A Drift-Kinetic Analytical Model for SOL Plasma Dynamics at Arbitrary Collisionality

Abstract

A drift-kinetic model to describe the plasma dynamics in the scrape-off layer region of tokamak devices at arbitrary collisionality is derived. Our formulation is based on a gyroaveraged Lagrangian description of the charged particle motion, and the corresponding drift-kinetic Boltzmann equation that includes a full Coulomb collision operator. Using a Hermite-Laguerre velocity space decomposition of the gyroaveraged distribution function, a set of equations to evolve the coefficients of the expansion is presented. By evaluating explicitly the moments of the Coulomb collision operator, distribution functions arbitrarily far from equilibrium can be studied at arbitrary collisionalities. A fluid closure in the high-collisionality limit is presented, and the corresponding fluid equations are compared with previously-derived fluid models.

References in corpus (13)

• An experimental investigation on the high density transition of the Scrape-off Layer transport in ASDEX Upgrade
• Phase mixing vs. nonlinear advection in drift-kinetic plasma turbulence
• A fast low-to-high mode bifurcation dynamics in a tokamak edge plasma gyrokinetic simulation
• 3D Simulations of Plasma Filaments in the Scrape Off Layer: A Comparison with Models of Reduced Dimensionality
• Fully kinetic versus reduced-kinetic modelling of collisionless plasma turbulence
• Gyrokinetic continuum simulation of turbulence in a straight open-field-line plasma
• Laguerre-Hermite Pseudo-Spectral Velocity Formulation of Gyrokinetics
• Collisional transport across the magnetic field in drift-fluid models
• Viriato: a Fourier-Hermite spectral code for strongly magnetised fluid-kinetic plasma dynamics
• Kinetic microtearing modes and reconnecting modes in strongly magnetised slab plasmas
• The influence of temperature dynamics and dynamic finite ion Larmor radius effects on seeded high amplitude plasma blobs
• Plasma Turbulence in the Scrape-off Layer of the ISTTOK Tokamak
• Fluid moments of the Landau collision operator

Cited by in corpus (23)

• The GBS code for the self-consistent simulation of plasma turbulence and kinetic neutral dynamics in the tokamak boundary
• Conservative Discontinuous Galerkin Schemes for Nonlinear Fokker-Planck Collision Operators
• A gyrokinetic model for the plasma periphery of tokamak devices
• Construction of Quasisymmetric Stellarators Using a Direct Coordinate Approach
• Padé-based arbitrary wavelength polarization closures for full-F gyro-kinetic and -fluid models
• Nonlinear Gyrokinetic Coulomb Collision Operator
• The Use of Near-Axis Magnetic Fields for Stellarator Turbulence Simulations
• Theory of the Drift-Wave Instability at Arbitrary Collisionality
• Local Gyrokinetic Collisional Theory of the Ion-Temperature Gradient Mode
• Linear Theory of Electron-Plasma Waves at Arbitrary Collisionality
• Gyrokinetic simulations of plasma turbulence in a Z-pinch using a moment based approach and advanced collision operators
• Development of Advanced Linearized Gyrokinetic Collision Operators Using a Moment Approach
• Local gyrokinetic simulations of tokamaks with non-uniform magnetic shear
• Generalized Collisional Fluid Theory for Multi-Component, Multi-Temperature Plasma Using The Linearized Boltzmann Collision Operator for Scrape-Off Layer/Edge Applications
• Full-F Turbulent Simulation in a Linear Device using a Gyro-Moment Approach
• Numerical Implementation of the Improved Sugama Collision Operator Using a Moment Approach
• The effect of background flow shear on gyrokinetic turbulence in the cold ion limit
• Multiscale Modelling for Tokamak Pedestals
• Machine-learning Closure for Vlasov-Poisson Dynamics in Fourier-Hermite Space
• Moment-Fourier approach to ion parallel fluid closures and transport for a toroidally confined plasma
• Four-dimensional drift-kinetic model for scrape-off layer plasmas
• Conservative formulation of the drift-reduced fluid plasma model
• ALLIANCE: Spectral solver for kinetic plasma turbulence