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2000 Fiscal Year Final Research Report Summary

Study of Plasma Fluctuation Visualization Using Imaging Reflectometry

Research Project

Project/Area Number 11680495
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Nuclear fusion studies
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

MASE Atsushi  Advanced Science and Technology Center for Cooperative Research, KYUSHU UNIVERSITY Professor, 先端科学技術共同研究センター, 教授 (00023325)

Co-Investigator(Kenkyū-buntansha) ITAKURA Akiyosi  University of Tsukuba, Institute of Physics, Associate Professor, 物理学系, 助教授 (80015544)
Project Period (FY) 1999 – 2000
KeywordsMillimeter wave / Plasma diagnostics / Imaging array / Fluctuation analysis / Plasma confinement
Research Abstract

During the period of this research project, following results were obtained.
1) Millimeter-wave two-dimensional imaging array has been improved, and applied to the GAMMA 10 tandem mirror for the simultaneous measurement of phase imaging and ECE (electron cyclotron emission) imaging in one plasma shot.
2) A novel detector using MMIC technology has been fabricated in collaboration with Teratec Corporation. The detector consists of the integration of a bow-tie antenna, a down-converting mixer using a Schottky barrier diode, and HBT (hetero-junction bipolar transistor) amplifiers on a GaAs substrate. The heterodyne characteristics of the detector were evaluated at 70-140 GHz. The response of intermediate frequency (IF) up to 10 GHz was confirmed, which is one order broader than that of a hybrid detector.
3) The optics for ECE imaging on Large Helical Device (LHD) at the National Institute for Fusion Science (NIFS) were designed by using a ray-tracing method to focus radiation signals onto a detector array. It consists of an ellipsoidal mirror and a plane mirror. The Airy pattern of a point source and the magnification factor at 140 GHz were in good agreement with the designed values.
4) The millimeter-wave imaging system was installed in LHD.The ECE signal was confirmed at IF=1-4 GHz channels of two detectors, simultaneously.
5) An FM and an ultrashort-pulse reflectomer have been applied to an inductively coupled plasma with a radio frequency source. In the latter case, the reflected waves are directly recorded to a digitizing scope with 50 GHz bandwidth, and analyzed by a wavelet transform based phase extraction method and a tomographic method which rely on a row signal waveform rather than on the group delay as a function of frequency. The results demonstrate the potential of the current system for time resolved density profile measurements of LHD plasmas as well as low temperature processing plasmas.

  • Research Products

    (61 results)

All Other

All Publications (61 results)

