A Key to Improved Ion Core Confinement in the JET Tokamak: Ion Stiffness Mitigation due to Combined Plasma Rotation and Low Magnetic Shear

Research output: Contribution to journalJournal article – Annual report year: 2011Researchpeer-review

  • Author: Mantica, P.

  • Author: Challis, C.

  • Author: Peeters, A.G.

  • Author: Strintzi, D.

  • Author: Tala, T.

  • Author: Tsalas, M.

  • Author: deVries, P.C.

  • Author: Baiocchi, B.

  • Author: Baruzzo, M.

  • Author: Bizarro, J.

  • Author: Buratti, P.

  • Author: Citrin, J.

  • Author: Colyer, G.

  • Author: Crisanti, F.

  • Author: Garbet, X.

  • Author: Giroud, C.

  • Author: Hawkes, N.

  • Author: Hobirk, J.

  • Author: Imbeaux, F.

  • Author: Joffrin, E.

  • Author: Johnson, T.

  • Author: Lerche, E.

  • Author: Mailloux, J.

  • Author: Naulin, Volker

    Plasma Physics and Technology Programme, Risø National Laboratory for Sustainable Energy, Technical University of Denmark, Denmark

  • Author: Salmi, A.

  • Author: Sozzi, C.

  • Author: Staebler, G.

  • Author: Van Eester, D.

  • Author: Versloot, T.

  • Author: Weiland, J.

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New transport experiments on JET indicate that ion stiffness mitigation in the core of a rotating plasma, as described by Mantica et al. Phys. Rev. Lett. 102 175002 (2009)] results from the combined effect of high rotational shear and low magnetic shear. The observations have important implications for the understanding of improved ion core confinement in advanced tokamak scenarios. Simulations using quasilinear fluid and gyrofluid models show features of stiffness mitigation, while nonlinear gyrokinetic simulations do not. The JET experiments indicate that advanced tokamak scenarios in future devices will require sufficient rotational shear and the capability of q profile manipulation. © 2011 American Physical Society
Original languageEnglish
JournalPhysical Review Letters
Issue number13
Pages (from-to)135004
Publication statusPublished - 2011

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Copyright 2011 American Physical Society. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Physical Society

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    Research areas

  • Fusion energy

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