improvement of the negative hydrogen ion source performance. Basic study contributed to it needs many physical values including negative hydrogen ion temperature. In this research, diagnostics of the negative hydrogen ion temperature by using an optical cavity was successfully developed by applying an existing negative hydrogen ion density measurement. As a result, a developed instrument can measure negative hydrogen ion density and temperature, simultaneously.

Research Products

• [Journal Article] Hydrogen Atom Temperature Measured with Wavelength-Modulated Laser Absorption Spectroscopy in Large Scale Filament Arc negative Hydrogen Ion Source (2015)
  • Author(s): H. Nakano, S. Nishiyama, M. Goto, K. Tsumori, M. Kisaki, K. Ikeda, K. Nag aoka, M. Osakabe, Y. Takeiri, O. Kaneko, K. Sasaki
  • Journal Title: AIP Conference Proceedings Volume: 1655 Pages: 020018-020018
  • DOI: 10.1063/1.4916427
  • Peer Reviewed / Open Access
• [Journal Article] H- Density Profile Parallel to Plasma Grid in H- Source for Neutral Beam (2013)
  • Author(s): Nakano, H., Tsumori, K., Kisaki, M., Shibuya, M., Ikeda, K., Nagaoka, K., Osakabe, M., Kaneko, O., Asano, E., Kondo, T., Sato, M., Sekiguchi, H., Komada, S., and Takeiri, Y.
  • Journal Title: Annual Report of National Institute for Fusion Science Volume: April 2012 - March 2013 Pages: 201-201
• [Presentation] 水素負イオン源の引出領域における温度と密度分布 (2015)
  • Author(s): 水素負イオン源の引出領域における温度と密度分布, *中野治久、津守克嘉, 池田勝則, 木崎雅志, S. Geng, 渋谷真之, 永岡賢一, 長壁正樹, 竹入康彦, 金子修
  • Organizer: 日本物理学会第70回年次大会
  • Place of Presentation: 東京都新宿区
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] Consideration of Negative Hydrogen Ion Temperature Measurement with Cavity Ringdown Method (2014)
  • Author(s): Haruhisa Nakano
  • Organizer: Plasma Conference 2014
  • Place of Presentation: Niigata, Japan
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] Measurement of Gas Temperature in Negative Hydrogen Ion Source by Wavelength-Modulated Laser Absorption Spectroscopy (2014)
  • Author(s): S. NISHIYAMA, K. SASAKI, H. NAKANO, M. GOTO, M. KISAKI, K. TSUMORI, NIFS-NBI TEAM
  • Organizer: 67th Annual Gaseous Electronics Conference
  • Place of Presentation: North Carolina, United State of America
  • Year and Date: 2014-11-02 – 2014-11-07
• [Presentation] Hydrogen Atom Temperature measured with Wavelength-Modulated Laser Absorption Spectroscopy in Lage Scale Filament Arc Negative Hydrogen Ion Source, The 4th International Symposium on Negative Ion Beams and Sources (2014)
  • Author(s): H. Nakano, S. Nishiyama, M. Goto, K. Tsumori, M. Kisaki, K. Ikeda, K. Nagaoka, M. Osakabe, Y. Takeiri, O. Kaneko and K. Sasaki
  • Organizer: The 4th International Symposium on Negative Ion Beams and Sources
  • Place of Presentation: Garching, Germany
  • Year and Date: 2014-10-06 – 2014-10-10
• [Presentation] H- Density Behavior for Positive and Negative Extraction and Bias Voltages (2013)
  • Author(s): Haruhisa Nakano, Katsuyoshi Tsumori, Masashi Kisaki, Masayuki Shibuya, Katsunori Ikeda, Kenichi Nagaoka, Masaki Osakabe, Osamu Kaneko, Eiji Asano, Tomoaki Kondo, Mamoru Sato, Haruro Sekiguchi, Seiji Komada, and Yasuhiko Takeiri
  • Organizer: The 15th International Conference of Ion Source
  • Place of Presentation: Makuhari Messe International Convention Complex, Chiba, Japan
• [Presentation] 波長変調レーザー吸収分光法による水素負イオ ン源内の水素原子温度計測 (2013)
  • Author(s): 中野治久, 西山修輔, 後藤基志, 津守克嘉, 木崎雅志, 池田勝則, 渋谷真之, 永岡賢一, 長壁正樹, 浅野英児, 近藤友紀, 佐藤守, 関口温朗, 竹入康彦, 金子修, 佐々木浩一
  • Organizer: プラズマ・核融合学会第３０回年会
  • Place of Presentation: 東京工業大学大岡山キャンパス、東京