Results 51 to 60 of about 242,206 (161)

EFD-C(13)03/11 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.
T. Eich, Wischmeier, M., Lowry, C., C. Giroud, M. Beurskens, Giroud, C., Devynck, P., G. Maddison, Brezinsek, S., L. Garzotti, S. Jachmich, McCormick, K., A. Meigs, Meigs, A., M. Wischmeier, Beurskens, M., Järvinen, A., S. Brezinsek, Eich, T., Stamp, M., P. Devynck, C. Lowry, Jachmich, S., Maddison, G., A. Järvinen, JET EFDA contributors, Garzotti, L., K. McCormick, M. Stamp, S. Marsen, F. Rimini, Rimini, F., Marsen, S.   +32 more
core   +1 more source

ICRH operations and experiments during the JET-ILW tritium and DTE2 campaigns

AIP Conference Proceedings, 2023
24TH TOPICAL CONFERENCE ON RADIO-FREQUENCY POWER IN PLASMAS, Annapolis, USA; AIP conference proceedings 2984, 030003 (2023).
Jacquet P., Lerche E., Mantsinen M., Van Eester D., Kirov K., Mantica P., Gallart D., Taylor D., Kazakov Y., Monakhov I., Noble C., Dumortier P., Sheikh H., Challis C., Hobirk J., Kappatou A., Maslov M., King D., Keeling D., Rimini F., Frigione D., Garzotti L., Lomas P., Lowry C., Carvalho I., Baruzzo M., Reux C., Lenholm M., Henriques R., De la Luna E., Mailloux J., Maggi C., Garcia J., Chomiczewska A., Gromelski W., Bobkov V., Milanesio D., Colas L., Tierens W., Otin R., Klepper C., Delabie E., Dumont R., Eriksson J., Kiptily V., Menmuir S., Nocente M., Patel A., Pucella G., Rigamonti D., Tardocchi M., Silburn S., Siren P., Solano E., Stancar Z., Valisa M., Douai D., Matveev D., Wauters T., JET contributors.   +59 more
openaire   +3 more sources

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

EFD-P(13)60 ITER-Like Current Ramps in JET with ILW: Experiments, Modelling and Consequences for ITER

, 2013
Since the ITER-like wall in JET (JET-ILW) came into operation, dedicated ITER-like plasma current (Ip) ramp-up (RU) and ramp-down (RD) experiments have been performed and matched to similar discharges with the carbon wall (JET-C).
G. Calabrò, JET EFDA contributors, C.F. Maggi, J. Mlynar, F.G. Rimini, G.M.D. Hogeweij, G.M. De Tommasi, E. Joffrin, A.C.C. Sips, Th. Pütterich, A. Loarte, F. Maviglia   +11 more
core   +1 more source

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

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

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