Developments of Terahertz time-domain spectroscopy for hightemperature and high-density plasma diagnostics

2012 Fiscal Year Final Research Report

• Project/Area Number: 22360394
• 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: TOKUZAWA Tokihiko 核融合科学研究所, ヘリカル研究部, 准教授 (90311208)
• Co-Investigator(Renkei-kenkyūsha): KADOYA Yutaka 広島大学, 先端物質科学研究科, 教授 (90263730) ; TANAKA Kenji 核融合科学研究所, ヘリカル研究部, 准教授 (50260047) ; YAMADA Ichihiro 核融合科学研究所, ヘリカル研究部, 准教授 (80222371)
• Project Period (FY): 2010 – 2012
• Keywords: プラズマ計測 / テラヘルツ波

Research Abstract

For applying a future nuclear fusion reactor, Terahertz time domain spectroscopy system, which a femto-second fiber laser is used as a pumped laser and a photo-conductive antenna is uses as a emitter, has been developed. The key factors which are a long distance transmission, a high time resolution, etc. are studied to get the technical characteristics for a future system design. Also, the analytical method to apply the plasma diagnostics has been obtained.

Research Products

• [Journal Article] Development of Terahertz Pulse Wave Diagnostics for a Magnetized Fusion Plasma Reactor (2013)
  • Author(s): T. Tokuzawa, Y. Kadoya, M. Tani, K. Yamamoto, M. Hangyo, H. Kitahara, K. Tanaka, I. Yamada, and K. Kawahata
  • Journal Title: Plasma Fusion Research Volume: Vol.8
  • Peer Reviewed
• [Journal Article] Microwave Doppler reflectometer system in LHD (2012)
  • Author(s): T. Tokuzawa, A. Ejiri, K. Kawahata, K. Tanaka, I. Yamada, M. Yoshinuma, K. Ida, and C. Suzuki
  • Journal Title: Review of Scientific Instruments Volume: 83
  • Peer Reviewed
• [Journal Article] Plasma Diagnostics Required for a Heliotron-Type DEMO Reactor (2012)
  • Author(s): M. Isobe, T. Akiyama, T. Tokuzawa, T. Tanaka, D. Kato, H. Sakaue, T. Goto, J. Miyazawa, A. Sagara
  • Journal Title: Plasma and Fusion Research Volume: Vol. 7 Pages: p.2405053
  • Peer Reviewed
• [Journal Article] Conceptual Design of Electron Density Measurement System for DEMO-Relevant Helical (2012)
  • Author(s): T. Akiyama, R. Yasuhara, T. Tokuzawa, M. Isobe, K. Kawahata, K. Nakayama, S. Okajima
  • Journal Title: Plasmas, Plasma and Fusion Research Volume: Vol. 7 Pages: p.2402013-1 -4
  • Peer Reviewed
• [Journal Article] 講座「電磁波 を用いたプラズマ診断の基礎と最前線」 「3.先進計測技術・最近の進展」 「3. 2 ドップラー反射計」 (2011)
  • Author(s): T. Tokuzawa, A. Ejiri
  • Journal Title: プラズマ・核 融合学会誌(Journal of Plasma and Fusion Research) Volume: Vol. 87, No. 6 Pages: pp.345-349
  • Peer Reviewed
• [Journal Article] Observation of Long-Distance Radial Correlation in Toroidal Plsasma Turbulence (2011)
  • Author(s): S.Inagaki, T. Tokuzawa, K. Itoh, K.Ida, S. .I. Itoh, N. Tamura, S. Sakakibara, N. Kasuya, A. Fujisawa, S. Kubo, T. Shimozuma, T. Ido, S. Nishimura, H. Arakawa, T. Kobayashi, K. Tanaka, Y. Nagayama, K. Kawahata, S. Sudo, H. Yamada, A. Komori, and LHD Experiment Group
  • Journal Title: Physical Review Letters Volume: Vol. 107, No.9 Pages: pp.115001-1-5
  • Peer Reviewed
• [Journal Article] Long Range Temperature Fluctuation in LHD (2011)
  • Author(s): S. Inagaki, T. Tokuzawa, K. Itoh, K.Ida, S. .I. Itoh, N. Tamura, S. Sakakibara, N. Kasuya, A. Fujisawa, S. Kubo, T. Shimozuma, T. Ido, S. Nishimura, H. Arakawa, T. Kobayashi, M. Yagi, K. Tanaka, Y. Nagayama, K. Kawahata, S. Sudo, H. Yamada, A. Komori, and LHD Experiment Group
