Numerical Diagnostics of the Electrostatic Potential Perturbed by Magnetic Islands
スポンサーリンク
概要
- 論文の詳細を見る
Nonlinear dynamics of a magnetic island is simulated using a set of reduced two-fluid equations, and the excitation of the electric field in the vicinity of the magnetic island is observed. An impact of the error field (external symmetry-breaking magnetic perturbation) on the electric field is examined, and its global structure changes with a small error field. A numerical measurement simulating the heavy ion beam probe is carried out on the field given by the nonlinear simulation. An effect of the finite width of the injected beam is taken into account, and the spatial resolution is evaluated. It is found that the measuring error due to the finite beam width is significant when the radial gradient scale length of the electrostatic potential is comparable to the beam width.
著者
-
OHYABU Nobuyoshi
National Insitute for Fusion Science
-
KASUYA Naohiro
National Institute for Fusion Science
-
Yagi Masatoshi
Research Instittue For Applied Mechanics Kyushu University
-
Itoh Sanae-i.
Research Instittue For Applied Mechanics Kyushu University
-
Itoh Kimitaka
National Inst. For Fusion Sci. Gifu
-
NISHIMURA Seiya
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan
-
YAGI Masatoshi
Research Institute for Applied Machanics, Kyushu University, Fukuoka 816-8580, Japan
関連論文
- Theoretical Modeling of Transport Barriers in Helical Plasmas
- Abrupt Flushing of High-Density Core in Internal Diffusion Barrier Plasmas and its Suppression by Plasma Shape Control in LHD
- Stability and Confinement Studies of High-Performance NBI Plasmas in the Large Helical Device Toward a Steady-State Helical Fusion Reactor
- Achievement of 10 keV Central Electron Temperatures by ECH in LHD
- Coexistence of Collisional Drift and Flute Wave Instabilities in Bounded Linear ECR Plasma(Gases, plasmas, electric discharges, and beams)
- Retention and Desorption of Hydrogen and Helium in Inner Wall Material Used for The Large Helical Device (LHD) : Simulation experiments using a glow discharge apparatus
- Prevention of Reversed Flow in Gas Divertor with High Vacuum Chamber
- Local Impurity Deposition in a Magnetic Island by Means of a Tracer-Encapsulated Solid Pellet in the LHD
- Analysis of Radial Electric Field Bifurcation in LHD Based on Neoclassical Transport Theory
- シート・プラズマ中のヘリウムイオン温度
- LHDダイバｰタ模擬実験のための高熱流シｰトプラズマ開発研究
- Possibility of Electric Field Bifurcation and Internal Transport barrier Formation in LHD Plasma : Fluids, Plasmas, and Electric Discharges
- Extension of Improved Particle and Energy Confinement Regime in the Core of LHD Plasma
- Coexistence of Zonal Flows and Drift-Waves in a Cylindrical Magnetized Plasma(Gases, plasmas, electric discharges, and beams)
- Electron Confining Potential When the Electrons Have Finite Axial Loss Time
- Neutron and Fast Atom Spectrometry Using Natural Diamond Detectors
- Impurity Retention Effect in the Edge Ergodic Layer of the Large Helical Device
- Potential Formation in a High-Temperature Divertor Plasma
- A New Boundary Control Scheme for Simultaneous Achievement of H-Mode and Radiative Cooling (SHC Boundary)
- Plasma Plugging in Gas Divertor
- Numerical Study of Neutral Gas Transport in Linear Plasma Device
- Transition of Radial Electric Field in Helical Systems : Fluids, Plasmas, and Electric Discharges
- Non-Local Model Analysis of Heat Pulse Propagation and Simulation of Experiments in W7-AS
- Convective cell dynamics in universal drift wave turbulence
- Control of chaos by linear and nonlinear feedback methods
- Turbulent Transport of Poloidal Momentum in Toroidal Plasmas(Gases, plasmas, electric discharges, and beams)
- Nonlinear Simulation of Electron and Ion Turbulence
- Nonlinear Energy Transfer of Drift-Wave Fluctuation in a Cylindrical Laboratory Plasma
- Numerical Diagnostics of the Electrostatic Potential Perturbed by Magnetic Islands
- Comparison Study of Fast Responses in Confined Plasmas with Diffusivity Models : Fluids, Plasmas, and Electric Discharges
- Probabilistic Nature in L/H Transition
- Monte-Carlo Simulation of Neoclassical Transport in Magnetic Islands and Ergodic Regions
- A Change of H-Mode Dynamics due to Edge Electric Field Shear
- Turbulent Stabilization of Neoclassical Tearing Modes(Gases, plasmas, electric discharges, and beams)
- On the Basis of Statistical Theory of Strong Turbulence in Inhomogeneous Plasmas (Gases, Plasmas and Electric Discharges)
- Long Range Temperature Fluctuation in LHD
- Stability Analysis of Neoclassical Tearing Mode
- Bifurcation Paradigm - A Short Summary of Discussion at the Workshop on "Self-Organization and Transport in Electromagnetic Turbulence"
- Linear Analysis of Neoclassical Tearing Mode based of the Four-Field Reduced Neoclassical MHD Equation
