Publications related to Analytic stability criteria for edge MHD oscillations in high performance ELM free tokamak regimes

Plasma turbulence in the scrape-off layer of tokamak devices

Plasma turbulence is explored in the scrape-off layer of tokamak devices using three-dimensional global two-fluid simulations. Two transport regimes are discussed: one in which the turbulent fluctuations saturate nonlinearly due to the Kelvin-Helmholtz ins ...

American Institute of Physics2013

Feedback control of the proximity to marginal RWM stability using active MHD spectroscopy

Holger Reimerdes

DIII-D experiments yield the first proof-of-principle results in feedback control of the proximity to the resistive wall mode (RWM) stability boundary using an active MHD spectroscopic stability measurement and neutral beam injection heating. In contrast t ...

2012

Direct Measurements of the Damping of Alfvén Eigenmodes for an Assessment of their Stability Limits in Tokamak Plasmas

Theodoros Panis

Direct damping rate measurements of AEs are obtained using the active MHD spectroscopy system installed on the JET tokamak. The system was recently equipped with new antennas, designed to study especially the modes of intermediate toroidal mode number n, | ...

EPFL2010

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

Active excitation and damping rate measurement of intermediate-n Toroidal Alfvén Eigenmodes in JET, C-Mod and MAST plasmas

Ambrogio Fasoli, Duccio Testa, Theodoros Panis

The stability properties of Alfvén Eigenmodes (AEs) are investigated directly using external antenna excitation and detection of stable modes in a variety of plasma configurations in different devices. Dedicated methods to measure the AE damping rate separ ...

2010

The Effect of Plasma Profile Variation on the Stability of the n = 1 Internal Kink Mode in Rotating Tokamak Plasmas

Jonathan Graves

The sensitivity of the stability of the ideal n = 1 internal kink mode to variations in the plasma profiles is analysed both analytically and numerically in rotating tokamak plasmas. These stability analyses have been carried out including the centrifugal ...

2010

The effect of plasma profile variation on the stability of the n=1 internal kink mode in rotating tokamak plasmas

Jonathan Graves

The sensitivity of the stability of the ideal n = 1 internal kink mode to variations in the plasma profiles is analysed both analytically and numerically in rotating tokamak plasmas. These stability analyses have been carried out including the centrifugal ...

2010

Importance of centrifugal effects for the internal kink mode stability in toroidally rotating tokamak plasmas

Jonathan Graves

Analytical theory and two different magnetohydrodynamical stability codes are used in a study of the effects of toroidal plasma rotation on the stability of the ideal, internal kink mode in tokamaks. The focus of the paper is on the role that the centrifug ...

AIP2009

Edge kink/ballooning mode stability in tokamaks with separatrix

Olivier Sauter, Yves Martin, Laurent Villard, Andrei Martynov

Stability limits against external kink modes driven by large current density and pressure gradient values in the pedestal region are investigated for tokamak plasmas with separatrix. Stability diagrams for modes with different toroidal wave numbers under v ...

Institute of Physics2006

Kink instability of flux ropes anchored at one end and free at the other

Ivo Furno

The kink instability of a magnetized plasma column (flux rope) is a fundamental process observed in laboratory and in natural plasmas. Previous theoretical, experimental, and observational work has focused either on the case of periodic (infinite) ropes (r ...

2006

Analytic stability criteria for edge MHD oscillations in high performance ELM free tokamak regimes

Graph Chatbot

Chat with Graph Search

Plasma turbulence in the scrape-off layer of tokamak devices

Feedback control of the proximity to marginal RWM stability using active MHD spectroscopy

Direct Measurements of the Damping of Alfvén Eigenmodes for an Assessment of their Stability Limits in Tokamak Plasmas

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

Active excitation and damping rate measurement of intermediate-n Toroidal Alfvén Eigenmodes in JET, C-Mod and MAST plasmas

The Effect of Plasma Profile Variation on the Stability of the n = 1 Internal Kink Mode in Rotating Tokamak Plasmas

The effect of plasma profile variation on the stability of the n=1 internal kink mode in rotating tokamak plasmas

Importance of centrifugal effects for the internal kink mode stability in toroidally rotating tokamak plasmas

Edge kink/ballooning mode stability in tokamaks with separatrix

Kink instability of flux ropes anchored at one end and free at the other

Plasma turbulence in the scrape-off layer of tokamak devices

Feedback control of the proximity to marginal RWM stability using active MHD spectroscopy

Direct Measurements of the Damping of Alfvén Eigenmodes for an Assessment of their Stability Limits in Tokamak Plasmas

Kink instability of flux ropes anchored at one end and free at the other

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

Active excitation and damping rate measurement of intermediate-n Toroidal Alfvén Eigenmodes in JET, C-Mod and MAST plasmas

The Effect of Plasma Profile Variation on the Stability of the n = 1 Internal Kink Mode in Rotating Tokamak Plasmas

The effect of plasma profile variation on the stability of the n=1 internal kink mode in rotating tokamak plasmas

Importance of centrifugal effects for the internal kink mode stability in toroidally rotating tokamak plasmas

Edge kink/ballooning mode stability in tokamaks with separatrix