Integrated magnetic and kinetic control of advanced tokamak plasmas on DIII-D based on data-driven models

被引：33

作者：

Moreau, D. ^{[1
]}

Walker, M. L. ^{[2
]}

Ferron, J. R. ^{[2
]}

Liu, F. ^{[1
]}

Schuster, E. ^{[3
]}

Barton, J. E. ^{[3
]}

Boyer, D. ^{[3
]}

Burrell, K. H. ^{[2
]}

Flanagan, S. M. ^{[2
]}

Gohil, P. ^{[2
]}

Groebner, R. J. ^{[2
]}

Holcomb, C. T. ^{[4
]}

Humphreys, D. A. ^{[2
]}

Hyatt, A. W. ^{[2
]}

Johnson, R. D. ^{[2
]}

La Haye, R. J. ^{[2
]}

Lohr, J. ^{[2
]}

Luce, T. C. ^{[2
]}

Park, J. M. ^{[5
]}

Penaflor, B. G. ^{[2
]}

Shi, W. ^{[3
]}

Turco, F. ^{[6
]}

Wehner, W. ^{[3
]}

机构：

[1] CEA, IRFM, F-13108 St Paul Les Durance, France

[2] Gen Atom Co, San Diego, CA 92186 USA

[3] Lehigh Univ, Bethlehem, PA 18015 USA

[4] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[5] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[6] Columbia Univ, New York, NY 10027 USA

来源：

NUCLEAR FUSION | 2013年 / 53卷 / 06期

关键词：

PROFILE;

D O I：

10.1088/0029-5515/53/6/063020

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：

The first real-time profile control experiments integrating magnetic and kinetic variables were performed on DIII-D in view of regulating and extrapolating advanced tokamak scenarios to steady-state devices and burning plasma experiments. Device-specific, control-oriented models were obtained from experimental data using a generic two-time- scale method that was validated on JET, JT-60U and DIII-D under the framework of the International Tokamak Physics Activity for Integrated Operation Scenarios (Moreau et al 2011 Nucl. Fusion 51 063009). On DIII-D, these data-driven models were used to synthesize integrated magnetic and kinetic profile controllers. The neutral beam injection (NBI), electron cyclotron current drive (ECCD) systems and ohmic coil provided the heating and current drive (H& CD) sources. The first control actuator was the plasma surface loop voltage (i. e. the ohmic coil), and the available beamlines and gyrotrons were grouped to form five additional H& CD actuators: co-current on-axis NBI, co-current off-axis NBI, counter-current NBI, balanced NBI and total ECCD power from all gyrotrons (with off-axis current deposition). Successful closed-loop experiments showing the control of (a) the poloidal flux profile, Psi(x), (b) the poloidal flux profile together with the normalized pressure parameter, beta(N), and (c) the inverse of the safety factor profile, (i) over bar (x) = 1/q(x), are described.

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