Perturbative studies of toroidal momentum transport using neutral beam injection modulation in the Joint European Torus: Experimental results, analysis methodology, and first principles modeling

P. Mantica, T. Tala, J.S. Ferreira, A.G. Peeters, A. Salmi, D. Strintzi, J. Weiland, M. Brix, C. Giroud, G. Corrigan, Volker Naulin, G. Tardini, K.-D. Zastrow

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Perturbative experiments have been carried out in the Joint European Torus [Fusion Sci. Technol. 53(4) (2008)] in order to identify the diffusive and convective components of toroidal momentum transport. The torque source was modulated either by modulating tangential neutral beam power or by modulating in antiphase tangential and normal beams to produce a torque perturbation in the absence of a power perturbation. The resulting periodic perturbation in the toroidal rotation velocity was modeled using time-dependent transport simulations in order to extract empirical profiles of momentum diffusivity and pinch. Details of the experimental technique, data analysis, and modeling are provided. The momentum diffusivity in the core region (0.2
    Original languageEnglish
    JournalPhysics of Plasmas
    Volume17
    Issue number9
    Pages (from-to)092505
    ISSN1070-664X
    DOIs
    Publication statusPublished - 2010

    Keywords

    • Fusion energy

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