论文标题
Wendelstein 7-X中的轮廓构成核心湍流的抑制
Suppression of core turbulence by profile shaping in Wendelstein 7-X
论文作者
论文摘要
在Wendelstein 7-X磁性限制实验中，湍流密度波动的降低以及异常杂质扩散与等离子体密度曲线的峰值有关。这些效应与改善的限制相关，并且似乎由于新古典传输的变化很小而显然是由于异常转运的减少。观察到的湍流减少随密度梯度增加的速度与非线性陀螺仪模拟一致，并且归因于W7-X的唯一几何形状限制了被困电子模式的严重程度。
In the Wendelstein 7-X magnetic confinement experiment, a reduction of turbulent density fluctuations as well as anomalous impurity diffusion is associated with a peaking of the plasma density profile. These effects correlate with improved confinement and appear largely due to a reduction of anomalous transport as the change in neoclassical transport is small. The observed decrease of turbulent heat flux with increased density gradients is in agreement with nonlinear gyrokinetic simulations, and has been attributed to the unique geometry of W7-X that limits the severity of trapped electron modes.
