We have numerically investigate the dependence of pedestal properties such as the pedestal height and the pedestal width on the pressure gradient ( ) in the connection region. We use MISHKA, an ideal MHD stability code and EPED1, a predictive model of the edge pedestal to analyze the edge stability and predict its structure. As a result, improvement of pedestal properties and stability can be achieved by reducing . Also, the pedestal width and height can be increased by shafranov shift. From this result, we suggest the strategy to improve the edge pedestal. It is possible to increase the pedestal height and width by increasing the core pressure and adjusting the peaking of the core pressure profile.

中文翻译：

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连接区压力梯度对边缘基座稳定性的影响

我们已经数值研究了基座属性（例如基座高度和基座宽度）对连接区域中压力梯度 ( ) 的依赖性。我们使用理想的 MHD 稳定性代码 MISHKA 和边缘基座的预测模型 EPED1 来分析边缘稳定性并预测其结构。因此，可以通过减少 来实现基座性能和稳定性的改善。此外，底座宽度和高度可以通过 shafranov shift 增加。根据这个结果，我们提出了改善边缘基座的策略。可以通过增加岩心压力和调整岩心压力曲线的峰值来增加基座的高度和宽度。