Results 81 to 90 of about 311,028 (224)

Regime identification in ASDEX Upgrade [PDF]

open access: yesPlasma Physics and Controlled Fusion, 2004
The ability to recognize the transition from the L-mode to the H-mode or from the H-mode to the improved H-mode reliably from a conveniently small number of measurements in real time is of increasing importance for machine control.Discriminant analysis has been applied to regime identification of plasma discharges in the ASDEX Upgrade tokamak.
Giannone, L.   +5 more
openaire   +2 more sources

Global gyrokinetic simulations of intrinsic rotation in ASDEX Upgrade Ohmic L-mode plasmas

open access: yes, 2018
Non-linear, radially global, turbulence simulations of ASDEX Upgrade (AUG) plasmas are performed and the nonlinear generated intrinsic flow shows agreement with the intrinsic flow gradients measured in the core of Ohmic L-mode plasmas at nominal ...
A. Lebschy   +9 more
core   +1 more source

Effect of resonant magnetic perturbations on low collisionality discharges in MAST and a comparison with ASDEX Upgrade [PDF]

open access: yes, 2014
Sustained ELM mitigation has been achieved on MAST and AUG using RMPs with a range of toroidal mode numbers over a wide region of low to medium collisionality discharges.
A. Kirk   +23 more
core   +3 more sources

Overview of the EUROfusion Tokamak Exploitation programme in support of ITER and DEMO

open access: yesNuclear Fusion
Within the 9th European Framework programme, since 2021 EUROfusion is operating five tokamaks under the auspices of a single Task Force called ‘Tokamak Exploitation’.
E. Joffrin   +814 more
doaj   +1 more source

Direct Gyrokinetic Comparison of Pedestal Transport in JET with Carbon and ITER-Like Walls [PDF]

open access: yes, 2019
This paper compares the gyrokinetic instabilities and transport in two representative JET pedestals, one (pulse 78697) from the JET configuration with a carbon wall (C) and another (pulse 92432) from after the installation of JET's ITER-like Wall (ILW ...
Field, A. R.   +11 more
core   +2 more sources

Wall conditioning in ASDEX Upgrade [PDF]

open access: yesJournal of Nuclear Materials, 2007
An overview on wall conditioning in ASDEX Upgrade is presented. Helium glow discharges (HeGD) are needed mostly for plasma start up after high density discharges, disruptions and disruption mitigation gas puffs. Boronisation is routinely applied. The reduction of the oxygen content is a minor effect. Strong variation of the wall pumping is observed for
Rohde, V.   +4 more
openaire   +4 more sources

The separatrix operational space of next-step fusion experiments: From ASDEX Upgrade data to SPARC scenarios

open access: yesNuclear Materials and Energy
Fusion power plants require ELM-free, detached operation to prevent divertor damage and erosion. The separatrix operational space (SepOS) is proposed as a tool for identifying access to the type-I ELM-free quasi-continuous exhaust regime.
T. Eich   +14 more
doaj   +1 more source

Gyrokinetic studies of core turbulence features in ASDEX Upgrade H-mode plasmas

open access: yes, 2015
Gyrokinetic validation studies are crucial in developing confidence in the model incorporated in numerical simulations and thus improving their predictive capabilities.
Abiteboul, J.   +8 more
core   +1 more source

A study on the density shoulder formation in the SOL of H-mode plasmas

open access: yesNuclear Materials and Energy, 2017
The term “shoulder formation” refers to an increase of the density decay length in the scrape-off layer (SOL) observed in many tokamaks during L-mode operation when a density threshold is reached.
D. Carralero   +11 more
doaj   +1 more source

Reduced models for the maximum vertical force in a tokamak device

open access: yesNuclear Fusion
A formula was suggested in Miyamoto et al (2011 Plasma Phys. Control. Fusion 53 082001) to calculate the total maximum vertical force due to a vertical displacement event in a tokamak device without modeling the whole phenomenon.
G. Pautasso   +2 more
doaj   +1 more source

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