Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloProgress and challenges in understanding core transport in tokamaks in support to ITER operations
Anno di pubblicazione2020
Formato-
Autore/iMantica P.; Angioni C.; Bonanomi N.; Citrin J.; Grierson B.A.; Koechl F.; Mariani A.; Staebler G.M.
Affiliazioni autoriIstituto per la Scienza e Tecnologia Dei Plasmi, Consiglio Nazionale Delle Ricerche, Milano, Istituto per la Scienza e Tecnologia dei Plasmi, Consiglio Nazionale delle Ricerche, Milano, Italy, , Italy; Max-Planck-Institut für Plasmaphysik, Garching, D-85748, Max-Planck-Institut für Plasmaphysik, D-85748 Garching, Germany, , Germany; DIFFER - Dutch Institute for Fundamental Energy Research, Eindhoven, DIFFER - Dutch Institute for Fundamental Energy Research, Eindhoven, The Netherlands, , Netherlands; Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ, 08543, Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543, United States of America, , , United States; Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ, 08543, Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543, United States of America, , , United States; UKAEA Culham Centre for Fusion Energy, Abingdon, Oxon, OX14 3DB, UKAEA Culham Centre for Fusion Energy, Abingdon, Oxon, OX14 3DB, United Kingdom, , United Kingdom; General Atomics, San Diego, CA, 92186-5608, General Atomics, San Diego, CA 92186-5608, United States of America, , United States
Autori CNR e affiliazioni
  • NICOLA BONANOMI
  • ALBERTO MARIANI
  • PAOLA MANTICA
Lingua/e
  • inglese
AbstractFusion performance in tokamaks depends on the core and edge regions as well as on their nonlinear feedbacks. The achievable degree of edge confinement under the constraints of power handling in presence of a metallic wall is still an open question. Therefore, any improvement in the core temperature and density peaking is crucial for achieving target performance. This has motivated further progress in understanding core turbulent transport mechanisms, to help scenario development in present devices and improve predictive tools for ITER operations. In the last two decades, detailed experiments and their interpretation via the gyrokinetic theory of turbulent transport have led to a satisfactory level of understanding of the heat, particle, and momentum transport channels and of their mutual interactions. This paper presents some highlights of the progress, which stems from joint work of several devices and theory groups, in Europe and worldwide within the International Tokamak Physics Activities framework. On the other hand, the achievement of predictive capabilities of plasma profiles via integrated modeling, which also accounts for the nonlinear interactions inherent to the multi-channel nature of transport, is a priority in view of ITER. This requires using faster, reduced models, and the extent to which they capture the complex physics described by nonlinear gyrokinetics must be carefully evaluated. Present quasi-linear models match well experiments in baseline scenarios, and thus offer reliable predictions for the ITER reference scenario, but have issues in advanced scenarios. Some of these challenges are examined and discussed. In the longer term, advances in high performance computing will continue to drive physics discovery through increasingly complex gyrokinetic simulations, allowing also further development of reduced models. The development of neural network surrogate models is another recent advance that bridges the gap towards physics-based fast models for optimization and control applications.
Lingua abstractinglese
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RivistaPlasma physics and controlled fusion (Print)
Attiva dal 1984
Editore: Institute of Physics, - Bristol
Paese di pubblicazione: Regno Unito
Lingua: inglese
ISSN: 0741-3335
Titolo chiave: Plasma physics and controlled fusion (Print)
Titolo proprio: Plasma physics and controlled fusion. (Print)
Titolo abbreviato: Plasma phys. control. fusion (Print)
Numero volume della rivista62
Fascicolo della rivista1
DOI10.1088/1361-6587/ab5ae1
Verificato da refereeSì: Internazionale
Stato della pubblicazionePublished version
Indicizzazione (in banche dati controllate)
  • Scopus (Codice:2-s2.0-85079570170)
Parole chiaveturbulent transport, ITER modelling
Link (URL, URI)http://www.scopus.com/inward/record.url?eid=2-s2.0-85079570170&partnerID=q2rCbXpz
Titolo parallelo-
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Scadenza embargo-
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Note/Altre informazioni-
Strutture CNR
  • ISTP — Istituto per la Scienza e Tecnologia dei Plasmi
Moduli/Attività/Sottoprogetti CNR
  • DIT.AD020.001.001 : EUROfusion
Progetti Europei-
Allegati
Articolo pubblicato (documento privato )
Tipo documento: application/pdf