Study of electron Bernstein emission for high-density plasma transport analysis
Project/Area Number |
18H01199
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 14020:Nuclear fusion-related
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Research Institution | Kyoto University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
伊神 弘恵 核融合科学研究所, ヘリカル研究部, 准教授 (10390634)
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Project Period (FY) |
2018-04-01 – 2022-03-31
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Project Status |
Completed (Fiscal Year 2021)
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Budget Amount *help |
¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
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Keywords | 電子バーンスタイン波 / 電子温度計測 |
Outline of Final Research Achievements |
Electron Bernstein emission (EBE), which has no cutoff density, has been measured and the mode conversion process has been experimentally investigated to evaluate the electron temperature profile in overdense plasmas. The electron cyclotron emission (ECE) converted from the EBE has been successfully observed with a 16-channel Ka-band radiometer in the Heliotron J and LHD devices. In Heliotron J, the ECE intensity is maximal when the antenna is oriented toward the OX window, and the ECE frequency spectrum depends on the magnetic field strength. The ECE from the BXO mode conversion in LHD has a strong Doppler shift due to the large parallel refractive index.
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Academic Significance and Societal Importance of the Research Achievements |
核融合プラズマにおけるエネルギー閉じ込めの物理機構を解明するためには、炉心領域での詳細な分布計測による輸送解析が必要不可欠である。電子サイクロトロン波を用いた従来の電磁波計測では、カットオフ密度と呼ばれる密度上限が存在するため、オーバーデンスプラズマでの電子温度分布計測が困難となっている。本研究では、静電波の一つでありカットオフ密度が存在しない電子バーンスタイン放射(EBE)を用いることで高密度プラズマでの電子温度を評価した。モード変換効率が最大となるOX窓において最大ECE強度が得られるとともに、電子温度を反映したドップラーシフトした周波数スペクトルが得られた。
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Report
(5 results)
Research Products
(50 results)
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[Journal Article] Numerical analysis of heat load distribution in Heliotron J with magnetic field tracing and plasma transport modeling2021
Author(s)
R Matoike, G. Kawamura, S. Ohshima, Y. Suzuki, M. Kobayashi, S. Masuzaki, S. Kobayashi, S. Kado, T. Minami, H. Okada, T. Mizuuchi, S. Konoshima, Y. Feng, H. Frerichs, K. Nagasaki
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Journal Title
Plasma Phys. Control. Fusion
Volume: 63
Pages: 115002
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Numerical investigation into the peripheral energetic-particle-driven MHD modes in Heliotron J with free boundary hybrid simulation2021
Author(s)
P. Adulsiriswad, Y. Todo, S. Kado, S. Yamamoto, S. Kobayashi, S. Ohshima, H. Okada, T. Minami, Y. Nakamura, A. Ishizawa, S. Konoshima, T. Mizuuchi and K. Nagasaki
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Journal Title
Nucl. Fusion
Volume: 61
Pages: 116065
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Isotope effect on zonal flow and its configuration dependence in low-density electron-cyclotron-resonance heated plasmas in Heliotron J2021
Author(s)
S. Ohshima, H. Okada, L. Zang, S. Kobayashi, T. Minami, S. Kado, P. Adulsiriswad, D. Qiu, R. Matoike, M. Luo, P. Zhang
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Journal Title
Plasma Phys. Control. Fusion
Volume: 63
Pages: 104002
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Development of a multi-channel 320 GHz interferometer for high density plasma measurement in Heliotron J2021
Author(s)
S. Ohshima, P. Zhang, H. Kume, C. Deng, A. Miyashita, S. Kobayashi, H. Okada, T. Minami, S. Kado, P. Adulsiriswad, D. Qiu, M. Luo, R. Matoike, T. Suzuki, S. Konoshima, T. Mizuuchi, and K. Nagasaki
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Journal Title
Review of Scientific Instruments
Volume: 92
Pages: 053519
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Measurement of Radial Correlation Lengths of Electron Density Fluctuations in Heliotron J Using O-Mode Reflectometry2020
Author(s)
Niels SMITH, Kazunobu NAGASAKI, Josefine H.E. PROLL, Hiroyuki OKADA, Takashi MINAMI, Shin-ichiro KADO, Shinji KOBAYASHI, Shinsuke OHSHIMA, Shigeru KONOSHIMA, Tohru MIZUUCHI, Yuji NAKAMURA, Akihiro ISHIZAWA, Tsuyoshi TOMITA, Takeshi FUKUDA and Yasuto KONDO
