Control of Rotational Transform by Using Non-inductive Current

2011 Fiscal Year Final Research Report

• Project/Area Number: 21560857
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: Kyoto University
• Principal Investigator: NAGASAKI Kazunobu 京都大学, エネルギー理工学研究所, 教授 (20237506)
• Co-Investigator(Renkei-kenkyūsha): KOBAYASHI Shinji 京都大学, エネルギー理工学研究所, 助教 (70346055) ; YAMAMOTO Satoshi 京都大学, エネルギー理工学研究所, 助教 (70397529) ; MOTOJIMA Gen 核融合科学研究所, 助教 (00509507)
• Project Period (FY): 2009 – 2011
• Keywords: 電子サイクロトロン電流駆動 / Heliotron J / 捕捉粒子 / 磁気シア / GAE

Research Abstract

Second harmonic 70GH_z X-mode Electron cyclotron current drive experiment has been made in Heliotron J by using a newly developed lauching system. The Experimnental results show that the EC driven current strongly depends on the magnetic field structure, and the results quantitatively agree with a theoretical result including parallel momentum convervatio, indicating that trapped particles have an important role on determining the ECCD. An Global Alfven Eigenmode(GAE) has successfully suppressed by ECCD in an NBI plasma. The mode intensity is quickly reduced when the magnetic shear reaches a certain value, resulting that there is a threshold magnetic shear for the mode stabilization.

Research Products

• [Journal Article] Dependence of EC-Driven Current on the EC-Wave Beam Direction in LHD (2011)
  • Author(s): Y. Yoshimura, S. Kubo, T. Shimozuma, H. Igami, H. Takahashi, M. Nishiura, S. Sakakibara, K. Tanaka, K. Narihira, T. Mutoh, H. Yamada, K. Nagasaki, et al.
  • Journal Title: Plasma Fus. Res Volume: 6 Pages: 2402073
  • URL: http://www.jspf.or.jp/PFR/PDF/pfr2011_06-2402073.pdf
  • Peer Reviewed
• [Journal Article] Influence of trapped electrons on ECCD in Heliotron J (2011)
  • Author(s): K. Nagasaki, S. Yamamoto, H. Yoshino, K. Sakamoto, N. B. Marushchenko, Y. Turkin, T. Mizuuchi, H. Okada, K. Hanatani, T. Minami, K. Masuda, S. Kobayashi, et al.
  • Journal Title: Nucl. Fusion Volume: 51 Pages: 103035
  • DOI: DOI:10.1088/0029-5515/51/10/103035
  • Peer Reviewed
• [Journal Article] Physics of Heliotron J Confinement (2010)
  • Author(s): F. Sano, T. Mizuuchi, K. Nagasaki, et al.
  • Journal Title: Plasma Fus. Res Volume: 5 Pages: S2003
  • URL: http://www.jspf.or.jp/PFR/PDF/pfr2010_05-S2003.pdf
  • Peer Reviewed
• [Journal Article] Progress Toward Steady-State Operation in LHD Using Electron Cyclotron Waves (2010)
  • Author(s): Y. Yoshimura, S. Kubo, T. Shimozuma, H. Igami, H. Takahashi, S. Kobayashi, S. Ito, Y. Mizuno, Y. Takita, Y. Nakamura, K. Ohkubo, R. Ikeda, K. Ida, M. Yoshinuma, S. Sakakibara, T. Mutoh, K. Nagasaki, et al.
  • Journal Title: Fus. Sci. and Technol Volume: 58 Pages: 551-559
  • URL: http://www.new.ans.org/pubs/journals/fst/a_10842
  • Peer Reviewed
• [Journal Article] Research of Electron Cyclotron Resonance Heating Methods and Relevant Experiments (2010)
  • Author(s): H. Igami, S. Kubo, T. Shimozuma, Y. Yoshimura, T. Notake, H. Takahashi, H. Idei, S. Inagaki, H. Tanaka, K. Nagasaki, et al.
  • Journal Title: Fusion Sci. Technol Volume: 58 Pages: 539-550
  • URL: http://www.new.ans.org/pubs/journals/fst/a_10841
  • Peer Reviewed
• [Journal Article] ECCD Experiments Using the Upgraded Launching Systemin Heliotron J (2010)
  • Author(s): K. Nagasaki, K. Sakamoto, K. Minami, H. Yoshino, T. Mizuuchi, H. Okada, K. Hanatani, T. Minami, K. Masuda, S. Kobayashi, S. Yamamoto, S. Konoshima, Y. Nakamura, S. Ohshima, K. Mukai, S. Kishi, H. Y. Lee, Y. Takabatake, G. Motojima, et al.
