Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET)

C. Castaldo, R. Cesario, A. Cardinali, X. Litaudon, Tuomas Tala, F. Crisanti, C. Cormezano, L. Panaccione, F. Santini, P. Smeulders, A. Tuccillo, Contributors to the EFDA-JET Work Programme

    Research output: Contribution to journalArticleScientificpeer-review

    28 Citations (Scopus)

    Abstract

    A low/negative magnetic shear profile is maintained in the Joint European Torus in a plasma target with plasma current of 2.4 MA using 2.2 MW of lower hybrid (LH) power combined with neutral beam injection and ion cyclotron radiofrequency heating. In this scenario, an internal transport barrier (ITB) with time duration up to about 4 s is produced. The fraction of LH driven current is about 25% the total plasma current. During LH power application, the layer with reversed shear q-profile can be maintained in a suitable radial position to inhibit the onset of turbulence, which might otherwise drive the ITB to collapse. LH power could be used as a tool to drive moderate amounts of noninductive off-axis current and sustain high performance ITBs at high plasma current.
    Original languageEnglish
    Pages (from-to)3205-3208
    JournalPhysics of Plasmas
    Volume9
    Issue number8
    DOIs
    Publication statusPublished - 2002
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Joint European Torus
    plasma currents
    shear
    beam injection
    neutral beams
    profiles
    cyclotrons
    turbulence
    heating
    ions

    Keywords

    • Tokamak devices
    • Tokamak
    • JET
    • plasma
    • plasma toroidal confinement
    • plasma transport processes
    • plasma hybrid waves
    • plasma beam injection heating
    • plasma radiofrequency heating
    • plasma turbulence

    Cite this

    Castaldo, C. ; Cesario, R. ; Cardinali, A. ; Litaudon, X. ; Tala, Tuomas ; Crisanti, F. ; Cormezano, C. ; Panaccione, L. ; Santini, F. ; Smeulders, P. ; Tuccillo, A. ; Programme, Contributors to the EFDA-JET Work. / Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET). In: Physics of Plasmas. 2002 ; Vol. 9, No. 8. pp. 3205-3208.
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    title = "Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET)",
    abstract = "A low/negative magnetic shear profile is maintained in the Joint European Torus in a plasma target with plasma current of 2.4 MA using 2.2 MW of lower hybrid (LH) power combined with neutral beam injection and ion cyclotron radiofrequency heating. In this scenario, an internal transport barrier (ITB) with time duration up to about 4 s is produced. The fraction of LH driven current is about 25{\%} the total plasma current. During LH power application, the layer with reversed shear q-profile can be maintained in a suitable radial position to inhibit the onset of turbulence, which might otherwise drive the ITB to collapse. LH power could be used as a tool to drive moderate amounts of noninductive off-axis current and sustain high performance ITBs at high plasma current.",
    keywords = "Tokamak devices, Tokamak, JET, plasma, plasma toroidal confinement, plasma transport processes, plasma hybrid waves, plasma beam injection heating, plasma radiofrequency heating, plasma turbulence",
    author = "C. Castaldo and R. Cesario and A. Cardinali and X. Litaudon and Tuomas Tala and F. Crisanti and C. Cormezano and L. Panaccione and F. Santini and P. Smeulders and A. Tuccillo and Programme, {Contributors to the EFDA-JET Work}",
    year = "2002",
    doi = "10.1063/1.1488951",
    language = "English",
    volume = "9",
    pages = "3205--3208",
    journal = "Physics of Plasmas",
    issn = "1527-2419",
    publisher = "American Institute of Physics AIP",
    number = "8",

    }

    Castaldo, C, Cesario, R, Cardinali, A, Litaudon, X, Tala, T, Crisanti, F, Cormezano, C, Panaccione, L, Santini, F, Smeulders, P, Tuccillo, A & Programme, CTTEFDA-JETW 2002, 'Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET)', Physics of Plasmas, vol. 9, no. 8, pp. 3205-3208. https://doi.org/10.1063/1.1488951

    Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET). / Castaldo, C.; Cesario, R.; Cardinali, A.; Litaudon, X.; Tala, Tuomas; Crisanti, F.; Cormezano, C.; Panaccione, L.; Santini, F.; Smeulders, P.; Tuccillo, A.; Programme, Contributors to the EFDA-JET Work.

    In: Physics of Plasmas, Vol. 9, No. 8, 2002, p. 3205-3208.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET)

    AU - Castaldo, C.

    AU - Cesario, R.

    AU - Cardinali, A.

    AU - Litaudon, X.

    AU - Tala, Tuomas

    AU - Crisanti, F.

    AU - Cormezano, C.

    AU - Panaccione, L.

    AU - Santini, F.

    AU - Smeulders, P.

    AU - Tuccillo, A.

    AU - Programme, Contributors to the EFDA-JET Work

    PY - 2002

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    N2 - A low/negative magnetic shear profile is maintained in the Joint European Torus in a plasma target with plasma current of 2.4 MA using 2.2 MW of lower hybrid (LH) power combined with neutral beam injection and ion cyclotron radiofrequency heating. In this scenario, an internal transport barrier (ITB) with time duration up to about 4 s is produced. The fraction of LH driven current is about 25% the total plasma current. During LH power application, the layer with reversed shear q-profile can be maintained in a suitable radial position to inhibit the onset of turbulence, which might otherwise drive the ITB to collapse. LH power could be used as a tool to drive moderate amounts of noninductive off-axis current and sustain high performance ITBs at high plasma current.

    AB - A low/negative magnetic shear profile is maintained in the Joint European Torus in a plasma target with plasma current of 2.4 MA using 2.2 MW of lower hybrid (LH) power combined with neutral beam injection and ion cyclotron radiofrequency heating. In this scenario, an internal transport barrier (ITB) with time duration up to about 4 s is produced. The fraction of LH driven current is about 25% the total plasma current. During LH power application, the layer with reversed shear q-profile can be maintained in a suitable radial position to inhibit the onset of turbulence, which might otherwise drive the ITB to collapse. LH power could be used as a tool to drive moderate amounts of noninductive off-axis current and sustain high performance ITBs at high plasma current.

    KW - Tokamak devices

    KW - Tokamak

    KW - JET

    KW - plasma

    KW - plasma toroidal confinement

    KW - plasma transport processes

    KW - plasma hybrid waves

    KW - plasma beam injection heating

    KW - plasma radiofrequency heating

    KW - plasma turbulence

    U2 - 10.1063/1.1488951

    DO - 10.1063/1.1488951

    M3 - Article

    VL - 9

    SP - 3205

    EP - 3208

    JO - Physics of Plasmas

    JF - Physics of Plasmas

    SN - 1527-2419

    IS - 8

    ER -