27 research outputs found

    Resistive g-modes in a reversed field pinch plasma

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    First direct experimental evidence of high frequency, high toroidal mode number (n>20), magnetic fluctuations due to unstable resistive interchange modes (g-modes) resonant in the edge region of a reversed field pinch (RFP) plasma is presented. Experimental characterization of time and space periodicities of the modes is provided by means of highly resolved in-vessel edge and insertable magnetic diagnostics. It is found that the spectral mode properties are in good agreement with the predictions of the theoretical linear resistive magnetohydrodynamic stability analysis. A simple model is proposed for the observed saturation levels of the modes.Comment: Submitted to Physical Review Letter

    Analysis of damping rate measurements of toroidal Alfven eigenmodes on JET as a function of n: part I

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    Kink instabilities in high-beta JET advanced scenarios

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    Plasma isotopic effect on the damping rate of toroidal Alfven eigenmodes with intermediate toroidal mode numbers

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    Strike point splitting in the heat and particle flux profiles compared with the edge magnetic topology in a n=2 resonant magnetic perturbation field at JET

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    Deuterium beam acceleration with 3rd harmonic ion cyclotron resonance heating in Joint European Torus: Sawtooth stabilization and Alfven eigenmodes

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    Study of ICRH scenarios for thermal ion heating in JET D-T plasmas

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    Understanding disruptions in tokamaks

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    Large ELM-like events triggered by core MHD in JET advanced tokamak plasmas: impact on plasmas profiles, plasma-facing components and heating systems

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    Experimental results with an optimized magnetic field configuration for JET breakdown

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