Overview of ASDEX Upgrade results: Development of integrated operating scenarios for ITER

S. Günter (Corresponding Author), Jari Likonen, et al.

    Research output: Contribution to journalArticleScientificpeer-review

    21 Citations (Scopus)

    Abstract

    Significant progress has been made on ASDEX Upgrade during the last two years in the basic understanding of transport, in the extension of the improved H-mode in parameter space and towards an integrated operating scenario and in the development of control methods for major performance limiting instabilities. The important features were the understanding of particle transport and the control of impurity accumulation based on it, the satisfactory operation with predominantly tungsten-clad walls, the improved H-mode operation over density ranges and for temperature ratios covering (non-simultaneously) the ITER requirements on ν*, n/nGW and Te/Ti, the ELM frequency control by pellet injection and the optimization of NTM suppression by DC-ECCD through variation of the launching angle. From these experiments an integrated scenario has emerged which extrapolates to a 50% improvement in n T τ or a 30% reduction of the required current when compared with the ITER base-line assumptions, with moderately peaked electron and controllable high-Z density profiles.
    Original languageEnglish
    Pages (from-to)S98 - S108
    Number of pages11
    JournalNuclear Fusion
    Volume45
    Issue number10
    DOIs
    Publication statusPublished - 2005
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    frequency control
    temperature ratio
    launching
    pellets
    tungsten
    coverings
    direct current
    retarding
    injection
    impurities
    requirements
    optimization
    profiles
    electrons

    Keywords

    • JET
    • plasma
    • Tokamak
    • fusion energy
    • fusion reactors
    • ITER

    Cite this

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    title = "Overview of ASDEX Upgrade results: Development of integrated operating scenarios for ITER",
    abstract = "Significant progress has been made on ASDEX Upgrade during the last two years in the basic understanding of transport, in the extension of the improved H-mode in parameter space and towards an integrated operating scenario and in the development of control methods for major performance limiting instabilities. The important features were the understanding of particle transport and the control of impurity accumulation based on it, the satisfactory operation with predominantly tungsten-clad walls, the improved H-mode operation over density ranges and for temperature ratios covering (non-simultaneously) the ITER requirements on ν*, n/nGW and Te/Ti, the ELM frequency control by pellet injection and the optimization of NTM suppression by DC-ECCD through variation of the launching angle. From these experiments an integrated scenario has emerged which extrapolates to a 50{\%} improvement in n T τ or a 30{\%} reduction of the required current when compared with the ITER base-line assumptions, with moderately peaked electron and controllable high-Z density profiles.",
    keywords = "JET, plasma, Tokamak, fusion energy, fusion reactors, ITER",
    author = "S. G{\"u}nter and Jari Likonen and {et al.}",
    year = "2005",
    doi = "10.1088/0029-5515/45/10/S08",
    language = "English",
    volume = "45",
    pages = "S98 -- S108",
    journal = "Nuclear Fusion",
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    Overview of ASDEX Upgrade results : Development of integrated operating scenarios for ITER. / Günter, S. (Corresponding Author); Likonen, Jari; et al.

    In: Nuclear Fusion, Vol. 45, No. 10, 2005, p. S98 - S108.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Overview of ASDEX Upgrade results

    T2 - Development of integrated operating scenarios for ITER

    AU - Günter, S.

    AU - Likonen, Jari

    AU - et al., null

    PY - 2005

    Y1 - 2005

    N2 - Significant progress has been made on ASDEX Upgrade during the last two years in the basic understanding of transport, in the extension of the improved H-mode in parameter space and towards an integrated operating scenario and in the development of control methods for major performance limiting instabilities. The important features were the understanding of particle transport and the control of impurity accumulation based on it, the satisfactory operation with predominantly tungsten-clad walls, the improved H-mode operation over density ranges and for temperature ratios covering (non-simultaneously) the ITER requirements on ν*, n/nGW and Te/Ti, the ELM frequency control by pellet injection and the optimization of NTM suppression by DC-ECCD through variation of the launching angle. From these experiments an integrated scenario has emerged which extrapolates to a 50% improvement in n T τ or a 30% reduction of the required current when compared with the ITER base-line assumptions, with moderately peaked electron and controllable high-Z density profiles.

    AB - Significant progress has been made on ASDEX Upgrade during the last two years in the basic understanding of transport, in the extension of the improved H-mode in parameter space and towards an integrated operating scenario and in the development of control methods for major performance limiting instabilities. The important features were the understanding of particle transport and the control of impurity accumulation based on it, the satisfactory operation with predominantly tungsten-clad walls, the improved H-mode operation over density ranges and for temperature ratios covering (non-simultaneously) the ITER requirements on ν*, n/nGW and Te/Ti, the ELM frequency control by pellet injection and the optimization of NTM suppression by DC-ECCD through variation of the launching angle. From these experiments an integrated scenario has emerged which extrapolates to a 50% improvement in n T τ or a 30% reduction of the required current when compared with the ITER base-line assumptions, with moderately peaked electron and controllable high-Z density profiles.

    KW - JET

    KW - plasma

    KW - Tokamak

    KW - fusion energy

    KW - fusion reactors

    KW - ITER

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    DO - 10.1088/0029-5515/45/10/S08

    M3 - Article

    VL - 45

    SP - S98 - S108

    JO - Nuclear Fusion

    JF - Nuclear Fusion

    SN - 0029-5515

    IS - 10

    ER -