| Project/Area Number |
63044061
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | National Institute for Fusion Science (1989-1990)
Nagoya University (1988) |
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Principal Investigator |
FUJITA Junji National Institute for Fusion Science, 教授 (50023700)
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| Co-Investigator(Kenkyū-buntansha) |
HOLMES A J T Culham Laboratory, AEA Fusion, AEA Technology, 研究員
GROSMAN A Department de Recherches sur la Fusion Controlee, Associaton Euratomcea sur la F, 研究員
BRETON C Department de Recherches sur la Fusion Controlee, Associaton Euratomcea sur la F, 研究員
KAKIYAMA Ken Faculty of Engineering, Hiroshima University, 工学部, 助教授 (40112180)
TACHON J Department de Recherches sur la Fusion Controlee, Associaton Euratomcea sur la F, 研究員
ITO Yoshihumi Plasma Physics Laboratory, Faculty of Engineering, Osaka University, 工学部, 助教授 (00127185)
MASAMUNE Sadao Faculty of Engineering and Design, Kyoto Institute of Technology, 工芸学部, 助教授 (00157182)
MOHRI Akihiro College of Liberal Art and Science, Kyoto University, 教養部, 教授 (10025926)
KADOTA Kiyoshi Plasma Science Center, Nagoya University, プラズマ科学センター, 助教授 (60093019)
OZAKI Tetsu National Institute for Fusion Science, 助手 (50183033)
OGAWA Yuichi National Institute for Fusion Science, 助手 (90144170)
OOYABU Nobuyoshi National Institute for Fusion Science, 助教授 (60203949)
MOTOJIMA Oasamu National Institute for Fusion Science, 教授 (60109056)
YAMAMOTO Junya National Institute for Fusion Science, 教授 (00029208)
IKAGAMI Hideo National Institute for Fusion Science, 教授 (10023699)
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| Project Period (FY) |
1988 – 1990
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| Project Status |
Completed (Fiscal Year 1990)
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| Budget Amount *help |
¥13,800,000 (Direct Cost: ¥13,800,000)
Fiscal Year 1990: ¥4,800,000 (Direct Cost: ¥4,800,000)
Fiscal Year 1989: ¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 1988: ¥3,000,000 (Direct Cost: ¥3,000,000)
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| Keywords | Tokamak / Edge Plasma / Electron Density Profile / Plasma Diagnostics / Ergodic Layer / Beam Probe Spectroscopy / Spectral Line Intensity Ratio / Ergodic Divertor |
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| Research Abstract |
Applicability of the beam probe spectroscopy to the edge plasms diagnostics on the Tore Supra tokamak in Cadarache, France, has been investigated. It is expected that electron density as high as 10^<14> cm^<-3> will be produced by operating an ergodic divertor in edge part of Tore Supra, and a diagnostic technique which could measure such high density with spatial resolution as high as 1cm is required to be developed. The beam probe spectroscopy which has originally been developed in our research group utilizes various atomic and radiative processes between plasma particles and beam atoms injected, and is used for plasma diagnostics. It has been found through the discussion with research group in Cadarache that the use of neutral lithium beam originally planned is not proper for such a high electron density measurement because of strong attenuation of the beam injected, but the measurement of the intensity ratio of two spectral lines corresponding to different transitions from the neutral hydrogen or helium beam injected into the plasma will give an electron density profile, since the intensity ratio is a function of local electron density. It is, however, necessary to prepare the light detection system in the Vacuum Ultraviolet region. In the case of using hydrogen, an existing diagnostic beam of hydrogen on Tore Supra could be utilized, but it will be necessary to prepare a new diagnostic beam for helium. A doped beam of helium in the existing hydrogen diagnostic beam would also be applicable. A design of the diagnostic system for electron density profile in the Tore Supra edge plasma is going to be completed.
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