  • [Publications] S.Kobayashi,Y.Nakashima, et al.: "Neutral Particle Transport under Strong Hydrogen Recycling Condition in the GAMMA 10 Central Cell"Journal of Nuclear Materials. 266-269. 566-570 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Yoshikawa,K.Ikeda, et al.: "Calibration of Time-and Space-Resolving Vacuum, Ultraviolet Spectrograph for Plasma Diagnostics in the Tandem Mirror GAMMA 10"Japanese Journal of Applied Physics. 38・3A. 202-204 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Yatsu,T.Cho, et al.: "Improvement and Longer Operation of Potential Confinement in the GAMMA 10 Tandem Mirror"Proceedings of the 26th EPS Conference on Controlled Fusion and Plasma Physics. 23J. 461-464 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Negishi,A.Mase, et al.: "A Fully Monolithic Millimeter-Wave Detector for Plasma Diagnostics"Conference Digest of the 24th International Conference on Infrared and Millimeter Waves. TU-D2 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Hojo,H.Negishi,Y.Kurosawa A.Mase: "Ultrashort-Pulse Reflectometry for Off-Center Plasmas"Conference Digest of the 24th International Conference on Infrared and Millimeter Waves. TU-D3 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Hojo,M.Nakamura, et al.: "Effects of Alfven Ion Cyclotron Modes on Tandem Mirror Energy Transport"Journal of Plasma and Fusion Research. 75・9. 1089-1094 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Mase,H.Negishi, et al.: "Millimeter Wave Reflectometry and Imaging"Proceedings of the 9th International Symposium on Laser-Aided Plasma Diagnostics. 255-260 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ishii,T.Goto, et al.: "Observation of Gentle Hump Structure on Energy Distribution Function of End-Loss Ions in the rf-Driven Tandem Mirror"Physical Review Letters. 83・17. 3438-3441 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Nakashima,K.Yatsu, et al.: "Plasma Confinement and Behavior of Plasmas in the Minimum-B Region of the GAMMA 10 Tandem Mirror"Journal of Plasma and Fusion Research. 75・10. 1211-1218 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] L.G.Bruskin,A.Mase,Y.Yagi,T.Tamano: "Application of Orthogonal Wavelet Decomposition to Plasma Fluctuation Study"Japanese Journal of Applied Physics. 38・11B. L1345-L1347 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Yatsu,L.G.Bruskin, et al.: "Plasma Confinement in the GAMMA 10 Tandem Mirror"Nuclear Fusion. 39・11Y. 1707-1712 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Ichimura,H.Hojo, et al.: "Characteristics of Hot Ions with a Strong RF Heating in the GAMMA 10 Tandem Mirror"Nuclear Fusion. 39・11Y. 1995-1999 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Yatsu,T.Cho, et al.: "Potential Control for Improvement of Confinement in the GAMMA 10 Tandem Mirror"Czechoslovak Journal of Physics. 49・S83. 155-165 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Hojo,M.Nakamura, et al.: "Tandem Mirror Transport Study with AIC Fluctuations"Journal of Plasma and Fusion Research. 75・Series2. 230-233 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ito,Y.Kiwamoto, et al.: "Observation of Cyclotron Waves Resonantly Excited under Electron Cyclotorn Resonance Heating at Magnetic Beach"Journal of Plasma and Fusion Research. 75・Series2. 303-306 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Nakamura,M.Ichimura, et al.: "Alfven Wave Excitation Due to Pressure Anistropy in the GAMMA 10 Tandem Mirror"Journal of Plasma and Fusion Research. 75・Series2. 314-317 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] E.Kawamori,T.Tamano, et al.: "Preliminary Pellet Injection Experiment in the GAMMA 10 Tandem Mirror"Journal of Plasma and Fusion Research SERIES. 