New 20-Channel Diagnostic for Angle-Resolved Fast Particles Measurements in LHD
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概要
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A new multi-channel diagnostic for fast particles has been developed and successfully tested on the Large Helical Device (LHD) during 2005-2006 experimental campaign. The number of simultaneously used channels was significantly improved from 2 to 20 channels and additional improvements for noise reduction have been made. Same time location of the diagnostic has been changed that allowed one to make measurements in a much wider range of pitch angles from perpendicular to tangential (90-160 degrees). All these improvements allow one to make time, energy, and angle-resolved measurements of charge exchange neutral particles in a single plasma discharge and to check the presence of fast particles loss-cones from LHD plasma in different heating regimes. This new diagnostic can be a very helpful and powerful tool in studying of fast particle distribution in such a complex helical plasma geometry like the one of LHD. Example data from plasma discharges are presented.
- 社団法人 プラズマ・核融合学会の論文
著者
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SUDO Shigeru
National Insitute for Fusion Science
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GONCHAROV Pavel
National Institute for Fusion Science
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OZAKI Tetsuo
National Institute for Fusion Science
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VESHCHEV Evgeny
Graduate University for Advanced Studies, Hayama 240-0193, Japan
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