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Journal Title
Plasma and Fusion Research
Volume: 15
Pages: 1202054
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Measurement of Electron Temperature Profile and Fluctuation with ECE Radiometer System in Heliotron J2020
Author(s)
Maoyuan LUO, Kazunobu NAGASAKI, Gavin WEIR, Hiroyuki OKADA, Takashi MINAMI, Shinichiro KADO, Shinji KOBAYASHI, Satoshi YAMAMOTO, Shinsuke OHSHIMA, Tohru MIZUUCHI, Shigeru KONOSHIMA, Yuji NAKAMURA and Akihiro ISHIZAWA
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Journal Title
Plasma and Fusion Research
Volume: 15
Pages: 2402038
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Study of seed plasma generation for NBI plasma start-up using non-resonant microwave launch in Heliotron J2020
Author(s)
S Kobayashi, K Nagasaki, T Stange, T Mizuuchi, H Okada, T Minami, S Kado, S Yamamoto, S Ohshima, K Hada, G Weir, S Konoshima, Y Nakamura, N Kenmochi, Y Otani, X X Lu, A Panith, K Toi and Y Suzuki
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Journal Title
Plasma Physics and Controlled Fusoin
Volume: 62
Pages: 065009
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Reformation of the Electron Internal Transport Barrier with the Appearance of a Magnetic Island2020
Author(s)
N. Kenmochi, T. Minami, T. Mizuuchi, C. Takahashi, G. M. Weir, K. Nishioka, S. Kobayashi, Y. Nakamura, H. Okada, S. Kado, S. Yamamoto, S. Ohshima, S. Konoshima, Y. Ohtani and K. Nagasaki
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Journal Title
Scientific Reports
Volume: 10
Pages: 5
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Measurement of stray millimeter-wave radiation from a 70-GHz ECH/ECCD system in Heliotron J2019
Author(s)
K. Nagasaki, S. Watanabe, K. Sakamoto, A. Isayama, H. Okada, T. Minami, S. Kado, S. Kobayashi, S. Yamamoto, S. Ohshima, S. Konoshima, T. Mizuuchi, Y. Nakamura, A. Ishizawa, S. Kubo, H. Igami, G. Weir, N. Marushchenko
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Journal Title
Fusion Engineering and Design
Volume: 144
Pages: 40-45
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] First Application of 3D Peripheral Plasma Transport Code EMC3-EIRENE to Heliotron J2019
Author(s)
Ryota MATOIKE, Gakushi KAWAMURA, Shinsuke OHSHIMA, Masahiro KOBAYASHI, Yasuhiro SUZUKI, Kazunobu NAGASAKI, Suguru MASUZAKI, Shinji KOBAYASHI, Satoshi YAMAMOTO, Shinichiro KADO, Takashi MINAMI, Hiroyuki OKADA, Shigeru KONOSHIMA, Toru MIZUUCHI, Hirohiko TANAKA, Hiroto MATSUURA, Yuhe FENG and Heinke FRERICHS
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Journal Title
Plasma and Fusion Research
Volume: 14
Pages: 3403127
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] High-density experiments with hydrogen ice pellet injection and analysis of pellet penetration depth in Heliotron J2019
Author(s)
G Motojima, H Okada, H Okazaki, S Kobayashi, K Nagasaki, R Sakamoto, , H Yamada, S Kado, S Ohshima, T Minami, N Kenmochi, Y Ohtani, Y Nozaki, Y Yonemura, Y Nakamura, S Konoshima, S. Yamamoto, T Mizuuchi and K Y Watanabe
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Journal Title
Plasma Physics and Controlled Fusion
Volume: 61
Pages: 075014
DOI
Related Report
Peer Reviewed
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[Journal Article] Development of a correlation ECE radiometer for electron temperature fluctuation measurements in Heliotron J2019
Author(s)
Gavin M. Weir, Kazunobu Nagasaki, Jinxiang Zhu, Maoyuan Luo, Hiroyuki Okada, Takashi Minami, Shinichiro Kado, Shinji Kobayashi, Satoshi Yamamoto, Shinsuke Ohshima, Shigeru Konoshima, Yuji Nakamura, Akihiro Ishizawa, Xiang-xun Lu, Linge Zang, Nikolai Marushchenko, Yasuo Yoshimura and Tohru Mizuuchi
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Journal Title
EPJ Web of Conferences
Volume: 203
Pages: 03013
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Measurement of Stray Millimeter-wave Radiation from a 70-GHz ECH/ECCD System in Heliotron J2019
Author(s)
K. Nagasaki, S. Watanabe, K. Sakamoto, A. Isayama, H. Okada, T. Minami, S. Kado, S. Kobayashi, S. Yamamoto, S. Ohshima, S. Konoshima, T. Mizuuchi, Y. Nakamura, A. Ishizawa, S. Kubo, H. Igami, G. Weir, N. Marushchenko
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Journal Title
Fusion Engineering and Design
Volume: 印刷中
Pages: 印刷中
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Observation of a beam-driven low-frequency mode in Heliotron J2019
