Development of Helium Beam Emission Spectroscopy System in Linear Magnetized Plasma PANTA

• Project/Area Number: 26887047
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Plasma science
• Research Institution: National Institute for Fusion Science
• Principal Investigator: Kobayashi Tatsuya 核融合科学研究所, ヘリカル研究部, 助教 (30733703)
• Project Period (FY): 2014-08-29 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: ビーム放射分光 / プラズマ熱輸送 / プラズマ乱流 / 非局所輸送 / ビーム発光分光 / プラズマ分光計測

Outline of Final Research Achievements

The purpose of this project is to clarify the physical mechanism of the nonlinearity and nonlocality of the heat pulse propagation in magnetically confined plasmas. Here, we performed (1) development of the helium beam emission spectroscopy system in a linear magnetized plasma and (2) data analysis of the heat pulse propagation experiment in large fusion devices. Within the project, we achieved (1) setup of the helium supersonic molecular beam injection system for the helium beam emission spectroscopy system, (2) exemplifying of the nonlinearity and nonlocality of the heat pulse propagation and (3) proposing of an analysis method for reconstructing the data of the Thomson scattering system with a high time resolution.

Research Products

• [Journal Article] Reconstruction of high temporal resolution Thomson scattering data during a modulated electron cyclotron resonance heating using conditional averaging (2016)
  • Author(s): T. Kobayashi, K. Ida, K. Itoh, M. Yoshinuma, C. Moon, S. Inagaki, I. Yamada, H. Funaba, R. Yasuhara, H. Tsuchiya, S. Ohdachi, Y. Yoshimura, H. Igami, T. Shimozuma, S. Kubo and T. I. Tsujimura
  • Journal Title: Review of Scientific Instruments Volume: 87
  • NAID: 120007176990
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Azimuthal inhomogeneity of turbulence structure and its impact on intermittent particle transport in linear magnetized plasmas (2015)
  • Author(s): T. Kobayashi, S. Inagaki, M. Sasaki, Y. Kosuga, H. Arakawa, T. Yamada, Y. Nagashima, Y. Miwa, N. Kasuya, A. Fujisawa, S.-I. Itoh, K. Itoh
  • Journal Title: Phys. Plasmas Volume: 22 Issue: 11 Pages: 1123011-8
  • DOI: 10.1063/1.4934537
  • NAID: 120007176995
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Edge plasma dynamics during L-H transition in the JFT-2M tokamak (2015)
  • Author(s): T. Kobayashi, K. Itoh, T.Ido, K. Kamiya, S.-I. Itoh, Y. Miura, Y. Nagashima, A. Fujisawa, S. Inagaki, K. Ida, and K. Hoshino
  • Journal Title: Nuclear Fusion Volume: 55 Issue: 6 Pages: 063009-063009
  • DOI: 10.1088/0029-5515/55/6/063009
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Dynamics of edge limit cycle oscillation in JFT-2M tokamak (2014)
  • Author(s): T. Kobayashi, K. Itoh, et al.
  • Journal Title: Nucl. Fusion Volume: 54 Issue: 7 Pages: 073017-073017
  • DOI: 10.1088/0029-5515/54/7/073017
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Method for estimating the propagation direction of a coherent plasma structure using a one-dimensional diagnostic array (2014)
  • Author(s): T. Kobayashi, G. Birkenmeier, E. Wolfrum, F. M. Laggner, M. Willensdorfer, U. Stroth, S. Inagaki, S.-I. Itoh, and K. Itoh
  • Journal Title: Review of Scientific Instruments Volume: 85 Issue: 8 Pages: 083507-083507
