Directory of Researchers
| TAKENO Hiromasa |  |
| Graduate School of Engineering / Department of Electrical and Electronic Engineering | |
| Professor | |
| Other Natural Science Field |
Researcher Profile and Settings
Affiliation
＜Faculty / Graduate School / Others＞
Graduate School of Engineering / Department of Electrical and Electronic Engineering＜Related Faculty / Graduate School / Others＞
Faculty of Engineering / Department of Electrical and Electronic Engineering
Teaching
- Faculty of Engineering / Department of Electrical and Electronic Engineering, 2022, Electric Power Engineering IA
- Faculty of Engineering / Department of Electrical and Electronic Engineering, 2022, Electric Power Engineering IB
- Faculty of Engineering / Department of Electrical and Electronic Engineering, 2022, Electric Power Engineering ⅡA
- Faculty of Engineering / Department of Electrical and Electronic Engineering, 2022, Electric Power Engineering ⅡB
- Faculty of Engineering / Department of Electrical and Electronic Engineering, 2022, Electric Power Engineering
- Faculty of Engineering / Department of Electrical and Electronic Engineering, 2022, High Voltage and Discharge Engineering A
- Faculty of Engineering / Department of Electrical and Electronic Engineering, 2022, High Voltage and Discharge Engineering
- Faculty of Engineering / Department of Electrical and Electronic Engineering, 2022, High Voltage and Discharge Engineering B
- Graduate School of Engineering / Department of Electrical and Electronic Engineering, 2022, Advanced Course on Plasma Engineering
- Graduate School of Engineering / Department of Electrical and Electronic Engineering, 2022, Advanced Plasma Applications
Research Activities
Research Interests
Research Areas
- Energy / Nuclear fusion
- Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Electrical power engineering
- Energy / Basic plasma science
- Energy / Applied plasma science
Published Papers
- Japan Society of Plasma Science and Nuclear Fusion Research, 02 Jul. 2020, Plasma and Fusion Research, 15, 2405046 - 2405046, English
[Refereed]
Scientific journal
- The Japan Institute of Power Electronics, Mar. 2020, Journal of the Japan Institute of Power Electronics, 45 (0), 138 - 145, Japanese
[Refereed]
Scientific journal
The characteristics of the gas pressure measurement with the ASDEX type fast ionization gauge (AIG) in the mixture of Hydrogen and Helium is studied in this research. The calibration test stand capable of reproducing the mixture gas environment is assembled and used for the experimental calibration of the ionization gauge. In the experiment, the sensitivity of the AIG against pure hydrogen and pure helium is evaluated in order to eliminate the effect of individual differences among the AIG sensors. The mixture ratio of He in the test stand chamber is controlled from 3% to 15% to simulate the environment in divertor regions of fusion reactors. In the mixture gas, enhancement of the gauge sensitivity around 13% was observed. The enhancement of ionization due to the Penning Transferrer reactions, between the hydrogen atom and the metastable-helium atom is considered to be the main cause of the sensitivity change. Also it is found that the degree of enhancement of the AIG sensitivity can be changed drastically due to the condition of the AIG sensor. The monitoring or predicting the population of metastable-helium atoms will be important for the measurement of the mixture gas pressures. (C) 2019 The Japan Society of Plasma Science and Nuclear Fusion Research
Japan Society of Plasma Science and Nuclear Fusion Research, Jul. 2019, Plasma and Fusion Research, 14 (0), 3405124, English[Refereed]
Scientific journal
- May 2019, Plasma and Fusion Research, 14, 3405078, EnglishExperimental Analysis on Variation of the Amount of Particles Passing Through Traveling Wave Direct Energy Converter
[Refereed]
Scientific journal
- パワーエレクトロニクス学会, Mar. 2019, パワーエレクトロニクス学会誌, 44, 104 - 110, JapaneseStudy on novel power transmission coil structure using resonant tank circuit applicable for wireless power transmission system
[Refereed]
Scientific journal
- Feb. 2019, Plasma and Fusion Research, 14, 2405027, EnglishAnalytical Experiment of Time Evolution of Deceleration Effect in Traveling Wave Direct Energy Converter Using Dual-Frequency Modulation
[Refereed]
Scientific journal
The sensitivity of the ASDEX type ionization gauge (AIG) in the mixture of argon and hydrogen gas, which is a candidate of radiator gas in the radiative divertor, is studied. In a small vacuum chamber, the sensitivity of the AIG is calibrated against capacitance-manometers, which have constant sensitivity for all gas species. Increase of the output signal AIG was observed in the mixture of 25% Ar and 75% H-2, although the actual sensitivity of the gauge against gas pressure is degraded. In the gas pressure larger than 0.8 Pa, the degradation of the sensitivity will be the main concern of the measurements. The results indicated that the molecular ions produced by the collision between the metastable argon atom and hydrogen molecule is the main cause of the change of the sensitivity. The change of sensitivity is analyzed by varying the collision energy of the electrons and the ionization cross-section of the ArH molecular ion is evaluated. (C) 2019 The Japan Society of Plasma Science and Nuclear Fusion Research
