Publications related to Recent ASDEX Upgrade research in support of ITER and DEMO

Imaging of molybdenum erosion and thermography at visible wavelengths in Alcator C-Mod ICRH and LHCD discharges

We describe results from imaging observations of atomic line and continuum emission in the 550.6 nm region on Alcator C-Mod. Both the 550.6 nm neutral molybdenum emission and the adjacent 549 nm continuum emission are imaged separately to isolate line emis ...

2013

Edge Localized Mode Control in TCV

Jonathan Rossel

The Tokamak concept, based on magnetic confinement of a hydrogen plasma, is one of today's most promising paths to energy production by nuclear fusion. The experimental scenarios leading to the largest fusion rate are based on a high confinement plasma reg ...

EPFL2012

Interpretation of the effects of electron cyclotron power absorption in pre-disruptive tokamak discharges in ASDEX Upgrade

Olivier Sauter, Daniele Brunetti, Hartmut Zohm

Tokamak disruptions are events of fatal collapse of the magnetohydrodynamic (MHD) confinement configuration, which cause a rapid loss of the plasma thermal energy and the impulsive release of magnetic energy and heat on the tokamak first wall components. T ...

Amer Inst Physics2012

Bifurcated Helical Core Equilibrium States in Tokamaks

Olivier Sauter, Basil Duval, Stefano Coda, Jonathan Graves, Wilfred Anthony Cooper, Holger Reimerdes, Benoît Labit, Antoine Pochelon, David Pfefferlé, Federico David Halpern, Daniele Brunetti, Jonathan Rossel, Mattia Albergante

Tokamaks with weak to moderate reversed central shear in which the minimum rotational transform

q_{min}

is in the neighbourhood of unity can trigger bifurcated MagnetoHydrodynamic (MHD) equilibrium states, one of which is similar to a saturated ideal ...

2012

Resonant features of energy and particle transport during application of resonant magnetic perturbation fields at TEXTOR and DIII-D

Holger Reimerdes

In this paper, results of a direct comparison of TEXTOR and DIII-D experiments with resonant magnetic perturbation (RMP) fields are presented. This comparison of resistive L-mode plasmas at TEXTOR with highly conductive H-mode plasmas at DIII-D is useful t ...

2012

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

Real-Time Control of Tokamak Plasmas: from Control of Physics to Physics-Based Control

Federico Alberto Alfredo Felici

Stable, high-performance operation of a tokamak requires several plasma control problems to be handled simultaneously. Moreover, the complex physics which governs the tokamak plasma evolution must be studied and understood to make correct choices in contro ...

EPFL2011

Extremely Shaped Plasmas to Improve the Tokamak Concept

Francesco Piras

Energy is essential for human existence and our future depends on plentiful and accessible sources of energy. The world population is fast growing and the average energy used per capita increases. One of the greatest challenges for human beings is that of ...

EPFL2011

Overview of the ITER EC H&CD system and its capabilities

Olivier Sauter, Timothy Goodman, Stefano Alberti, Minh Quang Tran, Jean-Philippe Hogge, René Chavan, Laurie Porte, Jean-Daniel Landis, Francisco Sanchez, Ioannis Pagonakis, Robert Bertizzolo, Hartmut Zohm, Emanuele Poli

The Electron Cyclotron (EC) system for the ITER tokamak is designed to inject >= 20 MW RF power into the plasma for Heating and Current Drive (H&CD) applications. The EC system consists of up to 26 gyrotrons (between 1 and 2 MW each), the associated power ...

Elsevier2011

Ideal MHD spectrum calculations for the ARIES-CS configuration

Wilfred Anthony Cooper

Ideal MHD stability calculations for the ARIES compact stellarator (ARIES-CS) reactor design (Najmabadi et al 2008 Fusion Sci. Technol. 54 655) show a spectrum of instabilities. The ARIES design considered is a three field-period stellarator with engineeri ...

2011

Recent ASDEX Upgrade research in support of ITER and DEMO

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Imaging of molybdenum erosion and thermography at visible wavelengths in Alcator C-Mod ICRH and LHCD discharges

Edge Localized Mode Control in TCV

Interpretation of the effects of electron cyclotron power absorption in pre-disruptive tokamak discharges in ASDEX Upgrade

Bifurcated Helical Core Equilibrium States in Tokamaks

Resonant features of energy and particle transport during application of resonant magnetic perturbation fields at TEXTOR and DIII-D

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

Real-Time Control of Tokamak Plasmas: from Control of Physics to Physics-Based Control

Extremely Shaped Plasmas to Improve the Tokamak Concept

Overview of the ITER EC H&CD system and its capabilities

Ideal MHD spectrum calculations for the ARIES-CS configuration

Edge Localized Mode Control in TCV

Imaging of molybdenum erosion and thermography at visible wavelengths in Alcator C-Mod ICRH and LHCD discharges

Interpretation of the effects of electron cyclotron power absorption in pre-disruptive tokamak discharges in ASDEX Upgrade

Bifurcated Helical Core Equilibrium States in Tokamaks

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

Real-Time Control of Tokamak Plasmas: from Control of Physics to Physics-Based Control

Resonant features of energy and particle transport during application of resonant magnetic perturbation fields at TEXTOR and DIII-D

Extremely Shaped Plasmas to Improve the Tokamak Concept

Overview of the ITER EC H&CD system and its capabilities

Ideal MHD spectrum calculations for the ARIES-CS configuration