Person
Baptiste Jimmy Frei
This person is no longer with EPFL
Related publications (16)
Full-F turbulent simulation in a linear plasma device using a gyro-moment approach
Paolo Ricci, Baptiste Jimmy Frei
Simulations of plasma turbulence in a linear plasma device configuration are presented. These simulations are based on a simplified version of the gyrokinetic (GK) model proposed by Frei et al. [J. Plasma Phys. 86, 905860205 (2020)], where the full-F distr ...
Melville2024A Gyrokinetic Moment Model of the Plasma Boundary in Fusion Devices
The overall performance of fusion devices, such as tokamaks, is strongly correlated to thephenomena that occur in the boundary region, the outer plasma region that faces the wall of the device. The boundary plays a crucial role in regulating the heat and p ...
EPFL2023Gyrokinetic simulations of plasma turbulence in a Z-pinch using a moment-based approach and advanced collision operators
Paolo Ricci, Baptiste Jimmy Frei, Antoine Cyril David Hoffmann
The first nonlinear gyrokinetic simulations obtained using a moment approach based on the Hermite-Laguerre decomposition of the distribution function are presented, implementing advanced models for the collision operator. Turbulence in a two-dimensional Z- ...
CAMBRIDGE UNIV PRESS2023Gyrokinetic moment-based simulations of the Dimits shift
Paolo Ricci, Baptiste Jimmy Frei, Antoine Cyril David Hoffmann
We present a convergence study of the gyromoment (GM) approach, which is based on projecting the gyrokinetic distribution function onto a Hermite–Laguerre polynomial basis, focused on the cyclone base case (CBC) (Lin et al., Phys. Rev. Lett., vol. 83, no. ...
2023Development of advanced linearized gyrokinetic collision operators using a moment approach
Paolo Ricci, Justin Richard Ball, Louis Nicolas Stenger, Rogério Manuel Cabete De Jesus Jorge, Baptiste Jimmy Frei, Antoine Cyril David Hoffmann
The derivation and numerical implementation of a linearized version of the gyrokinetic (GK) Coulomb collision operator (Jorge et al., J. Plasma Phys., vol. 85, 2019, 905850604) and of the widely used linearized GK Sugama collision operator (Sugama et al., ...
CAMBRIDGE UNIV PRESS2021A gyrokinetic model for the plasma periphery of tokamak devices
Paolo Ricci, Paolo De Los Rios, Rogério Manuel Cabete De Jesus Jorge, Baptiste Jimmy Frei
A gyrokinetic model is presented that can properly describe large and small amplitude electromagnetic fluctuations occurring on scale lengths ranging from the electron Larmor radius to the equilibrium perpendicular pressure gradient scale length, and the a ...
2020A gyrokinetic model for the plasma periphery of fusion devices
Paolo Ricci, Rogério Manuel Cabete De Jesus Jorge, Baptiste Jimmy Frei
Understanding the turbulent dynamics of the plasma in the periphery of fusion devices - the region extending from the external part of the closed flux surface region to the scrape-off layer - is of crucial importance on the way to fusion energy. Indeed, th ...
2019An efficient treatment of the full Coulomb collision operator with applications
Paolo Ricci, Rogério Manuel Cabete De Jesus Jorge, Baptiste Jimmy Frei
A formulation of full Coulomb (or Landau) collision operator is provided that allows for an efficient numerical implementation, both in unmagnetized and magnetized plasmas. The method is based on projecting the Boltzmann equations and the collision operato ...
2019A Moment‐Based Kinetic Model for Efficient Numerical Implementation
Paolo Ricci, Rogério Manuel Cabete De Jesus Jorge, Baptiste Jimmy Frei
A drift-kinetic and a gyrokinetic model able to describe the plasma dynamics in the tokamak periphery are presented, which take into account electromagnetic fluctuations at all relevant scales, allowing for comparable amplitudes of background and fluctuati ...
2019Nonlinear Gyrokinetic Coulomb Collision Operator
Paolo Ricci, Rogério Manuel Cabete De Jesus Jorge, Baptiste Jimmy Frei
A gyrokinetic Coulomb collision operator is derived, which is particularly useful to describe the plasma dynamics at the periphery region of magnetic confinement fusion devices. The derived operator is able to describe collisions occurring in distribution ...
2019