Publications associées à Turbulent transport regimes in the tokamak boundary

Thermal, electromagnetic and structural analysis of gas baffles for the TCV divertor upgrade

As part of an ongoing divertor upgrade of the TCV tokamak it is planned to add gas baffles to form a divertor chamber of variable closure. The baffles promise to increase the compression of neutral particles in the divertor and, thereby, extend the researc ...

2019

Thermal, electromagnetic and structural analysis of gas baffles for the TCV divertor upgrade

Basil Duval, Jean-Marc Moret, Holger Reimerdes, Christian Gabriel Theiler, Matthieu Toussaint, Dario Vaccaro

As part of an ongoing divertor upgrade of the TCV tokamak it is planned to add gas baffles to form a divertor chamber of variable closure. The baffles promise to increase the compression of neutral particles in the divertor and, thereby, extend the researc ...

2019

Beryllium melting and erosion on the upper dump plates in JET during three ITER-like wall campaigns

Olivier Sauter, Ambrogio Fasoli, Basil Duval, Stefano Coda, Jonathan Graves, Yves Martin, Duccio Testa, Patrick Blanchard, Alessandro Pau, Cristian Sommariva, Henri Weisen, Richard Pitts, Yann Camenen, Jan Horacek, Javier García Hernández, Marco Wischmeier, Nicola Vianello, Mikhail Maslov, Federico Nespoli, Yao Zhou, David Pfefferlé, Davide Galassi, Antonio José Pereira de Figueiredo, Jonathan Marc Philippe Faustin, Liang Yao, Dalziel Joseph Wilson, Hamish William Patten, Samuel Lanthaler, Bernhard Sieglin, Otto Asunta

Data on erosion and melting of beryllium upper limiter tiles, so-called dump plates (DP), are presented for all three campaigns in the JET tokamak with the ITER-like wall. High-resolution images of the upper wall of JET show clear signs of flash melting on ...

2019

Turbulence simulations in diverted geometry

Paolo Ricci, Paola Paruta, Maurizio Giacomin, Carrie Fiona Beadle, André Calado Coroado

Abstract The study of scrape-off layer (SOL) is a fundamental step in magnetic confinement fusion research. For example, SOL sets the boundary conditions for the tokamak core and it provides the energy flux toward the tokamak wall. With the goal of improvi ...

2018

Pedestal Structure and Energy Confinement Studies on TCV

Olivier Sauter, Basil Duval, Patrick Blanchard, Benoît Labit, Christian Gabriel Theiler, Antoine Pierre Emmanuel Alexis Merle, Umar Sheikh, Cedric Kar-Wai Tsui

High external gas injection rates are foreseen for future devices to reduce divertor heat loads and this can influence pedestal stability. Fusion yield has been estimated to vary as strongly as

{T}_{e,{\rm{ped}}}^{2}

so an understanding of the underlying ...

2018

On the universality of power laws for tokamak plasma predictions

Olivier Sauter, Ambrogio Fasoli, Basil Duval, Stefano Coda, Jonathan Graves, Yves Martin, Duccio Testa, Patrick Blanchard, Alessandro Pau, Cristian Sommariva, Henri Weisen, Richard Pitts, Yann Camenen, Jan Horacek, Javier García Hernández, Marco Wischmeier, Nicola Vianello, Mikhail Maslov, Federico Nespoli, Yao Zhou, David Pfefferlé, Davide Galassi, Antonio José Pereira de Figueiredo, Jonathan Marc Philippe Faustin, Liang Yao, Dalziel Joseph Wilson, Hamish William Patten, Samuel Lanthaler, Bernhard Sieglin, Otto Asunta

Significant deviations from well established power laws for the thermal energy confinement time, obtained from extensive databases analysis as the IPB98(y, 2), have been recently reported in dedicated power scans. In order to illuminate the adequacy, valid ...