3. 473-476 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Hojo and A.Mase: "Ultrashort-Pulse Cross Polarization Scattering in Plasmas with Magnetic Shear"Journal of Plasma and Fusion Research SERIES. 3. 597-600 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 間瀬淳: "ミリ波技術とプラズマ計測"プラズマ核融合学会-第39回若手夏の学校テキスト. 207-226 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A,Mase,H.Negishi, et al.: "Development of Advanced Millimeter-Wave Plasma Diagnostics"Conference Digest of the 25th Intternational Conference on Infrared and Millimeter Waves. TUD2 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Hojo and A.Mase: "Theory and Simulation on Cross Polarization Scattering of Ultrashort-Pulse Electromagnetic Waves"Bulletin of the American Physical Society. 45・7. 81 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Itakura, M.Kato, et al.: "Simultaneous Measurement of an Electron Density Profile and a Density Fluctuation Using Ultrashort-Pulse Reflectometry"Journal of Plasma and Fusion Research. 76・11. 1198-1202 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Mase,H.Negishi, et al.: "ECE-Imaging Work on GAMMA 10 and LHD"Fusion Engineering and Design. 53. 87-95 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Saito,Y.Tatematsu, et al.: "Axi-Symmetrization of Radiation Pattern and Two Wave Heating of Fundamental ECRH in GAMMA 10"Fusion Engineering and Design. 53. 267-275 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Kogi,A.Mase, et al.: "Measurement of Cross-Polarization Scattering Using Ultrashort Pulse Microwaves"Review of Scientific Instruments. 72・1. 355-358 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Mase,M.Ohashi, et al.: "Application of Millimeter-Wave Imaging System to LHD"Review of Scientific Instruments. 72・1. 375-378 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Nakamura,M.Ichimura, et al.: "Axial Profile Measurement of Alfven Ion Cyclotron Eigenmode"Review of Scientific Instruments. 72・1. 394-397 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Sudo,Y.Nagayama, et al.: "Overview of Large Helical Device Diagnostics"Review of Scientific Instruments. 72・1. 483-491 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] E.Kawamori,T.Tamano, et al: "Study of Pellet-Plasma Interaction in the GAMMA 10 Tandem Mirror"Transactions of Fusion Technology. 39・1T. 257-260 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Itakura,N.Goto, et al.: "Microwave Reflectometry in the GAMMA 10 Device"Transactions of Fusion Technology. 39・1T. 265-268 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] プラズマ・核融合学会 編: "プラズマ生成と診断-応用への道-"コロナ社(出版予定).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Kobayashi, Y.Nakashima, M.Shoji, K.Tsuchiya, Y.Hasegawa, K.Md.Islam, N.Yamaguchi, M.Yoshikawa, A.Mase, T.Tamano, K.Yatsu: "Neutral Particle Transport under Strong Hydrogen Recycling Condition in the GAMMA 10 Central Cell"J.Nucl.Mater. Vol.266-269. 566-570 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Yoshikawa, K.Ikeda, Y.Okamoto, E.Kawamori, T.Ito, N.Yamaguchi, A.Mase, T.Tamano, K.Yatsu: "Calibration of Time- and Space-Resolving Vacuum Ultraviolet Spectrograph for Plasma Diagnostics in the Tandem Mirror GAMMA 10"Jpn.J.Appl.Phys.. Vol.38, No.3A. 202-204 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Yatsu, T.Cho, M.Hirata, H.Hojo, M.Ichimuira, K.Ishii, A.Itakura, I.Katanuma, J.Kohagura, A.Mase, Y.Nakashima, T.Saito, T.Tamano, Y.Tatematsu, M.Yoshikawa: "Improvement and Longer Operation of Potential Confinement in the GAMMA 10 Tandem Mirror"Proc.26th EPS Conf.on Contr.Fusion and Plasma Physics. Vol.23J. 461-464 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Negishi, A.Mase, N.Oyama, H.Matsuura, K.Uchida, A.Miura, Y.Nagayama, K.Kawahata: "A Fully Monolithic Millimeter-Wave Detector for Plasma Diagnostics"Conf.Digest 24th Int.Conf.on Infrared and Millimeter Waves, Monterey. (TU-D2). