Transport and turbulence studies in the T-10 tokamak
Transport and turbulence studies in the T-10 tokamak
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T-10 托卡马克中的传输和湍流研究
DOI：
10.1088/0029-5515/43/12/010
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发表时间：
2003
期刊：
影响因子：
3.3
通讯作者：
M. Ossipenko
中科院分区：
文献类型：
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作者：
M. Ossipenko
在T-10托卡马克装置上，利用电子回旋共振加热（ECRH）研究了向改进约束区的过渡。得到了有和没有内输运势垒（ITB）的H模区，并进行了研究。通过功率增加、弹丸注入和偏置获得H模。在颗粒增强的限制制度的限制时间是30%以上的自发H模式。在偏置实验中，获得了高达1.55的能量约束时间的增强因子。结果表明，安全系数q曲线的细微变化使我们能够仅获得ITB或外部转运屏障，或两者，其他条件大致相似。研究了在强吹气和ECRH条件下，密度超过格林沃尔德极限的区域中的整体禁闭。为了确定负责运输的湍流的类型，欧姆和ECRH制度与安全系数的变化在限制器qL和气体吞吐被认为是。沿小半径沿着观察到两个具有不同湍流特性的区域。
Transitions to the improved confinement regimes were studied in the T-10 tokamak with electron cyclotron resonance heating (ECRH). The H-mode regime with and without internal transport barrier (ITB) was obtained and studied. The H-mode was obtained by power increase, pellet injection and biasing. The confinement time in the pellet enhanced confinement regime is 30% higher than that in the spontaneous H-mode. In biasing experiments an enhancement factor of up to 1.55 was obtained for the energy confinement time. It was shown that subtle changes in the safety factor q profile allow us to obtain either ITB or external transport barrier only, or both of them, other conditions being approximately similar. The global confinement in the regime with the density above the Greenwald limit under strong gas-puffing and ECRH was investigated. To identify the type of turbulence responsible for transport, the Ohmic and ECRH regimes with variation of safety factor at the limiter qL and gas puffing were considered. Two regions were observed along the minor radius with different turbulence properties.