Results 51 to 60 of about 116,100 (253)

Plasma Magnetic Control in Tokamak Devices

, 2019
In tokamak experimental reactors, the magnetic control system is one of the main plasma control systems that is required, together with the density control, since the very beginning, even before first operations.
G. Tommasi
semanticscholar   +1 more source

Inferring the scrape-off layer heat flux width in a divertor with a low degree of axisymmetry

Nuclear Materials and Energy
Plasma facing components (PFCs) in the next generation of tokamak devices will operate in challenging environments, with heat loads predicted to exceed 10 MW/m2. The magnitude of these heat loads is set by the width of the channel, the ‘scrape-off layer’
C. Marsden, X. Zhang, M. Moscheni, T.K. Gray, E. Vekshina, A. Rengle, A. Scarabosio, M. Sertoli, M. Romanelli   +8 more
doaj   +1 more source

Micro-Faraday cup matrix detector for ion beam measurements in fusion plasmas

, 2019
Atomic Beam Probe (ABP) is an extension of the routinely used Beam Emission Spectroscopy (BES) diagnostic for plasma edge current fluctuation measurement at magnetically confined plasmas.
Anda, Gábor, Dunai, Dániel, Hacek, Pavel, Hegedűs, Sándor, Kádi, Jenő, Lampert, Máté, Leskó, Balázs, Nagy, Domonkos, Palánkai, Miklós, Réfy, Dániel Imre, Weinzettl, Valdimir, Zoletnik, Sándor   +11 more
core   +1 more source

A Drift-Kinetic Analytical Model for SOL Plasma Dynamics at Arbitrary Collisionality [PDF]

, 2017
A drift-kinetic model to describe the plasma dynamics in the scrape-off layer region of tokamak devices at arbitrary collisionality is derived. Our formulation is based on a gyroaveraged Lagrangian description of the charged particle motion, and the ...
Jorge, R., Loureiro, N. F., Ricci, P.
core   +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

Flux surface shaping effects on tokamak edge turbulence and flows

, 2005
Shaping of magnetic flux surfaces is found to have a strong impact on turbulence and transport in tokamak edge plasmas. A series of axisymmetric equilibria with varying elongation and triangularity, and a divertor configuration are implemented into a ...
Alexander Kendl, Bruce D. Scott, Herrmann A.   +2 more
core   +1 more source

Nonlinear stabilization of tokamak microturbulence by fast ions [PDF]

, 2013
Nonlinear electromagnetic stabilization by suprathermal pressure gradients found in specific regimes is shown to be a key factor in reducing tokamak microturbulence, augmenting significantly the thermal pressure electromagnetic stabilization.
Bourdelle, C., Citrin, J., contributors, JET-EFDA, Garcia, J., Haverkort, J. W., Hogeweij, G. M. D., Jenko, F., Johnson, T., Mantica, P., Pueschel, M. J., Told, D.   +10 more
core   +3 more sources

Compact fusion energy based on the spherical tokamak

, 2017
Tokamak Energy Ltd, UK, is developing spherical tokamaks using high temperature superconductor magnets as a possible route to fusion power using relatively small devices.
A. Sykes, A. Costley, C. Windsor, O. Asunta, G. Brittles, P. Buxton, V. Chuyanov, J. Connor, M. Gryaznevich, B. Huang, J. Hugill, A. Kukushkin, D. Kingham, A.V. Langtry, S. McNamara, J. Morgan, P. Noonan, J. Ross, V. Shevchenko, R. Slade, G. Smith   +20 more
semanticscholar   +1 more source

Edge Fluid Turbulence Simulations of Stellarators With GRILLIX

Contributions to Plasma Physics, EarlyView.
ABSTRACT The edge fluid turbulence code GRILLIX has recently been extended from axisymmetric tokamak geometries to support 3D stellarator configurations. Following successful proof‐of‐principle simulations published in Stegmeir et al., we present here a comprehensive simulation of the Wendelstein 7‐AS stellarator.
Andreas Stegmeir, Christoph Pitzal, Barnabas Csillag, Miguel Madeira, Marion Finkbeiner   +4 more
wiley   +1 more source

2D Implementation of Kinetic‐Diffusion Monte Carlo in Eiron

Contributions to Plasma Physics, EarlyView.
ABSTRACT Particle‐based kinetic Monte Carlo simulations of neutral particles are one of the major computational bottlenecks in tokamak scrape‐off layer simulations. This computational cost comes from the need to resolve individual collision events in high‐collisional regimes.
Oskar Lappi, Emil Løvbak, Thijs Steel, Giovanni Samaey   +3 more
wiley   +1 more source