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Mostrando ítems 1-10 de 15
Artículo
Connecting the global H-mode power threshold to the local radial electric field at ASDEX Upgrade
(IOP Publishing, 2020)
The relation between the macroscopic input power required at ASDEX Upgrade to access the H-mode Pthr and the microscopic E x B shear has been investigated via fast charge-exchange recombination spectroscopy (CXRS) measurements ...
Artículo
SOLPS 5.0 simulations of the high-field side divertor detachment of L-mode plasmas in ASDEX upgrade with convection-dominated radial SOL transport
(Elsevier, 2019)
SOLPS 5.0 simulations assuming convection-dominated radial ion transport show qualitative and quantitative agreement with measurements of detached high-field side (HFS) divertor conditions for unseeded low-power L-mode ...
Artículo
Extensions to the charge exchange recombination spectroscopy diagnostic suite at ASDEX Upgrade
(AIP Publishing, 2017)
A new core charge exchange recombination spectroscopy diagnostic has been installed in the ASDEX Upgrade tokamak that is capable of measuring the impurity ion temperature, toroidal rotation, and density on both the low ...
Artículo
Evaluation of impurity densities from charge exchange recombination spectroscopy measurements at ASDEX Upgrade
(Institute of Physics Publishing, 2018-07-26)
At ASDEX upgrade (AUG) a new framework for the evaluation of impurity densities based on measurements from charge exchange recombination spectroscopy (CXRS) diagnostics has been developed. The charge exchange impurity ...
Artículo
Pedestal and Er profile evolution during an edge localized mode cycle at ASDEX Upgrade
(IOP Publishing, 2017)
The upgrade of the edge charge exchange recombination spectroscopy diagnostic at ASDEX Upgrade has enabled highly spatially resolved me asurements of the impurity ion dynamics during an edge-localized mode cycle ( E ...
Artículo
A forward model for the helium plume effect and the interpretation of helium charge exchange measurements at ASDEX Upgrade
(IOP Science, 2018-03-23)
The analysis of the charge exchange measurements of helium is hindered by an additional emission contributing to the spectra, the helium ‘plume’ emission (Fonck et al 1984 Phys. Rev. A 29 3288), which complicates the ...
Artículo
In-out charge exchange measurements and 3D modelling of diagnostic thermal neutrals to study edge poloidal impurity asymmetries
(IOP Publishing Ltd, 2022)
A new method was developed to model the neutral population produced by the gas puff based charge exchange recombination spectroscopy systems at ASDEX Upgrade (AUG). With this method, the edge impurity density on the high ...
Ponencia
The effect of helium on plasma performance at ASDEX Upgrade and JET
(European Physical Society (EPS), 2017)
Ponencia
Poloidal impurity asymmetry studies using the upgraded high field side edge CXRS diagnostic at ASDEX Upgrade
(European Physical Society (EPS), 2019)
Artículo
I-mode studies at ASDEX Upgrade: L-I and I-H transitions, pedestal and confinement properties
(IOP Publishing, 2017)
The I-mode is a plasma regime obtained when the usual L-H power threshold is high, e.g. with unfavourable ion B ∇ direction. It is characterised by the development of a temperature pedestal while the density remains ...