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2008 Fiscal Year Final Research Report

Development of multi-band microwave reflectometer system using an ultrashort pulse

Research Project

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Project/Area Number 18686075
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Nuclear fusion studies
Research InstitutionNational Institute for Fusion Science

Principal Investigator

TOKUZAWA Tokihiko  National Institute for Fusion Science, 大型ヘリカル研究部, 助教 (90311208)

Project Period (FY) 2006 – 2008
Keywordsプラズマ計測 / マイクロ波 / 反射法 / 超短パルス / 電子密度 / 磁場核融合 / LHD
Research Abstract

核融合炉を目指した高温プラズマ中の電子密度の空間分布や揺動を計測することを目的として、超短インパルスを光源としたパルスレーダー計測法の開発を行った。本手法はプラズマに入射した電磁波がその波長に対応した電子密度層において反射する現象を利用し、超短インパルスから広帯域な周波数の電磁波を抽出して、広範囲な密度層の計測を行うというものである。実験では、大型ヘリカル装置に適用し、密度分布計測に成功した。

  • Research Products

    (31 results)

All 2008 2007 2006 Other

All Journal Article (14 results) (of which Peer Reviewed: 13 results) Presentation (16 results) Remarks (1 results)

  • [Journal Article] Development of a Plasma Diagnostics System Using an Impulse Waveform Voltage2008

    • Author(s)
      T. Tokuzawa, K. Kawahata, Y. Ito, K. Tanaka, I. Yamada, and LHD Experimental Group
    • Journal Title

      Plasmaand Fusion Research (Vol.3)

      Pages: 018-1-8

  • [Journal Article] V-band Frequency Hopping Microwave Reflectometer in LHD2008

    • Author(s)
      T. Tokuzawa, A. Ejiri, K. Kawahata, K. Tanaka, Y. Ito
    • Journal Title

      Review of Scientific Instruments (vol.79)

      Pages: 10F109-1-4

    • Peer Reviewed
  • [Journal Article] Observation of Internal structure of energetic particle driven MHD modes in the Large Helical Device2008

    • Author(s)
      T. Tokuzawa, A. Ejiri, K. Kawahata, and LHD Experimental Group
    • Journal Title

      Plasma and Fusion Research (Vol.3)

      Pages: S1064-1-5

    • Peer Reviewed
  • [Journal Article] Simulation Study of Ultrashort-Pulse Reflectometry by Signal Record Analysis2008

    • Author(s)
      Y.Yokota, A.Mase, Y.Kogi, H.Hojo, L.Bruskin, T.Tokuzawa, and K.Kawahata
    • Journal Title

      Plasma and Fusion Research (Vol.3)

      Pages: 008-1-3

    • Peer Reviewed
  • [Journal Article] Core electron temperature rise due to Ar gas-puff in EC-heated LHD plasmas2008

    • Author(s)
      N. Tamura, S. Inagaki, K. Ida, K. Tanaka, C. Michael, T. Tokuzawaet al.
    • Journal Title

      Journal of Physics: Conference Series

      Pages: 012023-1-7

    • Peer Reviewed
  • [Journal Article] Development of Short-Wavelength Far-Infrared Lasers and Optical Elements for Plasma Diagnostics2007

    • Author(s)
      K. Nakayama, M. Tomimoto, S. Okajima, K. Kawahata, K. Tanaka, T. Tokuzawa, T. Akiyama
    • Journal Title

      Plasma and Fusion Research Vol.2

      Pages: S1114-1-S1114-4

    • Peer Reviewed
  • [Journal Article] Impact of Nonlocal Electron Heat Transport on the High Temperature Plasmas of LHD2007

    • Author(s)
      N.Tamura, S.Inagaki, K.Tanaka, C.Michael, T. Tokuzawaet al.
    • Journal Title

      time[s]Nuclear Fusion Vol.47

      Pages: 449-455

    • Peer Reviewed
  • [Journal Article] Multichannel ultrashort pulsed radar Reflectometer on LHD2006

    • Author(s)
      T. Tokuzawa, K. Kawahata, K. Tanaka, and LHD Experimental Group
    • Journal Title

      Review of Scientific Instruments (Vol.77,No.10)

