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DOE OSTI · 2547003

Tungsten control in long pulse operation: feedback from WEST to ITER

Maget, P. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)] (ORCID:0000000287468102)·Manas, P. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)]·Morales, J. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)]·Afonin, K. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)] (ORCID:0000000254792897)·Bourdelle, C. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)] (ORCID:0000000240968978)·Bucalossi, J. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)]·Ciraolo, G. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)]·Coelho, R. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)] (ORCID:0000000211271661)·Corre, Y. [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)] (ORCID:0000000265666116)·Dominski, J. [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)] (ORCID:0000000193802544)·Dumont, R. [Aix-Marseille Univ., Marseille (France); Centre National de la Recherche Scientifique (CNRS) (France)] (ORCID:000000021030138X)·Ekedahl, A. [Aix-Marseille Univ., Marseille (France); Centre National de la Recherche Scientifique (CNRS) (France)] (ORCID:0000000203765119)·Fedorczak, N. [Aix-Marseille Univ., Marseille (France); Centre National de la Recherche Scientifique (CNRS) (France)]·Fonghetti, T. [Aix-Marseille Univ., Marseille (France); Centre National de la Recherche Scientifique (CNRS) (France)] (ORCID:0009000349485766)·Gallo, A. [Aix-Marseille Univ., Marseille (France); Centre National de la Recherche Scientifique (CNRS) (France)] (ORCID:0000000274727830)·Gaspar, J. [Aix-Marseille Univ., Marseille (France); Centre National de la Recherche Scientifique (CNRS) (France)] (ORCID:0000000301041616)·Guillemaut, C. [Univ. of Tennessee, Knoxville, TN (United States)]·Grosjean, A. [Univ. of Tennessee, Knoxville, TN (United States)] (ORCID:0000000221665621)·Gunn, J. [Association Eurofusion, Brussels (Belgium)]·Hillairet, J. [Association Eurofusion, Brussels (Belgium)] (ORCID:0000000210736383)·Lerche, E. [Association Eurofusion, Brussels (Belgium)]·Lunsford, R. [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)] (ORCID:0000000335886801)·Rivals, N. [Culham Science Centre, Abingdon (United Kingdom)] (ORCID:0000000244675857)·Silburn, S. [Culham Science Centre, Abingdon (United Kingdom)] (ORCID:0000000231115113)·Tsitrone, E. [ITER International Organization, Saint Paul Lez Durance (France)]·Wauters, T. [ITER International Organization, Saint Paul Lez Durance (France)] (ORCID:0000000229417817)
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Abstract

The full W environment that is now foreseen for ITER puts strong emphasis on experimental results obtained in present devices in similar conditions. In this context, the WEST tokamak is well equipped to bring key contributions to the preparation of ITER operation, thanks to its capability to perform long pulses in dominant electron heating, torque-free scheme based on RF systems, and its ITER-grade actively cooled divertor. Recent results of interest cover the understanding of tungsten contamination and the evaluation of conditioning methods, the feedback on the current ramp-up phase, and the ageing of the ITER divertor components in L-mode attached condition. Further, new directions are being explored, in particular low divertor temperature operation that should be the normal operating regime of ITER. We also report on tungsten peaking physics, and the role of light impurity content.

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Maget, P. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)] (ORCID:0000000287468102), Manas, P. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)], Morales, J. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)], Afonin, K. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)] (ORCID:0000000254792897), Bourdelle, C. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)] (ORCID:0000000240968978), Bucalossi, J. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)], Ciraolo, G. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)], Coelho, R. [CEA, IRFM, Saint Paul Lez Durance (France); Univ. of Lisbon (Portugal)] (ORCID:0000000211271661), Corre, Y. [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)] (ORCID:0000000265666116), Dominski, J. [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)] (ORCID:0000000193802544), Dumont, R. [Aix-Marseille Univ., Marseille (France); Centre National de la Recherche Scientifique (CNRS) (France)] (ORCID:000000021030138X), Ekedahl, A. [Aix-Marseille Univ., Marseille (France); Centre National de la Recherche Scientifique (CNRS) (France)] (ORCID:0000000203765119), Fedorczak, N. [Aix-Marseille Univ., Marseille (France); Centre National de la Recherche Scientifique (CNRS) (France)], Fonghetti, T. [Aix-Marseille Univ., Marseille (France); Centre National de la Recherche Scientifique (CNRS) (France)] (ORCID:0009000349485766), Gallo, A. [Aix-Marseille Univ., Marseille (France); Centre National de la Recherche Scientifique (CNRS) (France)] (ORCID:0000000274727830), Gaspar, J. [Aix-Marseille Univ., Marseille (France); Centre National de la Recherche Scientifique (CNRS) (France)] (ORCID:0000000301041616), Guillemaut, C. [Univ. of Tennessee, Knoxville, TN (United States)], Grosjean, A. [Univ. of Tennessee, Knoxville, TN (United States)] (ORCID:0000000221665621), Gunn, J. [Association Eurofusion, Brussels (Belgium)], Hillairet, J. [Association Eurofusion, Brussels (Belgium)] (ORCID:0000000210736383), Lerche, E. [Association Eurofusion, Brussels (Belgium)], Lunsford, R. [Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)] (ORCID:0000000335886801), Rivals, N. [Culham Science Centre, Abingdon (United Kingdom)] (ORCID:0000000244675857), Silburn, S. [Culham Science Centre, Abingdon (United Kingdom)] (ORCID:0000000231115113), Tsitrone, E. [ITER International Organization, Saint Paul Lez Durance (France)], Wauters, T. [ITER International Organization, Saint Paul Lez Durance (France)] (ORCID:0000000229417817). 2025-03-06. Tungsten control in long pulse operation: feedback from WEST to ITER. https://doi.org/10.1088/1361-6587%2Fadba0d

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