Publications related to Investigating Scrape-Off Layer transport in alternative divertor geometries on the TCV tokamak

Scrape-off layer transport and filament characteristics in high-density tokamak regimes

Holger Reimerdes, Benoît Labit, Christian Gabriel Theiler, Alexander Karpushov, Nicola Vianello, Cedric Kar-Wai Tsui, Kevin Henricus Annemarie Verhaegh, Roberto Maurizio, Hugo De Oliveira

A detailed cross-device investigation on the role of filamentary dynamics in high-density regimes has been performed within the EUROfusion framework, comparing the ASDEX Upgrade (AUG) and TCV tokamaks. Both devices run density ramp experiments at different ...

2020

Nitrogen-seeded divertor detachment in TCV L-mode plasmas

Basil Duval, Holger Reimerdes, Benoît Labit, Christian Gabriel Theiler, Cedric Kar-Wai Tsui, Kevin Henricus Annemarie Verhaegh, Roberto Maurizio, Hugo De Oliveira

Most of the detachment experiments done to date on the tokamak a configuration variable (TCV), both in standard and alternative divertor geometries, focused on L-mode integrated core density ramps. In view of extending these studies to high-power, high-con ...

2020

Inter-Layer Joint of Nb3Sn React&Wind Cables for Fusion Magnets

Pierluigi Bruzzone, Kamil Sedlák, Boris Stepanov, Vincenzo D'Auria

The Swiss Plasma Center (SPC) has developed a layout of Toroidal Field (TF) coil for EUROfusion DEMO tokamak, based on the reference tokamak baseline of 2015. Each TF coil winding pack is wound with graded Nb3Sn conductors and consists of 12 single layers, ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020

Experimental verification of X-point potential well formation in unfavorable magnetic field direction

Basil Duval, Holger Reimerdes, Christian Gabriel Theiler, Joaquim Loizu Cisquella, Sophie Danielle Angelica Gorno, Claudia Colandrea, Marco Wischmeier, Cedric Kar-Wai Tsui, Mirko Wensing, Hugo De Oliveira

Recent TCV experiments confirm the predicted formation of an electric potential well, below the magnetic X-point, in configurations with unfavorable

B_t

field direction (ion

\nabla B

drift away from the divertor), that substantially reshapes the typica ...

2020

Nonlinear dynamics of energetic-particle driven geodesic acoustic modes in ASDEX Upgrade

Laurent Villard, Emmanuel Lanti, Alberto Bottino, Noé Thomas Elie Ohana, Emanuele Poli

Turbulence in tokamaks generates radially sheared zonal flows. Their oscillatory counterparts, geodesic acoustic modes (GAMs), appear due to the action of the magnetic field curvature. The GAMs can be driven unstable by an anisotropic energetic particle (E ...

AMER INST PHYSICS2020

Nonlinear gyrokinetic PIC simulations in stellarators with the code EUTERPE

Laurent Villard, Eduardo Sanchez, Alberto Bottino

In this work, the first nonlinear particle-in-cell simulations carried out in a stellarator with the global gyrokinetic code EUTERPE using adiabatic electrons and realistic plasma parameters are reported. Several studies are conducted with the aim of enabl ...

CAMBRIDGE UNIV PRESS2020

Manufacturing, installation, commissioning, and first results with the 3D low-temperature co-fired ceramic high-frequency magnetic sensors on the Tokamak a Configuration Variable

Duccio Testa

Innovative high-frequency magnetic sensors have been designed and manufactured in-house for installation on the Tokamak a Configuration Variable (TCV), which are now routinely operational during the TCV experimental campaigns. These sensors combine the Low ...

2020

Fast modeling of turbulent transport in fusion plasmas using neural networks

Federico Alberto Alfredo Felici, Yann Camenen, Simon Van Mulders

We present an ultrafast neural network model, QLKNN, which predicts core tokamak transport heat and particle fluxes. QLKNN is a surrogate model based on a database of 3 × 108 flux calculations of the quasilinear gyrokinetic transport model, QuaLiKiz. The d ...

2020

RF plasma simulations using the TOMATOR 1D code: a case study for TCV helium ECRH plasmas

Stefano Coda

The 1-dimensional reaction-diffusion-convection code TOMATOR-1D describes plasma production by RF waves inside a tokamak using the Braginskii continuity and heat balance equations. The model simulates self-consistent radial density and temperature profiles ...

2020

Separating the roles of magnetic topology and neutral trapping in modifying the detachment threshold for TCV

Christian Gabriel Theiler, Kevin Henricus Annemarie Verhaegh, Mirko Wensing

Total flux expansion, a divertor magnetic topology design choice embodied in the Super-X divertor, is predicted through simple analytic models and SOLPS calculations to reduce the plasma and impurity density detachment thresholds as the outer divertor sepa ...

IOP PUBLISHING LTD2020

Investigating Scrape-Off Layer transport in alternative divertor geometries on the TCV tokamak

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Scrape-off layer transport and filament characteristics in high-density tokamak regimes

Nitrogen-seeded divertor detachment in TCV L-mode plasmas

Inter-Layer Joint of Nb3Sn React&Wind Cables for Fusion Magnets

Experimental verification of X-point potential well formation in unfavorable magnetic field direction

Nonlinear dynamics of energetic-particle driven geodesic acoustic modes in ASDEX Upgrade

Nonlinear gyrokinetic PIC simulations in stellarators with the code EUTERPE

Manufacturing, installation, commissioning, and first results with the 3D low-temperature co-fired ceramic high-frequency magnetic sensors on the Tokamak a Configuration Variable

Fast modeling of turbulent transport in fusion plasmas using neural networks

RF plasma simulations using the TOMATOR 1D code: a case study for TCV helium ECRH plasmas

Separating the roles of magnetic topology and neutral trapping in modifying the detachment threshold for TCV

Scrape-off layer transport and filament characteristics in high-density tokamak regimes

Experimental verification of X-point potential well formation in unfavorable magnetic field direction

Nonlinear gyrokinetic PIC simulations in stellarators with the code EUTERPE

Nitrogen-seeded divertor detachment in TCV L-mode plasmas

Inter-Layer Joint of Nb3Sn React&Wind Cables for Fusion Magnets

Nonlinear dynamics of energetic-particle driven geodesic acoustic modes in ASDEX Upgrade

Manufacturing, installation, commissioning, and first results with the 3D low-temperature co-fired ceramic high-frequency magnetic sensors on the Tokamak a Configuration Variable

RF plasma simulations using the TOMATOR 1D code: a case study for TCV helium ECRH plasmas

Fast modeling of turbulent transport in fusion plasmas using neural networks

Separating the roles of magnetic topology and neutral trapping in modifying the detachment threshold for TCV