Identification of the ubiquitous Coriolis momentum pinch in JET tokamak plasmas: Letter

H. Weisen, Y. Camenen, A. Salmi, T.W. Versloot, P.C. de Vries, M. Maslov, Tuomas Tala, M. Beurskens, C. Giroud, JET-EFDA collaborators

    Research output: Contribution to journalArticleScientificpeer-review

    9 Citations (Scopus)

    Abstract

    A broad survey of the experimental database of neutral beam heated plasmas in the JET tokamak has established the theoretically expected ubiquity, in rotating plasmas, of a convective transport mechanism which has its origin in the vertical particle drift resulting from the Coriolis force. This inward convection, or pinch, leads to inward transport of toroidal angular momentum and is characterized by pinch numbers RVφ, which rise from near unity at r/a ≈ 0.25 to around 5 at r/a ≈ 0.85. Linear gyrokinetic calculations of the Coriolis pinch number and the Prandtl number χφi are in good agreement with the experimental observations, with similar dependences on plasma parameters. The data, however, do not rule out contributions from different processes, such as residual stresses.
    Original languageEnglish
    Article number042001
    Number of pages6
    JournalNuclear Fusion
    Volume52
    Issue number4
    DOIs
    Publication statusPublished - 2012
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    rotating plasmas
    momentum
    neutral beams
    Prandtl number
    residual stress
    unity
    convection
    angular momentum

    Cite this

    Weisen, H., Camenen, Y., Salmi, A., Versloot, T. W., de Vries, P. C., Maslov, M., ... JET-EFDA collaborators (2012). Identification of the ubiquitous Coriolis momentum pinch in JET tokamak plasmas: Letter. Nuclear Fusion, 52(4), [042001]. https://doi.org/10.1088/0029-5515/52/4/042001
    Weisen, H. ; Camenen, Y. ; Salmi, A. ; Versloot, T.W. ; de Vries, P.C. ; Maslov, M. ; Tala, Tuomas ; Beurskens, M. ; Giroud, C. ; JET-EFDA collaborators. / Identification of the ubiquitous Coriolis momentum pinch in JET tokamak plasmas : Letter. In: Nuclear Fusion. 2012 ; Vol. 52, No. 4.
    @article{e4c0d70b24a9424f85492f500fc64c29,
    title = "Identification of the ubiquitous Coriolis momentum pinch in JET tokamak plasmas: Letter",
    abstract = "A broad survey of the experimental database of neutral beam heated plasmas in the JET tokamak has established the theoretically expected ubiquity, in rotating plasmas, of a convective transport mechanism which has its origin in the vertical particle drift resulting from the Coriolis force. This inward convection, or pinch, leads to inward transport of toroidal angular momentum and is characterized by pinch numbers RV/χφ, which rise from near unity at r/a ≈ 0.25 to around 5 at r/a ≈ 0.85. Linear gyrokinetic calculations of the Coriolis pinch number and the Prandtl number χφ/χi are in good agreement with the experimental observations, with similar dependences on plasma parameters. The data, however, do not rule out contributions from different processes, such as residual stresses.",
    author = "H. Weisen and Y. Camenen and A. Salmi and T.W. Versloot and {de Vries}, P.C. and M. Maslov and Tuomas Tala and M. Beurskens and C. Giroud and {JET-EFDA collaborators}",
    year = "2012",
    doi = "10.1088/0029-5515/52/4/042001",
    language = "English",
    volume = "52",
    journal = "Nuclear Fusion",
    issn = "0029-5515",
    publisher = "Institute of Physics IOP",
    number = "4",

    }

    Weisen, H, Camenen, Y, Salmi, A, Versloot, TW, de Vries, PC, Maslov, M, Tala, T, Beurskens, M, Giroud, C & JET-EFDA collaborators 2012, 'Identification of the ubiquitous Coriolis momentum pinch in JET tokamak plasmas: Letter', Nuclear Fusion, vol. 52, no. 4, 042001. https://doi.org/10.1088/0029-5515/52/4/042001

    Identification of the ubiquitous Coriolis momentum pinch in JET tokamak plasmas : Letter. / Weisen, H.; Camenen, Y.; Salmi, A.; Versloot, T.W.; de Vries, P.C.; Maslov, M.; Tala, Tuomas; Beurskens, M.; Giroud, C.; JET-EFDA collaborators.

    In: Nuclear Fusion, Vol. 52, No. 4, 042001, 2012.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Identification of the ubiquitous Coriolis momentum pinch in JET tokamak plasmas

    T2 - Letter

    AU - Weisen, H.

    AU - Camenen, Y.

    AU - Salmi, A.

    AU - Versloot, T.W.

    AU - de Vries, P.C.

    AU - Maslov, M.

    AU - Tala, Tuomas

    AU - Beurskens, M.

    AU - Giroud, C.

    AU - JET-EFDA collaborators

    PY - 2012

    Y1 - 2012

    N2 - A broad survey of the experimental database of neutral beam heated plasmas in the JET tokamak has established the theoretically expected ubiquity, in rotating plasmas, of a convective transport mechanism which has its origin in the vertical particle drift resulting from the Coriolis force. This inward convection, or pinch, leads to inward transport of toroidal angular momentum and is characterized by pinch numbers RV/χφ, which rise from near unity at r/a ≈ 0.25 to around 5 at r/a ≈ 0.85. Linear gyrokinetic calculations of the Coriolis pinch number and the Prandtl number χφ/χi are in good agreement with the experimental observations, with similar dependences on plasma parameters. The data, however, do not rule out contributions from different processes, such as residual stresses.

    AB - A broad survey of the experimental database of neutral beam heated plasmas in the JET tokamak has established the theoretically expected ubiquity, in rotating plasmas, of a convective transport mechanism which has its origin in the vertical particle drift resulting from the Coriolis force. This inward convection, or pinch, leads to inward transport of toroidal angular momentum and is characterized by pinch numbers RV/χφ, which rise from near unity at r/a ≈ 0.25 to around 5 at r/a ≈ 0.85. Linear gyrokinetic calculations of the Coriolis pinch number and the Prandtl number χφ/χi are in good agreement with the experimental observations, with similar dependences on plasma parameters. The data, however, do not rule out contributions from different processes, such as residual stresses.

    U2 - 10.1088/0029-5515/52/4/042001

    DO - 10.1088/0029-5515/52/4/042001

    M3 - Article

    VL - 52

    JO - Nuclear Fusion

    JF - Nuclear Fusion

    SN - 0029-5515

    IS - 4

    M1 - 042001

    ER -