Effects of Radially Sheared Electric Field on Turbulence Reduction Analyzed with End-Loss Analysing Systems
スポンサーリンク
概要
- 論文の詳細を見る
Mirror devices, having open-ended regions, provide intrinsic important advantages in terms of the control of radial-potential or Er shear profiles on the basis of axial particle loss control for ambipolar potential formation. From the viewpoint of the mechanism investigation of radially localized transport-barrier formation, an idea of off-axis-resonant electron-cyclotron heating (ECH) is proposed and applied in the tandem mirror GAMMA 10, by the use of the aforementioned intrinsic advantage of mirror devices. The off-axis ECH produces a cylindrical layer with energetic electrons and facilitates the formation for a localized bumped ambipolar potential with a strong shear of radial electric fields Er. Remarkable effects of dEr/dr on the suppression of turbulent fluctuations with plasma confinement improvement are found by the use of signals of end-loss currents flowing from the central cell as well as the central-cell soft x ray. In association with the reduction of the fluctuations due to strong Er shear formation, increases in ion and electron temperatures are found.
著者
-
Ogura Kazuo
Graduate School Of Science And Technology Niigata University
-
Miyoshi Syoichi
Plasma Research Center The University Of Tsukuba
-
Cho Teruji
Plasma Research Center The University Of Tsukuba
-
KARIYA Tsuyoshi
Plasma Research Center, University of Tsukuba
-
Imai Tsuyoshi
Plasma Research Center, University of Tsukuba
-
Kohagura Junko
Plasma Research Center University Of Tsukuba
-
Hirata Mafumi
Plasma Research Center University Of Tsukuba
-
NUMAKURA Tomoharu
Plasma Research Center, University of Tsukuba
-
MINAMI Ryutaro
Plasma Research Center, University of Tsukuba
-
KONDOH Takashi
Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
-
MIYATA Yoshiaki
Plasma Research Center, University of Tsukuba
-
MIYATA Yoshiaki
Plasma Research Center, University of Tsukuba, Ibaraki 305-8577, Japan
-
KARIYA Tsuyoshi
Plasma Research Center, University of Tsukuba, Ibaraki 305-8577, Japan
-
KIMINAMI Serina
Plasma Research Center, University of Tsukuba, Ibaraki 305-8577, Japan
-
ITO Marie
Plasma Research Center, University of Tsukuba, Ibaraki 305-8577, Japan
-
MORIMOTO Naoyuki
Plasma Research Center, University of Tsukuba, Ibaraki 305-8577, Japan
-
HIRAI Katsuaki
Plasma Research Center, University of Tsukuba, Ibaraki 305-8577, Japan
-
YAMAGISHI Tooru
Plasma Research Center, University of Tsukuba, Ibaraki 305-8577, Japan
-
IKUNO Toshinori
Plasma Research Center, University of Tsukuba, Ibaraki 305-8577, Japan
-
NAMIKI Shohei
Plasma Research Center, University of Tsukuba, Ibaraki 305-8577, Japan
-
KARIYA Tsuyoshi
Plasma Research Center, Tsukuba University
-
CHO Teruji
Plasma Research Center, University of Tsukuba, Ibaraki 305-8577, Japan
-
IMAI Tsuyoshi
Plasma Research Center, Tsukuba University
-
MINAMI Ryutaro
Plasma Research Center, Tsukuba University
-
KOHAGURA Junko
Plasma Research Center, University of Tsukuba, Ibaraki 305-8577, Japan
関連論文
- Linear Analysis of a Localized Plasma-Loaded Backward Wave Oscillator Driven by an Annular Intense Relativistic Electron Beam
- Observation of Ion Confining Potential Enhancement due to Thermal Barrier Potential Formation and Its Scaling Law in the Tandem Mirror GAMMA 10
- 26aA16P Study on Distributed Divertor Configuration in a Mirror Cell
- 27pB06P Study on Anchor-cell Plasma Properties of the GAMMA10 Tandem Mirror
- タンデムミラ-GAMMA 10 によるプラズマ閉じ込め
- Measurement of Electron Cyclotron Emission from the Tandem Mirror GAMMA 10
- Simulation Study on Sloshing Ion Formation and Sustainment of Associated Potential Dip in a Plug Cell of GAMMA 6
- Temperature Anisotropy Measurement Using Diamagnetic Loop Array
- Electrostatic Potential in the Endcells of a Tandem Mirror under Electron Cyclotron Resonance Heating
- Velocity-Space Diffusion of Wave-Heated Electrons in a Mirror Field