  • Journal Title: Contrib. Plasma Phys Volume: 50, No.6-7 Pages: 656-660
  • DOI: DOI:10.1002/ctpp.200900018
  • Peer Reviewed
• [Journal Article] Effect of magnetic field ripple on electron cyclotron current drive in Heliotron J (2010)
  • Author(s): K. Nagasaki, G. Motojima, S. Kobayashi, S. Yamamoto, et al.
  • Journal Title: Nucl. Fusion Volume: 50 Pages: 025003
  • DOI: DOI:10.1088/0029-5515/50/2/025003
  • Peer Reviewed
• [Journal Article] Electron Density Profile Measurement in Heliotron J with a Microwave AM Reflectometer (2010)
  • Author(s): K. Mukai, K. Nagasaki, V. Zhuravlev, T. Fukuda, T. Mizuuchi, T. Minami, H. Okada, S. Kobayashi, S. Yamamoto, et al.
  • Journal Title: Contrib. Plasma Phys Volume: 50 Pages: 646-650
  • DOI: DOI:10.1002/ctpp.200900023
  • Peer Reviewed
• [Journal Article] Investigation of Experimental Configuration for EBW Heating on LHD (2009)
  • Author(s): H. Igami, R. Ikeda, H. Takahashi, Y. Yoshimura, T. Shimozuma, S. Kubo, H. Tanaka, K. Nagasaki and T. Mutoh
  • Journal Title: Plasma Sci. Technol Volume: 11 Pages: 430-438
  • DOI: DOI:10.1088/1009-0630/11/4/13
  • Peer Reviewed
• [Journal Article] A Polarizer with Sinusoidal Grooves in the Electron Cyclotron Resonance Heating System of the HL-2A Tokamak (2009)
  • Author(s): G. Zhang, K. Nagasaki, et al.
  • Journal Title: Plasma Sci. Technol Volume: 11 Pages: 619-624
  • DOI: DOI:10.1088/1009-0630/11/5/20
  • Peer Reviewed
• [Journal Article] Configuration Control Experiments in Heliotron J (2009)
  • Author(s): T. Mizuuchi, S. Kobayashi, H. Okada, K. Nagasaki, S. Yamamoto, G. Motojima, et al.
  • Journal Title: Journal of Plasma and Fusion Res. SERIES Volume: 8 Pages: 0981-0986
  • URL: http://www.jspf.or.jp/JPFRS/PDF/Vol8/jpfrs2009_08-0981.pdf
  • Peer Reviewed
• [Journal Article] Electron Bernstein wave heating via the slow X. B mode conversion process with direct launching from the high field side in LHD (2009)
  • Author(s): H. Igami, Y. Yoshimura, S. Kubo, T. Shimozuma, H. Takahashi, H. Tanaka, K. Nagasaki, et al.
  • Journal Title: Nucl. Fusion Volume: 49 Pages: 115005
  • URL: http://www-pub.iaea.org/mtcd/meetings/fec2008/ex_p6-13.pdf
  • Peer Reviewed
• [Journal Article] Experimental Study of Non-Inductive Current in Heliotron J (2009)
  • Author(s): G. Motojima, K. Nagasaki, H. Okada, K. Watanabe, T. Mizuuchi, A. Matsuyama, K. Hanatani, S. Yamamoto, S. Kobayashi, et al.