  • Journal Title: Plasma and Fusion Research Volume: Vol. 6 Pages: pp.1402017-1-9
  • Peer Reviewed
• [Journal Article] Multifrequency channel microwave reflectometer with frequency hopping operation for density fluctuation measurements in Large Helical Device (2010)
  • Author(s): T.Tokuzawa, A. Ejiri, and K. Kawahata
  • Journal Title: Device",Review of Scientific Instruments Volume: Vol. 81 Pages: pp.10D906-1-4
  • Peer Reviewed
• [Journal Article] Developments of electron cyclotron emission spectroscopy and microwave reflectometry on LHD (2010)
  • Author(s): T. Tokuzawa, K. Kawahata, Y. Nagayama, S. Inagaki, P. Vries, P. Vries, A. Mase, Y. Kogi, Y. Yokota, H. Hojo, K. Tanaka, A. Ejiri, R. O. Pavlichenko, S. Yamaguchi, T. Yoshinaga, D. Kuwahara, Z. Shi, H. Tsuchiya, Y. Ito, S. Hirokura, S. Sudo, A. Komori and LHD Experiment Goup
  • Journal Title: Fusion Science and Technology Volume: Vol. 58, No.1 Pages: pp.364-374
• [Presentation] Developments of multi-channel Doppler reflectometer in LHD and THz pulse diagnostics for higher dense plasmas (2013)
  • Author(s): T. Tokuzawa, A. Ejiri, S. Inagaki, K. Ida, M. Yoshinuma, Y. Kadoya, M. Hangyo, M. Tani, K. Yamamoto, K. Tanaka, I. Yamada, K. Kawahata, and LHD Experiment Group
  • Organizer: 11th International Reflectometry Workshop (IRW11)
  • Place of Presentation: @Ecole Polytechnique, France
  • Year and Date: 20130422-25
• [Presentation] Developments of THz Pulse Wave Diagnostics for High-Density Plasma (2013)
  • Author(s): T. Tokuzawa, Y. Kadoya, M. Hangyo, M. Tani, K.Yamamoto, J. Kohagura, M. Yoshikawa, M. Nishiura, K.Tanaka, I. Yamada, and K. Kawahata
  • Organizer: U.S.-Japan Workshop on Millimeter Wave Technology and Fusion Plasma Fluctuation Diagnostics
  • Place of Presentation: @UCDavis, Claifornia, USA
  • Year and Date: 20130113-18
• [Presentation] マイクロ波ーTHz波パルスを用 いた核燃焼プラズマ計測」、NIFS 一般共 同研究「磁場閉じ込め及び慣性閉じ込め 核融合プラズマ診断の新展開 (2013)
  • Author(s): 徳沢季彦、角屋豊, 萩行正憲, 谷正彦, 山本晃司, 小波蔵純子, 吉川正志, 西 浦正樹, 田中謙治, 山田一博, 川端一 男
  • Organizer: 」核融合エ ネルギーフォーラムプラズマ物理クラ スター計測サブクラスター合同会合
  • Place of Presentation: @核融合科学研究所
  • Year and Date: 20130109-10
• [Presentation] Developments of Nuclear Fusion Plasma Diagnostics Using by Pulsed Terahertz Wave (2012)
  • Author(s): T. Tokuzawa, Y. Kadoya, M. Tani, K. Yamamoto, M. Hangyo, H. Kitahara, K. Tanaka, I. Yamada, and K. Kawahata
  • Organizer: International Symposium on Frontiers in THz Technology (FTT 2012)
  • Place of Presentation: Todaiji Culture Center, Nara, Japan
  • Year and Date: 20121126-30
• [Presentation] Developments of Terahertz Pulse Wave Diagnostics for Magnetized Fusion Plasma Reactor (2012)
  • Author(s): T. Tokuzawa, Y. Kadoya, M. Tani, K. Yamamoto, M. Hangyo, H. Kitahara, K. Tanaka, I. Yamada, and K. Kawahata
  • Organizer: 22th International Toki Conference (ITC-22) on Cross-Validation of Experiment and Modeling for Fusion and Astrophysical Plasmas
  • Place of Presentation: Ceratopia Toki, Toki-City, Gifu, Japan
  • Year and Date: 20121119-22
• [Presentation] ミリ波を 用いた核燃焼プラズマ中のD/T燃料 比計測法の開発 (2012)
  • Author(s): 徳沢季彦、江尻晶 、関哲夫
  • Organizer: 第7回公開シンポジウ ム「核融合炉実現のためのトリチウム研 究の新展開
  • Place of Presentation: @ウインク愛知
  • Year and Date: 20120810-11
