Results 41 to 50 of about 1,720 (162)

Deuterium retention in the divertor tiles of JET ITER-Like wall

Nuclear Materials and Energy, 2017
Divertor tiles removed after the second JET ITER-Like Wall campaign 2013–2014 (ILW-2) were studied using Secondary Ion Mass Spectrometry (SIMS). Measurements show that the thickest beryllium (Be) dominated deposition layers are located at the upper part ...
A. Lahtinen, J. Likonen, S. Koivuranta, A. Hakola, K. Heinola, C.F. Ayres, A. Baron-Wiechec, J.P. Coad, A. Widdowson, J. Räisänen   +9 more
doaj   +1 more source

Comparison of H-mode plasmas in JET-ILW and JET-C with and without nitrogen seeding [PDF]

, 2016
In high confinement mode, highly shaped plasmas with edge localized modes in JET, and for heating power of 15-17 MW, the edge fluid code EDGE2D-EIRENE predicts transition to detachment assisted by nitrogen at the low field side (LFS) target when more ...
Belo, P., Beurskens, M., Brezinsek, S., Corrigan, G., Devaux, S., Drewelow, P., Giroud, C., Groth, M., Harting, D., Huber, A., Jachmich, S., Jaervinen, A. E., Lawson, K., Lipschultz, B., Maddison, G., Maggi, C., Marchetto, C., Marsen, S., Matthews, G. F., Meigs, A. G., Moulton, D., Sieglin, B., Stamp, M. F., Wiesen, S.   +23 more
core   +1 more source

Contrasting H-mode behaviour with fuelling and nitrogen seeding in the all-carbon and metallic versions of JET [PDF]

, 2013
An all-metal ITER-Like Wall (JET-ILW), consisting of beryllium in the main chamber and tungsten surfaces in the divertor, has now been installed in JET to pursue low retention of fuel species and to explore the impact on next-step-relevant plasmas.
A. Järvinen, A. Meigs, C. Giroud, C. Lowry, F. Rimini, G. Maddison, JET EFDA contributors, K. McCormick, L. Garzotti, M. Beurskens, M. Stamp, M. Wischmeier, P. Devynck, S. Brezinsek, S. Jachmich, S. Marsen, T. Eich   +16 more
core   +2 more sources

Automatic disruption classification in JET with the ITER-like wall [PDF]

, 2015
The new full-metal ITER-like wall at JET was found to have a deep impact on the physics of disruptions at JET. In order to develop disruption classification, the 10D operational space of JET with the new ITER-like wall has been explored using the ...
Cannas B, De Vries PC, Fanni A, Murari A, Pau A, Sias G   +5 more
core   +1 more source

Parameter study of ICRH wave propagation in IShTAR [PDF]

, 2016
A crude first assessment of how waves behave is commonly made relying on decoupled dispersion equation roots. In the low density, low temperature region behind the last closed flux surface in a tokamak where the density decays exponentially and where the
Crombé, Kristel, Van Eester, D
core   +3 more sources

Recent H majority inverted radio frequency heating scheme experiments in JET-ILW

EPJ Web of Conferences, 2017
Inverted 3He and D ion cyclotron minority heating scenarios were recently tested in JET-ILW. They confirm the good heating efficiency at low concentrations of ∼3%. The 3He minority heating scheme is only modestly affected by the change from a carbon (JET-
Van Eester Dirk, Lerche Ernesto, Kazakov Yevgen, Jacquet Philippe, Baranov Yuri, Bobkov Volodymyr, Crombé Kristel, Czarnecka Agata, Dumont Remi, Dumortier Pierre, Eriksson Jacob, Giacomelli Luca, Giroud Carine, Goniche Marc, Hellesen Carl, Kiptily Vasily, Krawczyk Natalia, Koskela Tuomas, Nave Filomena, Nocente Massimo, Ongena Jef, Santala Marko, Salewski Mirko, Schneider Mireille, Weisen Henri   +24 more
doaj   +1 more source

EDGE2D-EIRENE simulations of the impact of poloidal flux expansion on the radiative divertor performance in JET

Nuclear Materials and Energy, 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] experiment and simulations have ...
B. Viola, G. Calabró, A.E. Jaervinen, I. Lupelli, F. Maviglia, S. Wiesen, M. Wischmeier, JET Contributors   +7 more
doaj   +1 more source

Fuel desorption from JET-ILW materials: assessment of analytical approach and identification of sources of uncertainty and discrepancy

Nuclear Fusion, 2023
This work was carried out to identify sources of errors, uncertainties and discrepancies in studies of fuel retention in wall components from the JET tokamak using methods based on thermal desorption.
Y. Zayachuk, I. Jepu, M. Zlobinski, C. Porosnicu, N. Catarino, E. Pajuste, P. Petersson, L. Dittrich, J.P. Coad, E. Grigore, C. Postolache, E. Alves, G. Kizane, M. Rubel, A. Widdowson   +14 more
doaj   +1 more source

Overview of the JET results [PDF]

, 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 experiment, which has been crucial for
JET Contributors, O'Mullane, M., Romanelli, F., Summers, H.P   +3 more
core   +1 more source

A study of the atomic and molecular power loss terms in EDGE2D-EIRENE simulations of JET ITER-like wall L-mode discharges

Nuclear Materials and Energy, 2017
A discrepancy in the divertor radiated powers between EDGE2D-EIRENE simulations and JET-ILW experiments employing a set of NBI-heated L-mode discharges with step-wise density variation is investigated.
K.D. Lawson, M. Groth, D. Harting, S. Menmuir, D. Reiter, S. Brezinsek, G. Corrigan, P. Drewelow, C.F. Maggi, A.G. Meigs, J. Simpson, M.F. Stamp, S. Wiesen, Contributors   +13 more
doaj   +1 more source