The Japan Society of Plasma Science and Nuclear Fusion Research, 2019, Plasma and Fusion Research, 14, 2405029 - 2405029, English[Refereed]
Scientific journal
- Jan. 2019, Plasma and Fusion Research, 14, 2405013, EnglishRecent Advancement of Research on Plasma Direct Energy Conversion
[Refereed]
Scientific journal
- Jan. 2019, Plasma and Fusion Research, 14, 2405014, EnglishExamination of Bunching Effect of Dual-Frequency Modulation in a Traveling Wave Direct Energy Converter Simulator
[Refereed]
Scientific journal
- Nov. 2018, Fusion Engineering and Design, 136, 157 - 161, EnglishPerformance improvement due to additional collectors in a secondary electron direct energy converter simulator
[Refereed]
Scientific journal
- Nov. 2018, Fusion Engineering and Design, 136, 381 - 385, EnglishDevelopment of calorimeter system for conceptual study of CuspDEC divertor
[Refereed]
Scientific journal
- May 2018, Plasma and Fusion Research, 13, 3405050, EnglishMeasurement of Heat Quantity in a Small Cusp-Type Direct Energy Converter for Divertor Thermal Load Reduction
[Refereed]
Scientific journal
Sensitivity of the ASDEX type fast ionization gauge (AIG) to several species of gases; hydrogen, nitrogen, noble gases and their mixtures have been investigated. Mixtures of hydrogen-helium and hydrogen-argon with total gas pressure from 0.2 Pa to 1.5 Pa are investigated in order to simulate the environment of divertor regions. It has been found that the observed output current of AIG in mixed gases are larger than the theoretical output current evaluated from the partial pressures and the sensitivities for pure gases. The enhancement of the AIG sensitivity observed in mixed gas conditions suggests that the ionization is enhanced due to the mixing of different gases. A qualitative analysis on the ionization reactions and their cross-sections has indicated that ionization related with metastable atoms of helium or argon is causing the changes in AIG sensitivity. (C) 2018 The Japan Society of Plasma Science and Nuclear Fusion Research
JAPAN SOC PLASMA SCIENCE & NUCLEAR FUSION RESEARCH, Apr. 2018, Plasma and Fusion Research, 13, 3405029, English[Refereed]
Scientific journal
– In recent years, the power conversion capability of grid-connected power supplies using the photovoltaic generation system have been introduced rapidly. The power conditioning system (PCS) of PV generation system operates the reactive and active power flow control in accordance with the line voltage regulation level. The reactive power flow control by using the PCS and/or SVC can effectively decrease the line voltage level, however, the voltage imbalance of high voltage distributed line become the cause that results simultaneously.
The Japan Institute of Power Electronics, Mar. 2017, Journal of the Japan Institute of Power Electronics, 42, 47 - 52, Japanese
This paper describes the novel power flow controller which is installed near by the pole transformer, to maintain the voltage level the grid-connected distribution line and the voltage imbalance compensation at the high voltage distribution line. Simulation results using the Matlab/Simulink are demonstrating the effectiveness of the proposed power flow converter system.Scientific journal
- Oct. 2016, Annual Report of National Institute for Fusion Science April2015-March2016, 454, EnglishCharge Separation Characteristics of a Newly Constructed CUSPDEC Device Using Permanent Magnets
Research institution
- Sep. 2016, Proceedings of the 21th International Conference on Gas Discharges and their Applications, 2, 573 - 576, EnglishFUNDAMENTAL STUDY OF SOFT MAGNETIC MATERIAL’S RESPONSE TO LIGHTNING SURGE CURRENT
International conference proceedings
Traveling wave direct energy converter (TWDEC) was proposed as an efficient energy recovery device for fast protons produced by D-3He fusion reaction. The application of TWDEC to fusion propulsion system was also studied, and its significant subject was miniaturization of the device. In TWDEC, there is a trade-off between device size and efficiency, and an employment of a decelerator of constant deceleration scheme is promising to realize miniaturization. The paper experimentally examines one of the working characteristics of the constant deceleration scheme by using a relative phase control method called active decelerator. The results of the experiment and corresponding numerical orbit calculation are consistent with the theory of the constant deceleration scheme.
THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, Sep. 2016, Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, 14 (ists30), Pb_105 - Pb_109, English[Refereed]
Scientific journal
In D-3He fusion power generation, an application of direct energy conversion is expected in which separation of charged particles is necessary. A cusp-type direct energy converter (CuspDEC) was proposed as a charge separation device, but its performance was degraded for a high density plasma. The goal of the present study is to establish an additional method to assist charge separation by using a nonlinear effect of a radio frequency (rf) electric field. Following to the previous study, we experimentally examine the effect of an rf field to electron motion in a CuspDEC device. Two ring electrodes were newly installed in a CuspDEC simulator and the current flowing into the electron collector located in the line cusp region was measured on an rf field application. The significant variation in the current was found, and an improvement of the charge separation can be expected by using the phenomenon appropriately.
Japan Society of Plasma Science and Nuclear Fusion Research, 2016, Plasma and Fusion Research, 11 (1), 2405028 - 2405028, English[Refereed]
Scientific journal
In D-3He fusion, most of fusion energy is carried by created protons as kinetic energy, so direct energy conversion can be applied. A traveling wave direct energy converter was proposed as an energy recovering system for these protons, which was composed of a modulator and a decelerator. The axial position of the decelerator is one of the important device parameters for both energy conversion efficiency and device size. The best position for conversion efficiency was considered to be the bunching position at which proton density is the highest, but it was not examined well. In this study, we investigated the dependence of deceleration efficiency on the axial position of the decelerator by using simulation experiments and numerical calculations. The results show that the bunching position is not necessarily the optimum one for conversion efficiency.
Japan Society of Plasma Science and Nuclear Fusion Research, 2016, Plasma and Fusion Research, 11 (1), 2405013 - 2405013, English[Refereed]
Scientific journal
As an energy recovery device for fast protons produced in D-3He nuclear fusion, secondary electron (SE) direct energy converter (SEDEC) was proposed in addition to traveling wave direct energy converter (TWDEC). Some protons passing through a TWDEC come into an SEDEC, where protons penetrate to a number of foil electrodes and emitted SEs are recovered. Following to a development of SE orbit control by magnetic field, dependence on incident angle of protons was examined to optimize structure of SEDEC. Based on a theoretical expectation, experiments were performed by changing incident angle of protons and variation in emission and energy recovery were measured. Both emission and energy recovery increased as the angle increased, and differences with theoretical expectation are discussed.
Japan Society of Plasma Science and Nuclear Fusion Research, 2016, Plasma and Fusion Research, 11 (1), 2405029, English[Refereed]
Scientific journal
In D-3He fusion power generation, an application of direct energy conversion is expected in which separation of charged particles is necessary. A cusp-type direct energy converter (CuspDEC) was proposed as a charge separation device, but its performance was degraded for a high density plasma. The goal of the present study is to establish an additional method to assist charge separation by using a nonlinear effect of a radio frequency (rf) electric field. Following to the previous study, we experimentally examine the effect of an rf field to electron motion in a CuspDEC device. Two ring electrodes were newly installed in a CuspDEC simulator and the current flowing into the electron collector located in the line cusp region was measured on an rf field application. The significant variation in the current was found, and an improvement of the charge separation can be expected by using the phenomenon appropriately.
Japan Society of Plasma Science and Nuclear Fusion Research, 2016, Plasma and Fusion Research, 11 (1), 2405028, English[Refereed]
Scientific journal
In D-3He fusion, most of fusion energy is carried by created protons as kinetic energy, so direct energy conversion can be applied. A traveling wave direct energy converter was proposed as an energy recovering system for these protons, which was composed of a modulator and a decelerator. The axial position of the decelerator is one of the important device parameters for both energy conversion efficiency and device size. The best position for conversion efficiency was considered to be the bunching position at which proton density is the highest, but it was not examined well. In this study, we investigated the dependence of deceleration efficiency on the axial position of the decelerator by using simulation experiments and numerical calculations. The results show that the bunching position is not necessarily the optimum one for conversion efficiency.