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Hojo, H.Negishi, Y.Kurosawa, A.Mase: "Ultrashort-Pulse Reflectometry for Off-Center Plasmas"Conf.Digest 24th Int.Conf.on Infrared and Millimeter Waves, Monterey. (TU-D3). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Hojo, M.Nakamura, S.Tanaka, M.Ichimura, A.Mase: "Effects of Alfven Ion Cyclotron Modes on Tandem Mirror Energy Transport"J.Plasma Fusion Res.. Vol 75, No.9. 1089-1094 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Mase, H.Negishi, N.Oyama, L.Bruskin, S.Kubota, H.Hojo, K.Yatsu, T.Tokuzawa, Y.Nagayama, K.Kawahata, K.Watabe, K.Mizuno, H.Matsuura, K.Uchida, A.Miura, C.W.Domier, N.C.Luhmann, Jr.: "Millimeter Wave Reflectometry and Imaging"Proc.9th Int.Symp.on Laser-Aided Plasma Diagnostics, Lake Tahoe. 255-260 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Ishii, T.Goto, Y.Goi, N.Kikuno, Y.Katsuki, M.Nagasaki, Y.Ono, N.Ishibashi, M.Yamanashi, M.Nakamura, I.Katanuma, A.Mase, M.Ichimura, A.Itakura, T.Tamano, K.Yatsu: "Observation of Gentle Hump Structure on Energy Distribution Function of End-Loss Ions in the RF-Driven Tandem Mirror"Phys.Rev.Lett.. Vol.83, No.17. 3438-3441 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Nakashima, K.Yatsu, K.Islam, D.Sato, A.Wada, K.Ishii, A.Itakura, M.Ichimura, I.Katanuma, K.Kajiwara, S.Kubota, J.Kohagura, S.Kobayashi, T.Saito, T.Sasuga, Y.Tatematsu, T.Tamano, T.Cho, T.Tokuzawa, Y.Nishizawa, M.Hamada, R.Baba, M.Hirata, L.Bruskin, H.Hojo, A.Mase, R.Minami, M.Yoshikawa: "Plasma Confinement and Behavior of Plasmas in the Minimum-B Region of the GAMMA 10 Tandem Mirror"J.Plasma Fusion Res.. Vol.75, No.10. 1211-1218 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] L.G.Bruskin, A.Mase, Y.Yagi, T.Tamano: "Application of Orthogonal Wavelet Decomposition to Plasma Fluctuation Study"Jpn.J.Appl.Phys.. Vol.39, No.11. L1345-L1347 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Yatsu, L.G.Bruskin, T.Cho, M.Hamada, M.Hirata, K.Ishii, H.Hojo, M.Ichimura, K.Ishii, A.Itakura, I.Katanuma, Y.Kiwamoto, J.Kohagura, S.Kubota, A.Mase, Y.Nakashima, T.Saito, N.Sakamoto, T.Tamano, Y.Tatematsu, T.Tokuzawa, M.Yoshikawa: "Plasma Confinement in the GAMMA 10 Tandem Mirror"Nucl.Fusion. Vol.39, No.11Y. 1707-1712 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Ichimura, H.Hojo, K.Ishii, A.Mase, Y.Nakashima, T.Saito, T.Tamano, K.Yatsu: "Characteristics of Hot Ions with a Strong RF Heating in the GTAMMA 10 Tandem Mirror"Nucl.Fusion. Vol.39, No.11Y. 1995-1999 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Yatsu, T.Cho, M.Hirata, H.Hojo, M.Ichimura, K.Ishii, A.Itakura, I.Katanuma, J.Kohagura, A.Mase, Y.Nakashima, T.Saito, T.Tamano, S.Tanaka, Y.Tatematsu, M.Yoshikawa: "Potential Control for Improvement of Confinement in the GAMMA 10 Tandem Mirror"Czechoslovak J.Phys.. Vol.49, No.S83. 155-165 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Hojo, M.Nakamura, S.Tanaka, M.Ichimura, A.Mase: "Tandem Mirror Transport Study with AIC Fluctuations"J.Plasma Fusion Res.SERIES 2. 230-233 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Ito, Y.Kiwamoto, T.Saito, Y.Tatematsu, H.Abe, K.Kajiwara, A.Suzuki, A.Mase, T.Tamano, K.Yatsu: "Observation of Cyclotron Waves Resonantly Excited under Electron Cyclotron Resonance Heating at Magnetic Beach"J.Plasma Fusion Res.SERIES 2. 303-306 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Nakamura, M.Ichimura, S.Tanaka, S.Kanazawa, S.Motegi, S.Saosaki, K.Sakata, C.Nakagawa, K.Kadoya, T.Kawabata, Y.Ohta, H.Hojo, A.Mase, T.Tamano, and K.Yatsu: "Alfven Wave Excitation Due to Pressure Anisotropy in the Gamma 10 Tandem Mirror"J.Plasma Fusion Res.SERIES 2. 