Publication
Multi-device studies of pedestal physics and confinement in the I-mode regime
Related publications (102)
Disruption avoidance and investigation of the H-Mode density limit in ASDEX Upgrade
Alessandro Pau, Federico Alberto Alfredo Felici, Bernhard Sieglin
In recent years a strong effort has been made to investigate disruption avoidance schemes in order to aid the development of integrated operational scenarios for ITER. Within the EUROfusion programme the disruptive H-mode density limit (HDL) has been studi ...
Bristol2024Impact of microwave beam scattering by density fluctuations on the electron-cyclotron power deposition profile in tokamaks
Stefano Coda, Joan Decker, Oleg Krutkin, Umesh Kumar, Jean Arthur Cazabonne
Electron-cyclotron waves are a tool commonly used in tokamaks, in particular to drive current. Their ability to drive current in a very localized manner renders them an optimal tool for MHD mode mitigation. However, such applications require high accuracy ...
Bristol2024An experimental and computational study of tokamak plasma turbulence
Turbulence driven by small-scale instabilities results in strong heat and particle transport, which significantly shortens the confinement time and prevents the formation of a self-sustained plasma reaction in magnetic confinement devices. Control and poss ...
EPFL2023Investigation of the interplay between Electron-Cyclotron waves, suprathermal electrons and turbulence in tokamak plasmas
Electron-Cyclotron waves are routinely used in tokamaks to heat the plasma and to drive current through the electron channel. Their unique ability to drive very localized current renders them the main foreseen tool for neoclassical tearing mode mitigation ...
EPFL2023Divertor detachment and reattachment with mixed impurity seeding on ASDEX Upgrade
Using newly developed spectroscopic models to measure the divertor concentration of Ne and Ar, it is shown that the experimental detachment threshold on ASDEX Upgrade with Ar-only and mixtures of Ar+N or Ne+N scales as expected in comparison with an analyt ...
IOP Publishing Ltd2023Performance assessment of a tightly baffled, long-legged divertor configuration in TCV with SOLPS-ITER
Basil Duval, Holger Reimerdes, Christian Gabriel Theiler, Guang-Yu Sun, Claudia Colandrea
Numerical simulations explore a possible tightly baffled, long-legged divertor (TBLLD) concept in a future upgrade of the tokamak à configuration variable (TCV). The SOLPS-ITER code package is used to compare the exhaust performance of several TBLLD config ...
2023Analysis and modelling of momentum transport based on NBI modulation experiments at ASDEX Upgrade
Basil Duval, Emiliano Fable, Giovanni Tardini
The prediction of plasma rotation is of high interest for fusion research due to the effects of the rotation upon magnetohydrodynamic (MHD) instabilities, impurities, and turbulent transport in general. In this work, an analysis method was studied and vali ...
IOP Publishing Ltd2022A novel measurement of marginal Alfven eigenmode stability during high power auxiliary heating in JET
Ambrogio Fasoli, Mario Ludovico Podesta
The interaction of Alfven eigenmodes (AEs) and energetic particles is one of many important factors determining the success of future tokamaks. In JET, eight in-vessel antennas were installed to actively probe stable AEs with frequencies ranging 25-250 kHz ...
IOP Publishing Ltd2022Enhanced confinement in diverted negative-triangularity L-mode plasmas in TCV
Olivier Sauter, Stefano Coda, Benoît Labit, Alessandro Pau, Laurie Porte, Antoine Pierre Emmanuel Alexis Merle, Umar Sheikh, Cedric Kar-Wai Tsui, Alessandro Marinoni, Matteo Vallar, Filippo Bagnato, Leonardo Pigatto
The favorable confinement properties of negative-triangularity (NT) tokamak configurations were discovered in the TCV tokamak in the late 1990s and were documented over the two following decades, through investigations of predominantly electron-heated plas ...
IOP Publishing Ltd2022First-Principles Density Limit Scaling in Tokamaks Based on Edge Turbulent Transport and Implications for ITER
Olivier Sauter, Paolo Ricci, Alessandro Pau, Maurizio Giacomin
A first-principles scaling law, based on turbulent transport considerations, and a multimachine database of density limit discharges from the ASDEX Upgrade, JET, and TCV tokamaks, show that the increase of the boundary turbulent transport with the plasma c ...
AMER PHYSICAL SOC2022