Developments of impurity transport diagnostics and plasma control method with a tracer-encapsulated solid pellet

2013 Fiscal Year Final Research Report

• Project/Area Number: 23360415
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: National Institute for Fusion Science
• Principal Investigator: SUDO Shigeru 核融合科学研究所, ヘリカル研究部, 教授 (50142302)
• Co-Investigator(Kenkyū-buntansha): TAMURA Naoki 核融合科学研究所, ヘリカル研究部, 助教 ; OZAKI Tetsuo 核融合科学研究所, ヘリカル研究部, 准教授 (50183033) ; MUTO Sadatsugu 核融合科学研究所, ヘリカル研究部, 助教 (40260054) ; SUZUKI Chihiro 核融合科学研究所, ヘリカル研究部, 助教 (30321615)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Keywords: プラズマ・核融合 / 不純物輸送 / 計測ペレット

Research Abstract

With our original tracer-encapsulated solid pellet, the tracer can be deposited in a plasma, and the penetration depth can be adjusted according to the research purposes. We found the tracer particles stay a long time in the plasma in case of a high density plasma, while the impurity existing outside of the plasma cannot enter into the plasma core. Such a phenomenon does not occur in case of a lower density plasma. We analyzed the mechanism of such a process. Data of the radiation intensity from the impurity are also accumulated.

