Publications related to Bifurcated Helical Core Equilibrium States in Tokamaks

Recent ASDEX Upgrade research in support of ITER and DEMO

Olivier Sauter, Basil Duval, Stefano Coda, Timothy Goodman, Alessandro Pau, Federico Alberto Alfredo Felici, Laurie Porte, Haomin Sun, Yann Camenen, Marco Wischmeier, Nicola Vianello, Alberto Bottino, Emiliano Fable, Andrea Scarabosio, Doohyun Kim, Dávid Wágner, Thomas Binderup Jensen, Heinz Mueller, Donghyun Kim, Xiao Wang, Bernhard Sieglin, Otto Asunta, Hartmut Zohm, Emanuele Poli, Gergely Papp, Giovanni Tardini

Recent experiments on the ASDEX Upgrade tokamak aim at improving the physics base for ITER andDEMOto aid the machine design and prepare efficient operation. Type I edge localized mode (ELM) mitigation using resonant magnetic perturbations (RMPs) has been s ...

2015

Collisionless microtearing modes in hot tokamaks: Effect of trapped electrons

Laurent Villard, Stephan Brunner

Collisionless microtearing modes have recently been found linearly unstable in sharp temperature gradient regions of large aspect ratio tokamaks. The magnetic drift resonance of passing electrons has been found to be sufficient to destabilise these modes a ...

Amer Inst Physics2015

20 years of research on the Alcator C-Mod tokamak

Basil Duval, Christian Gabriel Theiler, Yu Lin

The object of this review is to summarize the achievements of research on the Alcator C-Mod tokamak [Hutchinson et al., Phys. Plasmas 1, 1511 (1994) and Marmar, Fusion Sci. Technol. 51, 261 (2007)] and to place that research in the context of the quest for ...

Amer Inst Physics2014

Development of the gas puff charge exchange recombination spectroscopy (GP-CXRS) technique for ion measurements in the plasma edge

Christian Gabriel Theiler

A novel charge-exchange recombination spectroscopy (CXRS) diagnostic method is presented, which uses a simple thermal gas puff for its donor neutral source, instead of the typical high-energy neutral beam. This diagnostic, named gas puff CXRS (GP-CXRS), is ...

American Institute of Physics2013

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

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

Using APCS for Plasma Vertical Control at TCV

Basil Duval, Stefano Coda, Jean-Marc Moret, Federico Alberto Alfredo Felici, James Paley, Francesco Piras

Early tokamaks with circular cross-section plasmas were vertically stable in nature and no problems were reported on the control of the vertical position. However, the concept of vertically elongated plasma cross-section, with benefits to the energy confin ...

2011

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

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 saddle coil system for TCV and RMP spectrum optimisation

Yves Martin, Jean-Marc Moret, Jonathan Rossel

A multi-purpose saddle coil system is proposed as part of a future upgrade of TCV (Tokamak à Configuration Variable). This system consists of 3 rows of 8 coils, each coil having independent power supplies, and provides simultaneously error field correction ...

European Physical Society2009

Bifurcated Helical Core Equilibrium States in Tokamaks

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Recent ASDEX Upgrade research in support of ITER and DEMO

Collisionless microtearing modes in hot tokamaks: Effect of trapped electrons

20 years of research on the Alcator C-Mod tokamak

Development of the gas puff charge exchange recombination spectroscopy (GP-CXRS) technique for ion measurements in the plasma edge

Bifurcated Helical Core Equilibrium States in Tokamaks

Edge Localized Mode Control in TCV

Using APCS for Plasma Vertical Control at TCV

Extremely Shaped Plasmas to Improve the Tokamak Concept

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

A saddle coil system for TCV and RMP spectrum optimisation

20 years of research on the Alcator C-Mod tokamak

Development of the gas puff charge exchange recombination spectroscopy (GP-CXRS) technique for ion measurements in the plasma edge

Edge Localized Mode Control in TCV

Extremely Shaped Plasmas to Improve the Tokamak Concept

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

Collisionless microtearing modes in hot tokamaks: Effect of trapped electrons

Recent ASDEX Upgrade research in support of ITER and DEMO

Bifurcated Helical Core Equilibrium States in Tokamaks

Using APCS for Plasma Vertical Control at TCV

A saddle coil system for TCV and RMP spectrum optimisation