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Mostrando ítems 51-60 de 136
Artículo
An analytical expression for ion velocities at the wall including the sheath electric field and surface biasing for erosion modeling at JET ILW
(Elsevier, 2017)
For simulation of plasma-facing component erosion in fusion experiments, an analytical expression for the ion velocity just before the surface impact including the local electric field and an optional surface biasing effect ...
Artículo
A classification scheme for edge-localized modes based on their probability distributions
(AIP Publishing, 2016-11)
We present here an automated classification scheme which is particularly well suited to scenarios where the parameters have significant uncertainties or are stochastic quantities. To this end, the parameters are modeled ...
Artículo
Pedestal evolution physics in low triangularity JET tokamak discharges with ITER-like wall
(IOP Publishing, 2018-01)
The pressure gradient of the high confinement pedestal region at the edge of tokamak plasmas rapidly collapses during plasma eruptions called edge localised modes (ELMs), and then re-builds over a longer time scale before ...
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 ...
Artículo
Dose rates and specific activities of copper based materials irradiated during the TT plasma operation at JET
(Elsevier, 2020)
Before deuterium-tritium (DTE2), a new tritium campaign (TT) with the objective to validate the activities, dose rates for selected materials and OLTIS container components, as resulting from neutron irradiation at ...
Artículo
Stationary Zonal Flows during the Formation of the Edge Transport Barrier in the JET Tokamak
(2016-02)
High spatial resolution Doppler backscattering measurements in JET have enabled new insights into the development of the edge Er. We observe fine-scale spatial structures in the edge Er well with a wave number krρi ≈ ...
Artículo
Neural network approximated Bayesian inference of edge electron density profiles at JET
(IOP Publishing, 2020)
A neural network (NN) has been trained on the inference of the edge electron density profiles from measurements of the JET lithium beam emission spectroscopy (Li-BES) diagnostic. The novelty of the approach resides in ...
Artículo
Neutron spectroscopy measurements of 14 MeV neutrons at unprecedented energy resolution and implications for deuterium-tritium fusion plasma diagnostics
(IOP Publishing, 2018-04)
An accurate calibration of the JET neutron diagnostics with a 14 MeV neutron generator was performed in the first half of 2017 in order to provide a reliable measurement of the fusion power during the next JET deuterium–tritium ...
Artículo
Response of the imaging cameras to hard radiation during JET operation
(Elsevier, 2017-11)
The analysis of the radiation damage of imaging systems is based on all different types-of aiialoiue/digital cameras with uncooled as well as actively cooled image sensors in the VIS/NIR/MWIR spectral ranges. The Monte ...
Artículo
Overview of the JET results
(IOP Publishing, 2015)
Since the installation of an ITER-like wall, the JET programme has focused on the consolidation of ITER design choices and the preparation for ITER operation, with a specific emphasis given to the bulk tungsten melt ...