2018

High Z neoclassical transport: Application and limitation of analytical formulae for modelling JET experimental parameters

Olivier Sauter, Ambrogio Fasoli, Basil Duval, Stefano Coda, Jonathan Graves, Yves Martin, Duccio Testa, Patrick Blanchard, Alessandro Pau, Cristian Sommariva, Henri Weisen, Richard Pitts, Yann Camenen, Jan Horacek, Javier García Hernández, Marco Wischmeier, Nicola Vianello, Mikhail Maslov, Federico Nespoli, Yao Zhou, David Pfefferlé, Davide Galassi, Antonio José Pereira de Figueiredo, Jonathan Marc Philippe Faustin, Liang Yao, Dalziel Joseph Wilson, Hamish William Patten, Samuel Lanthaler, Bernhard Sieglin, Otto Asunta

Heavy impurities, such as tungsten (W), can exhibit strongly poloidally asymmetric density profiles in rotating or radio frequency heated plasmas. In the metallic environment of JET, the poloidal asymmetry of tungsten enhances its neoclassical transport up ...

2018

First principle integrated modeling of multi-channel transport including Tungsten in JET

Olivier Sauter, Ambrogio Fasoli, Basil Duval, Stefano Coda, Jonathan Graves, Yves Martin, Duccio Testa, Patrick Blanchard, Alessandro Pau, Cristian Sommariva, Henri Weisen, Richard Pitts, Yann Camenen, Jan Horacek, Javier García Hernández, Marco Wischmeier, Nicola Vianello, Mikhail Maslov, Federico Nespoli, Yao Zhou, David Pfefferlé, Davide Galassi, Antonio José Pereira de Figueiredo, Jonathan Marc Philippe Faustin, Liang Yao, Dalziel Joseph Wilson, Hamish William Patten, Samuel Lanthaler, Bernhard Sieglin, Otto Asunta

For the first time, over five confinement times, the self-consistent flux driven time evolution of heat, momentum transport and particle fluxes of electrons and multiple ions including Tungsten (W) is modeled within the integrated modeling platform JFTTO ( ...

2018

Inter-Layer Joint for the TF Coils of DEMO-Design and Test Results

Pierluigi Bruzzone, Kamil Sedlák, Boris Stepanov

In summer 2015, a new reference baseline is issued for the DEMO EUROfusion tokamak. Thereafter, the toroidal field (TF) coils have been updated with the new layout of the react-and-wind conductor proposed by the Swiss Plasma Center (SPC). Each TF coil cons ...

Ieee-Inst Electrical Electronics Engineers Inc2018

Load transfer mechanisms in CFRP ground anchors with multi-strap ends

Thomas Keller, Anastasios Vassilopoulos, Haifeng Fan

An investigation of the load-transfer mechanism in carbon fiber-reinforced polymer (CFRP) ground anchors with multi-strap ends was conducted based on experimental and numerical studies of one- and two-strap anchors. Differences in the strap geometry, i.e. ...

Elsevier2018

Turbulent transport regimes in the tokamak boundary

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Thermal, electromagnetic and structural analysis of gas baffles for the TCV divertor upgrade

Thermal, electromagnetic and structural analysis of gas baffles for the TCV divertor upgrade

Beryllium melting and erosion on the upper dump plates in JET during three ITER-like wall campaigns

Turbulence simulations in diverted geometry

Pedestal Structure and Energy Confinement Studies on TCV

On the universality of power laws for tokamak plasma predictions

High Z neoclassical transport: Application and limitation of analytical formulae for modelling JET experimental parameters

First principle integrated modeling of multi-channel transport including Tungsten in JET

Inter-Layer Joint for the TF Coils of DEMO-Design and Test Results

Load transfer mechanisms in CFRP ground anchors with multi-strap ends

Turbulence simulations in diverted geometry

First principle integrated modeling of multi-channel transport including Tungsten in JET

High Z neoclassical transport: Application and limitation of analytical formulae for modelling JET experimental parameters

Inter-Layer Joint for the TF Coils of DEMO-Design and Test Results

Pedestal Structure and Energy Confinement Studies on TCV

Thermal, electromagnetic and structural analysis of gas baffles for the TCV divertor upgrade

Thermal, electromagnetic and structural analysis of gas baffles for the TCV divertor upgrade

Beryllium melting and erosion on the upper dump plates in JET during three ITER-like wall campaigns

Load transfer mechanisms in CFRP ground anchors with multi-strap ends

On the universality of power laws for tokamak plasma predictions