Scenario preparation for the observation of alpha-driven instabilities and transport of alpha particles in JET DT plasmas
| Autor: | Dumont, R, Keeling, D, Fitzgerald, M, Challis, C, Fil, N, Giroud, C, Hawkes, N, Kiptily, V, Lennholm, M, Mailloux, J, Sharapov, S, Baruzzo, M, Piron, L, Bonofiglo, P., Dreval, M, Eriksson, J, Giacomelli, L, Nocente, M, Goloborodko, V, Johnson, T, Kazakov, Y, Lerche, E, Ferreira, J, Nabais, F, Poradziński, M, Puglia, P, Weisen, H, Solano, E, Tinguely, R |
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| Přispěvatelé: | Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Recherche sur la Fusion par confinement Magnétique (IRFM), Culham Centre for Fusion Energy (CCFE), Ricerca Formazione Innovazione (Consorzio RFX), Consiglio Nazionale delle Ricerche (CNR), Princeton Plasma Physics Laboratory (PPPL), Princeton University, Institute of Plasma Physics, NSC KIPT, Department of Physics and Astronomy, Uppsala University, Box 516, S-751 20, Uppsala, Sweden, Università degli Studi di Milano-Bicocca [Milano] (UNIMIB), Faculty of Physics [Kyiv], Taras Shevchenko National University of Kyiv, Department of Fusion Plasma Physics [Stockholm] (KTH), Royal Institute of Technology [Stockholm] (KTH ), Laboratoire de physique des plasmas de l'ERM, Laboratorium voor plasmafysica van de KMS (LPP ERM KMS), Ecole Royale Militaire / Koninklijke Militaire School (ERM KMS), Instituto de Plasmas e Fusão Nuclear [Lisboa] (IPFN), Instituto Superior Técnico, Universidade Técnica de Lisboa (IST), Institute of Plasma Physics and Laser Microfusion [Warsaw] (IPPLM), Ecole Polytechnique Fédérale de Lausanne (EPFL), Centro de Investigaciones Energéticas Medioambientales y Tecnológicas [Madrid] (CIEMAT), Massachusetts Institute of Technology (MIT), The JET contributors, European Project: 633053,H2020,EURATOM-Adhoc-2014-20,EUROfusion(2014), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Department of Physics and Astronomy, Uppsala University, Uppsala University, Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | FEC IAEA 2020-28th IAEA Fusion Energy Conference FEC IAEA 2020-28th IAEA Fusion Energy Conference, May 2021, Nice (E-Conference), France |
| Popis: | article de proceedings; International audience; In next-step fusion devices, toroidal Alfvén eigenmodes (TAEs) can be excited by the alpha particles resulting from DT fusion reactions, and may induce a significant redistribution of the energetic ions present in the discharge. During the last JET deuterium campaigns, a substantial experimental effort has been devoted to preparing scenarios maximizing the likelihood of observing alpha-driven TAEs in a future JET DT campaign. Discharges at low densities, large core temperatures associated with the presence of internal transport barriers and characterised by good energetic ion confinement have been performed. ICRH has been used in minority heating regimes to probe the TAE stability, and has resulted in the observation of core-localized modes. Significant progress has been achieved recently in order to make the scenario ready to be run in DT. This has included the test of ELM control methods, afterglow triggering using a dedicated real-time algorithm, and fuel introduction with T-compatible gas injectors. Extrapolated simulations of the best performing pulses to DT motivate the completion of this preparation effort in view of forthcoming JET DT campaigns. |
| Databáze: | OpenAIRE |
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