Results 71 to 80 of about 670 (162)

Self-consistent modelling of a liquid metal box-type divertor with application to the Divertor Tokamak Test (DTT) facility: Li vs. Sn [PDF]

, 2019
In the present work a model for a liquid metal (LM) box-type divertor is presented, aimed at including the most relevant aspects of its rich physics, as well as some engineering elements.
Mazzitelli, Giuseppe, Nallo, Giuseppe Francesco, Savoldi, Laura, Subba, Fabio, Zanino, Roberto   +4 more
core   +1 more source

Hybrid model predictive control techniques for safety factor profile and stored energy regulation while incorporating NBI constraints

Nuclear Fusion
A novel hybrid Model Predictive Control (MPC) algorithm has been designed for simultaneous safety factor ( q ) profile and stored energy ( w ) control while incorporating the pulse-width-modulation constraints associated with the neutral beam injection ...
Brian Leard, Zibo Wang, Sai Tej Paruchuri, Eugenio Schuster, Tariq Rafiq   +4 more
doaj   +1 more source

Liquid lithium as divertor material to mitigate severe damage of nearby components during plasma transients. [PDF]

Sci Rep, 2022
Sizyuk V, Hassanein A.
europepmc   +1 more source

DECAF cross-device characterization of tokamak disruptions indicated by abnormalities in plasma vertical position and current

Nuclear Fusion
Abnormal (deviating from the target) variations in the plasma vertical position Z and current $I_\textrm{p}$ (such as vertical displacements, transient $I_\textrm{p}$ ‘spikes’ and quenches) constitute common elements of a disruption, a phenomenon that is
V. Zamkovska, S.A. Sabbagh, M. Tobin, J.W. Berkery, J.D. Riquezes, Y.S. Park, K. Erickson, J. Butt, J.G. Bak, J. Kim, K.D. Lee, J. Ko, S.W. Yoon, C.J. Ham, L. Kogan, the MAST Upgrade Team   +15 more
doaj   +1 more source

Recent progress in the interaction between energetic particles and tearing modes. [PDF]

Natl Sci Rev, 2022
Cai H, Li D.
europepmc   +1 more source

Feedforward equilibrium trajectory optimization with GSPulse

Nuclear Fusion
One of the common tasks required for designing new plasma scenarios or evaluating capabilities of a tokamak is to design the desired equilibria using a Grad-Shafranov (GS) equilibrium solver.
J.T. Wai, M.D. Boyer, D.J. Battaglia, A. Merle, F. Carpanese, F. Felici, M. Kochan, E. Kolemen   +7 more
doaj   +1 more source

Publisher Correction: Effect of deuterium irradiation on graphite boronized in the NSTX-U tokamak. [PDF]

Sci Rep, 2020
Bedoya F, Allain JP, Dominguez-Gutierrez FJ, Krstic PS.   +3 more
europepmc   +1 more source

Determining the validity of tokamak perturbed equilibrium modeling using nonlinear equilibria

Nuclear Fusion
The prediction of perturbed equilibrium models for tokamaks with small non-axisymmetric fields is strongly dependent on which reference frame for axisymmetry is assumed.
J. Halpern, N.C. Logan, E. Paul, C. Paz-Soldan   +3 more
doaj   +1 more source

Model-based Optimization and Feedback Control of the Current Density Profile Evolution in NSTX-U [PDF]

Unlike nuclear fission in present nuclear power plants, where energy is generated by splitting heavy atoms like uranium, nuclear fusion generates energy by fusing light nuclei like hydrogen isotopes under high-temperature and high-pressure conditions, at
Ilhan, Zeki Okan
core   +1 more source

Plasma self-driven current in tokamaks with magnetic islands

Nuclear Fusion
Magnetic island perturbations may cause a reduction in plasma self-driven current that is needed for tokamak operation. A novel effect on tokamak self-driven current revealed by global gyrokinetic simulations is due to magnetic-island-induced 3D electric
W.X. Wang, M.G. Yoo, E.A. Startsev, S. Kaye, S. Ethier, J. Chen   +5 more
doaj   +1 more source