Pedestal conditions for small ELM regimes in tokamaks

被引:96
作者
Oyama, N.
Gohil, P.
D Horton, L.
Hubbard, A. E.
Hughes, J. W.
Kamada, Y.
Kamiya, K.
Leonard, A. W.
Loarte, A.
Maingi, R.
Saibene, G.
Sartori, R.
Stober, J. K.
Suttrop, W.
Urano, H.
West, W. P.
机构
[1] JAEA Naka, Naka, Ibaraki 3110193, Japan
[2] Gen Atom Co, San Diego, CA 92186 USA
[3] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany
[4] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA
[5] EFDA Close Support Unit Garching, Garching, Germany
[6] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
关键词
D O I
10.1088/0741-3335/48/5A/S16
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
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.
引用
收藏
页码:A171 / A181
页数:11
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