- Linear Analysis of Neoclassical Tearing Mode based on the Four-Field Reduced Neoclassical MHD Equation
- Tearing Mode Instability due to Anomalous Resistivity : Fluids, Plasmas, and Electric Discharges
- Experimental Study of Drift Wave Turbulence in Linear Plasmas
- Method for Estimating the Wavenumber of Standing Waves Using Three Langmuir Probes
- On Detection of a Global Mode Structure in Experiments by Use of Turbulence Diagnostic Simulator
- Bispectral Analysis of Density and Potential Fluctuations in a High Neutral Density Cylindrical Plasma
- ECRH Superposition on Linear Cylindrical Helicon Plasma in the LMD-U
- Probability Density Function of Density Fluctuations in Cylindrical Helicon Plasmas
- Nonlinear Mode Couplings in a Cylindrical Magnetized Plasma
- Forced Magnetic Reconnection in Helical Plasmas
- Observation of Edge Reynolds Stress Increase Preceding an L-H Transition in Compact Helical System
- Geodesic Acoustic Mode Spectroscopy II
- Poloidal Flow Generated by Drift-Tearing Mode(Gases, plasmas, electric discharges, and beams)
- Spatiotemporal Behavior of Drift Waves in LMD-U
- Two-Dimensional Model Including the Mechanism of a Poloidal Shock Structure and Geodesic Acoustic Mode in Toroidal Plasmas
- Observation of Zonal Flow Type Oscillation in Linear Cylindrical ECR Plasmas
- Propagation Velocity Analysis of a Single Blob in the SOL
- Thermal Transport Effects on Drift-Tearing Mode(Gases, plasmas, electric discharges, and beams)
- Numerical Simulation of Resistive Drift Wave Turbulence in a Linear Device(Gases, plasmas, electric discharges, and beams)
- Selection of a Radial Wavelength of Zonal Flows(Gases, plasmas, electric discharges, and beams)
- On Flow Reversal in Turbulent Swirling Flow
- Probabilistic Excitaion of Plasma Transitions
- Spectrum of Subcritical Turbulence in an Inhomogeneous Plasma
- Current Diffusive Ballooning Mode in a Tokamak with a Noncircular Cross Section
- Subcritical Excitation of Plasma Turbulence
- On Circulating Power of Steady State Tokamaks
- Entropy Production and Inward Heat Pinch of Plasma
- Ohmic Scaling Based on Current Diffusive Ballooning Mode
- Current-Diffusive Ballooning Mode in Low Shear and Negative Shear Regions of Tokamaks
- Prandtl Number of Toroidal Plasmas
- Cross Field Ion Motion at Sawtooth Crash
- Comparison Analysis of Lorenz Model and Five Components Model
- Analysis on Anomalous Conductivity and Heat Pulse Propagation in Tokamak
- Effect of Microscopic Turbulence on Magnetic Island(Gases, Plasmas and Electric Discharges)
- High Temperature Divertor Plasma Operation
- Bohm-like Dependence of Transport in Scrape-off Layer Plasmas
- Statistical Analysis Technique for Estimation of Causal Relationship in Plasma Turbulence
- Kinetic Description of Nonlinear Plasma Turbulence
- Bi-Coherence Analysis of Fluctuations with Long Distance Correlation in Toroidal Plasmas
- High-Density, Low Temperature Ignited Operations in FFHR
- Observation of Nonlinear Coupling between Low Frequency Coherent Modes and Background Turbulence in LMD-U
- Nonlinear Drive of Tearing Mode by Microscopic Plasma Turbulence
- Geodesic Acoustic Eigenmodes
- Nonlinear Simulation of Collapse Phenomenon in Helical Plasma with a Large Pressure Gradient
- Interchange Turbulence and Radial Transport in Tokamak Scrape-Off Layer Dominated by Meso Scale Structure
- Experimental Study of Nonlinear Processes in Edge Turbulence of Toroidal Plasmas
- Density Regimes of Complete Detachment and Serpens Mode in LHD
- Investigation of Carbon Films on Material Probes in the Vicinity of Local Island Divertor in the Large Helical Device
- New Control Method of the Unstable Operating Point in the FFHR Helical Reactor
- Pellet Injection and Internal Diffusion Barrier Formation in Large Helical Device
- Characteristics of Radiating Collapse at the Density Limit in the Large Helical Device
- Heat- and Particle-Deposition Distribution on Helical Divertor Plates in LHD During Real-Time Magnetic-Axis Swing Operations
- Effect of Externally Driven Magnetic Islands on Resistive Ballooning Turbulence
- Observation of Competition between Drift Instability and Flute Instability in a Bounded Linear ECR Plasma
- A Study on Low-Frequency Fluctuations Using New Azimuthal Probe Array in High-Density Helicon Linear Plasma
- LHD Bootstrap Current Coefficient Calculations with the VENUS+δ f code
- Time Evolution of Power Spectrum Density in Spontaneous Transition in Cylindrical Magnetized Plasma
- Microwave Imaging Reflectometry Experiment in TPE-RX
- Neoclassical Transport Properties in High-Ion-Temperature Hydrogen Plasmas in the Large Helical Device (LHD)
- Detection of Cascading in Drift Wave Turbulence Using Probe Array in Linear Plasmas
- Life Time of Plasma States near Transition Boundary(Gases, Plasmas and Electric Discharges)