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Novel Development in the Fusion Plasma Diagnostics Using a Near-infrared Spectroscopy

Research Project

Project/Area Number 16K05631
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Plasma science
Research InstitutionKyoto University

Principal Investigator

Kado Shinichiro  京都大学, エネルギー理工学研究所, 准教授 (10300732)

Research Collaborator Shikama Taiichi  
Sakamoto Mizuki  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords近赤外分光 / ヘリウム輝線強度比 / MAP-II / ヘリオトロンJ / ホットスポット / 黒体輻射 / 絶対感度較正 / ヘリオトロンJ / 安定抵抗 / ロングパスフィルタ / ダイバータ / 境界層プラズマ / パッシェン系列 / ヘリウム輝線 / リチウム分光 / 輝線強度比法 / 近赤外スペクトル / 衝突輻射モデル / ダイバータ模擬装置MAP-II / リチウム
Outline of Final Research Achievements

We have focused on near-infrared (NIR) spectroscopy, which had not been extensively exploited, to extend the target wavelength regime. We applied a simple and portable monitoring system to acquire the NIR spectra of Heliotron J plasmas in an attempt to survey the brightness of an unknown/unused line in the spectra, and a continuum spectra in NIR regime. Calibration of the visible(VIS) and NIR spectrometers were performed using the shorter and longer side of the tungsten halogen lamp and the second-order diffraction component of the VIS region was assessed. The He I Line intensity ratio method based on the CR model was extended to the NIR region. As a proof-of principle experiment, the electron density in the edge region was determined for H2-He plasma. Observed black-body radiation was identified to be due to the hot spot caused by super-thermal electrons due to electron cyclotron heating(ECH).

Academic Significance and Societal Importance of the Research Achievements

従来、可視分光や真空紫外分光が用いられてきた核融合プラズマの分光診断において、近赤外領域の適用可能性に着目し、その有用性を示した。近赤外領域には可視光の2次回折光が重畳される懸念があるため、定量的な検出には注意を要する。一方、近年、この領域の小型分光器や検出器のラインナップが充実してきているため、定量評価・較正の手法を確立することは、意義深い。
ホットスポットはプラズマ対向壁の溶損や不純物発生の原因となり得るため、その観測・制御が不可欠であり、多くの金属の融点を含む1400-3200Kの温度に感受性が高い近赤外分光は、今後イメージ計測や高速化へと発展するニーズが高まってくると期待される。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (19 results)

All 2019 2018 2017 2016

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results) Presentation (14 results) (of which Int'l Joint Research: 4 results,  Invited: 7 results) Book (1 results)

  • [Journal Article] Synergistic effect of nitrogen and hydrogen seeding gases on plasma detachment in the GAMMA 10/PDX tandem mirror2019

    • Author(s)
      Ezumi Naomichi、Iijima Takaaki、Sakamoto Mizuki、et al.
    • Journal Title

      Nuclear Fusion

      Volume: - Issue: 6 Pages: 066030-066030

    • DOI

      10.1088/1741-4326/ab1a4a

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Application of portable near-infrared spectrometer to Heliotron J plasma diagnostics2018

    • Author(s)
      Kado S.、Iwata A.、Kanazawa T.、Okada H.、Yamamoto S.、Motojima G.、Okazaki H.、Minami T.、Kobayashi S.、Nagasaki K.、Ohshima S.、Nakamura Y.、Ishizawa A.、Konoshima S.、Mizuuchi T.
    • Journal Title

      Review of Scientific Instruments

      Volume: 89 Issue: 10

    • DOI

      10.1063/1.5039320

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Measurement of the helium 23S metastable atom density by observation of the change in the 2^3S-2^3P emission line shape due to radiation reabsorption2016

    • Author(s)
      T. Shikama, S. Ogane, Y. Iida, and M. Hasuo
    • Journal Title

      J Phys. D: Appl. Phys. 49

      Volume: 49 Issue: 2 Pages: 025206-025206

    • DOI

      10.1088/0022-3727/49/2/025206

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] Development of a polarization-modulation spectroscopy system for the temporally resolved measurement of linear polarization in plasma emission2016

    • Author(s)
      K. Yasui, T. Shikama (C.A.), T. Higashi, and M. Hasuo
    • Journal Title

      Rev. Sci. Instrum.