  • Journal Title: Journal of Plasma and Fusion Res. SERIES Volume: Vol.8 Pages: 1010-1014
  • URL: http://www.jspf.or.jp/JPFRS/PDF/Vol8/jpfrs2009_08-1010.pdf
  • Peer Reviewed
• [Presentation] ヘリオトロンJにおけるECCDを用いた回転変換制御 (2011)
  • Author(s): 長崎百伸, 他
  • Organizer: Plasma Conf
  • Place of Presentation: 石川県立音楽堂
  • Year and Date: 20111122-25
• [Presentation] ヘリオトロンJにおけるマイクロ波反射計を用いた電子密度揺動計測 (2011)
  • Author(s): 水野浩志, 長崎百伸, 他
  • Organizer: Plasma Conf
  • Place of Presentation: 石川県立音楽堂
  • Year and Date: 20111122-25
• [Presentation] Recent Plasma Startup Experiments in TJ-IIand Heliotron J (2011)
  • Author(s): K. Nagasaki and E. Ascasibar
  • Organizer: 7th Integrated Operation Scenario Topical Group Meeting
  • Place of Presentation: Kyoto Univ
  • Year and Date: 20111018-21
• [Presentation] Development of Advanced Helical Fusion System (2011)
  • Author(s): K. Nagasaki, et al
  • Organizer: 2^<nd> Int. Symp. of Advanced Energy Science
  • Place of Presentation: Zero-emission energy, Kyoto Univ
  • Year and Date: 20110927-28
• [Presentation] Strong Microwaves and Terahertz Waves : Sources and Applications (2011)
  • Author(s): K. Nagasaki, et al
  • Organizer: 8th Int. Workshop
  • Place of Presentation: Russia
  • Year and Date: 20110709-16
• [Presentation] ヘリオトロンJにおける電子サイクロトロン電流駆動時のECE挙動 (2011)
  • Author(s): 長崎百伸, 他
  • Organizer: 第66回日本物理学会
  • Place of Presentation: 新潟大学
  • Year and Date: 20110325-28
• [Presentation] Experimental and Simulation Results on ECCD in Heliotron J (2011)
  • Author(s): K. Nagasaki, et al
  • Organizer: US-Japan Workshop on RF Physics
  • Place of Presentation: Toba
  • Year and Date: 20110208-09
• [Presentation] ヘリオトロンJにおける2つのラジオメータを用いたECE計測 (2010)
  • Author(s): 吉野隼生, 長崎百伸, 他
  • Organizer: 第27回プラズマ・核融合学会年会
  • Place of Presentation: 北海道大学
  • Year and Date: 20101130-1203
• [Presentation] ヘリオトロンJにおけるECCDに対する捕捉粒子の役割 (2010)
  • Author(s): 長崎百伸, 他
  • Organizer: 第27回プラズマ・核融合学会年会
  • Place of Presentation: 北海道大学
  • Year and Date: 20101130-1203
• [Presentation] ヘリオトロンJにおけるMHD不安定性の空間構造に関する研究 (2010)
  • Author(s): 諏訪勝重, 山本聡, 他
  • Organizer: 第27回プラズマ・核融合学会年会
  • Place of Presentation: 北海道大学
  • Year and Date: 20101130-1203
• [Presentation] Studies of MHD stability in Heliotron J plasmas (2010)
  • Author(s): S. Yamamoto, et al.
  • Organizer: International Symposium of Advanced Energy Science
  • Place of Presentation: Obaku Plaza, Kyoto University
  • Year and Date: 20101118-19
• [Presentation] Experimental Study of Second Harmonic ECCD in Heliotron J (2010)
  • Author(s): K. Nagasaki, et al.
  • Organizer: Proc. 23rd IAEA Fusion Energy Conf
  • Place of Presentation: Daejeon Convention Center, Daejeon, Korea
  • Year and Date: 20101011-16
• [Presentation] Results and Status of Profile Measurements in Heliotron J (2010)
  • Author(s): S. Yamamoto, S. Kobayashi, K. Nagasaki, et al.
  • Organizer: 7th CWGM
  • Place of Presentation: Greifswald
  • Year and Date: 20100630-0702
• [Presentation] ヘリオトロンJにおける高速イオン励起MHD揺動による高速イオン応答 (2010)
  • Author(s): 小林進二, 他
  • Organizer: 第8回核融合エネルギー連合講演会
  • Place of Presentation: 高山市民文化会館(岐阜県高山市)
  • Year and Date: 20100610-11
• [Presentation] 低磁気シアヘリカルプラズマにおける高速粒子励起MHD不安定性研究 (2010)
  • Author(s): 山本聡, 他
  • Organizer: 第8回核融合エネルギー連合講演会
  • Place of Presentation: 高山市民文化会館(岐阜県高山市)
  • Year and Date: 20100610-11
• [Presentation] Study of 70GHzSecond Harmonic X-mode ECCD in Heliotron J (2010)
  • Author(s): K. Nagasaki, et al.
  • Organizer: Proc. EC-16
  • Place of Presentation: Sanya, China
  • Year and Date: 20100412-15
• [Presentation] 先進ヘリカル配位における電子サイクロトロン電流駆動実験 (2010)
  • Author(s): 長崎百伸, 他
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山大学
  • Year and Date: 20100320-23
• [Presentation] ヘリオトロンJプラズマにおける電子密度分布の加熱特性依存性 (2010)
  • Author(s): 向井清史, 長崎百伸, 他
  • Organizer: 第65回日本物理学会
  • Place of Presentation: 岡山大学
  • Year and Date: 20100320-23
• [Presentation] ECCD Experiment Using Upgraded Launcher in Heliotron J (2010)
  • Author(s): K. Nagasaki, et al.
  • Organizer: Korea-Japan Joint Workshop on RF Heating Physics in Fusion Plasmas
  • Place of Presentation: NFRI, Daejeon, Korea
  • Year and Date: 20100308-09
• [Presentation] Physics Research on the Heliotron J Confinement (2009)
  • Author(s): F. Sano, et al.
