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Mostrando ítems 1-8 de 8
Artículo
Optimizing beam-ion confinement in ITER by adjusting the toroidal phase of the 3D magnetic fields applied for ELM control
(IOP Publishing, 2021-03)
The confinement of neutral beam injection (NBI) particles in the presence of n = 3 resonant magnetic perturbations (RMPs) in 15 MA ITER DT plasmas has been studied using full orbit ASCOT simulations. Realistic NBI distribution ...
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
Real time control developments at JET in preparation for deuterium-tritium operation
(Elsevier, 2017-11)
Robust high performance plasma scenarios are being developed to exploit the unique capability of JETto operate with Tritium and Deuterium. In this context, real time control schemes are used to guidethe plasma into the ...
Artículo
On the Use of Transfer Entropy to Investigate the Time Horizon of Causal Influences between Signals
(MDPI, 2018)
Understanding the details of the correlation between time series is an essential step on the route to assessing the causal relation between systems. Traditional statistical indicators, such as the Pearson correlation ...
Artículo
ELM-induced cold pulse propagation in ASDEX Upgrade
(IOP Publishing, 2019-05)
In ASDEX Upgrade, the propagation of cold pulses induced by type-I edge localized modes (ELMs) is studied using electron cyclotron emission measurements, in a dataset of plasmas with moderate triangularity. It is found ...
Artículo
Effect of PFC Recycling Conditions on JET Pedestal Density
(Wiley Online Library, 2016-08)
There is experimental evidence that the pedestal dynamics in type-I ELMy H-mode discharges is significantly affected by a change in the recycling conditions at the tungsten plasma-facing components (W-PFCs) after an ELM ...
Artículo
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 ...
Artículo
Transport and acceleration mechanism of fast ions during edge localized modes in ASDEX Upgrade
(IOP Publishing, 2023)
Observations of enhanced fast-ion losses during edge localized modes (ELMs) have been reported in the ASDEX Upgrade tokamak, revealing losses above the injection energy. This suggests that fast ions can be accelerated and ...