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Mostrando ítems 11-20 de 45
Artículo
Comparison of the structure of the plasma-facing surface and tritium accumulation in beryllium tiles from JET ILW campaigns 2011-2012 and 2013-2014
(ELSEVIER, 2019-05)
In this study, beryllium tiles from Joint European Torus (JET) vacuum vessel wall were analysed and compared regarding their position in the vacuum vessel and differences in the exploitation conditions during two cam paigns ...
Artículo
Core plasma ion cyclotron emission driven by fusion-born ions
(Institute of Physics Publishing, 2019)
Ion cyclotron emission (ICE) signals whose spectral peaks match the fundamental cyclotron frequencies of hydrogen and tritium in the plasma core, near the magnetic axis, are observed in ASDEX Upgrade deuterium plasmas. In ...
Artículo
Impact of fast ions on density peaking in JET: fluid and gyrokinetic modeling
(IOP Publishing, 2019-05-29)
The effect of fast ions on turbulent particle transport, driven by ion temperature gradient (ITG)/ trapped electron mode turbulence, is studied. Two neutral beam injection (NBI) heated JET discharges in different regimes ...
Artículo
Determination of the fast-ion phase-space coverage for the fild spatial array of the ASDEX upgrade tokamak
(Institute of Physics Publishing, 2019)
The fast-ion phase-space coverage of the ASDEX Upgrade Fast-Ion Loss Detectors (FILD) has been estimated and the results are presented here. To that end, a numerical tool has been developed to determine particle orbits ...
Artículo
Forward modeling of collective Thomson scattering for Wendelstein 7-X plasmas: Electrostatic approximation
(AIP Publishing, 2019-02)
In this paper, we present a method for numerical computation of collective Thomson scattering (CTS). We developed a forward model, eCTS, in the electrostatic approximation and benchmarked it against a full electromagnetic ...
Artículo
Upgrade of the edge Charge Exchange Recombination Spectroscopy system at the High Field Side of ASDEX Upgrade
(IOP Publishing, 2019)
The upgrade of the high field side (HFS) edge charge exchange recombination spectroscopy (CXRS) system of ASDEX Upgrade is presented. This diagnostic provides temperature, rotation and radiance measurements of impurity ...
Artículo
Active control of Alfvén eigenmodes in magnetically confined toroidal plasmas
(IOP Publishing, 2019-05)
Alfvén waves are electromagnetic perturbations inherent to magnetized plasmas that can be driven unstable by a free energy associated with gradients in the energetic particles’ distribution function. The energetic particles ...
Artículo
RF sheath modeling of experimentally observed plasma surface interactions with the JET ITER-Like Antenna
(Elsevier, 2019-05)
Waves in the Ion Cyclotron Range of Frequencies (ICRF) enhance local Plasma-Surface Interactions (PSI) near the wave launchers and magnetically-connected objects via Radio-Frequency (RF) sheath rectification. ITER will use ...
Ponencia
Non-linear hybrid kinetic-MHD simulations of ELMs in the ASDEX Upgrade tokamak
(European Physical Society (EPS), 2019)
Ponencia
An imaging heavy ion beam probe diagnostic for the ASDEX Upgrade tokamak
(European Physical Society (EPS), 2019)