Publication
Effects of 3D Ideal MHD Equilibrium Geometry on Neoclassical Properties in Tokamaks: Exploring Bootstrap Current and Impurity Accumulation
Publications associées (35)
Plasma turbulence simulations in a diverted tokamak with applied resonant magnetic perturbations
Paolo Ricci, Joaquim Loizu Cisquella, Théophile Boinnard, António João Caeiro Heitor Coelho
The first results of three-dimensional, flux-driven, electrostatic, global, two-fluid turbulence simulations of a diverted tokamak configuration with applied resonant magnetic perturbations generated by a set of saddle coils are presented. The simulations ...
2023First global simulations of plasma turbulence in a stellarator with an island divertor
Paolo Ricci, Joaquim Loizu Cisquella, António João Caeiro Heitor Coelho
We present the results of 3D, flux-driven, global, two-fluid electrostatic turbulence simulations in a 5-field period stellarator with an island divertor. The numerical simulations are carried out with the GBS code, which solves the two-fluid drift-reduced ...
2021MHD Stability and Energy Principle for Two-Dimensional Equilibria without Assumption of Nested Magnetic Surfaces
Laurent Villard, Andrei Martynov
Abandoning the assumption of nested magnetic surfaces in tokamak plasma expands the field of research and opens up new approaches for both theoretical and experimental plasma physics. The computer code KINX for calculations of the ideal MHD stability was d ...
PLEIADES PUBLISHING INC2019Heavy impurity transport in tokamaks with plasma flows and saturated 3D perturbations
Jonathan Graves, Wilfred Anthony Cooper, Cristian Sommariva, Samuel Lanthaler, Madhusudan Raghunathan, Eduardo José Lascas Neto
Observations in JET hybrid scenarios show that early termination of the plasma can be caused by tungsten accumulation events, sometimes preceded by large living MHD perturbations [1]. Only recent investigations have been made into understanding the effects ...
European Physical Society2019Poloidal CX visible light plasma rotation diagnostics in TCV
Controlled thermonuclear fusion is the main goal of plasma physics. At the Swiss Plasma Center, the Tokamak `a Configuration Variable (TCV) constitutes the main experiment on fusion research, where high temperature plasmas are confined by means of magneti ...
EPFL2017Overview of the RFX-mod fusion science activity
Yi Zhang, Wilfred Anthony Cooper, Federico Alberto Alfredo Felici, Nicola Vianello, Matteo Vallar, Leonardo Pigatto, Elena Gaio, Alberto Ferro
This paper reports the main recent results of the RFX-mod fusion science activity. The RFX-mod device is characterized by a unique flexibility in terms of accessible magnetic configurations. Axisymmetric and helically shaped reversed-field pinch equilibria ...
Iop Publishing Ltd2017Losses of runaway electrons in MHD-active plasmas of the COMPASS tokamak
Cristian Sommariva, Joan Decker, Gergely Papp
The significant role of magnetic perturbations in mitigation and losses of runaway electrons (REs) was documented in dedicated experimental studies of RE at the COMPASS tokamak. REs in COMPASS are produced both in low density quiescent discharges and in di ...
Iop Publishing Ltd2017Neoclassical tearing mode seeding by coupling with infernal modes in low-shear tokamaks
Jonathan Graves, Wilfred Anthony Cooper, Federico David Halpern, Daniele Brunetti, Andreas Kleiner
A numerical and an analytical study of the triggering of resistive MHD modes in tokamak plasmas with low magnetic shear core is presented. Flat q profiles give rise to fast growing pressure driven MHD modes, such as infernal modes. It has been shown that i ...
Bristol: IOP Publishing, 20162016Simulation of bootstrap current in 2D and 3D ideal magnetic fields in tokamaks
Olivier Sauter, Jonathan Graves, Wilfred Anthony Cooper, Madhusudan Raghunathan, Michael Pedro
We aim to simulate the bootstrap current for a MAST-like spherical tokamak using two approaches for magnetic equilibria including externally caused 3D effects such as resonant magnetic perturbations (RMPs), the effect of toroidal ripple, and intrinsic 3D e ...
Iop Publishing Ltd2016Simulation of bootstrap current in 2D and 3D ideal magnetic fields in tokamaks
Olivier Sauter, Jonathan Graves, Wilfred Anthony Cooper, Madhusudan Raghunathan, Michael Pedro
We aim to simulate the bootstrap current for a MAST-like spherical tokamak using two approaches for magnetic equilibria including externally caused 3D effects such as resonant magnetic perturbations (RMPs), the effect of toroidal ripple, and intrinsic 3D e ...
2016