Buscar
Mostrando ítems 211-220 de 228
Artículo
Isotope identity experiments in JET-ILW with H and D L-mode plasmas
(IOP Publishing, 2019-06-07)
NBI-heated L-mode plasmas have been obtained in JET with the Be/W ITER-like wall (JETILW) in H and D, with matched profiles of the dimensionless plasma parameters, ρ* , ν* , β and q in the plasma core confinement region ...
Artículo
Fast-ion redistribution and loss due to edge perturbations in the ASDEX Upgrade, DIII-D and KSTAR tokamaks
(IOP Publishing, 2013)
The impact of edge localized modes (ELMs) and externally applied resonant and non-resonant magnetic perturbations (MPs) on fast-ion confinement/transport have been investigated in the ASDEX Upgrade (AUG), DIII-D and KSTAR ...
Artículo
Velocity space resolved absolute measurement of fast ion losses induced by a tearing mode in the ASDEX Upgrade tokamak
(IOP Publishing, 2018)
Absolute flux of fast ion losses induced by tearing modes have been measured by means of fast ion loss detectors (FILD) for the first time in RF heated plasmas in the ASDEX Upgrade tokamak. Up to 30 MW m−2 of fast ion ...
Artículo
Measurements and modeling of Alfven eigenmode induced fast ion transport and loss in DIII-D and ASDEX Upgrade
(AIP Publishing, 2011-05)
Neutral beam injection into reversed magnetic shear DIII-D and ASDEX Upgrade plasmas produces a variety of Alfve´nic activity including toroidicity-induced Alfve´n eigenmodes and reversed shear Alfve´n eigenmodes (RSAEs). ...
Artículo
Progress in reducing ICRF-specific impurity release in ASDEX upgrade and JET
(Elsevier, 2017-08)
Use of new 3-strap ICRF antennas with all-tungsten (W) limiters in ASDEX Upgrade results in a reduction of the W sources at the antenna limiters and of the W content in the confined plasma by at least a factor of 2 compared ...
Artículo
Feasibility study for an edge main ion charge exchange recombination spectroscopy system at ASDEX Upgrade
(IOP Publishing, 2019)
A feasibility study for a new edge main ion charge exchange recombination spectroscopy (CXRS) system at the ASDEX Upgrade tokamak has been carried out. This diagnostic uses the new edge fast-ion Dα (FIDA) spectrometers and ...
Artículo
An assessment of nitrogen concentrations from spectroscopic measurements in the JET and ASDEX upgrade divertor
(Elsevier, 2019-01)
The impurity concentration in the tokamak divertor plasma is a necessary input for predictive scaling of divertor detachment, however direct measurements from existing tokamaks in different divertor plasma conditions are ...
Artículo
Velocity-space sensitivity and tomography of scintillator-based fast-ion loss detectors
(IOP Publishing, 2018)
A simple model for the instrument function of scintillator-based fast-ion loss detectors (FILD) has been developed which accounts for the orbit trajectories in the 3D detector geometry and for the scintillator response. ...
Artículo
Classification of ELM types in Joint European Torus based on global plasma parameters using discriminant analysis
(Elsevier, 2017-11)
In this work, discriminant analysis is used as the main approach for building a physics based automated classifier for the discrimination of the edge-localized mode (ELM) plasma instability. The classifier is then applied ...
Artículo
An improved model for the accurate calculation of parallel heat fluxes at the JET bulk tungsten outer divertor
(Elsevier, 2018-10)
Parallel heat flux calculations at the JET divertor have been based on the assumption that all incoming heat is due to the projection of the heat flux parallel to the magnetic line, q , plus a constant background. This ...