Quasi-Optical High Purity HE11-Mode Exciter for Oversized Corrugated Waveguide Transmission
スポンサーリンク
概要
- 論文の詳細を見る
Oversized corrugated waveguide transmissions are used to transmit high power millimeter wave for electron cyclotron heating in ITER. The HE11 mode purity of the waveguide components is a critical issue not only in the high power operation but also in the low power operation to evaluate the components. Conventional single Gaussian beam system causes edge diffraction and excites higher order modes at the waveguide aperture. A proposed HE11-mode exciter uses beam interference between two Gaussian beams interference and serves the high purity HE11 mode without the edge diffraction. The HE11-mode exciter consists of a scalar feed horn antenna, quasi-optical mirrors and a beam splitter (combiner). Phase matched mirrors correct the Gaussian-like beam excited from the horn antenna to pure Gaussian beam. Authors report the experimental study of the exciter.
- 社団法人 プラズマ・核融合学会の論文
著者
-
KUBO Shin
National Insitute for Fusion Science
-
Idei Hiroshi
Kyushu Univ. Fukuoka Jpn
-
SHIGEMATSU Takashi
FURUKAWA C&B CO., LTD
-
SAITO Tetsuji
FURUKAWA C&B CO., LTD
-
IDEI Hiroshi
Kyushu University
-
SAKAGUCHI Masatsugu
Kyushu University
関連論文
- Achievement of 10 keV Central Electron Temperatures by ECH in LHD
- Measurement of Edge Density Profiles and Fluctuations in the H-Mode Discharge of the Compact Helical System (CHS) with a Thermal Neutral Lithium Beam Probe
- Effect of Plasma Current on Magnetohydrodynamic Modes in Neutral Beam Heated Plasmas in Compact Helical System
- Model of Inductive Plasma Production Assisted by Radio-Frequency Wave in Tokamaks(Gases, plasmas, electric discharges, and beams)
- Analysis of Radial Electric Field Bifurcation in LHD Based on Neoclassical Transport Theory
- Transition of Edge Particle Transport in CHS
- Extension of Improved Particle and Energy Confinement Regime in the Core of LHD Plasma
- Causal Relationship between Zonal Flow and Turbulence in a Toroidal Plasma(Gases, plasmas, electric discharges, and beams)
- Measurement of Space Potential Fluctuations During MHD Activities in a Toroidal Helical Plasma with a Heavy Ion Beam Probe
- Proposal of a Single Sweep Measurement of a Potential Profile in Tokamak Plasmas by High Voltage Heavy Ion Beam Probes
- Increase of Lifetime of Thallium Zeolite Ion Source for Single-Ended Accelerator
- Improvement in Plasma Heating at Higher-Density Region Using 106.4GHz Electron Cyclotron Heating System for Compact Helical System(Gases, plasmas, electric discharges, and beams)
- Statistical Estimation of Power Deposition Profile in Electron Cyclotron Heated Plasmas
- Band Rejection Filter for Measurement of Electron Cyclotron Emission during Electron Cyclotron Heating
- Electron Cyclotron Emission from Optically Thin Plasma in Compact Helical System
- Mode-Content Analysis and Field Reconstruction of Propagating Waves in Corrugated Waveguides of an ECH System
- Potential Measurement with the 6-MeV Heavy Ion Beam Probe of LHD
- Dynamic Transport Study of Electron Thermal Energy in Nonlinear Fusion Plasma
- Long Range Temperature Fluctuation in LHD
- Estimation of the Effective Collective Thomson Scattering Volume Using a Gaussian Beam in the LHD ECRH System
- Transport Dynamics and Multi-Scale Coupling of Turbulence in LHD
- Electron Heat Transport Analysis of Low-Collisionality Plasmas in the Neoclassical-Transport-Optimized Configuration of LHD
- Improvement of Ion Confinement in Core Electron-Root Confinement (CERC) Plasmas in Large Helical Device
- Experimental Conditions for Electron Bernstein Wave Heating Using EC Waves Injected from High-Field Side in CHS
- Collective Thomson Scattering Study Using Gyrotron in LHD
- Observation of Space and Energy Distributions of High Energy Electrons Produced in ECH Plasmas of LHD
- Bi-Coherence Analysis of Fluctuations with Long Distance Correlation in Toroidal Plasmas
- QUEST Experiments Towards Steady State Operation of Spherical Tokamaks
- Statistical Analysis of the Convective Intermittent Transport at the Edge Region of QUEST
- Modeling of OXB Mode Conversion Scenario for EBWH/CD Experiments in QUEST
- A Plasma Shape Identification with Magnetic Analysis for the Real-time Control on QUEST
- Conceptual Design and Prototype Performance of Phased-array Antenna for EBWH/CD Experiments in QUEST
- Development of Collective Thomson Scattering Diagnostic for Bulk and Fast Ions in the Large Helical Device
- First Observation of ECH by Electron Bernstein Waves Excited via X-B Mode Conversion Process in LHD
- Present Status in the Development of 6 MeV Heavy Ion Beam Probe on LHD
- Design and Installation of a New Electron Cyclotron Emission Diagnostic Antenna in LHD
- First Demonstration of Rotational Transform Control by Electron Cyclotron Current Drive in Large Helical Device
- 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
- ECW/EBW Heating and Current Drive Experiment Results and Prospects for CW Operation in QUEST
- Effect of Ellipticity on Thermal Transport in ECH Plasmas in LHD
- Electron Bernstein Wave Heating through Slow X-B Mode Conversion in CHS
- Dependence of EC-Driven Current on the EC-Wave Beam Direction in LHD
- O-X-B Heating of Overdense Plasmas by 54.5 GHz Electron Cyclotron Waves in CHS
- Density Control by Second Harmonic X-Mode ECRH in LHD
- ECCD Experiment Using an Upgraded ECH System on LHD
- High Power and High Efficiency Operation of 77 GHz Gyrotrons by Stepwise Raising of the Anode Voltage
- Efficient Heating at the Third-Harmonic Electron Cyclotron Resonance in the Large Helical Device
- Experimental Results for Electron Bernstein Wave Heating in the Large Helical Device
- ECCD Experiments in Heliotron J, TJ-II, CHS, and LHD
- Quasi-Optical High Purity HE11-Mode Exciter for Oversized Corrugated Waveguide Transmission
- Notch Filter in 70 GHz Range for Microwave Plasma Diagnostics
- Bifurcation-Like Behavior of Electrostatic Potential in LHD