Results 91 to 100 of about 451,392 (162)

Understanding tungsten erosion during inter/intra-ELM periods in He-dominated JET-ILW plasmas

Physica Scripta, 2021
Tungsten erosion was quantified during inter/intra-ELM periods in He-dominated JET-ILW plasmas by optical emission spectroscopy. The intra-ELM tungsten sputtering in helium plasmas, which dominates the total W source, prevails by a factor of about 4 over
A. Huber, S. Brezinsek, Valentina Huber, E. Solano, G. Sergienko, I. Borodkina, S. Aleiferis, Andy Meigs, D. Tskhakaya, M. Sertoli, M. Baruzzo, D. Borodin, Pedro Carvalho, E. Delabie, D. Douai, A. Kirschner, K. Lawson, Christian Linsmeier, J. Mailloux, S. Menmuir, P. Mertens, E. Pawelec, J. Romazanov, Anthony Shaw   +23 more
semanticscholar   +1 more source

N=2 ICRH of H majority plasmas in JET-ILW [PDF]

AIP Conference Proceedings, 2015
Heating single ion species plasmas with ICRF is a challenging task: Fundamental ion cyclotron heating (w = wci) suffers from the adverse polarization of the RF electric fields near the majority cyclotron resonance while second harmonic heating (w = 2wci) typically requires pre-heating of the plasma ions to become efficient.
Lerche, E, Van Eester, D, Kazakov, Y, Jacquet, P, Monakhov, I, Goniche, M, Colas, L, Rimini, F, Crombé, Kristel, Dumont, R, Kiptily, V, Santala, M   +11 more
openaire   +2 more sources

ICRH system performance during ITER-Like Wall operations at JET and the outlook for DT campaign

EPJ Web of Conferences, 2017
Performance of JET ICRH system since installation of the metal ITER-Like Wall (ILW) has been assessed statistically. The data demonstrate steady increase of the RF power coupled to plasmas over recent years with the maximum pulse-average and peak values ...
Monakhov Igor, Blackman Trevor, Dumortier Pierre, Durodié Frederic, Jacquet Philippe, Lerche Ernesto, Noble Craig   +6 more
doaj   +1 more source

ICRH-related impurity source and control across experiments in H, D, T plasmas at JET-ILW

Nuclear Fusion
The experimental and theoretical analysis were focused on experiments conducted to assess the effect of plasma isotopes, protium (H), deuterium (D), and tritium (T) on ion cyclotron resonance heating (ICRH) related plasma wall interactions. Comparison of
A. Chomiczewska, W. Gromelski, I. Ivanova-Stanik, E. Kowalska-Strzęciwilk, Natalia Wendler, Philippe Jacquet, Andy Meigs, J. Mailloux, S. Menmuir, J. Karhunen, E. Lerche, I. Monakhov, R. Otin, B. Thomas, P. Dumortier, D. van Eester, M. Baruzzo, Volodymyr V Bobkov, S. Brezinsek, L. Colas, D. Douai, D. Milanesio, E. Pawelec, E. Delabie, B. Lomanowski   +24 more
semanticscholar   +1 more source

An analytical expression for ion velocities at the wall including the sheath electric field and surface biasing for erosion modeling at JET ILW

Nuclear Materials and Energy, 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 is suggested.
I. Borodkina, D. Borodin, S. Brezinsek, A. Kirschner, I.V. Tsvetkov, V.A. Kurnaev, V. Bobkov, C.C. Klepper, A. Lasa, C. Guillemaut, P. Jacquet, M.F. Stamp, C. Giroud, S. Silburn, I. Balboa, E. Solano   +15 more
doaj   +1 more source

Main chamber wall plasma loads in JET-ITER-like wall at high radiated fraction

Nuclear Materials and Energy, 2017
Future tokamak reactors of conventional design will require high levels of exhaust power dissipation (more than 90% of the input power) if power densities at the divertor targets are to remain compatible with active cooling.
C. Guillemaut, P. Drewelow, G.F. Matthews, A.S. Kukushkin, R.A. Pitts, P. Abreu, S. Brezinsek, M. Brix, P. Carman, R. Coelho, S. Devaux, J. Flanagan, C. Giroud, D. Harting, C.G. Lowry, C.F. Maggi, F. Militello, C. Perez Von Thun, E.R. Solano, A. Widdowson, S. Wiesen, M. Wischmeier, D. Wood   +22 more
doaj   +1 more source

Study of impurity behavior in JET-ILW hybrid scenario with deuterium, tritium, and deuterium–tritium plasmas

Physics of Plasmas
Experimental campaigns at the Joint European Torus with an ITER-like Be/W wall with pure deuterium (D), tritium (T), and deuterium–tritium (DT) were a unique opportunity to explore various aspects related to the ITER operation.
N. Wendler, A. Chomiczewska, W. Gromelski, E. Kowalska-Strzęciwilk, I. Ivanova-Stanik, C. Challis, J. Hobirk, A. Kappatou, E. Lerche, P. Carvalho, I. Coffey, G. Pucella, E. Giovannozzi   +12 more
semanticscholar   +1 more source

Density pedestal prediction model for tokamak plasmas

Nuclear Fusion
A model for the pedestal density prediction based on neutral penetration combined with pedestal transport is presented. The model is tested against a pedestal database of JET-ILW Type I ELMy H-modes showing good agreement over a wide range of parameters ...
S. Saarelma, J.W. Connor, P. Bílková, P. Bohm, C. Bowman, A.R. Field, L. Frassinetti, R. Friedström, S. Henderson, K. Imada, A. Kirk, O.J. Kwon, T. Luda, R. Sarwar, R. Scannell, S.F. Smith, the ASDEX Upgrade Team, MAST-U team, STEP team, JET Contributors, the Eurofusion Tokamak Exploitation Team   +20 more
doaj   +1 more source

40 years of ICRF operation on JET: Challenges and achievements [PDF]

EPJ Web of Conferences
After 40 years of successful operation and multiple Deuterium-Tritium (D-T) campaigns, the Joint European Torus (JET) concluded its operations in December 2023.
Dumortier Pierre, Monakhov Igor, Jacquet Philippe, Durodié Frédéric, Lerche Ernesto, Lobel Robert, Mayoral Marie-Line, Noble Craig, Roberts Jason, Sheikh Haroon   +9 more
doaj   +1 more source

Comparison of DIVIMP and EDGE2D-EIRENE tungsten transport predictions in JET edge plasmas

Nuclear Materials and Energy, 2020
The average tungsten concentrations in the pedestal region (cW) predicted by the Monte Carlo code DIVIMP and the coupled multi-fluid plasma/kinetic neutral code EDGE2D-EIRENE are found to agree within a factor of 2 for a range of JET-ILW L-mode and H ...
H.A. Kumpulainen, M. Groth, M. Fontell, A.E. Jaervinen, G. Corrigan, D. Harting   +5 more
doaj   +1 more source