Results 21 to 30 of about 922 (184)

Poloidal localization of the explosive onset of edge localized modes

Nuclear Fusion, 2023
In ASDEX Upgrade lower single null H-mode plasmas, the onset of the explosive phase of Edge Localized Modes (ELMs) is poloidally localized in the X-point/outer strike point (X/OSP) region. From this location, ELMs develop on average towards the low-field
E. Trier, P. Hennequin, M. Maraschek, L. Giannone, B. Vanovac, the ASDEX Upgrade Team   +5 more
doaj   +1 more source

Thermal quench induced by a composite pellet-produced plasmoid

Nuclear Fusion, 2023
Injecting shattered pellets is the critical concept of the envisaged ITER disruption mitigation system (DMS). Rapid deposition of large amounts of material should presumably result in controlled cooling of the entire plasma.
Pavel Aleynikov, Alistair M. Arnold, Boris N. Breizman, Per Helander, Aleksey Runov   +4 more
doaj   +1 more source

CREATE-FXB, a Fixed Boundary Code Based on Finite Element Methods for the Solution of the Grad–Shafranov Equation and Optimization of Equilibrium Currents

Energies
CREATE-FXB is a Finite Element Method solver specifically developed to address the fixed boundary problem, namely the determination of the Magnetohydrodynamic equilibrium of an axisymmetric plasma confined within a toroidal nuclear fusion device ...
Raffaele Albanese, Marco Neri, Pasquale Zumbolo   +2 more
doaj   +1 more source

High-order coupling of shear and sonic continua in JET plasmas

Nuclear Fusion, 2023
A recent model coupling the shear-Alfvén and acoustic continua, which depends strongly on the equilibrium shaping and on elongation in particular, is employed to explain the properties of Alfvénic activity observed on JET plasmas below but close to the ...
Paulo Rodrigues, Duarte Borba, Francesca Cella, Rui Coelho, Jorge Ferreira, António Figueiredo, Mervi Mantsinen, Fernando Nabais, Sergei Sharapov, Paula Sirén, JET Contributors   +10 more
doaj   +1 more source

The physics of an ignited tokamak [PDF]

Fusion Engineering and Design, 1991
A next step device which can demonstrate long burn with a high probability of success is possible, without speculating on the accumulation of favorable effects and ignoring the other ones. From the data base available today this appears possible only with large devices such as NET, ITER or JIT.
openaire   +1 more source

Scalings for tokamak energy confinement [PDF]

Nuclear Fusion, 1990
On the basis of an analysis of the ITER L-mode energy confinement database, two new scaling expressions for tokamak L-mode energy confinement are proposed, namely a power law scaling and an offset-linear scaling. The analysis indicates that the present multiplicity of scaling expressions for the energy confinement time TE in tokamaks (Goldston, Kaye ...
Yushmanov, P., Takizuka, T., Riedel, K., Kardaun, O., Cordey, J., Kaye, S., Post, D.   +6 more
openaire   +3 more sources

Observation of long-radial-range-correlation in turbulence in high-collisionality high-confinement plasmas on DIII-D

Nuclear Fusion, 2023
We report on the observation of spatially asymmetric turbulent structures with a long radial correlation length in the core of high-collisionality H -mode plasmas on DIII-D tokamak.
R. Hong, T.L. Rhodes, P.H. Diamond, Y. Ren, L. Zeng, X. Jian, K. Barada, G. Wang, W.A. Peebles   +8 more
doaj   +1 more source

L-H transition studies in tritium and deuterium–tritium campaigns at JET with Be wall and W divertor

Nuclear Fusion, 2023
The recent deuterium–tritium campaign in JET-ILW (DTE2) has provided a unique opportunity to study the isotope dependence of the L-H power threshold in an ITER-like wall environment (Be wall and W divertor).
E.R. Solano, G. Birkenmeier, C. Silva, E. Delabie, J.C. Hillesheim, A. Baciero, I. Balboa, M. Baruzzo, A. Boboc, M. Brix, J. Bernardo, C. Bourdelle, I.S. Carvalho, P. Carvalho, C.D. Challis, M. Chernyshova, A. Chomiczewska, R. Coelho, I. Coffey, T. Craciunescu, E. de la Cal, E. de la Luna, R. Dumont, P. Dumortier, M. Fontana, J.M. Fontdecaba, L. Frassinetti, D. Gallart, J. Garcia, C. Giroud, W. Gromelski, R.B. Henriques, J. Hall, A. Ho, L.D. Horton, L. Horvath, P. Jacquet, I. Jepu, E. Joffrin, A. Kappatou, D.L. Keeling, D.B. King, V.G. Kiptily, K.K. Kirov, D. Kos, E. Kowalska-Strzęciwilk, M. Lennholm, E. Lerche, E. Litherland-Smith, A. Loarte, B. Lomanowski, P.J. Lomas, C.F. Maggi, J. Mailloux, M.J. Mantsinen, M. Maslov, A.G. Meigs, I. Monakhov, R.B. Morales, A.H. Nielsen, D. Nina, C. Noble, E. Pawelec, M. Poradzinski, G. Pucella, P. Puglia, D. Réfy, J. Juul Rasmussen, E. Righi, F.G. Rimini, T. Robinson, M. Sertoli, S.A. Silburn, G. Sips, P. Sirén, Ž. Štancar, H.J. Sun, G. Szepesi, D. Taylor, E. Tholerus, B. Thomas, G. Verdoolaege, P. Vincenzi, B. Viola, N. Vianello, T. Wilson, JET Contributors   +86 more
doaj   +1 more source

Coupling Fluid Neutrals to Gyrokinetic Plasma Dynamics for Edge and SOL Turbulence Simulations

Contributions to Plasma Physics, EarlyView.
ABSTRACT Accurate modeling of turbulent transport in magnetic confinement fusion devices requires extending first‐principles gyrokinetic simulations from the core to the edge and scrape‐off layer (SOL), where additional physics—particularly plasma–neutrals interactions—must be included.
Sabine Ogier‐Collin, Philipp Ulbl, Wladimir Zholobenko, Frank Jenko   +3 more
wiley   +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