Results 11 to 20 of about 3,423,360 (305)

Scrape off layer profiles interpreted with filament dynamics [PDF]

Nuclear Fusion, 2016
A theoretical framework is developed to link the density profiles in the scrape off layer (SOL) with the fluctuations (filaments) that generate them. The framework is based on the dynamics of independent filaments and their statistical behaviour and can ...
Omotani, John, Militello, F.,, Militello, F., Omotani, John,   +3 more
core   +3 more sources

Computations of intermittent transport in scrape-off layer plasmas [PDF]

Physical Review Letters, 2004
Two-dimensional fluid simulations of interchange turbulence for geometry and parameters relevant for the scrape-off layer of magnetized plasmas are presented.
Garcia, O.E., Naulin, V., Nielsen, A.H., Juul Rasmussen, J.   +3 more
core   +3 more sources

Computational Modelling of a Purely Neoclassical Scrape-off Layer

Contributions to Plasma Physics, 2002
We study the Scrape-off Layer of ASDEX Upgrade in a scenario where the neoclassical transport phenomena are dominant with respect to the anomalous contributions. To represent such a neoclassical scenario, we implemented the expressions for the energy and
Schneider, R., Kuhn, S., Bonnin, X., R. SCHNEIDER, Subba, F., X. BONNIN, Subba, Fabio, S. KUHN   +7 more
core   +4 more sources

Effect of local wall clearance on scrape-off layer electron density profiles in ASDEX Upgrade

Nuclear Fusion
The plasma electron density is measured with multiple diagnostics in the scrape-off layer of the ASDEX Upgrade tokamak. The recorded values are typically in good agreement in the case of exponentially decaying profiles at low densities, but they become ...
B. Tal, E. Wolfrum, M. Bernert, G. Birkenmeier, D. Brida, R. Fischer, G. Grenfell, M. Griener, O. Grover, J. Hobirk, B. Kurzan, T. Lunt, P.A. Schneider, N. Vianello, D. Wendler, the ASDEX Upgrade Team, the EUROfusion Tokamak Exploitation Team   +16 more
doaj   +2 more sources

On the interaction of scrape off layer filaments [PDF]

Plasma Physics and Controlled Fusion, 2017
Abstract The interaction of L-mode and inter-ELM scrape-off layer (SOL) filaments is investigated by simulating the dynamics of two seeded density perturbations with different initial separation. A numerical campaign of 2D and 3D simulations is presented to explore the effect that different filaments ...
F Militello, B Dudson, L Easy, A Kirk, P Naylor   +4 more
openaire   +2 more sources

ELM transport in the JET scrape-off layer [PDF]

Nuclear Fusion, 2007
This contribution summarizes a number of aspects of the experimental and modelling programme at JET aimed at improving the characterization and understanding of edge localized mode (ELM) transport in the scrape-off layer (SOL). Divertor target energy deposition asymmetries favouring the inner target for the ion B × ∇B drift directed towards the X-point
Pitts, R. A., Andrew, P., Arnoux, G., Eich, T., Fundamenski, W., Huber, A., Silva, C., Tskhakaya, D.   +7 more
openaire   +2 more sources

Blob interactions in 2D scrape-off layer simulations [PDF]

Physics of Plasmas, 2020
Interaction of coherent structures known as blobs in the scrape-off layer of magnetically confined plasmas is investigated. Isolated and interacting seeded blobs, as well as full plasma turbulence, are studied by two-dimensional numerical simulations.
G. Decristoforo, F. Militello, T. Nicholas, J. Omotani, C. Marsden, N. Walkden, O. E. Garcia   +6 more
openaire   +3 more sources

Reduction of transport due to magnetic shear in gyrokinetic simulations of the scrape-off layer [PDF]

, 2021
The effect of varying magnetic shear on scrape-off layer turbulence and profiles is studied via electromagnetic gyrokinetic simulations of a helical scrape-off layer model. We develop a model helical geometry with magnetic shear and a corresponding field-
Mandell, N. R., Hammett, G. W., Hakim, A., Francisquez, M., A Hakim, M Francisquez, G W Hammett, N R Mandell   +7 more
core   +1 more source

Effect of Scrape-Off-Layer Current on Reconstructed Tokamak Equilibrium [PDF]

, 2017
Methods are described that extend fields from reconstructed equilibria to include scrape-off-layer current through extrapolated parametrized and experimental fits.
Jepson, J. R., J. D. Hanson, Kruger, Scott E., J. R. King, Hanson, James D., Held, Eric D., R. J. Groebner, Groebner, Richard J., J. R. Jepson, King, J. R., J. D. Hebert, E. D. Held, Hebert, J. D., S. E. Kruger   +13 more
core   +1 more source

SOL parallel momentum loss in ASDEX Upgrade and comparison with SOLPS

Nuclear Materials and Energy, 2017
An H-mode database of ASDEX Upgrade plasmas with improved diagnostics for a variety of different plasma conditions has been analysed to study the momentum removal in the Scrape-Off Layer (SOL).
I. Paradela Pérez, A. Scarabosio, M. Groth, M. Wischmeier, F. Reimold, ASDEX Upgrade Team   +5 more
doaj   +1 more source