Fusion plasma performance and confinement studies on JT-60 and JT-60U

被引：36

作者：

Kamada, Y ^{[1
]}

Fujita, T ^{[1
]}

Ishida, S ^{[1
]}

Kikuchi, M ^{[1
]}

Ide, S ^{[1
]}

Takizuka, T ^{[1
]}

Shirai, H ^{[1
]}

Koide, Y ^{[1
]}

Fukuda, T ^{[1
]}

Hosogane, N ^{[1
]}

Tsuchiya, K ^{[1
]}

Hatae, T ^{[1
]}

Takenaga, H ^{[1
]}

Sato, M ^{[1
]}

Nakamura, H ^{[1
]}

Naito, O ^{[1
]}

Asakura, N ^{[1
]}

Kubo, H ^{[1
]}

Higashijima, S ^{[1
]}

Miura, Y ^{[1
]}

Yoshino, R ^{[1
]}

Shimizu, K ^{[1
]}

Ozeki, T ^{[1
]}

Hirayama, T ^{[1
]}

Mori, M ^{[1
]}

Sakamoto, Y ^{[1
]}

Kawano, Y ^{[1
]}

Isayama, A ^{[1
]}

Ushigusa, K ^{[1
]}

Ikeda, Y ^{[1
]}

Kimura, H ^{[1
]}

Fujii, T ^{[1
]}

Imai, T ^{[1
]}

Nagami, M ^{[1
]}

Takeji, S ^{[1
]}

Oikawa, T ^{[1
]}

Suzuki, T ^{[1
]}

Nakano, T ^{[1
]}

Oyama, N ^{[1
]}

Sakurai, S ^{[1
]}

Konoshima, S ^{[1
]}

Sugie, T ^{[1
]}

Tobita, K ^{[1
]}

Kondoh, T ^{[1
]}

Tamai, H ^{[1
]}

Neyatani, Y ^{[1
]}

Sakasai, A ^{[1
]}

Kusama, Y ^{[1
]}

Itami, K ^{[1
]}

Shimada, M ^{[1
]}

机构：

[1] Japan Atom Energy Res Inst, Naka Fus Res Estab, Naka, Ibaraki 31101, Japan

来源：

FUSION SCIENCE AND TECHNOLOGY | 2002年 / 42卷 / 2-3期

关键词：

confinement; fusion performance; transport;

D O I：

10.13182/FST02-A227

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Fusion plasma performance and confinement studies on JT-60 and JT-60U are reviewed. With the main aim of providing a physics basis for ITER and the steady-state tokamak reactors, JT-60/JT-60U has been developing and optimizing the operational concepts, and extending the discharge regimes toward sustainment of high integrated performance in the reactor relevant parameter regime. In addition to achievement of high fusion plasma performances such as the equivalent break-even condition (Q(DT)(eq) up to 1.25) and a high fusion triple product n(D)(0)tau(E)T(i)(0) = 1.5 X 10(21) m(-3) skeV, JT-60U has demonstrated the integrated performance of high confinement, high beta(N), full non-inductive current drive with a large fraction of bootstrap current. These favorable performances have been achieved in the two advanced operation regimes, the reversed magnetic shear (RS) and the weak magnetic shear (high-beta(p)) ELMy H modes characterized by both internal transport barriers (ITB) and edge transport barriers (ETB). The key factors in optimizing these plasmas towards high integrated performance are control of profiles of current, pressure, rotation, etc. utilizing a variety of heating, current drive, torque input, and particle control capabilities and high triangularity operation. As represented by discovery of ITBs (density ITB in the central pellet mode, ion temperature ITB in the high-beta(p) mode, and electron temperature ITB in the reversed shear mode), confinement studies in JT-60/JT-60U have been emphasizing freedom and also restriction of radial profiles of temperature and density. In addition to characterization of confinement and analyses of transport properties of the OH, the L-mode, the H-mode, the pellet mode, the high-beta(p) mode, and the RS mode, JT-60U has clarified formation conditions, spatial structures and dynamics of edge and internal transport barriers, and evaluated effects of repetitive MHD events on confinement such as sawteeth and ELMs. Through these studies, JT-60U has demonstrated applicability of the high confinement modes to ITER and the steady-state tokamak reactors.

引用

页码：185 / 254

页数：70

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