An overview of the numerical methods for tokamak plasma equilibrium computation implemented in the NICE code

B Faugeras - Fusion engineering and design, 2020 - Elsevier
The code NICE (Newton direct and Inverse Computation for Equilibrium) enables to solve
numerically several problems of plasma free-boundary equilibrium computations in a …

Overview of the emissivity measurements performed in WEST: in situ and post-mortem observations

J Gaspar, Y Corre, F Rigollet, MH Aumeunier… - Nuclear …, 2022 - iopscience.iop.org
This paper summarizes the emissivity measurements performed on the plasma-facing units
(PFU) of the WEST lower divertor during the first phase of WEST running with a mix of …

A strict control Lyapunov function for a diffusion equation with time-varying distributed coefficients

FB Argomedo, C Prieur, E Witrant… - IEEE Transactions on …, 2012 - ieeexplore.ieee.org
In this paper, a strict Lyapunov function is developed in order to show the exponential
stability and input-to-state stability (ISS) properties of a diffusion equation for …

Grad-Shafranov equation in fractal dimensions

RA El-Nabulsi, W Anukool - Fusion Science and Technology, 2022 - Taylor & Francis
The main aim of this paper is to discuss the influence of fractal dimensions on the behavior
of the solutions of the Grad-Shafranov equation. Our study is based on the product-like …

Quasi-static free-boundary equilibrium of toroidal plasma with CEDRES++: Computational methods and applications

H Heumann, J Blum, C Boulbe, B Faugeras… - Journal of Plasma …, 2015 - cambridge.org
We present a comprehensive survey of various computational methods in CEDRES++
(Couplage Equilibre Diffusion Résistive pour l'Etude des Scénarios) for finding equilibria of …

[HTML][HTML] Control-oriented modeling of the plasma particle density in tokamaks and application to real-time density profile reconstruction

TC Blanken, F Felici, CJ Rapson, MR De Baar… - Fusion Engineering and …, 2018 - Elsevier
A model-based approach to real-time reconstruction of the particle density profile in tokamak
plasmas is presented, based on a dynamic state estimator. Traditionally, the density profile …

First demonstration of real-time kinetic equilibrium reconstruction on TCV by coupling LIUQE and RAPTOR

F Carpanese, F Felici, C Galperti, A Merle… - Nuclear …, 2020 - iopscience.iop.org
Kinetic equilibrium reconstruction (KER) in tokamaks is the solution of the free-boundary
MHD equilibrium that best fits the external magnetic measurements and the internal plasma …

GPU-optimized fast plasma equilibrium reconstruction in fine grids for real-time control and data analysis

Y Huang, ZP Luo, BJ **ao, LL Lao, A Mele… - Nuclear …, 2020 - iopscience.iop.org
Abstract P-EFIT, a GPU parallel equilibrium reconstruction code, is based on the EFIT
framework, but built with the CUDA™(Compute Unified Device Architecture) to take …

Lyapunov-based distributed control of the safety-factor profile in a tokamak plasma

FB Argomedo, E Witrant, C Prieur, S Brémond… - Nuclear …, 2013 - iopscience.iop.org
A real-time model-based controller is developed for the tracking of the distributed safety-
factor profile in a tokamak plasma. Using relevant physical models and simplifying …

[HTML][HTML] Implementing an X-ray tomography method for fusion devices

A Jardin, J Bielecki, D Mazon, Y Peysson, K Król… - The European Physical …, 2021 - Springer
In fusion devices, the X-ray plasma emissivity contains essential information on the
magnetohydrodynamic activity, the magnetic equilibrium and on the transport of impurities …