Helium Ion Observation during 3rd Harmonic Ion Cyclotron Heating in Large Helical Device
スポンサーリンク
概要
- 論文の詳細を見る
In higher harmonic ion cyclotron resonance heating using the fast wave, a helium resonance layer appears near the plasma core. It is very important to detect the helium ions to investigate the confinement of α particles, which are produced by a nuclear reaction in ITER or a fusion reactor. In Large Helical Device (LHD), we attempt to observe the charge-exchange helium particles using a compact neutral particle analyzer (CNPA). Helium acceleration below 5 keV can be confirmed by comparing the signal ratio of helium in adjusted plate voltages of the CNPA to that of hydrogen. Successful helium measurement in LHD will lead to the development of α particle measurement.
著者
-
SEKI Tetsuo
National Insitute for Fusion Science
-
SUDO Shigeru
National Insitute for Fusion Science
-
GONCHAROV Pavel
National Institute for Fusion Science
-
OZAKI Tetsuo
National Institute for Fusion Science
-
VESHCHEV Evgeny
Graduate University for Advanced Studies, Hayama 240-0193, Japan
-
OHSAKO Takuya
Department of Complexity Science and Engineering, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
-
GONCHAROV Pavel
National Institute for Fusion Science, 322-6 Oroshi, Toki Gifu 509-5292, Japan
-
KASAHARA Hirofumi
National Institute for Fusion Science, 322-6 Oroshi, Toki Gifu 509-5292, Japan
-
SUDO Shigeru
National Institute for Fusion Science, 322-6 Oroshi, Toki Gifu 509-5292, Japan
-
TAKASE Yuichi
Department of Complexity Science and Engineering, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
関連論文
- 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
- 可視分光法によるHeおよびNeシｰトプラズマ中のイオン温度測定
- Prevention of Reversed Flow in Gas Divertor with High Vacuum Chamber
- ストリング・プラズマ、シート・プラズマのイオン温度測定
- ストリング･プラズマの分光測定
- Local Impurity Deposition in a Magnetic Island by Means of a Tracer-Encapsulated Solid Pellet in the LHD
- Density Profile Effects On Confinement and MHD Stability of Currentless NBI Plasmas in Heliotron E
- Applicability of Laser Phase Contrast Method for the Measurements of Electron Density Fluctuations in High-Temperature Plasmas
- Reconstruction of Edge-Plasma Density Profiles by Neutral Beam Probe Spectroscopy
- Application of Fraunhofer-Diffraction Method for Measurements of Electron Density Fluctuations in Heliotron E
- Spectrum Identification of Heliotron E Plasma Impurities by a Time-Resolving Grazing Incidence Spectrometer with a Multichannel Detector : Nuclear Science, Plasmas and Electric Discharges
- The Sources of Fe Impurity in Heliotron E Plasma during NBI : Nuclear Science, Plasmas and Electric Discharges
- Studies of Particle Behaviour in Heliotron E by Means of Balmer-Alpha Laser Fluorescence Spectroscopy
- Neutral Density Measurements by Charge Exchange Analysis on the Heliotron E Plasma
- Two Pulse and Multiple Position Thomson Scattering System
- Ray Tracing Analyses of Current-Free ECRH Plasmas in Heliotron E
- Extension of Improved Particle and Energy Confinement Regime in the Core of LHD Plasma
- Characteristics of Electron Density Fluctuations in Heliotron E Measured Using a Wide Beam Laser Phase Contrast Method
- Steady-State Operation Scenario and the First Experimental Result on QUEST
- Age distribution of the sea urchin Strongylocentrotus nudus (A. Agassiz) in relation to algal zonation in a rocky coastal area on Oshika Peninsula, northern Japan
- Distribution of Benthic Invertebrates in Relation to Zonal Structure of Algal Communities in a Rocky Sublittoral Area, Tomari-hama, Oshika Peninsula, Northern Japan
- Involvement of lectin-like factors in larval settlement and metamorphosis in the abalone, Haliotis discus hannai
- 13aQA-4 Charge Exchange Measurements on LHD Heliotron with a Compact Neutral Particle Analyzer
- Experimental Study of the Spectral Characteristics of a High Power, Pulsed D_2O Laser for Application to Plasma Diagnostics
- Measurements of Cloud Densities Surrounding Impurity Carbon Pellets
- Electrical Properties of Bromine-Doped Nickel (Phthalocyanine) Films and Their Structural Change : Chemistry (incl. physical process)
- Electrical Properties of Iodine-Doped Nickel (Phthalocyanine) Films
- Calibration of Compact Electron Spectrometer for the FIREX-I Project in Gekko XII
- Ion Distribution Function Evaluation Using Escaping Neutral Atom Kinetic Energy Samples
- Simulation of Angle and Energy Resolved Fluxes of Escaping Neutral Particles from Fusion Plasmas with an Isotropic Ion Distribution
- An Analysis of an ICRF Antenna with Controllable Toroidal Wavenumber in LHD
- Long Range Temperature Fluctuation in LHD
- Study of Plasma-Surface Interaction Control by Light Atom Pellet Injection
- Diagnostics of Particle Transport by Double-Layer Pellet
- Study of the Antenna Loading Resistance of the LHD ICRF Antenna
- Helium Ion Observation during 3rd Harmonic Ion Cyclotron Heating in Large Helical Device
- X-ray Measurements during Plasma Current Start-up Experiments using the Lower Hybrid Wave on the TST-2 Spherical Tokamak
- Characterization of Ion Cyclotron Wall Conditioning Using Material Probes in LHD
- High Frequency Alfvén Eigen Modes Observed in LHD
- First Demonstration of Rotational Transform Control by Electron Cyclotron Current Drive in Large Helical Device
- ECW/EBW Heating and Current Drive Experiment Results and Prospects for CW Operation in QUEST
- Improved Pellet Charge Exchange Measurements in Large Helical Device
- Multi-Functional Diagnostic Method with Tracer-Encapsulated Pellet Injection
- 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
- Ion Heating Experiments Using Perpendicular Neutral Beam Injection in the Large Helical Device
- New 20-Channel Diagnostic for Angle-Resolved Fast Particles Measurements in LHD
- Neoclassical Transport Properties in High-Ion-Temperature Hydrogen Plasmas in the Large Helical Device (LHD)
- Electromagnetic Field Simulation for ICRF Antenna and Comparison with Experimental Results in LHD
- ICRF Heating in Helical Reactor
- Impurity Transport Study with TESPEL Injection and Simulation