  • Organizer: Int. Toki Conference 19
  • Place of Presentation: Toki
  • Year and Date: 20091228-11
• [Presentation] Study of Non-Inductive Current in Heliotron J (2009)
  • Author(s): K. Nagasaki, et al.
  • Organizer: APFA2009 and APPTC2009
  • Place of Presentation: Aomori, Japan
  • Year and Date: 20091227-30
• [Presentation] Study of ECCD Physics and Iota Profile Control in Heliotron J (2009)
  • Author(s): K. Nagasaki, et al.
  • Organizer: Proc. 17th Int. Stellarator/Heliotron Workshop
  • Place of Presentation: Princeton Plasma Phys. Lab
  • Year and Date: 20091212-16
• [Presentation] ヘリオトロンJにおける改良された電子サイクロトロン波入射システムによる電流駆動実験 (2009)
  • Author(s): 南桂史, 長崎百伸, 他
  • Organizer: 第26回プラ・核学会年会
  • Place of Presentation: 京都市国際交流会館
  • Year and Date: 20091201-04
• [Presentation] ヘリカル軸ヘリオトロン磁場配位の最適化研究 (2009)
  • Author(s): 山本聡, 他
  • Organizer: 第26回プラズマ・核融合学会年会
  • Place of Presentation: 京都市国際交流会館
  • Year and Date: 20091201-04
• [Presentation] Study of Improved Confinement Modes in Heliotron J (2009)
  • Author(s): T. Mizuuchi, F. Sano, K. Nagasaki, H. Okada, T. Minami, S. Kobayashi, S. Yamamoto, et al.
  • Organizer: 17th Int Stellarator/Heliotron Workshop
  • Place of Presentation: Princeton Plasma Phys. Lab
  • Year and Date: 20091012-16
• [Presentation] Energetic particle transport in NBI plasmas of Heliotron J (2009)
  • Author(s): S. Kobayashi, et al.
  • Organizer: Proc. 17th Int. Stellarator/Heliotron Workshop
  • Place of Presentation: Princeton Plasma Phys. Lab
  • Year and Date: 20091012-16
• [Presentation] ECCD Experiments Using Upgraded Launcher in Heliotron J (2009)
  • Author(s): K. Nagasaki, et al.
  • Organizer: US-EU-Japan RF Workshop
  • Place of Presentation: Kyshu National Musium, Japan
  • Year and Date: 20090916-18
• [Presentation] Recent Results on ECCD Experiment in Heliotron J (2009)
  • Author(s): K. Nagasaki, et al.
  • Organizer: The3rd Japan-Korea Workshop on Plasma Heating and Current Drive Systems
  • Place of Presentation: NIFS
  • Year and Date: 20090805-07
• [Presentation] ECCD Experiments and Possibilities of Iota Profile Control in Heliotron J (2009)
  • Author(s): K. Nagasaki, G. Motojima, et al.
  • Organizer: US-J and Korea-Japan Workshop on RFPlasma Phys
  • Place of Presentation: NIFS
  • Year and Date: 20090316-18
• [Presentation] Initial Results from a Comparative study of Configurational Effects and Alfven Range activity in H-1 and Heliotron J (2009)
  • Author(s): B. D. Blackwell, D. G. Pretty, S. Yamamoto, K. Nagasaki, F. Detering
  • Organizer: 8th Japan-Australia Plasma Diagnostics Workshop
  • Place of Presentation: Australia
  • Year and Date: 20090202-08
• [Presentation] Millimeter Wave Diagnostics for Heliotron J (2009)
  • Author(s): K. Nagasaki, et al.
  • Organizer: 8th Japan-Australia Plasma Diagnostics Workshop
  • Place of Presentation: Australia
  • Year and Date: 20090202-05
• [Presentation] 小特集核融合プラズマにおける電子サイクロトロン加熱・電流駆動の進展3. 3ヘリカル装置におけるECH・ECCDの進展 (2009)
  • Author(s): 下妻隆、長崎百伸
  • Organizer: プラズマ・核融合学会誌
  • Year and Date: 20090000
• [Presentation] ヘリオトロンJにおけるECCD実験 (2009)
  • Author(s): 長崎百伸、南桂史、坂本欣三、本島厳、小林進二、山本聡、他
  • Organizer: 平成21年度「ミリ波・サブミリ波応用の新展開ための調査研究
  • Place of Presentation: NIFS
  • Year and Date: 2009-08-05
• [Remarks]
  • URL: http://www.iae.kyoto-u.ac.jp/beam/index_j.html