Japan Society of Plasma Science and Nuclear Fusion Research, 2016, Plasma and Fusion Research, 11 (1), 2405013, English[Refereed]
Scientific journal
- Nov. 2015, Proceedings of 37th International Symposium on Dry Process, 119 - 120, EnglishResearch on reduction of electron energy of microwave plasma using pulsed operation
International conference proceedings
- Nov. 2015, Proceedings of 37th International Symposium on Dry Process, 117 - 118, EnglishRadial distribution control of microwave-excited plasma by continuous pulsed operation in a dual power sources system
International conference proceedings
- Nov. 2015, Annual Report of National Institute for Fusion Science April2014-March2015, 469, EnglishExperimental Verification of Constant Deceleration of TWDEC for its Miniaturization
Research institution
- ENHANCED ENERGY RECOVERY IN A SECONDARY ELECTRON DIRECT ENERGY CONVERTER THROUGH REDUCTION OF THE MAGNETIC MIRROR EFFECT
With an aim to improve the total efficiency of a D-(3) He nuclear fusion direct energy conversion system, a secondary electron direct energy converter (SEDEC) is proposed. The incident high-energy protons in an SEDEC penetrate a large number of foil electrodes aligned in the direction of the proton beam, and emitted secondary electrons are recovered. The results of the initial experiments showed that most of the secondary electrons flowed into anteroposterior electrodes and did not arrive at the electron collector located alongside and perpendicular to the direction of the proton beam. A magnetic field was introduced to push the electrons toward the electron collector, but it was not effective for energy recovery. This technical note analyzes the trajectories of electrons in the presence of the magnetic field and proposes and examines a revised arrangement of permanent magnets. The arrangement of the magnets along one side of the proton beam greatly improved the energy recovery; however, the recovery level was lower than that without magnets.
AMER NUCLEAR SOC, Jul. 2015, FUSION SCIENCE AND TECHNOLOGY, 68 (1), 166 - 170, English[Refereed]
Scientific journal
- Apr. 2015, Plasma and Fusion Research, 10, 3406032, EnglishStudies on Plasma Production and Ion Heating by Using Only a Single Helical Antenna for a Simple Thruster
[Refereed]
Scientific journal
- Mar. 2015, Plasma and Fusion Research, 10, 3405013, EnglishExperimental Study on the Constant Deceleration Scheme in Traveling Wave Direct Energy Converter
[Refereed]
Scientific journal
A traveling wave direct energy converter (TWDEC) is expected to be used as an energy recovery device for fast protons produced during the D-3He nuclear fusion reaction. Some protons, however, are not fully decelerated and pass through the device. A secondary electron direct energy converter (SEDEC) was proposed as an additional device to recover the protons passing through a TWDEC. In our previous study, magnetic field was applied for efficient secondary electron (SE) collection, but the SEs were reflected close to the collector due to the magnetic mirror effect and the collection was degraded. Herein, a new arrangement of magnets is proposed to be set away from the collector, and experiments in various conditions are performed. An appropriate arrangement away from the collector resulted in the improvement of SE collection.
The Japan Society of Plasma Science and Nuclear Fusion Research, Mar. 2015, Plasma and Fusion Research, 10, 3405025 - 3405025, English[Refereed]
Scientific journal
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The Japan Society of Plasma Science and Nuclear Fusion Research, 2015, Plasma and Fusion Research, 10, 3405013 - 3405013, English[Refereed]
Scientific journal
- Dec. 2014, Collection of Papers for The 10th Internatinal Conference on Open Magnetic System for Plasma Confinement, 90 - 93, EnglishFundamental Studies on Secondary Electron Direct Energy Converter with Magnetic Field
International conference proceedings
- Dec. 2014, Open Journal of Applied Sciences, 4 (13), 523 - 532, EnglishBi-Directional Excitation of Radio Frequency Waves Using a Helical Antenna in Non-Uniform Plasmas towards a Compact Magnetoplasma Thruster
[Refereed]
Scientific journal
- Dec. 2014, Collection of Papers for The 10th Internatinal Conference on Open Magnetic System for Plasma Confinement, 94 - 97, EnglishAnalysis of Particle Distribution due to Modulation in Traveling Wave Direct Energy Converter
International conference proceedings
- Nov. 2014, Proceedings of PLASMA2014, 18PB - 031, EnglishVariation of Charge Separation due to Radio Frequency Application in a Cusp-type Direct Energy Converter
International conference proceedings
- Nov. 2014, Proceedings of PLASMA2014, 21PA - 044, EnglishProduction and Control of Large-Diameter Microwave Plasmas Using an Antenna Cavity with In-situ Adjusting Mechanism of Radiation Profile of Electric Fields
International conference proceedings
- Nov. 2014, Annual Report of National Institute for Fusion Science April2013-March2014, 514, EnglishNew Structure of Cusp-type Direct Energy Converter Using Permanent Magnets
Research institution
- Nov. 2014, Proceedings of PLASMA2014, 21PA - 046, EnglishDistribution Control of Microwave-Excited Plasma Using a Multi-Slotted Planar Antenna with Double Coaxial Feed System
International conference proceedings
- Feb. 2014, Proceedings of 8th Int'l. Conf. Reactive Plasmas and 31st Symp. Plasma Processing, 6P - PM-S04-P05, EnglishStudies on Hyper Simulation for a New Control of Microwave-Excited Plasma
International conference proceedings
- Nov. 2013, Annual Report of National Institute for Fusion Science April2012-March2013, 503, EnglishVariation of Energy Distribution in a Bias-Type TWDEC Simulator Installed on GAMMA 10
Research institution
This article has no abstract.
