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Mostrando ítems 11-20 de 20
Artículo
High power neon seeded JET discharges: Experiments and simulations
(Elsevier, 2017-08)
A series of neon seeded JET ELMy H-mode pulses is considered from the modeling as well as from the experimental point of view. For two different Ne seeding rates and two different D puffing gas levels the heating power, P ...
Artículo
Characterisation of the deuterium recycling at the W divertor target plates in JET during steady-state plasma conditions and ELMs
(IOP Publishing, 2016-02)
Experiments in the JET tokamak equipped with the ITER-like wall (ILW) revealed that the inner and outer target plate at the location of the strike points represent after one year of operation intact tungsten (W) surfaces ...
Artículo
First ERO2.0 modeling of Be erosion and non-local transport in JET ITER-like wall
(IOP Publishing, 2017-12)
ERO is a Monte-Carlo code for modeling plasma-wall interaction and 3D plasma impurity transport for applications in fusion research. The code has undergone a significant upgrade (ERO2.0) which allows increasing the ...
Artículo
Material migration and fuel retention studies during the JET carbon divertor campaigns
(Elsevier, 2019-01)
The first divertor was installed in the JET machine between 1992 and 1994 and was operated with carbon tiles and then beryllium tiles in 1994-5. Post-mortem studies after these first experiments demonstrated that most of ...
Artículo
Beryllium migration in JET ITER-like wall plasmas
(IOP Publishing, 2015)
JET is used as a test bed for ITER, to investigate beryllium migration which connects the lifetime of first-wall components under erosion with tokamak safety, in relation to long-term fuel retention. The (i) limiter and ...
Artículo
On the role of finite grid extent in SOLPS-ITER edge plasma simulations for JET H-mode discharges with metallic wall
(Elsevier, 2018-12)
The impact of the finite grid size in SOLPS-ITER edge plasma simulations is assessed for JET H-mode discharges with a metal wall. For a semi-horizontal divertor configuration it is shown that the separatrix density is at ...
Artículo
Improved ERO modelling of beryllium erosion at ITER upper first wall panel using JET-ILW and PISCES-B experience
(Elsevier, 2019-05)
ERO is a 3D Monte-Carlo impurity transport and plasma-surface interaction code. In 2011 it was applied for the ITER first wall (FW) life time predictions [1] (critical blanket module BM11). After that the same code was ...
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
Modelling of tungsten erosion and deposition in the divertor of JET-ILW in comparison to experimental findings
(Elsevier, 2019-01)
The erosion, transport and deposition of tungsten in the outer divertor of JET-ILW has been studied for an H-Mode discharge with low frequency ELMs. For this specific case with an inter-ELM electron temperature at the ...
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 ...