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Mostrando ítems 1-10 de 22
Artículo
Beryllium film deposition in cavity samples in remote areas of the JET divertor during the 2011-2012 ITER-like wall campaign
(Elsevier, 2017-08)
Beryllium film deposition was studied with cavity samples in remote areas of the inner and outer JET divertor and below divertor tile 5 during the 2011–2012 campaign with the ITER-like wall. Predominantly beryllium films ...
Artículo
Overview of the JET ITER-like wall divertor
(Elsevier, 2017-08)
The work presented draws on new analysis of components removed following the second JET ITER-like wall campaign 2013–14 concentrating on the upper inner divertor, inner and outer divertor corners, life- time issues relating ...
Artículo
Deposition in the inner and outer corners of the JET divertor with carbon wall and metallic ITER-like wall
(IOP Publishing, 2016-02)
Rotating collectors and quartz microbalances (QMBs) are used in JET to provide time-dependent measurements of erosion and deposition. Rotation of collector discs behind apertures allows recording of the long term evolution ...
Artículo
Fuel inventory and deposition in castellated structures in JET-ILW
(IOP Publishing, 2017-06)
Since 2011 the JET tokamak has been operated with a metal ITER-like wall (JET-ILW) including castellated beryllium limiters and lamellae-type bulk tungsten tiles in the divertor. This has allowed for a large scale test ...
Artículo
3D simulations of gas puff effects on edge plasma and ICRF coupling in JET
(IOP Publishing, 2017-05)
Recent JET (ITER-Like Wall) experiments have shown that the fueling gas puffed from different locations of the vessel can result in different scrape-off layer (SOL) density profiles and therefore different radio frequency ...
Artículo
Impact of the JET ITER-like wall on H-mode plasma fueling
(IOP Publishing, 2017-06)
JET ITER-like wall (ILW) experiments show that the edge density evolution is strongly linked with the poloidal distribution of the ionization source. The fueling profile in the JET-ILW is more delocalized as compared to ...
Artículo
EDGE2D-EIRENE simulations of the impact of poloidal flux expansion on the radiative divertor performance in JET
(Elsevier, 2017)
In the past at JET, with the MkI divertor, a systematic study of the influence of X-point height and poloidal flux expansion has been conducted [1,2] showing minor differences in the radiation distribution, whereas in [3] ...
Artículo
Comparative H-mode density limit studies in JET and AUG
(Elsevier, 2017-08)
Identification of the mechanisms for the H-mode density limit in machines with fully metallic walls, and their scaling to future devices is essential to find for these machines the optimal operational boundaries with the ...
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
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 ...