Plasma Confinement Characteristics in Heliotron J——Spontaneous Change of Plasma Confinement State  

作　　者：T.Mizuuchi H.Okada K.Nagasaki S.Kobayashi S.Yamamoto F.Sano K.Kondo K.Hanatani M.Nakasuga Y.Nakamura Y.Suzuki Y.Manabe H.Shidara H.Kawazome M.Kaneko Y.Nishioka Y.Ohno T.Takamiya H.Yukimoto Y.Fukagawa Y.Morita S.Nakazawa S.Nishio K.Takahashi S.Tuboi M.Yamada K.Ohashi Y.Ijiri T.Senju K.Yaguchi K.Sakamoto K.Tohshi M.Shibano T.Obiki 

机构地区：[1]Institute of Advanced Energy,Kyoto University,Uji 611-0011,Japan [2]Graduate School of Energy Science,Kyoto University,Uji 611-0011,Japan

出　　处：《Plasma Science and Technology》2004年第4期2371-2376,共6页等离子体科学和技术(英文版)

基　　金：The project partially supported by the Grant-in-Aid for Science Research of MEXT in Japan and by the Collaboration Program of the Laboratory for Complex Energy Processes;IAE;Kyoto University

摘　　要：Spontaneous transition of the plasma confinement mode was observed in thehelical-axis heliotron device 'Heliotron J' for three different plasma heating schemes, i.e.ECH-only, NBI-only and the combination of ECH and NBI. The transition seems to occur above a certaincritical density. In addition to the confinement transition, a spontaneous shift of the hittingposition of the divertor plasma flux on the wall was observed. This shift could be related with thechange of the edge field topology caused by non-inductive toroidal currents.Spontaneous transition of the plasma confinement mode was observed in thehelical-axis heliotron device 'Heliotron J' for three different plasma heating schemes, i.e.ECH-only, NBI-only and the combination of ECH and NBI. The transition seems to occur above a certaincritical density. In addition to the confinement transition, a spontaneous shift of the hittingposition of the divertor plasma flux on the wall was observed. This shift could be related with thechange of the edge field topology caused by non-inductive toroidal currents.

关 键 词：heliotron J plasma confinement transition phenomena 

分 类 号：O531[理学—等离子体物理]