Full-$f$ gyrokinetic simulation of turbulence in a helical open-field-line plasma

Abstract

Curvature-driven turbulence in a helical open-field-line plasma is investigated using electrostatic five-dimensional gyrokinetic continuum simulations in an all-bad-curvature helical-slab geometry. Parameters for a National Spherical Torus Experiment scrape-off-layer plasma are used in the model. The formation and convective radial transport of plasma blobs is observed, and it is shown that the radial particle-transport levels are several times higher than diffusive Bohm-transport estimates. By reducing the strength of the poloidal magnetic field, the profile of the heat flux to the divertor plate is observed to broaden.

References in corpus (9)

• Gyrokinetic projection of the divertor heat-flux width from present tokamaks to ITER
• Intermittent turbulence and turbulent structures in a linear magnetized plasma
• Hermes: Global plasma edge fluid turbulence simulations
• Gyrokinetic continuum simulation of turbulence in a straight open-field-line plasma
• Pedestal and edge turbulence characteristics from an XGC1 gyrokinetic simulation
• A Gyrokinetic 1D Scrape-Off Layer Model of an ELM Heat Pulse
• Numerical investigation of isolated filament motion in a realistic tokamak geometry
• Blob dynamics in TORPEX poloidal null configurations
• Gyrokinetic Continuum Simulation of Turbulence in Open-Field-Line Plasmas

Cited by in corpus (14)

• Electromagnetic full-$f$ gyrokinetics in the tokamak edge with discontinuous Galerkin methods
• Dissipation measures in weakly-collisional plasmas
• Conservative Discontinuous Galerkin Schemes for Nonlinear Fokker-Planck Collision Operators
• Conservative discontinuous Galerkin scheme of a gyro-averaged Dougherty collision operator
• Improved multispecies Dougherty collisions
• Kinetic modeling of neutral transport for a continuum gyrokinetic code
• Gyrokinetic continuum simulations of plasma turbulence in the Texas Helimak
• Fluid & Gyrokinetic turbulence in open field-line, helical plasmas
• Turbulent field fluctuations in gyrokinetic and fluid plasmas
• A Two-dimensional Numerical Study of Ion-Acoustic Turbulence
• Turbulent broadening of electron heat-flux width in electromagnetic gyrokinetic simulations of a helical scrape-off layer model
• Magnetic Fluctuations in Gyrokinetic Simulations of Tokamak Scrape-Off Layer Turbulence
• Investigating shear flow through continuum gyrokinetic simulations of limiter biasing in the Texas Helimak
• Reduction of transport due to magnetic shear in gyrokinetic simulations of the scrape-off layer