Results 71 to 80 of about 451,392 (162)

Investigation of deuterium trapping and release in the JET ITER-like wall divertor using TDS and TMAP

Nuclear Materials and Energy, 2019
Selected set of samples from JET ITER-Like Wall (JET-ILW) divertor tiles exposed both in 2013–2014 and 2011–2014 has been analysed using Thermal Desorption Spectrometry (TDS).
J. Likonen, K. Heinola, A. De Backer, A. Baron-Wiechec, N. Catarino, I. Jepu, C.F. Ayres, P. Coad, S. Koivuranta, S. Krat, G.F. Matthews, M. Mayer, A. Widdowson   +12 more
doaj   +1 more source

Comparison of OEDGE and EDGE2D‐EIRENE predictions of the scrape‐off layer conditions for attached plasmas

Contributions to Plasma Physics, Volume 64, Issue 7-8, August-September 2024.
Abstract Predictions of the scrape‐off layer (SOL) plasma conditions from the 2D multi‐fluid code EDGE2D‐EIRENE are compared to the OEDGE 1D fluid code for JET low‐confinement mode (L‐mode) plasmas. In the low‐recycling divertor conditions (divertor target plasma collisionality νe≈30$$ {\nu}_e\approx 30 $$), OEDGE and EDGE2D‐EIRENE agree on the ...
Vesa‐Pekka Rikala, Mathias Groth, Henri Kumpulainen, David Rees   +3 more
wiley   +1 more source

The dependence of confinement on the isotope mass in the core and the edge of AUG and JET-ILW H-mode plasmas

Nuclear Fusion, 2021
Experiments in ASDEX Upgrade (AUG) and JET with the ITER-like wall (JET-ILW) are performed to separate the pedestal and core contributions to confinement in H-modes with different main ion masses. A strong isotope mass dependence in the pedestal is found
P. Schneider, C. Angioni, L. Frassinetti, L. Horvath, M. Maslov, F. Auriemma, M. Cavedon, C. Challis, E. Delabie, M. Dunne, J. Climent, J. Hobirk, A. Kappatou, D. Keeling, B. Kurzan, M. Lennholm, B. Lomanowski, C. Maggi, R. McDermott, T. Pütterich, A. Thorman, M. Willensdorfer, the ASDEX Upgrade team, the Eurofusion MST1 Team, Jet Contributors   +24 more
semanticscholar   +1 more source

Influence of the impurities in the hybrid discharges with high power in JET ILW

Nuclear Fusion, 2022
Abstract The aim of this paper is to numerically study the influences of the impurities on the high power hybrid discharges in the JET ITER-like wall (ILW) configuration in the DD and deuterium–tritium (DT) scenarios. Numerical simulations with the COREDIV code of hybrid discharges with 32 MW auxiliary heating, 2.2 MA plasma current and ...
I. Ivanova-Stanik, C.D. Challis, A. Chomiczewska, J. Hobirk, A. Huber, A. Kappatou, E. Lerche, G. Telesca, R. Zagórski, null JET Contributors   +9 more
openaire   +3 more sources

Comparison of the scrape‐off layer two‐point model for deuterium and helium plasmas in JET ITER‐like wall low‐confinement plasma conditions

Contributions to Plasma Physics, Volume 64, Issue 7-8, August-September 2024.
Abstract The hydrogenic two‐point model (H‐2PM), an analytical model for the scrape‐off layer that predicts a common electron and ion temperature and density along a flux tube from a target temperature and density, is adapted to a single‐species helium (He) model, preserving the 2PM assumptions and analytical nature.
David Rees, Joona Sissonen, Mathias Groth, Vesa‐Pekka Rikala, Henri Kumpulainen, Beth Thomas, Mathias Brix, JET Contributors   +7 more
wiley   +1 more source

The effect of gyration on the deposition of beryllium and deuterium at rough surface on the divertor tiles with ITER-like-wall in JET

Nuclear Materials and Energy, 2019
Experimental results from microbeam analyses on divertor tiles, through 2011-2012 and 2013-2014 operations in JET-ILW, showed that the deuterium retention and beryllium impurity deposition were non-uniform on the rough surface in micro meter scale ...
Y. Zhou, H. Bergsåker, P. Petersson, G. Possnert, J. Likonen   +4 more
doaj   +1 more source

A numerical study on the effect of dust particles on tritium deposition on plasma-facing materials

Nuclear Materials and Energy, 2022
Tritium deposition is a key issue for fusion devices. The existence of dust leads to increase of tritium deposition rates due to the large specific surface area (SSA) of dust grains. Experiments in JET-ILW have indicated that the deposition and retention
Guo-Jian Niu, Gakushi Kawamura, Qian Xu, Tao He, Fei-Fei Nian, Rong Wang, Zhong-Shi Yang, Guang-Nan Luo   +7 more
doaj   +1 more source

Effect of neon seeding on the pedestal structure and stability in the JET-ILW deuterium JET-ITER baseline scenario using both ideal and resistive MHD

Nuclear Fusion
In this work, the effect of neon seeding in the JET-ILW JET-ITER baseline scenario on pedestal structure, global stability and local stability is studied.
H. Nyström, C. Giroud, L. Frassinetti, S. Menmuir, E. Litherland-Smith, J. M. Fontdecaba Climent, D. Kos, Zhouji Huang, A. Boboc, J. Macdonald, G. Szepesi   +10 more
semanticscholar   +1 more source

Lyman line opacities in tokamak divertor plasmas under high-recycling and detached conditions

Nuclear Materials and Energy
Radiation transport simulations of the deuterium Lyman line series using EIRENE predict a factor of 2 increase of Balmer-α emission in the JET-ILW low confinement divertor plasmas in high-recycling and detached conditions caused by the re-absorption of ...
Ray Chandra, Detlev Reiter, Niels Horsten, Mathias Groth   +3 more
doaj   +1 more source

Overview of the JET ITER-like wall divertor

Nuclear Materials and Energy, 2017
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, lifetime issues relating to tungsten coatings on JET ...
A. Widdowson, E. Alves, A. Baron-Wiechec, N.P. Barradas, N. Catarino, J.P. Coad, V. Corregidor, A. Garcia-Carrasco, K. Heinola, S. Koivuranta, S. Krat, A. Lahtinen, J. Likonen, M. Mayer, P. Petersson, M. Rubel, S. Van Boxel   +16 more
doaj   +1 more source