Research Products

• [Journal Article] Katsumi IDA "Plasma Diagnostics with Tracer-Encapsulated Solid Pellet" (2014)
  • Author(s): Shigeru SUDO, Naoki TAMURA, Sadatsugu MUTO, Tetsuo OZAKI, Chihiro SUZUKI1, Hisamichi FUNABA, Izumi MURAKAMI, Daiji KATO, Shigeru INAGAKI
  • Journal Title: J. Plasma Fusion Res Volume: 9 Pages: 1-11
  • DOI: 10.1585/pfr.9.1402039
• [Journal Article] Impurity transport study with TESPEL injection and simulation (2013)
  • Author(s): S. Sudo, N. Tamura, H. Funaba, S. Muto, C. Suzuki and I. Murakami
  • Journal Title: J. Plasma Fusion Res Volume: 8 Pages: 1-8
  • DOI: 10.1585/pfr.8.2402059
• [Journal Article] Transport characteristics of tracer and intrinsic impurities depending on the density of LHD plasmas (2013)
  • Author(s): S. Sudo, N. Tamura, S. Muto, H. Funaba, C. Suzuki, A. Murakami, I. Murakami, Y. Yoshimura and the LHD Experiment Group
  • Journal Title: Plasma Phys. Control. Fusion Volume: 55 Pages: 1-16
  • DOI: 10.1088/0741-3335/55/9/095014
• [Journal Article] Design for X-Ray Imaging Spectroscopy in Large Helical Device (2013)
  • Author(s): S. Muto and LHD Experimental Group
  • Journal Title: Plasma and Fusion Research Volume: 8 Pages: 1-4
  • DOI: 10.1585/pfr.8.2402140
• [Journal Article] Extreme ultraviolet spectra from highly charged gadolinium and neodymium ions in the Large Helical Device and laser produced plasmas (2013)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, N. Tamura, S. Sudo, C. O'Gorman, B. Li, C. S. Harte, T. Donnelly and G O'Sullivan
  • Journal Title: Phys. Scr Volume: T156 Pages: 1-3
  • DOI: 10.1088/0031-8949/2013/T156/014078
• [Journal Article] Multiple-tracer TESPEL injection for studying impurity behavior in a magnetically-confined plasma (2012)
  • Author(s): Shigeru Sudo, Naoki Tamura, Chihiro Suzuki, Sadatsugu Muto, Hisamichi Funaba and LHD Experiment Group
  • Journal Title: Nucl. Fusion Volume: 52 Pages: 1-15
  • DOI: 10.1088/0029-5515/52/6/063012
• [Journal Article] Tracer-encapsulated solid pellet injection system (2012)
  • Author(s): Shigeru Sudo and Naoki Tamura
  • Journal Title: Rev. Sci. Instrum Volume: 83 Pages: 6
  • DOI: 10.1063/1.3681447
• [Journal Article] Observation of EUV spectra from gadolinium and neodymium ions in the Large Helical Device (2012)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, N. Tamura, S. Sudo
  • Journal Title: J. Phys. B : At. Mol. Opt. Phys Volume: 45 Pages: 1-6
  • DOI: 10.1088/0953-4075/45/13/135002
• [Journal Article] Interpretation of spectral emission in the 20 nm region from tungsten ions observed in fusion device plasmas (2011)
  • Author(s): C. Suzuki, C. S. Harte, D. Kilbane, T. Kato, H. A. Sakaue, I. Murakami, D. Kato, K. Sato, N. Tamura, S. Sudo, M. Goto, R. D'Arcy, E. Sokell and G. O'Sullivan
  • Journal Title: J. Phys. B : At. Mol. Opt. Phys Volume: 44 Pages: 1-7
  • DOI: 10.1088/0953-4075/44/17/175004
• [Presentation] 3 種類のTESPEL 構造を用いた不純物輸送研究 (2014)
  • Author(s): 須藤滋, 共著者 : 田村直樹, 武藤貞嗣, 鈴木千尋, 舟場久芳
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 東海大学
  • Year and Date: 2014-03-27
• [Presentation] Development of Assembly of SOI Detector for Impurity Transport Study in LHD (2013)
  • Author(s): S. Muto, T. Miyoshi, N. Tamura, H. Nakanishi, Y. Itoh, K. Tsukada, T. Tsuru, Y. Ono, S. Sudo, Y. Arai, and LHD Experimental Group
  • Organizer: Nuclear Science Symposium
  • Place of Presentation: Seoul, Korea
  • Year and Date: 20131027-02
• [Presentation] LHD 実験グループ「トレーサー内蔵ペレットを用いたプラズマ計測」 (2013)
  • Author(s): 須藤滋, 共著者 : 田村直樹, 武藤貞嗣, 尾崎哲, 鈴木千尋, 舟場久芳, 村上泉, 加藤太治, 稲垣滋, 居田克巳
  • Organizer: プラズマ・核融合学会会第30回年会
  • Place of Presentation: 東京工業大学
  • Year and Date: 2013-12-05
• [Presentation] Observations of EUV Spectra from Highly Charged Heavy Ions in Optically Thin Plasmas for Benchmarking of Models (2013)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, N. Tamura, S. Sudo, T. Higashiguchi and G. O'Sullivan
  • Organizer: 2013 International Workshop on EUV and Soft X-Ray Sources
  • Place of Presentation: Dublin, Ireland
  • Year and Date: 2013-11-05
• [Presentation] EUV spectroscopy of highly charged high Z ions in the Large Helical Device plasmas (2013)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, N. Tamura, S. Sudo, H. A. Sakaue, N. Nakamura, S. Morita, M. Goto, D. Kato, T. Nakano, T. Higashiguchi, C. S. Harte and G. O'Sullivan
  • Organizer: 11th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas
  • Place of Presentation: Mons, Belgium
  • Year and Date: 2013-08-08
  • Invited
• [Presentation] TESPEL diagnostics for magnetically confined plasmas (2013)
  • Author(s): Sudo Shigeru
  • Organizer: The 12th Asia Pacific Physics Conference
  • Place of Presentation: Makuhari, Japan
  • Year and Date: 2013-07-12
• [Presentation] Application of photo-absorption for x-ray spectroscopy in LHD (2012)
  • Author(s): S. Muto and LHD Experimental Group
  • Organizer: International Toki Conference
  • Year and Date: 2012-11-22
• [Presentation] Interpretation of EUV spectra from tungsten ions observed in the Large Helical Device (2012)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, N. Tamura, S. Sudo, C. S. Harte and G. O'Sullivan
  • Organizer: 22nd International Toki Conference on Cross-Validation of Experiment and Modeling for Fusion and Astrophysical Plasmas
  • Place of Presentation: Toki, Japan
  • Year and Date: 2012-11-19
• [Presentation] EUV spectra from highly charged gadolinium and neodymium ions in LHD and laser produced plasmas (2012)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, N. Tamura, S. Sudo, C. O'Gorman, B. Li, C. S. Harte, T. Donnelly and G. O'Sullivan
  • Organizer: The 16th International Conference on the Physics of Highly Charged Ions
  • Place of Presentation: Heidelberg, Germany
  • Year and Date: 2012-09-06
• [Presentation] Observations of EUV spectra from tungsten and lanthanide ions in LHD (2012)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, T. Kato, M. Goto, T. Nakano, N. Tamura, S. Sudo, C. S. Harte and G. O'Sullivan
  • Organizer: The 4th China-Japan Joint Seminar on Atomic and Molecular Processes in Plasma
  • Place of Presentation: Lanzhou, China
  • Year and Date: 2012-08-02
• [Presentation] Impurity transport characteristics of the high density LHD plasmas (2012)
  • Author(s): S. Sudo, N. Tamura, S. Muto, H. Funaba, C. Suzuki, A. Murakami, I. Murakami and LHD Experiment Group
  • Organizer: 40th EPS Conference on Plasma Physics
  • Year and Date: 2012-07-04
• [Presentation] Interpretation of spectral emission in the 20 nm region from tungsten ions observed in fusion device plasmas (2011)
  • Author(s): C. Suzuki, C. S. Harte, D. Kilbane, T. Kato, H. A. Sakaue, I. Murakami, D. Kato, K. Sato, N. Tamura, S. Sudo, M. Goto, R. D'Arcy, E. Sokell and G. O'Sullivan
  • Organizer: The 17th International Conference on Atomic Processes in Plasmas
  • Place of Presentation: Belfast, UK
  • Year and Date: 2011-07-20