Discharges in the JET tokamak where the safety factor profile is identified as the critical factor for triggering internal transport barriers

被引：44

作者：

Eriksson, LG ^{[1
]}

Fourment, C ^{[1
]}

Fuchs, V ^{[1
]}

Litaudon, X ^{[1
]}

Challis, CD ^{[1
]}

Crisanti, F ^{[1
]}

Esposito, B ^{[1
]}

Garbet, X ^{[1
]}

Giroud, C ^{[1
]}

Hawkes, N ^{[1
]}

Maget, P ^{[1
]}

Mazon, D ^{[1
]}

Tresset, G ^{[1
]}

机构：

[1] CEN Cadarache, EURATOM Assoc, CEA Fus Controlee, F-13108 St Paul Les Durance, France

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.88.145001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Joint European Torus discharges which demonstrate the critical role the safety factor profile, q, can play in the formation of internal transport barriers (ITB) are examined. In these discharges, the target parameters, including the E x B flows, were kept virtually the same, except for the q pro le. In a discharge with a nonmonotonic q, an ITB was triggered whereas a discharge with monotone q made no such transition. Thus, there is strong evidence that the q pro le was the critical factor for the triggering of an ITB. Possible interpretations of this finding are discussed.

引用

页码：145001/1 / 145001/4

页数：4

共 39 条

[21] Control of the tokamak safety factor profile with time-varying constraints using MPC
Maljaars, E.
Felici, F.
de Baar, M. R.
van Dongen, J.
Hogeweij, G. M. D.
Geelen, P. J. M.
Steinbuch, M.
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[22] Optimization of the safety factor profile for high noninductive current fraction discharges in DIII-D
Ferron, J. R.
Holcomb, C. T.
Luce, T. C.
Politzer, P. A.
Turco, F.
White, A. E.
DeBoo, J. C.
Doyle, E. J.
Hyatt, A. W.
La Haye, R. J.
Murakami, M.
Petrie, T. W.
Petty, C. C.
Rhodes, T. L.
Zeng, L.
NUCLEAR FUSION, 2011, 51 (06)
[23] Collisionality and safety factor scalings of H-mode energy transport in the MAST spherical tokamak
Valovic, M.
Akers, R.
de Bock, M.
McCone, J.
Garzotti, L.
Michael, C.
Naylor, G.
Patel, A.
Roach, C. M.
Scannell, R.
Turnyanskiy, M.
Wisse, M.
Guttenfelder, W.
Candy, J.
NUCLEAR FUSION, 2011, 51 (07)
[24] Nonlinear Local Control of the Safety-Factor-Profile Gradient at Moving Spatial Locations in Tokamak Plasmas
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[25] Implementation and Initial Testing of a Model Predictive Controller for Safety Factor Profile and Energy Regulation in the EAST Tokamak
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Wang, Hexiang
Schuster, Eugenio
Luo, Zhengping
Huang, Yao
Yuan, Qiping
Xiao, Bingjia
Humphreys, David
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[26] Influence of safety factor profile on energetic particle driven m/n > 1 instabilities in tokamak plasmas
X. Q. Wang
X. Su
Z. Li
Y. Xu
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[27] Runaway electron studies in the startup phase of very low edge safety factor (qa) (VLQ) discharges in the SINP tokamak
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Pal, R
Lahiri, S
Mukhopadhyay, S
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[28] Safety factor profile shape and the ideal magnetohydrodynamic stability of n = 1 internal modes
Detragiache, P
PLASMA PHYSICS AND CONTROLLED FUSION, 1998, 40 (08) : 1501 - 1512
[29] Transition between internal transport barriers with different temperature-profile curvatures in JT-60U tokamak plasmas
Ida, K.
Sakamoto, Y.
Takenaga, H.
Oyama, N.
Itoh, K.
Yoshinuma, M.
Inagaki, S.
Kobuchi, T.
Isayama, A.
Suzuki, T.
Fujita, T.
Matsunaga, G.
Koide, Y.
Yoshida, M.
Ide, S.
Kamada, Y.
PHYSICAL REVIEW LETTERS, 2008, 101 (05)
[30] Safety factor scaling of energy transport in L-mode plasmas on the DIII-D tokamak
Petty, CC
Kinsey, JE
Luce, TC
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