- Calculation of Diamagnetic Current in a Quadrupole Minimum B Mirror Field
- Plasma Current Sustainment and Ramp-Up by Electron Cyclotron Waves in the WT-2 Tokamak
- Formation of High Energy Electron Tail during rf Plasma Current Start-Up in the WT-2 Tokamak
- Current Sustainment by lower Hybrid Waves in the WT-2 Tokamak
- Toroidal Plasma Current Start-Up and Sustainment by rf in the WT-2 Toroidal Device
- Electron Cyclotron Resonance-Preionization in the WT-1 Tokamak
- Toroidal Current Drive by Lower Hybrid Wave in WT-2 Tokamak
- Observation of the Upper-Hybrid Soliton and Its Recurring Behaviour
- Characteristics of a Large Area High Sensitivity Particle Detector
- RF Plugging of a Mirror Confined Plasma
- Pitch-Angle Measurement of Ions by the Use of a Small Faraday Cup
- Cross-Field Propagation of Intense Pulsed Ion Beams
- Propagation of Intense Pulsed Ion Beams across a Magnetic Field
- Potential Enhancement Due to RF-Induced Parallel Velocity Space Diffusion in a Tandem Mirror
- Electron Temperature Measurement by Electron Cyclotron Emission from Tandem Mirror GAMMA 10
- Resonant Enhancement of Radiation from a Backward Wave Oscillator Utilizing Large Diameter Corrugated Metal Structure
- Absolute Instability of Low-Frequency Electromagnetic Waves in a Plasma Waveguide with Periodic Boundaries
- Analysis on Field Line and Poynting Vectors in Corrugated Wall Waveguides
- Effect of Beam Energy Spread on Radiation Intensity in a High-Power Backward Wave Oscillator with Finite Length
- Electromagnetic Field Properties of Axial Modes in a Finite Length X-Band Slow Wave Structure
- Study of Potential Formation in an Open Magnetic Field Configuration
- Energy Analysis of ECRH-Induced End-Loss Warm Electrons in a Tandem Mirror
- Mode-Selective Directional Coupler for High Power Microwave Measurements
- Observation of Frequency Pulling Effect in Gyrotron
- A Pinhole Camera with Microehannel Plates for Hot Electron Spatial Distribution Measurement
- Study of the Sloshing Ion Formation in a Minimum B Mirror Field
- Radial Plasma Confinement Time in the Central Cell of GAMMA 6 Determined from Measurements with a Charge Collector
- Analysis of Starting Currents in a Backward Wave Oscillator with Finite Structure Length
- Interaction of Axially Streaming Electron Beam with Axisymmetric TM Mode in a Periodical Slow Wave Structure with Finite Magnetic Field
- Electostatic Instability Due to Axial Varation of E×B Drift in Tandem Mirrors
- Spontaneous Formation of Spherical Tokamak by ECH on LATE
- Cross-Field Propagation of Intense Neutralized Proton Beam near a Metal Plate
- Numerical Simulation on the Flute Instabilities in the GAMMA10 Magnetic Field
- Observation of a Flute Mode Excited in the Center Cell of the GAMMA 10 Tandem Mirror by Using Far-Infrared Laser Scattering
- Application of Millimeter-Wave Phase-Imaging Interferometry to the Tandem Mirror GAMMA 10
- Thermalization of Energetic Ion Beam in a Turbulent Plasma
- Performance of Weakly Relativistic Oversized Backward Wave Oscillators
- Cherenkov and Slow Cyclotron Instability in Periodically Corrugated Cylindrical Waveguide with Low Magnetic Field Region
- Role of Flute Modes in the GAMMA10 Tandem Mirror
- E1 Plasma Diagnostics for GAMMA-6 Experiment
- Studies of a Weakly Relativistic Oversized Backward Wave Oscillator with Disk Cathode and Rectangular Corrugation
- Evaluation of the Heating Effect in Neutral Beam Injection Experiments of the GAMMA 10 Tandem Mirror
- Investigation on Optimal Limiter Condition for Stable Sustainment of the Potential Confined Plasma in GAMMA 10
- Plasma Imaging by Using a High-speed Camera in the GAMMA 10 Tandem Mirror
- Study of Fluctuation Suppression during Potential Formation in the Tandem Mirror GAMMA 10
- Correlation between Low-Frequency Fluctuations and Plasma Stored Energy in GAMMA 10
- Measuring Electron Temperature in the Tandem Mirror GAMMA 10 Plasma Using a Yttrium-Aluminum-Garnet Thomson Scattering System