  • DOI: 10.1063/1.4893482
  • Peer Reviewed
• [Presentation] JFT-2Mトカマクにおけるリミットサイクル揺動の物理機構 (2016)
  • Author(s): 小林達哉，伊藤公孝，井戸毅，神谷健作，伊藤早苗，三浦幸俊，永島芳彦，藤澤彰英，稲垣滋，居田克巳，星野克道
  • Organizer: 第71回日本物理学会年次大会
  • Place of Presentation: 東北学院大学
  • Year and Date: 2016-03-19
• [Presentation] Heat pulse propagation experiments with a two-dimensional electron cyclotron emission diagnostic in KSTAR (2016)
  • Author(s): T. Kobayashi, K. Ida, G. H. Choe, G. S. Yun, H. K. Park, W. H. Ko, S. Inagaki, C. Moon, S.-I. Itoh and K. Itoh
  • Organizer: KSTAR conference 2016
  • Place of Presentation: Daejeon, Korea
  • Year and Date: 2016-02-24
  • Int'l Joint Research / Invited
• [Presentation] JFT-2MにおけるHモード遷移リミットサイクル時の電場，勾配，乱流の時空間発展 (2015)
  • Author(s): 小林達哉
  • Organizer: 第32回プラズマ・核融合学会年大
  • Place of Presentation: 名古屋大学
  • Year and Date: 2015-11-24
  • Invited
• [Presentation] LHDにおける内部輸送障壁形成時の電子温度勾配及び熱輸送の解析 (2015)
  • Author(s): 小林達哉, 居田克巳, 伊藤公孝, 吉沼幹朗, 文贊鎬, 山田一博, 舟場久芳, 安原亮, 土屋隼人, 吉村泰夫, 伊神弘恵,下妻隆, 久保伸, 辻村亨, 稲垣滋, 伊藤早苗,LHD実験グループ
  • Organizer: 日本物理学会2015秋季大会
  • Place of Presentation: 関西大学
  • Year and Date: 2015-09-16
• [Presentation] Radial electric field bifurcation mechanisms during L-H transition in the JFT-2M tokamak (2015)
  • Author(s): T. Kobayashi, K. Itoh, T. Ido, K. Kamiya, S.-I. Itoh, Y. Miura, Y. Nagashima, A. Fujisawa, S. Inagaki, K. Ida, and K. Hoshino
  • Organizer: The 5th Asia-Pacific Transport Working Group International Conference (APTWG 2015)
  • Place of Presentation: Dalian, China
  • Year and Date: 2015-06-09
  • Int'l Joint Research / Invited
• [Presentation] LHD におけるビーム放射分光法を用いた 密度乱流揺動の計測 (2015)
  • Author(s): 小林達哉,吉沼幹朗,中野治久,大野誠,文贊鎬,居田克巳
  • Organizer: 第70回日本物理学会
  • Place of Presentation: 早稲田大学早稲田キャンパス
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] LHDにおける内部輸送障壁形成のダイナミクス (2014)
  • Author(s): 小林達哉, 居田克巳，伊藤公孝，土屋隼人，徳沢季彦，吉沼幹朗，文贊鎬，山田弘司，田中謙治，下妻隆，久保伸，伊井亨，稲垣滋，伊藤早苗
  • Organizer: Plasma conference 2014
  • Place of Presentation: 朱鷺メッセ, 新潟
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] Internal transport barrier formation with modulation heating power input in LHD (2014)
  • Author(s): T. Kobayashi, K. Ida, K. Itoh, H. Tsuchiya, T. Tokuzawa, M. Yoshinuma, C. Moon, H. Yamada, K. Tanaka, T. Shimozuma, S. Kubo, T. Ii, S. Inagaki, S.-I. Itoh and LHD Experiment Group
  • Organizer: 24th International Toki Conference
  • Place of Presentation: Gifu, Japan
  • Year and Date: 2014-11-04 – 2014-11-07
• [Presentation] Edge plasma dynamics during L-H transition in the JFT-2M tokamak (2014)
  • Author(s): T. Kobayashi, K. Itoh, T. Ido, K. Kamiya, S.-I. Itoh, Y. Miura, Y. Nagashima, A. Fujisawa, S. Inagaki, K. Ida, and K. Hoshino
  • Organizer: IAEA Fusion Energy Conference 2014
  • Place of Presentation: St Petersburg, Russian Federation
  • Year and Date: 2014-10-13 – 2014-10-18
• [Presentation] Dynamical response of turbulence during limit-cycle oscillation in JFT-2M Tokamak (2014)
  • Author(s): T. Kobayashi, K. Itoh, T. Ido, K. Kamiya, S.-I. Itoh, Y. Miura, Y. Nagashima, A. Fujisawa, S. Inagaki, K. Ida, and K. Hoshino
  • Organizer: 19th Joint EU-US Transport Task Force Meeting
  • Place of Presentation: Culham, Britain, September
  • Year and Date: 2014-09-08 – 2014-09-11
  • Invited