314-317 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] E.Kawamori, T.Tamano, Y.Nakashima, M.Yoshikawa, S.Kobayashi, T.Cho, K.Ishii, A.Mase, K.Yatsu: "Preliminary Pellet Injection Experiment in the GAMMA 10 Tandem Mirror"J.Plasma Fusion Res.SERIES 3. 473-476 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Hojo, A.Mase: "Ultrashort-Pulse Cross Polarization Scattering in Plasmas with Magnetic Shear"J.Plasma Fusion Res.SERIES 3. 597-600 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Mase: "Millimeter-Wave Technology and Plasma Diagnostics"Text Book of Summer School, The Japan Society of Plasma Science and Nuclear Fusion Research. 207-226 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Mase, H.Negishi, N.Oyama, H.Matsuura, K.Uchida, A.Miura, Y.Nagayama, K.Kawahata: "Development of Advanced Millimeter-Wave Plasma Diagnostics"Conf.Digest 25th Int.Conf.on Infrared and Millimeter-Waves, Beijing. (TU-D2)(invited). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Hojo, A.Mase: "Theory and Simulation on Cross Polarization Scattering of Ultrashort-Pulse Electromagnetic Waves"Bull.Am.Phys.Soc.. Vol.45, No.7. 81 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Itakura, M.Katoh, S.Kubota, A.Mase, T.Onuma, H.Hojo, K.Yatsu: "Simultaneous Measurements of an Electron Density Profile and a Density Fluctuation Using Ultrashort-Pulse Reflectometry"J.Plasma Fusion Res.. Vol.76, No.11. 1198-1202 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Mase, H.Negishi, N.Oyama, K.Watabe, K.Mizuno, Y.Nagayama, K.Kawahata, H.Matsuura, K.Uchida, A.Miura, T.Tamano, K.Yatsu: "ECE-Imaging Work on GAMMA 10 and LHD"Fusion Eng.Design. Vol.53. 87-95 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Saito, Y.Tatematsu, Y.Kiwamoto, H.Abe, M.Ishikawa, K.Kajiwara, D.Koyama, A.Suzuki, T.Cho, M.Ichimura, K.Ishii, A.Itakura, A.Mase, N.Oyama, and K.Yatsu: "Axi-Synnetrization of Radiation Pattern and Two Wave heating of Fundamental ECRH in GAMMA 10"Fusion Eng.Design. Vol.53. 267-275 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Kogi, A.Mase, H.Hojo, A.Itakura, M.Ichimura, T.Tamano: "Measurement of Cross-Polarization Scattering Using Ultrashort Pilse Microwaves"Rev.Sci.Instrum.. Vol.72, No.1. 355-358 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Mase, M.Ohashi, A.Yamamoto, H.Negishi, N.Oyama, Y.Nagayama, K.Kawahata, K.Watabe, K.Mizuno, H.Matsuura, K.Uchida, A.Miura: "Application of Millimeter-Wave Imaging System to LHD"Rev.Sci.Instrum.. Vol.72, No.1. 375-378 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Nakamura, M.Ichimura, Y.Ohta, M.Oikawa, S.Tanaka, Y.Kogi, Y.Shima, S.Saosaki, K.Kadoya, T.Kawabata, H.Kano, A.Itakura, H.Hojo, A.Mase, K.Yatsu: "Axial Profile Measurement of Alfven Ion Cyclotron Eigenmode"Rev.Sci.Instrum.. Vol.72, No.1. 394-397 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Sudo, Y.Nagayama et al.: "Overview of Large Helical Device Diagnostics"Rev.Sci.Instrum.. Vol.72, No.1. 484-491 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] E.Kawamori, T.Tamano, Y.Nakashima, M.Yoshikawa, K.Kobayashi, K.Watanabe, H.Aminaka, T.Cho, K.Ishii, A.Mase, K.Yatsu: "Study of Pellet-Plasma Interaction in the GAMMA 10 Tandem Mirror"Trans.Fusion Technology. Vol.39, No.1T. 257-260 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Itakura, N.Goto, M.Katoh, Y.Kogi, Y.Shima, H.Hojo, K.Yatsu, S.Kubota, A.Mase, T.Onuma: "Microwave Reflectometry in the GAMMA 10 Device"Trans.Fusion Technology. Vol.39, No.1T. 265-268 (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2002-03-26  

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