Author(s)
L.G. Zang, S. Yamamoto, D.A. Spong, K. Nagasaki, S. Ohshima, S. Kobayashi, T. Minami, X.X. Lu, N. Nishino, S. Kado, P. Adulsiriswad, H. Okada, N. Kenmochi, S. Inagaki, J.X. Zhu, G.M. Weir, T. Mizuuchi, S. Konoshima, A. Ishizawa, D.L. Yu, Z.B. Shi, Yi Liu, L.W. Yan, J.Q. Li, Q.W. Yang, M. Xu, X.R. Duan and Yong Liu
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Journal Title
Nuclear Fusion
Volume: 59
Pages: 056001
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Effect of Magnetic Configuration on Energy Confinement and Energetic-Particle-Driven MHD Modes in Heliotron J2021
Author(s)
K. Nagasaki, S. Ohshima, P. Adulsiriswad, Y. Yamanaka, S. Murata, T. Minami, S. Kado, S. Kobayashi, S. Konoshima, T. Mizuuchi, H. Okada, Y. Kishimoto, Y. Nakamura, A. Ishizawa, D. Qiu, M. Luo, A. Iwata, P. Zhang, C. Wang, M. Miyoshi, Y. Kondo, Y. Todo, S. Yamamoto, A. Cappa, N. Marushchenko, J. Proll, N. Smith
Organizer
28th IAEA Fusion Energy Conference
Related Report
Int'l Joint Research
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[Presentation] Peripheral Plasma Transport Characteristics arising from 3D Magnetic Field Structure in Heliotron J2021
Author(s)
R. Matoike, G. Kawamura, S. Ohshima, Y. Suzuki, M. Kobayashi, S. Masuzaki, S. Kobayashi, S. Kado, T. Minami, H. Okada, T. Mizuuchi, S. Konoshima, Y. Feng, H.Frerichs, K. Nagasaki
Organizer
The 24th International Conference on Plasma Surface Interactions in Controlled Fusion Devices
Related Report
Int'l Joint Research
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[Presentation] Isotope Effects on Nonlinear Turbulence System in a Torus Plasma2020
Author(s)
S. Ohshima, H. Okada, L. Zang, S. Kobayashi, S. Yamamoto, T. Minami, S. Kado, Y. Nakamura, S. Konoshima, T. Mizuuchi, N. Kenmochi, Y. Ohtani, M Motoshima, P. Adlsriiswad, R. Matoike, D. Qiu, M. Luo, K. Nagasaki
Organizer
4th Asia-Pacific Conference on Plasma Physics
Related Report
Int'l Joint Research / Invited
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[Presentation] Energetic-particle-driven MHD Instabilities and Their Control by ECH/ECCD in Helical Plasmas2019
Author(s)
K. Nagasaki, S. Yamamoto, K. Nagaoka, J. Varela, A. Cappa, E. Ascasibar, F. Castejon, A. Ishizawa, M. Isobe, S. Kado, S. Kobayashi, N. Marushchenko, A. Melnikov, T. Minami, T. Mizuuchi, Y. Nakamura, K. Ogawa, S. Ohshima, H. Okada, M. Osakabe, and G.M. Weir
Organizer
46th European Physical Society Conference on Plasma Physics (EPS 2019)
Related Report
Int'l Joint Research / Invited
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[Presentation] Control of Energetic Particle Driven Instabilities by ECH/ECCD in Helical Systems2019
Author(s)
K. Nagasaki, S. Yamamoto, K. Nagaoka, J. Varela, A. Cappa, E. Ascasibar, F. Castejon, A. Ishizawa, M. Isobe, S. Kado, S. Kobayashi, N. Maruchchenko, A. Melnikov, T. Minami, T. Mizuuchi, Y. Nakamura, K. Ogawa, S. Ohshima, H. Okada, M. Osakabe, and G.M. Weir
Organizer
2nd US/Japan Workshop on “Progress on Advanced Concept Optimization and Modeling in Stellarator-Heliotrons”
Related Report
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[Presentation] Measurement of Stray Millimeter-Wave Radiation from 70-GHz ECH/ECCD System in Heliotron J2019
Author(s)
K. Nagasaki, S. Watanabe, K. Sakamoto, A. Isayama, H. Okada, T. Minami, S. Kado, S. Kobayashi, S. Yamamoto, S. Ohshima, S. Konoshima, T. Mizuuchi, Y. Nakamura, A. Ishizawa, S. Kubo, H. Igami, G. Weir, N. Marushchenko
Organizer
Korea-Japan Workshop on Physics and Technology of Heating and Current Drive
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[Presentation] ヘリオトロンJにおける電子バーンスタイン放射を用いた電子温度計測2019
Author(s)
長﨑百伸, 伊神弘恵, Francesco Volpe, 小林進二, 中村祐司, 南貴司, 門信一郎, 山本聡, 大島慎介, 水内亨, 木島滋, 石澤明宏, Maoyuan Luo, Nikolai Marushchenko
Organizer
日本物理学会第74回年次大会
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[Presentation] Measurement of Stray Millimeter-Wave Radiation from 70-GHz ECH/ECCD System in Heliotron J2018
Author(s)
K. Nagasaki, S. Watanabe, K. Sakamoto, A. Isayama, H. Okada, T. Minami, S. Kado, S. Kobayashi, S. Yamamoto, S. Ohshima, S. Konoshima, T. Mizuuchi, Y. Nakamura, A. Ishizawa, S. Kubo, H. Igami, G. Weir, N. Marushchenko
Organizer
2018 US-EU-Japan RF Heating Technology WS/US-Japan WS on RF Heating Physics
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