Improved Confinement Induced by Tangential CT Injection into STOR-M
Improved Confinement Induced by Tangential CT Injection into STOR-M
复制标题
通过切向 CT 注入 STOR-M 改善约束
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
S. Sen
中科院分区：
文献类型：
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作者：
C. Xiao;J. Morelli;D. McColl;A. Hirose;S. Sen
在STOR-M托卡马克装置上，通过切向注入致密环（CT），产生了类H模放电。改进的约束相的特征在于电子密度的增加，Hα辐射能级的显著降低，边缘密度分布的陡峭化，m = 2的Mirnov振荡的抑制，以及浮置电势波动的抑制。这些特征与STOR-M中由边缘湍流加热或电极/限制器偏置引起的H模式相关。与STOR-M中的边缘湍流加热诱导的H模相反，在CT注入诱导的改善约束阶段期间，等离子体边缘和SOL处的浮置电势增加。CT与边缘托克马克等离子体之间的相互作用可能是触发H模式的原因。
H-mode like discharges have been induced by tangential compact torus (CT) injection into the STOR-M tokamak. The improved confinement phase is characterized by an increase in the electron density, significant reduction in the Hα radiation level, steepening of the edge density profile, suppression of m = 2 Mirnov oscillations, and suppression of the floating potential fluctuations. These features are similar to those associated with the H-modes induced with edge turbulent heating or by electrode/limiter biasing in STOR-M. In contrast to the edge turbulent heating induced H-mode in STOR-M, the floating potential at the plasma edge and SOL increases during the CT injection induced improved confinement phase. Interaction between CT and edge tokamak plasma may be responsible for triggering the H-mode.