      Pages: 10E903-1-3

    • Peer Reviewed
  • [Journal Article] Electron Density Profile Measurement Using Ka-band Microwave Impulse Radar Reflectometer on LHD2006

    • Author(s)
      T. Tokuzawa, K. Kawahata, K. Tanaka, and LHD Experimental Group
    • Journal Title

      Nuclear Fusion (Vol.46,No.9)

      Pages: S670-S676

    • Peer Reviewed
  • [Journal Article] Edge Density Profile Measurement by Using Ultrashort Pulsed Radar Reflectometer on LHD2006

    • Author(s)
      T. Tokuzawa, K. Kawahata, K. Tanaka, and LHD Experimental Group
    • Journal Title

      Journal of the Korean Physical Society (Vol.49)

      Pages: S155-S159

    • Peer Reviewed
  • [Journal Article] Abrupt Reduction of Core Electron Heat Transport in Response to Edge Cooling on the Large Helical Device2006

    • Author(s)
      S.Inagaki, N.Tamura, T.Tokuzawa, K.Ida et al.
    • Journal Title

      Plasma Physics and Controlled Fusion (Vol.48,No.5A)

      Pages: A251-A257

    • Peer Reviewed
  • [Journal Article] Observation of the Effect of Energetic Ions on Pellet Ablation in the Large Helical Device2006

    • Author(s)
      M. Hoshino, R. Sakamoto, H. Yamada, T. Tokuzawa et al.
    • Journal Title

      Plasma and Fusion Research (Vol.1)

      Pages: 033-1-8

    • Peer Reviewed
  • [Journal Article] Reconstruction of Edge Density Profiles Using Ultrashort-Pulse Reflectometry in LHD2006

    • Author(s)
      Y.Yokota, A.Mase, Y.Kogi, T. Tokuzawa, and K.Kawahata
    • Journal Title

      Journal of Plasma and Fusion Research (Vol.1)

      Pages: 040-1-2

    • Peer Reviewed
  • [Journal Article] Remote Experiment of Ultrashort Pulse Reflectometry for LHD Plasmas2006

    • Author(s)
      A.Mase, Y.Yokota, K.Uchida, Y.Kogi, N.Ito, T. Tokuzawa et al.
    • Journal Title

      Review of Scientific Instruments (Vol.77,No.10)

      Pages: 10E916-1-3

    • Peer Reviewed
  • [Presentation] Particle Transport Study around Expanding Magnetic Island in the Large Helical Device2008

    • Author(s)
      T. Tokuzawa, N. Tamura, R. Sakamoto, K. Tanaka, S. Inagaki, K. Kawahata, I. Yamada, and LHD Experimental Group
    • Organizer
      14th International Congress on Plasma Physics
    • Place of Presentation
      福岡
    • Year and Date
      20080908-12
  • [Presentation] LHD実験グループ、"マイクロ波を用いた密度揺動の空間構造計測"2008

    • Author(s)
      徳沢季彦、江尻晶、川端一男、西浦正樹、東井和夫、田中謙治
    • Organizer
      第7回核融合エネルギー連合講演会
    • Place of Presentation
      青森
    • Year and Date
      20080619-21
  • [Presentation] Particle Transport Characteristics around Expanding Static Magnetic Island in the Large Helical Device2008

    • Author(s)
      T. Tokuzawa, N. Tamura, R. Sakamoto, K. Tanaka, S. Inagaki, K. Kawahata, I. Yamada, and LHD Experimental Group
    • Organizer
      35th European Physical Society Conference on Plasma Physics
    • Place of Presentation
      ギリシャ・ヘロソニソス
    • Year and Date
      20080609-13
  • [Presentation] V-band Frequency Hopping Microwave Reflectometer in LHD2008

    • Author(s)
      T. Tokuzawa, A. Ejiri, K. Kawahata, K. Tanaka, Y. Ito, and LHD experimental Group
    • Organizer
      17th Topical Conference on High-Temperature Plasma Diagnostics
    • Place of Presentation
      米国・アルバカーキ
    • Year and Date
      20080511-15
  • [Presentation] Impulse Radar Reflectometer for LHD plasma electron density profile measurements2008

