Results 141 to 150 of about 451,392 (162)

A gyrokinetic perspective on the JET-ILW pedestal

Nuclear Fusion, 2017
JET has been unable to recover historical confinement levels when operating with an ITER-like wall (ILW) due largely to the inaccessibility of high pedestal temperatures. Finding a path to overcome this challenge is of utmost importance for both a prospective JET DT campaign and for future ITER operation.
D.R. Hatch, M. Kotschenreuther, S. Mahajan, P. Valanju, X. Liu   +4 more
openaire   +1 more source

Modelling with COREDIV Code of JET ILW Configuration

Contributions to Plasma Physics, 2010
AbstractIn this paper we present integrated numerical modeling for the first time applied to AT discharges with tungsten wall using the COREDIV code. We concentrate on numerical simulations of Ne seeded scenarios in the new ILW JET configuration. Results show that the JET operating space might be limited, with tungsten wall, to high density plasmas ...
Zagorski, R., Telesca, G., Fundamenski, W., McCormick, K.   +3 more
openaire   +2 more sources

Spectroscopic measurements of Be erosion at JET ILW and interpretation with ERO modelling

Journal of Nuclear Materials, 2013
Abstract Beryllium (Be) erosion has been studied in dedicated limiter discharges in JET with the recently installed ITER-like wall [1] . Passive spectroscopy [2] in the vicinity of the solid Be limiter is used for measurement of the Be physical sputtering as the main erosion mechanism.
Borodin, D., Stamp, M., Kirschner, A., Björkas, C., Brezinsek, S., Miettunen, J., Matveev, D., Silva, C., Van Hoey, O., Groth, M., Marsen, S., Philipps, V., Contributors, JET-EFDA   +13 more
openaire   +5 more sources

Density limit of H-mode plasmas on JET-ILW

Journal of Nuclear Materials, 2015
High-density discharges on JET with ITER-like Wall (ILW) have been analysed with the aim of establishing a mechanism for the H-mode density limit (DL) and compared with experiments in the JET carbon material configuration. The density limit is up to 20% higher in the JET-ILW than in the JET-C machine. The observed H-mode density limit is found close to
Huber, A., Calabro, G., Clever, M., Esser Hg, Guillemaut, C., Jachmich, S., Jarvinen, A., Linsmeier, C., Matthews Gf, Meigs Ag, Mertens, P., Brezinsek, S., Philipps, V., Stamp, M., Wischmeier, M., Wiesen, S., Sergienko, G., Groth, M., De Vries Pc, Aho-mantila, L., Arnoux, G., Bernert, M., Beurskens Mna   +22 more
openaire   +5 more sources

Co-deposited layers in the divertor region of JET-ILW

Journal of Nuclear Materials, 2015
Tungsten-coated carbon tiles from a poloidal cross-section of the divertor and several types of erosion- deposition probes from the shadowed areas in the divertor were studied using heavy ion elastic recoil detection to obtain quantitative and depth-resolved deposition patterns.
Petersson, P., Rubel, M., Esser, H.G., Likonen, Jari, Koivuranta, Seppo, Widdowson, A., JET-EFDA contributors   +6 more
openaire   +2 more sources

L-H transition studies in JET-ILW

2017
Recent experiments at JET have produced new results about the L-H transition. We will present a selection here. We found the power threshold depends on H/(H+D) species concentration in a non-linear manner, with much of the variation taking place at the extremes of the mixture scan.
Solano ER, Delabie E, Hillesheim, Maggi C, Vianello N, Carvalho I, Huber A, Lerche E   +7 more
openaire   +1 more source

Time-resolved deposition in the remote region of the JET-ILW divertor: measurements and modelling

Physica Scripta, 2017
One crucial requirement for the development of fusion power is to know where, and how much, impurities collect in the machine, and how much of the fuelling isotope tritium will be trapped therein. The most relevant information on this issue comes from the operation of the Joint European Tokamak (JET), which is the world's largest operating tokamak and ...
Catarino, N, Widdowson, A, Baron-Wiechec, A, Coad, J P, Heinola, K, Rubel, M, Alves, E, Subba, F.   +7 more
openaire   +1 more source

Estimation of ELM effects on Be and W erosion at JET-ILW

Physica Scripta, 2020
I Borodkina, D Borodin, S Brezinsek, V A Kurnaev, A Huber, G Sergienko   +5 more
openaire   +1 more source

ICRH for Mitigation of Core Impurity Accumulation in JET-ILW

2014
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E A Lerche, M Goniche, P Jacquet, D Van Eester, V Bobkov, L Colas, I Monakhov, C Noble, T Blackman, F Rimini, S Brezinsek, A Czarnecka, K Crombe, C Challis, D Remi, N Fedorczak, C Giroud, J Graves, J Hobirk, E Joffrin, V Kiptily, M Lennholm, P Lomas, C Maggi, L AhoMantila, P Mantica, G Matthews, ML Mayoral, J Mlynar, P MonierGarbet, M F Nave, I M Ferreira Nunes, V Petrzilka, T Putterich, M Reich, A Shaw, A Sips, M Tsalas, M Valisa   +38 more
openaire   +2 more sources

Pedestal structure, stability and scalings in JET-ILW: the EUROfusion JET-ILW pedestal database

Nuclear Fusion, 2021
Costanza Maggi, Mathias Groth, Benoit Labit   +2 more
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