Concept

Magnetohydrodynamic drive

Related publications (107)

Diamagnetic thresholds for sawtooth cycling in tokamak plasmas

The cycling dynamics of the internal kink mode, which drives sawtooth oscillations in tokamak plasmas, is studied using the three dimensional, non-linear magnetohydrodynamic (MHD) code XTOR-2F [H. Lütjens and J.-F. Luciani, J. Comput. Phys. 229, 8130 (2010 ...

American Institute of Physics2011

Nonthermal Melting of a Charge Density Wave in TiSe2

Paul Beaud

We use time-resolved optical reflectivity and x-ray diffraction with femtosecond resolution to study the dynamics of the structural order parameter of the charge density wave phase in TiSe2. We find that the energy density required to melt the charge densi ...

American Physical Society2011

The JET Alfven Eigenmode Local Manager for the real-time detection and tracking of a frequency-degenerate spectrum of MHD instabilities

Ambrogio Fasoli, Duccio Testa, Patrick Blanchard, Pierre Lavanchy, Theodoros Panis

We present the real-time VME system used to detect and track MHD instabilities, and particularly Alfven Eigenmodes, on the JET tokamak [J.Wesson, Tokamaks, 3rd ed., Oxford Science Publication, Oxford, 2003, p.617]. This system runs on a 1 kHz clock cycle, ...

Elsevier2011

MHD equilibrium and stability of tokamaks and RFP systems with 3D helical cores

Olivier Sauter, Jonathan Graves, Wilfred Anthony Cooper

Bifurcated magnetohydrodynamic (MHD) equilibrium states are computed for ITER hybrid scenario and RFX-mod SHAx configurations with very flat or reversed core magnetic shear conditions. In the ITER studies, the minimum inverse rotational transform qmin is n ...

IOP Publishing2011

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

Holger Reimerdes

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

Theoretical study of electronic transport in TCV ELMy H-mode

Gaël Induni

High-confinement mode (H-mode) is a promising reference scenario for ITER. But we are still facing major issues because of instabilities. They expel periodically some of the energy, which can damage the device. These instabilities are called the edge local ...

2011

Pedestal Characteristics and MHD Stability of H-Mode Plasmas in TCV

Andreas Pitzschke

The tokamak à configuration variable (TCV) is unique in its ability to create a variety of plasma shapes and to heat the electron population in high density regimes using microwave power at the third harmonic of the electron cyclotron frequency. In the fra ...

EPFL2011

A scoping study of the application of neutral beam heating on the TCV tokamak

Olivier Sauter, Basil Duval, René Chavan, Alexander Karpushov, Henri Weisen, Emiliano Fable

The TCV tokamak contributes to the physics understanding of fusion plasmas, broadening the parameter range of reactor relevant regimes, by investigations based on an extensive use of the existing main experimental tools: flexible shaping and high power rea ...

Elsevier B.V.2011

Assessment of the ITER high-frequency magnetic diagnostic set

Jean-Marc Moret, Duccio Testa, René Chavan, Matthieu Toussaint, Jonathan Bryan Lister, Thomas Maeder, Gilbert Tonetti, Albert Perez, Francisco Sanchez, Jérôme Guterl

The ITER high-frequency (HF) magnetic diagnostic system has to provide essential measurements of MHD instabilities with vertical bar delta B-MEAS/B-POL vertical bar similar to 10(-4) (similar to 1 G) for frequencies up to 2 MHz to resolve toroidal mode num ...

Elsevier2011

Assessment of the ITER High-Frequency Magnetic Diagnostic Set

Jean-Marc Moret, Duccio Testa, René Chavan, Matthieu Toussaint, Jonathan Bryan Lister, Thomas Maeder, Gilbert Tonetti, Albert Perez, Francisco Sanchez, Jérôme Guterl

The ITER high-frequency (HF) magnetic diagnostic system has to provide essential measurements of MHD instabilities with |deltaBmeas/BPOL|~1e-4 (~1G) for frequencies up to 2MHz to resolve toroidal mode numbers (n) in the range |n|=10 to |n|=50. A review of ...

2011

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