    • Author(s)
      T. Tokuzawa, K. Kawahata, and LHD experimental Group
    • Organizer
      2008 International Workshop on Microwave Devices, Systems, and their Applications
    • Place of Presentation
      九州大学
    • Year and Date
      20080324-25
  • [Presentation] Multi-channel Ultrashort Pulsed Radar Reflectometer for LHD edge plasma Measurement2008

    • Author(s)
      T. Tokuzawa, K. Kawahata, and LHD experimental Group
    • Organizer
      U.S.-Japan Workshop on Millimeter-Wave Plasma Diagnostics
    • Place of Presentation
      米国・ディビス
    • Year and Date
      20080225-27
  • [Presentation] LHD実験グループ、"インパルスを用いたプラズマ計測法の開発"2007

    • Author(s)
      徳沢季彦、川端一男、伊藤康彦、田中謙治、山田一博
    • Organizer
      第24回プラズマ・核融合学会年会
    • Place of Presentation
      姫路
    • Year and Date
      20071127-30
  • [Presentation] Terahertz reflectometer for high-dense plasma measurements2007

    • Author(s)
      T. Tokuzawa, K. Kawahata
    • Organizer
      International 13th International Symposium on Laser-Aided Plasma Diagnostics
    • Place of Presentation
      高山
    • Year and Date
      20070918-21
  • [Presentation] Recent Progress of Ultrashort Pulsed Radar Reflectometer for Density Profile Measurements on LHD2007

    • Author(s)
      T. Tokuzawa, K. Kawahata, Y. Yokota, A. Mase, H. Hojo, M. Hangyo, M. Tani, and LHD experimental Group
    • Organizer
      8th International Reflectometry Workshop for fusion plasma diagnosticsロシア・サンクトペテルスブルグ(IRW8)
    • Place of Presentation
      ロシア・サンクトペテルスブルグ
    • Year and Date
      20070502-04
  • [Presentation] LHD実験グループ、"プラズマ中に励起された波動の空間構造計測"2007

    • Author(s)
      徳沢季彦,江尻晶A
    • Organizer
      物理学会2007年春季大会
    • Place of Presentation
      鹿児島大学
    • Year and Date
      20070318-21
  • [Presentation] Microwave Reflectometer for Density Profile and Fluctuation Measurements on LHD2007

    • Author(s)
      T. Tokuzawa and LHD experimental Group
    • Organizer
      2nd CUP Workshop on"Improvement of Core Plasma Property"
    • Place of Presentation
      中国・合肥
    • Year and Date
      20070314-15
  • [Presentation] Current Status of Broadband Pulsed Radar Reflectometer System on LHD for Density Profile Measurements2006

    • Author(s)
      T. Tokuzawa, K. Kawahata, and LHD experimental Group
    • Organizer
      International Workshop on Microwave Devices, Systems, and their Applications 2006
    • Place of Presentation
      九州大学
    • Year and Date
      20061212-13
  • [Presentation] Utilization of Terahertz Imaging Technology to High-Temperature Plasma Diagnostics2006

    • Author(s)
      T. Tokuzawa, K. Kawahata, M. Hangyo, and M. Tani
    • Organizer
      16th International Toki Conference
    • Place of Presentation
      土岐
    • Year and Date
      20061205-08
  • [Presentation] THzイメージング技術のプラズマ計測への適用2006

    • Author(s)
      徳沢季彦、川端一男、萩行正憲、谷正彦
    • Organizer
      第23回プラズマ核融合学会
    • Place of Presentation
      筑波大学
    • Year and Date
      20061128-1201
  • [Presentation] インパルスを用いた核融合プラズマ電子密度計測2006

    • Author(s)
      徳沢季彦
    • Organizer
      地球惑星科学連合2006年大会
    • Place of Presentation
      幕張
    • Year and Date
      20060514-18
  • [Presentation] Multi-channel Ultrashort Pulsed Radar Reflectometer on LHD2006

    • Author(s)
      T. Tokuzawa, K. Kawahata, K. Tanaka, and LHD Experimental Group
    • Organizer
      16th Topical Conference on High-Temperature Plasma Diagnostics (HTPD2006)
    • Place of Presentation
      米国・ウィリアムスバーグ
    • Year and Date
      20060507-11
  • [Remarks]

    • URL

      http://htpp.lhd.nifs.ac.jp/

URL: 

Published: 2010-06-10   Modified: 2016-04-21  

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