著者

中村 幸治 芳野 隆治 Robert GRANETS Gabriella PAUTASSO Otto GRUBER Stephen JARDIN

出版者

社団法人 プラズマ・核融合学会

雑誌

プラズマ・核融合学会誌 (ISSN:09187928)

巻号頁・発行日

vol.78, no.4, pp.347-355, 2002 (Released:2005-12-08)

参考文献数

31

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Validation studies of a neutrally balanced vertical plasma position, so-called ”neutral point”, have been carried out by computational simulations and experiments under trilateral Japan-US-EU collaborations. It was clarified that the neutral point, where VDEs (Vertical Displacement Events) are hardly occurred, does exit in the Alcator C-Mod and ASDEX-Upgrade tokamaks as well as the JT-60U, consistent with the simulations. Meanwhile, precise details of the VDE behavior exhibit their own characters according to the individual ofthe tokamaks such as an up-down asymmetry of plasma shape. Sensitivity of the neutral point to the plasma shape and current profile was also addressed in detail.