Results 61 to 70 of about 326,732 (142)

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

Energy balance in JET

Nuclear Materials and Energy, 2017
In this paper we discuss results from the study of the energy balance in JET based on calculated heating energies, radiated energy from bolometry and tile calorimetry. Recent data enables us to be more confident in the numbers used and to exclude certain
G.F. Matthews, P. Bunting, S. Devaux, P. Drewelow, C. Guillemaut, D.B. King, E. Lerche, S. Silburn, G. Szepesi, V. Riccardo, V. Thompson   +10 more
doaj   +1 more source

Operational challenges for long pulses on JET-ILW

Plasma Physics and Controlled Fusion
Abstract The typical pulse on the JET tokamak is ∼10 s during the main phase of the discharge, however long discharge operation (>30 s) is possible with sufficient preparation and care. During the last period of JET operation in 2023 long pulses in deuterium plasmas were developed to assess the sustainment of the plasma performance ...
D B King, E Lerche, X Litaudon, S Brezinsek, E Joffrin, F Auriemma, M Beldishevski, N Balshaw, M Baruzzo, A Boboc, P Card, I S Carvalho, P J Carvalho, I Coffey, P McCullen, S Dalley, E Delabie, P Dumortier, R Felton, S Gerasimov, Z Ghani, A Goodyear, N Hawkes, R B Henriques, S Hotchin, P Jacquet, I Jepu, D Keeling, D Kinna, D Kos, E Litherland-Smith, R Lobel, P J Lomas, C Lowry, J Mailloux, M Maslov, D Matveev, A Meigs, S Menmuir, J Mitchell, I Monakhov, C Noble, M Poradzinski, F Rimini, S Silburn, E R Solano, H Sun, C Srinivasan, B Thomas, D Valcarcel, R Villari, J Waterhouse, A West, I Young   +53 more
openaire   +2 more sources

EFD-C(13)03/14 Dynamic of Density Profiles in JET During Slow L-H Transition [PDF]

, 2013
In tokamaks, the H-mode is characterized by density and temperature pedestals that build up at the L-H transition. During JET 2012 campaign, discharges were carried out with a smooth increase of heating power to compare the L-H transition threshold in ...
G. Dif-Pradalier, G. Calabro, P. Tamain, R. Sabot, E. Delabie, Hawkes, N., C.F. Maggi, Sirinelli, A., Bourdelle, C., X. Garbet, C. Bourdelle, N. Hawkes, N. Fedorzack, Ph. Ghendrih, Brix, M., Dif-Pradalier, G., Garbet, X., Tamain, P., Sabot, R., Ghendrih, P., JET-EFDA contributors, Fedorzack, N., A. Sirinelli, Solano, E., Delabie, E., Calabro, G., Maggi, C., F. Rimini, E.R. Solano, Rimini, F., M. Brix, Becoulet, M.   +31 more
core   +1 more source

Overview of interpretive modelling of fusion performance in JET DTE2 discharges with TRANSP

Nuclear Fusion, 2023
In the paper we present an overview of interpretive modelling of a database of JET-ILW 2021 D-T discharges using the TRANSP code. The main aim is to assess our capability of computationally reproducing the fusion performance of various D-T plasma ...
Ž. Štancar, K.K. Kirov, F. Auriemma, H.-T. Kim, M. Poradziński, R. Sharma, R. Lorenzini, Z. Ghani, M. Gorelenkova, F. Poli, A. Boboc, S. Brezinsek, P. Carvalho, F.J. Casson, C.D. Challis, E. Delabie, D. Van Eester, M. Fitzgerald, J.M. Fontdecaba, D. Gallart, J. Garcia, L. Garzotti, C. Giroud, A. Kappatou, Ye.O. Kazakov, D.B. King, V.G. Kiptily, D. Kos, E. Lerche, E. Litherland-Smith, C.F. Maggi, P. Mantica, M.J. Mantsinen, M. Maslov, S. Menmuir, M. Nocente, H.J.C. Oliver, S.E. Sharapov, P. Sirén, E.R. Solano, H.J. Sun, G. Szepesi, JET Contributors   +42 more
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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

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

Erosion and deposition in the JET divertor during the second ILW campaign [PDF]

, 2017
Erosion of plasma-facing materials and successive transport and redeposition of eroded material are crucial processes determining the lifetime of plasma-facing components and the trapped tritium inventory in redeposited material layers.
Widdowson, A., Baron-Wiechec, A, A Baron-Wiechec, Mayer, M., K Heinola, Ruset, C, Ruset, C., Heinola, K, Krat, S., Mayer, M, Subba, F, C Ruset, Widdowson, A, M Mayer, A Widdowson, G de Saint-Aubin, S Koivuranta, Yu Gasparyan, Likonen, J., de Saint-Aubin, G, Saint-Aubin, G., Likonen, J, Koivuranta, S, J Likonen, Krat, S, Koivuranta, S., S Krat, Baron-Wiechec, A., Heinola, K., null null, Gasparyan, Y., Gasparyan, Yu   +31 more
core   +1 more source

Spectroscopic investigation of N and Ne seeded induced detachment in JET ITER-like wall L-modes combining experiment and EDGE2D modeling

Nuclear Materials and Energy, 2019
Modeling and experimental investigation of the distribution of seeded impurities and their influence on divertor detachment in all-metal tokamaks is critical for developing reactor-scale exhaust scenarios. In this work, the degree and operating space for
B. Lomanowski, M. Carr, A. Field, M. Groth, A.E. Jaervinen, C. Lowry, A.G. Meigs, S. Menmuir, M. O'Mullane, M.L. Reinke, C.K. Stavrou, S. Wiesen   +11 more
doaj   +1 more source