- Observation of Ion Cyclotron Emission Owing to DD Fusion Product H Ions in JT-60U
- Nonaxisymmetric Instabilities in Periodically Corrugated Cylindrical Waveguide with Low Magnetic Field
- Experimental Demonstration of Mode Change in a Q-Band Oversized Backward Wave Oscillator due to Corrugation Number
- First Results of Simultaneous Multipoint Plasma Potential Measurements Using a Gold Neutral Beam Probe
- Ion Transport in Real and Velocity Space and Confinement in the GAMMA 10 Tandem Mirror
- Experimental Study of Oversized Backward Wave Oscillator with Coaxial Slow-Wave Structure
- Cherenkov Instability due to Unmagnetized Electron Beam in Periodically Corrugated Waveguide
- 29aC09P Puffing gas flow modulation experiment in the GAMMA 10 tandem mirror
- 29aC27P GAMMA10磁場中における粒子の写像方程式を用いた拡散の研究(ミラー他)
- Measurement of Spatiotemporal Behavior of Alfvén-Ion-Cyclotron Waves in the GAMMA10 Tandem Mirror
- Preliminary Simulation Study of Doppler Reflectometry
- Effects of Radially Sheared Electric Field on Turbulence Reduction Analyzed with End-Loss Analysing Systems
- The Stability of Flute Modes in the GAMMA10 A-divertor
- Observation of the Pitch Angle Distribution of High-Energy Ions and their Radial Transport in the Central Cell of GAMMA10
- Experimental Study of Slow Cyclotron Maser Operation in Weakly Relativistic Region
- Development of Collective Thomson Scattering for Alpha-Particle Diagnostic in Burning Plasmas
- Design of Reflecting Mirrors for Electron Cyclotron Wave Launching System in GAMMA 10
- Improvement of Power Transmission for Fundamental Electron Cyclotron Resonance Heating System in GAMMA 10 Central Cell
- Operation Characteristics of Microwave Sources Based on Slow-Wave Interaction in Rectangular Corrugation
- Numerical Study of Instabilities Induced by Sheet Electron Beam on Corrugated Metal Plate
- ECW/EBW Heating and Current Drive Experiment Results and Prospects for CW Operation in QUEST
- Improvement of ICRF Antenna Loading in the Minimum-B Configuration on GAMMA 10
- The Neutral Transport Analysis Based on Visible Light Measurement of Recycling and 3-Dimensional Simulation in GAMMA 10
- Density Fluctuation Measurement for Studying the Effect of Potential and Electric Field Formation in GAMMA 10
- Measurements of Oxygen Ion Spectra for Estimation of Electric Field Profiles in Cylindrical Plasmas
- Electron Density Measurement by Using a Multi-Channel Interferometer System in the Tandem Mirror GAMMA 10
- High-Speed Visible Imaging of the Central-Cell Plasmas in the GAMMA 10 Tandem Mirror
- Behavior of Hydrogen Fueled by Pellet Injection in the GAMMA 10 Tandem Mirror
- Numerical Study of Electromagnetic Surface Wave on Corrugated Metal Surface
- High Power and High Efficiency Operation of 77 GHz Gyrotrons by Stepwise Raising of the Anode Voltage
- Weakly Relativistic K-Band Oversized Backward Wave Oscillator with Bragg Reflector at Beam Entrance of Slow Wave Structure
- Experimental Study on Backward Wave Oscillation Based on Cylindrical Surface Wave of Smith-Purcell Free Electron Laser
- Development of the Monitoring System of Plasma Behavior Using a CCD Camera in the GAMMA 10 Tandem Mirror
- Analysis of Neutral Transport in GAMMA 10 SMBI Experiments
- Identification of Spurious Modes of High-Power 77-GHz Gyrotron for Collective Thomson Scattering in LHD
- Instability Driven by a Finitely Thick Annular Beam in a Dielectric-Loaded Cylindrical Waveguide
- Study of Hot Electron Production Due to Second Harmonic Electron Cyclotron Heating in the Axisymmetrized Tandem Mirror GAMMA 10
- First Observation of Plasma Motion in GAMMA 10 Using a Fast Camera
- Numerical Analysis of Slow-Wave Instabilities in an X-Band Sinusoidally Corrugated Waveguide with Coaxial Slow-Wave Structure
- Numerical Analysis of Slow-Wave Instabilities in an Oversized Sinusoidally Corrugated Waveguide Driven by a Finitely Thick Annular Electron Beam
- Higher Order Mode Radiations of Weakly Relativistic Oversized Backward Wave Oscillator