Results 91 to 100 of about 12,695 (229)

Model-predictive kinetic control with data-driven models on EAST

Nuclear Fusion
In this work, model-predictive control (MPC) was combined for the first time with singular perturbation theory, and an original plasma kinetic control method based on extremely simple data-driven models and a two-time-scale MPC algorithm has been ...
D. Moreau, S. Wang, J.P. Qian, Q. Yuan, Y. Huang, Y. Li, S. Ding, H. Du, X. Gong, M. Li, H. Liu, Z. Luo, L. Zeng, E. Olofsson, B. Sammuli, J.F. Artaud, A. Ekedahl, E. Witrant   +17 more
doaj   +1 more source

OPTIMUM PLASMA STATES FOR NEXT STEP TOKAMAKS [PDF]

, 2002
OAK A271 OPTIMUM PLASMA STATES FOR NEXT STEP TOKAMAKS. The dependence of the ideal ballooning {beta} limit on aspect ratio, A, and elongation {kappa} is systematically explored for nearly 100% bootstrap current driven tokamak equilibria in a wide range ...
STAMBAUGH,RD, LIN-LIU,YR
core  

Observation of stationary filaments with resonant magnetic perturbations in NSTX

Nuclear Fusion
The application of resonant magnetic perturbations (RMPs) induces striated heat fluxes on the divertor plate in tokamaks. These striated heat fluxes were previously considered strike point splitting by the intersection between the divertor and predicted ...
K.F. Gan, E.D. Fredrickson, J.W. Berkery, S. Munaretto, A. Kleiner, M. Lampert, J.-K. Park, R. Maingi, A.G. McLean, T.K. Gray, B.D. Wirth   +10 more
doaj   +1 more source

ICRF heating in large tokamaks

, 1976
When projected to PLT-size tokamaks, the preliminary results for ..omega.. approx. 2..omega../sub ci/ fast wave heating obtained in the ST and ATC tokamaks indicate that very efficient heating of the central plasma region as opposed to the surface region
Hosea, J. C.
core  

Towards a High Order Fourier-SEM Solver of Fluid Models in Tokamaks

, 2013
International audienceWe investigate a fluid modeling approach to describe the plasma behavior in tokamaks. For the numerical approximation, we use a high order method based on Fourier expansions in the toroidal direction and the spectral element method (
S. Minjeaud, Pasquetti, Richard, R. Pasquetti, Bonnement, Audrey, Minjeaud, Sebastian, A. Bonnement   +5 more
core   +1 more source

Continuum self-organized-criticality model of turbulent heat transport in tokamaks

, 2003
A simple generic one-dimensional continuum model of driven dissipative systems is proposed to explain self-organized bursty heat transport in tokamaks. Extensive numerical simulations of this model reproduce many features of present day tokamaks such as ...
Tangri, Varun, Singh, Raghvendra, Das, Amita, Kaw, Predhiman   +3 more
core   +1 more source

Microtearing modes in spherical and conventional tokamaks

, 2013
The onset and characteristics of microtearing modes (MTM) in the core of spherical (NSTX) and conventional tokamaks (ASDEX Upgrade and JET) are studied through local linear gyrokinetic simulations with GYRO (Candy and Belli 2011 General Atomics Report GA-
Moll\ue9n, Albert, Pusztai, Istvan,, Mollén, Albert,, F\ufcl\uf6p, T\ufcnde, Moradi, Sara, Moradi, Sara,, Pusztai, Istvan, W, Guttenfelder,, W, Guttenfelder, Fülöp, Tünde,   +9 more
core   +1 more source

Pressure and inductance effects on vertical stability of shaped tokamaks

CRPPSPCProceedings International Workshop on Steady-State Tokamaks, Princeton, USA, January 1993, Vol.
D.J., Ward, Hofmann, F., Bondeson, A.
core  

Toward tokamaks with higher densities?

, 2020
Recently, it was shown that the density limit is a radiative one due to impurities in the three main magnetic configurations: the tokamak, the RFP, and the stellarator.
Escande, Dominique, F
core  

Fokker-Planck/Transport model for neutral beam driven tokamaks [PDF]

, 1980
The application of nonlinear Fokker-Planck models to the study of beam-driven plasmas is briefly reviewed. This evolution of models has led to a Fokker-Planck/Transport (FPT) model for neutral-beam-driven Tokamaks, which is described in detail.
Killeen, J., Mirin, A. A., McCoy, M. G.
core