Pedestal conditions for small ELM regimes in tokamaks
Pedestal conditions for small ELM regimes in tokamaks
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DOI：
10.1088/0741-3335/48/5a/s16
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发表时间：
2006-05
影响因子：
2.2
通讯作者：
N. Oyama;P. Gohil;L. Horton;A. Hubbard;J. Hughes;Y. Kamada;K. Kamiya;A. Leonard;A. Loarte
中科院分区：
文献类型：
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作者：
N. Oyama;P. Gohil;L. Horton;A. Hubbard;J. Hughes;Y. Kamada;K. Kamiya;A. Leonard;A. Loarte
在Alcator C-Mod、ASDEX-UPGRADE、DIII-D、JET、JFT-2M、JT-60U和NSTX中，已经获得了EDA、GROWY ELM、HRS、QH-MODE、II型和V型ELM等几种具有良好约束性能的小/无ELM制度。与传统的I型ELM相比，所有这些方案都显著降低了偏滤器靶板上的瞬时ELM热负荷，ELM的能量损失小于底座储能的5%。根据无量纲基座参数的工作空间和对等离子体形状/构型的要求，根据基座条件对这些小/无ELM系统进行了总结和广泛的分类。还总结了导致小/无ELMS的边缘起伏和理想MHD稳定性活动的特征。
Several small/no ELM regimes such as EDA, grassy ELM, HRS, QH-mode, type II and V ELMs with good confinement properties have been obtained in Alcator C-Mod, ASDEX-Upgrade, DIII-D, JET, JFT-2M, JT-60U and NSTX. All these regimes show considerable reduction of instantaneous ELM heat load onto divertor target plates in contrast to conventional type I ELM, and ELM energy losses are evaluated as less than 5% of the pedestal stored energy. These small/no ELM regimes are summarized and widely categorized by their pedestal conditions in terms of the operational space in non-dimensional pedestal parameters and requirement of plasma shape/configuration. The characteristics of edge fluctuations and activities of ideal MHD stability leading to small/no ELMs are also summarized.