Interpretative and predictive modelling of Joint European Torus collisionality scans

Frida Eriksson, Emil Fransson, Michael Oberparleiter, Henrik Nordman, P. Strand, A. Salmi, T. Tala

    Research output: Contribution to journalArticleScientificpeer-review

    1 Citation (Scopus)

    Abstract

    Transport modelling of Joint European Torus (JET) dimensionless collisionality scaling experiments in various operational scenarios is presented. Interpretative simulations at a fixed radial position are combined with predictive JETTO simulations of temperatures and densities, using the TGLF transport model. The model includes electromagnetic effects and collisions as well as E×B shear in Miller geometry. Focus is on particle transport and the role of the neutral beam injection (NBI) particle source for the density peaking. The experimental 3-point collisionality scans include L-mode, and H-mode (D and H and higher beta D plasma) plasmas in a total of 12 discharges. Experimental results presented in (Tala et al 2017 44th EPS Conf.) indicate that for the H-mode scans, the NBI particle source plays an important role for the density peaking, whereas for the L-mode scan, the influence of the particle source is small. In general, both the interpretative and predictive transport simulations support the experimental conclusions on the role of the NBI particle source for the 12 JET discharges.
    Original languageEnglish
    Article number115004
    JournalPlasma Physics and Controlled Fusion
    Volume61
    Issue number11
    DOIs
    Publication statusPublished - 23 Sep 2019
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Joint European Torus
    beam injection
    Magnetoelectric effects
    Plasmas
    neutral beams
    Geometry
    simulation
    Experiments
    Temperature
    electromagnetism
    shear
    scaling
    collisions
    geometry

    Keywords

    • gyro-fluid
    • ITG
    • modelling
    • particle transport
    • turbulence

    Cite this

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    title = "Interpretative and predictive modelling of Joint European Torus collisionality scans",
    abstract = "Transport modelling of Joint European Torus (JET) dimensionless collisionality scaling experiments in various operational scenarios is presented. Interpretative simulations at a fixed radial position are combined with predictive JETTO simulations of temperatures and densities, using the TGLF transport model. The model includes electromagnetic effects and collisions as well as E×B shear in Miller geometry. Focus is on particle transport and the role of the neutral beam injection (NBI) particle source for the density peaking. The experimental 3-point collisionality scans include L-mode, and H-mode (D and H and higher beta D plasma) plasmas in a total of 12 discharges. Experimental results presented in (Tala et al 2017 44th EPS Conf.) indicate that for the H-mode scans, the NBI particle source plays an important role for the density peaking, whereas for the L-mode scan, the influence of the particle source is small. In general, both the interpretative and predictive transport simulations support the experimental conclusions on the role of the NBI particle source for the 12 JET discharges.",
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    Interpretative and predictive modelling of Joint European Torus collisionality scans. / Eriksson, Frida; Fransson, Emil; Oberparleiter, Michael; Nordman, Henrik; Strand, P.; Salmi, A.; Tala, T.

    In: Plasma Physics and Controlled Fusion, Vol. 61, No. 11, 115004, 23.09.2019.

    Research output: Contribution to journalArticleScientificpeer-review

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    AU - Eriksson, Frida

    AU - Fransson, Emil

    AU - Oberparleiter, Michael

    AU - Nordman, Henrik

    AU - Strand, P.

    AU - Salmi, A.

    AU - Tala, T.

    PY - 2019/9/23

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    N2 - Transport modelling of Joint European Torus (JET) dimensionless collisionality scaling experiments in various operational scenarios is presented. Interpretative simulations at a fixed radial position are combined with predictive JETTO simulations of temperatures and densities, using the TGLF transport model. The model includes electromagnetic effects and collisions as well as E×B shear in Miller geometry. Focus is on particle transport and the role of the neutral beam injection (NBI) particle source for the density peaking. The experimental 3-point collisionality scans include L-mode, and H-mode (D and H and higher beta D plasma) plasmas in a total of 12 discharges. Experimental results presented in (Tala et al 2017 44th EPS Conf.) indicate that for the H-mode scans, the NBI particle source plays an important role for the density peaking, whereas for the L-mode scan, the influence of the particle source is small. In general, both the interpretative and predictive transport simulations support the experimental conclusions on the role of the NBI particle source for the 12 JET discharges.

    AB - Transport modelling of Joint European Torus (JET) dimensionless collisionality scaling experiments in various operational scenarios is presented. Interpretative simulations at a fixed radial position are combined with predictive JETTO simulations of temperatures and densities, using the TGLF transport model. The model includes electromagnetic effects and collisions as well as E×B shear in Miller geometry. Focus is on particle transport and the role of the neutral beam injection (NBI) particle source for the density peaking. The experimental 3-point collisionality scans include L-mode, and H-mode (D and H and higher beta D plasma) plasmas in a total of 12 discharges. Experimental results presented in (Tala et al 2017 44th EPS Conf.) indicate that for the H-mode scans, the NBI particle source plays an important role for the density peaking, whereas for the L-mode scan, the influence of the particle source is small. In general, both the interpretative and predictive transport simulations support the experimental conclusions on the role of the NBI particle source for the 12 JET discharges.

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