Publications related to Bootstrap current destabilization of ideal MHD modes in three-dimensional reactor configurations

Measurement and modeling of three-dimensional equilibria in DIII-D

A detailed experiment-theory comparison reveals that linear ideal MHD theory is in quantitative agreement with external magnetic and internal soft x-ray measurements of the plasma response to externally applied non-axisymmetric fields over a broad range of ...

American Institute of Physics2011

Helical ITER hybrid scenario equilibria

Olivier Sauter, Jonathan Graves, Wilfred Anthony Cooper

Numerical computations of ITER equilibria in the hybrid scenario using a three-dimensional (3D) magnetohydrodynamic equilibrium code with nested magnetic flux surfaces demonstrate the formation of internal 3D helical cores similar to saturated ideal intern ...

IOP2011

Magnetic energy flows during the current quench and termination of disruptions with runaway current plateau formation in JET and implications for ITER

James Paley

The magnetic energy balance and magnetic energy flows for plasma disruptions in which runaway plateau plasmas are formed and terminated at JET has been analysed and compared with that of runaway-free disruptions. The analysis shows that the energy loss pro ...

2011

Off-axis fishbone-like instability and excitation of resistive wall modes in JT-60U and DIII-D

Holger Reimerdes

An energetic-particle (EP)-driven off-axis-fishbone-like mode (OFM) often triggers a resistive wall mode (RWM) in JT-60U and DIII-D devices, preventing long-duration high-βN discharges. In these experiments, the EPs are energetic ions (70-85 keV) injected ...

American Institute of Physics2011

Direct two-dimensional measurements of the eld-aligned current associated with plasma blobs

Ambrogio Fasoli, Ivo Furno, Christian Gabriel Theiler, Nicola Vianello

In simple magnetized toroidal plasmas, field-aligned blobs originate from ideal interchange waves and propagate radially outward under the effect of

\grad B

and curvature induced

E \times B

drifts. We report on the first experimental two-dimensional me ...

2011

Drift stabilization of ballooning modes in a high-$\langle \beta \rangle$ LHD configuration

Jonathan Graves, Wilfred Anthony Cooper, Lucie Brocher

Ideal MHD yields at best inconclusive predictions about the stability of the LHD heliotron for

\langle \beta \rangle \geq 3\%

. We investigate the impact of the drift stabilization of ballooning modes for the inward shifted LHD configuration (vacuum magne ...

2010

Plasma rotation and momentum transport studies in the TCV tokamak based on charge exchange spectroscopy measurements

Alessandro Bortolon

Thermonuclear controlled fusion research is a highly active branch of plasma physics. The main goal is the production of energy from the fusion reaction of hydrogen isotope nuclei, the same reaction that powers stars. The most promising present approach ar ...

EPFL2009

Snowflake Divertor Plasmas on TCV

Olivier Sauter, Basil Duval, Stefano Coda, Yves Martin, Jean-Marc Moret, Ivo Furno, Benoît Labit, Federico Alberto Alfredo Felici, Richard Pitts, Antoine Pochelon, Costanza Zucca, Dávid Wágner, Francesco Piras, János Márki, Andreas Pitzschke, Attila Bencze

Starting from a standard single null X-point configuration, a second order null divertor (snowflake (SF)) has been successfully created on the Tokamak a Configuration Variable (TCV) tokamak. The magnetic properties of this innovative configuration have bee ...

EPS2009

Sawtooth-Control Mechanism using Toroidally Propagating Ion-Cyclotron-ResonanceWaves in Tokamaks

Stefano Coda, Jonathan Graves

The sawtooth control mechanism in plasmas employing off-axis toroidally propagating ion cyclotron resonance waves in tokamaks is reinvestigated. The radial drift excursion of energetic passing ions distributed asymmetrically in the velocity parallel to the ...

American Physical Society2009

Sawtooth-Control Mechanism using Toroidally Propagating Ion-Cyclotron-Resonance Waves in Tokamaks

Stefano Coda, Jonathan Graves

The sawtooth control mechanism in plasmas employing off-axis toroidally propagating ion cyclotron resonance waves in tokamaks is reinvestigated. The radial drift excursion of energetic passing ions distributed asymmetrically in the velocity parallel to the ...

2009

Bootstrap current destabilization of ideal MHD modes in three-dimensional reactor configurations

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Measurement and modeling of three-dimensional equilibria in DIII-D

Helical ITER hybrid scenario equilibria

Magnetic energy flows during the current quench and termination of disruptions with runaway current plateau formation in JET and implications for ITER

Off-axis fishbone-like instability and excitation of resistive wall modes in JT-60U and DIII-D

Direct two-dimensional measurements of the eld-aligned current associated with plasma blobs

Drift stabilization of ballooning modes in a high-$\langle \beta \rangle$ LHD configuration

Plasma rotation and momentum transport studies in the TCV tokamak based on charge exchange spectroscopy measurements

Snowflake Divertor Plasmas on TCV

Sawtooth-Control Mechanism using Toroidally Propagating Ion-Cyclotron-ResonanceWaves in Tokamaks

Sawtooth-Control Mechanism using Toroidally Propagating Ion-Cyclotron-Resonance Waves in Tokamaks

Measurement and modeling of three-dimensional equilibria in DIII-D

Plasma rotation and momentum transport studies in the TCV tokamak based on charge exchange spectroscopy measurements

Drift stabilization of ballooning modes in a high-$\langle \beta \rangle$ LHD configuration

Off-axis fishbone-like instability and excitation of resistive wall modes in JT-60U and DIII-D

Direct two-dimensional measurements of the eld-aligned current associated with plasma blobs

Helical ITER hybrid scenario equilibria

Magnetic energy flows during the current quench and termination of disruptions with runaway current plateau formation in JET and implications for ITER

Sawtooth-Control Mechanism using Toroidally Propagating Ion-Cyclotron-ResonanceWaves in Tokamaks

Sawtooth-Control Mechanism using Toroidally Propagating Ion-Cyclotron-Resonance Waves in Tokamaks

Snowflake Divertor Plasmas on TCV