      Volume: 87 Issue: 10 Pages: 103507-103507

    • DOI

      10.1063/1.4931804

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Presentation] Diagnostics to Investigate Thermal Equilibrium/Disequilibrium Features ~ in Fusion Edge And Laboratory Discharge Low-temperature Plasmas ~2018

    • Author(s)
      Shinichiro Kado
    • Organizer
      2nd Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 近赤外簡易分光システムによるヘリオトロンJプラズマ対向壁からの連続スペクトルの観測2018

    • Author(s)
      岩田晃拓,門信一郎,岡田浩之,山本聡,本島厳,四竈泰一,南貴司,小林進二,長﨑百伸,大島慎介,中村裕司,石澤明宏,木島滋,水内亨
    • Organizer
      第12回核融合エネルギー連合講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 近赤外原子発光線の高波長分解分光によるリサイクリング束局所計測2018

    • Author(s)
      四竈泰一,門信一郎,岡田浩之,山本聡,松岡雷士,水内亨,南貴司,小林進二,長﨑百伸,大島慎介,中村祐司,石澤明宏,木島滋,蓮尾昌裕
    • Organizer
      第12回核融合エネルギー連合講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] プラズマ計測 ~プローブおよび分光診断と基礎物理(改訂版)~2018

    • Author(s)
      門信一郎
    • Organizer
      第57回プラズマ若手夏の学校
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Application of He I Line Intensity Ratio Method to Lyot-Filter Based Imaging Spectrometry on MAP-II Divertor Simulator,2018

    • Author(s)
      Shinichiro Kado
    • Organizer
      the 12th International Conference on Open Magnetic Systems for Plasma Confinement (OS2018), Tsukuba, Japan, 2018.8.27-31.
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ヘリオトロンJにおける可視・近赤外簡易分光システムの相互感度較正2018

    • Author(s)
      岩田晃拓, 門信一郎, 金沢友美, 岡田浩之, 山本A, 本島厳, 岡崎悠, 南貴司, 小林進二, 長崎百伸, 大島慎介, 中村祐司, 石澤明宏, 木島滋, 木島滋, 水内亨
    • Organizer
      日本物理学会第73回年次大会, 東京理科大学(野田キャンパス)
    • Related Report
      2017 Research-status Report
  • [Presentation] 中学高校理科教科書における真空放電の位置づけと演示実験2017

    • Author(s)
      門 信一郎
    • Organizer
      第64回応用物理学会春季学術講演会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2017-03-14
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Application of Near-Infrared Spectroscopy to Heliotron J Plasma2017

    • Author(s)
      S. Kado, A. Iwata, T. Kanazawa, H. Okada, S. Yamamoto, T. Minami, S. Kobayashi, K. Nagasaki, S. Ohshima, Y. Nakamura, A. Ishizawa, S. Konoshima, T. Mizuuchi
    • Organizer
      Plasma Conference2017 (PLASMA 2017), 姫路商工会議所
    • Related Report
      2017 Research-status Report
  • [Presentation] Evaluation of applicability of atomic helium line intensity ratio method to electron temperature and density measurement in Heliotron J2017

    • Author(s)
      T. Kanazawa, S. Kado, H. Kawazome, H. Okada, S. Yamamoto, T. Minami, S. Kobayashi, K. Nagasaki, S. Ohshima, Y. Nakamura, A. Ishizawa, S. Konoshima, X. Lu, H. Okazaki, K. Yamamoto, S. Tanohira, S. Watanabe, N. Haji, Y. Yonemura, T. Mizuuchi
    • Organizer
      Plasma Conference2017 (PLASMA 2017), 姫路商工会議所
    • Related Report
      2017 Research-status Report
  • [Presentation] ダイバータ模擬装置MAP-IIの筑波大への移設再稼働の現状および研究計画2016

    • Author(s)
      門 信一郎
    • Organizer
      第33回プラズマ・核融合学会年会
    • Place of Presentation
      東北大学青葉山キャンパス
    • Year and Date
      2016-11-29
    • Related Report
      2016 Research-status Report
  • [Presentation] プラズマ計測 ~プローブおよび分光診断と基礎物理~2016

    • Author(s)
      門 信一郎
    • Organizer
      第55回プラズマ若手夏の学校 第30回核融合炉夏期セミナー
    • Place of Presentation
      サンシャイン白子
    • Year and Date
      2016-08-30
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Visible Spectroscopy (Invited Lecture)2016

    • Author(s)
      Shinichiro Kado
    • Organizer
      The 8th Korea-Japan Seminar on Advanced Diagnostics for Steady-State Fusion Plasma
    • Place of Presentation
      Busan, Korea
    • Year and Date
      2016-08-24
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Spectroscopy2016

    • Author(s)
      T. Shikama
    • Organizer
      4th A3 foresight summer school and workshop on spherical torus
    • Place of Presentation
      Chikushi Campus, Kyushu University
    • Year and Date
      2016-08-02
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] QUESTスクレイプオフ層における原子局所計測に向けた近赤外干渉分光器の開発2016

    • Author(s)
      四竈 泰一
    • Organizer
      RIAMフォーラム
    • Place of Presentation
      九州大学筑紫キャンパス
    • Year and Date
      2016-06-02
    • Related Report
      2016 Research-status Report
    • Invited
  • [Book] 第55回プラズマ若手夏の学校 第30回核融合炉夏期セミナーテキスト「プラズマ計測 ~プローブおよび分光診断と基礎物理~ 」2016

    • Author(s)
      門 信一郎
    • Total Pages
      20
    • Publisher
      プラズマ・核融合学会
    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

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