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Now showing items 131-136 of 136
Article
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 ...
Article
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 ...
Article
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 ...
Article
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 ...
Article
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 ...
Article
Detection of Causal Relations in Time Series Affected by Noise in Tokamaks Using Geodesic Distance on Gaussian Manifolds
(MDPI, 2017-10)
Modern experiments in Magnetic Confinement Nuclear Fusion can produce Gigabytes of data, mainly in form of time series. The acquired signals, composing massive databases, are typically affected by significant levels of ...