• [Presentation] ミリ波ーテラヘル ツ波を用いた核融合炉心プラズマ計 測 (2012)
  • Author(s): 徳沢季彦、角屋豊、谷正彦、萩行正憲、 江尻晶、川端一男
  • Organizer: 第9回核融合エネルギー連合講演会
  • Place of Presentation: 神戸国際会議場
  • Year and Date: 20120628-29
• [Presentation] テラヘルツ波パルスの高温プラズマ 計測への適用に関する研究 (2012)
  • Author(s): T. Tokuzawa, M. Hangyo, H. Kitahara, M. Tani, K. Yamamoto, Y. Kadoya, K.Tanaka, I. Yamada, and K. Kawahata
  • Organizer: レーザー研シンポジウム2012
  • Place of Presentation: 大阪大学銀杏会館
  • Year and Date: 20120417-0418
• [Presentation] ミリ波を用いた核燃焼プラズマ中のD/T燃料比計測法の開発 (2012)
  • Author(s): 徳沢季彦、江尻晶、関哲夫
  • Organizer: 特定領域「核融合ト リチウム」研究発表/交流会
  • Place of Presentation: @ウインク愛知
  • Year and Date: 20120316-17
• [Presentation] Developments of Pulsed Terahertz Wave Diagnostics for Nuclear Fusion Plasma Experiments (2012)
  • Author(s): T. Tokuzawa, Y. Kadoya, M. Tani, K. Yamamoto, M. Hangyo, H. Kitahara, K. Tanaka, I. Yamada, and K. Kawahat
  • Organizer: 4th International Workshop on Far-Infrared Technologies 2012 (IW-FIRT2012)
  • Place of Presentation: FIR-FU,Fukui
  • Year and Date: 20120307-09
• [Presentation] マイクロ波による核燃焼プ ラズマの密度・揺動計測 (2011)
  • Author(s): 徳沢季彦, 角屋豊, 萩行正憲, 谷正彦, 田中謙治, 山田一博, 江尻晶, 関哲夫, 川端一男
  • Organizer: NIFS 一般共 同研究「高密度核融合プラズマ診断の新 展開」核融合エネルギーフォーラムプラ ズマ物理クラスター計測サブクラスタ ー合同会合
  • Place of Presentation: 核融合科学研究所
  • Year and Date: 20111221-22
• [Presentation] Developments of Pulsed Terahertz Wave Diagnostics for Fusion Plasma (2011)
  • Author(s): T. Tokuzawa, Y. Kadoya, M. Hangyo, M. Tani, K.Tanaka, I. Yamada, and K. Kawahata
  • Organizer: 21st International Toki Conference (ITC-21)
  • Place of Presentation: Ceratopia Toki
  • Year and Date: 20111128-1201
• [Presentation] Kawahata,"Developments of HighTemperature and High-Density Plasma Diagnostics Using a Terahertz Wave (II) (2011)
  • Author(s): T. Tokuzawa, Y. Kadoya, M. Hangyo, M. Tani, K.Tanaka, I. Yamada, and K. Kawahata,
  • Organizer: Plasma Conference
  • Place of Presentation: Ishikawa Ongakudo, Japan
  • Year and Date: 20111122-25
• [Presentation] Application plan of terahertz wave diagnostics for high-temperature and high-density plasma experiments (2011)
  • Author(s): T. Tokuzawa, Y. Kadoya, M. Hangyo, K. Tanaka, I. Yamada, and K. Kawahata
  • Organizer: International Workshop on Optical Terahertz Science and Technology (OTST 2011)
  • Place of Presentation: Santa Barbara, CA, USA
  • Year and Date: 20110313-17
• [Presentation] ミリ波を用いた核燃焼プラズマ中のD/T 燃料比計測 (2011)
  • Author(s): 徳沢季彦、江尻晶、関哲夫、川端一男
  • Organizer: 核融合エネルギーフォ ーラムプラズマ物理クラスター計測サ ブクラスター平成22 年度第2回会合及 び科研費特定領域「プラズマ燃焼のため の先進計測」会合
  • Place of Presentation: 原子力機構システム計算科学センター7 階大会議室
  • Year and Date: 2011-02-02
• [Presentation] Developments of terahertz wave diagnostics for high-temperature and high-density plasma experiments (2010)
  • Author(s): T. Tokuzawa, Y. Kadoya, M. Hangyo, K. Tanaka, I. Yamada, and K. Kawahata
  • Organizer: 20th International Toki Conference (ITC-20) on The Next Twenty Years in Plasma and Fusion Science
  • Place of Presentation: Ceratopia Toki, Toki-City,Gifu, Japan
  • Year and Date: 20101207-10
• [Presentation] テラヘルツ波を用いた高温高密度プラズマ計測法の開発 (2010)
  • Author(s): 徳沢季彦、角屋豊、萩行正憲、田中謙治、山田一博、川端一男
  • Organizer: 第27回プラズマ・核融合学会年会
  • Place of Presentation: 北海道大学学術交流会館
  • Year and Date: 20101130-1203