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Visar resultat 21 - 25 av 26 avhandlingar som matchar ovanstående sökkriterier.

  1. 21. Diagnostics for advanced fusion plasma scenarios

    Författare :Mattias Kuldkepp; Elisabeth Rachlew-Källne; Fritz Wagner; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MSE; PEM; mirror evolution; fusion; diagnostics; plasma spectroscopy; reversed field pinch; spherical tokamak; intelligent shell; PPCD; MAST; ITER; Molecular physics; Molekylfysik;

    Sammanfattning : Over the past decade, fusion research has showed the potential of being a main candidate for energy production for future generations. Further advances in improved fusion performance are therefore vital. This thesis focuses on advanced fusion plasma scenarios and their diagnostic requirements. LÄS MER

  3. 22. Stabilisation of resistive-wall modes in fusion plasmas

    Författare :Demetrio Gregoratto; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electromagnetic feedback control; Tokamak; resistive-wall mode; reversed field pinch; MHD;

    Sammanfattning : For the success of thermonuclear fusion by magnetic confinement it is important to improve on the stability limits imposed by large-scale magnetohydrodynamics (MHD) instabilities. This thesis focuses on the stabilisation of the "resistive-wall mode" (RWM), an instability which affects high-pressure tokamaks but also Reversed Field Pinches (RFP). LÄS MER

  4. 23. Magnetohydrodynamic spectroscopy of magnetically confined plasmas

    Författare :Eva Sallander; KTH; []
    Nyckelord :EXTRAP-T2; T2R; reversed-field pinch; W7-AS; stellarator; fluctuations; magnetohydrodynamic spectroscopy; tearing mode; plasma; confinement;

    Sammanfattning : .... LÄS MER

  5. 24. Computational Studies of Magnetohydrodynamic Stability for Reversed-Field Pinches and Tokamaks

    Författare :Donghui Liu; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This work describes the ideal & resistive Magnetohydrodynamic (MHD) stability properties of Tokamak and Reversed-Field Pinch (RFP) plasmas. The first four papers are concerned with the cylindrical approximation of RFPs and tokamaks whereas the final two papers deal with a fully toroidal description. LÄS MER

  7. 25. Experimental studies of materials migration in magnetic confinement fusion devices : Novel methods for measurement of macro particle migration, transport of atomic impurities and characterization of exposed surfaces

    Författare :Igor Bykov; Henric Bergsåker; Matej Mayer; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fusion; tokamak; RFP; divertor; limiter; SOL; transport; migration; surface analysis; IBA; ion micro beam; beryllium; tritium; Physics; Fysik;

    Sammanfattning : During several decades of research and development in the field of Magnetically Confined Fusion (MCF) the preferred selection of materials for Plasma Facing Components (PFC) has changed repeatedly. Without doubt, endurance of the first wall will decide research availability and lifespan of the first International Thermonuclear Research Reactor (ITER). LÄS MER