The Institute of Electrical Engineers of Japan, 01 Jul. 2013, IEEJ Transactions on Sensors and Micromachines, 133 (7), 406 - 409, Japanese- Jul. 2013, Proceedings of 31st International Conference on Phenomena in Ionized Gases, PS1 - 053, EnglishControl of plasma profile in microwave discharges by using a segmented slot antenna driven by two magnetrons
[Refereed]
International conference proceedings
- Jul. 2013, Proceedings of 31st International Conference on Phenomena in Ionized Gases, PS2 - 058, EnglishBi-directional excitation of ICRF waves in non-uniform plasmas towards a compact RF-driven magnetoplasma thruster
[Refereed]
International conference proceedings
- STUDIES ON HIGH DENSITY PLASMA PRODUCTION AND NEUTRAL PRESSURE CONTROL FOR A CUSP-TYPE DIRECT ENERGY CONVERTER SIMULATOR
As for charge separation capability of cusp-ope direct energy converter (CuspDEC), which is expected to be used in an advanced fusion, high density plasma production has been studied with keeping a collision-less condition of the cusp region. Using a pulsed feeding technique, high density plasma production has been achieved and low gas pressure enough to keep collision-less condition has been evaluated by a simple gas dynamics calculation.
AMER NUCLEAR SOC, May 2013, FUSION SCIENCE AND TECHNOLOGY, 63 (1T), 307 - 309, English[Refereed]
Scientific journal
- STUDIES ON CHARACTERISTICS OF A BIAS-TYPE TRAVELING WAVE DIRECT ENERGY CONVERTER INSTALLED ON GAMMA 10 TANDEM MIRROR
The operating characteristics of traveling wave direct energy converter, which is expected to be used in an advanced fusion, are discussed in the case of broad energy band flux based on the deceleration theory. Comparison of distributions in phase space between different relative phase differences shows a good agreement with the theory. The examination by narrow energy band flux roughly explained that the observed low energy component corresponded to the incident ions around the best matching energy of the decelerator.
AMER NUCLEAR SOC, May 2013, FUSION SCIENCE AND TECHNOLOGY, 63 (1T), 304 - 306, English[Refereed]
Scientific journal
- May 2013, Transactions of Fusino Science and Technology, 63 (1T), 131 - 134, EnglishRecent Results in Research on Direct Energy Conversion for a Fusion System
[Refereed]
Scientific journal
- May 2013, Transactions of Fusino Science and Technology, 63 (1T), 310 - 312, EnglishNumerical Analysis of Particle Orbits for Modulation Process in Traveling Wave Direct Energy Converter
[Refereed]
Scientific journal
- EXAMINATION ON PLASMA PRODUCTION AND ION HEATING FOR ELECTRIC PROPULSION USING A SINGLE HELICAL ANTENNA
A new structure of RP control of plasma for electric propulsion has been proposed With excitation characteristics of a helical antenna and propagation characteristics of waves with rotating field, both plasma production and ion heating will be expected simultaneously by employing a single helical antenna. Basic experiments to examine the proposed structure have been performed, showing consistent results with expected scenario.
AMER NUCLEAR SOC, May 2013, FUSION SCIENCE AND TECHNOLOGY, 63 (1T), 389 - 391, English[Refereed]
Scientific journal
- BASIC CHARACTERISTICS OF SECONDARY ELECTRON EMISSION FROM FOIL ELECTRODES FOR NEW ENERGY RECOVERY SCHEME OF HIGH ENERGY IONS IN AN ADVANCED FUSION
The new energy recovery method using secondary electron emission has been studied in order to improve energy recovery from high energy protons of fusion products in D-He-3 nuclear fusion generation. The model experiments were performed by using the tandem electrostatic accelerator and the basic characteristics were investigated. According to our results, for penetration aluminum is better as a target material than copper, H+ is better than He2+, and higher energy beam is better which agree with numerical calculations. A qualitative characteristic of secondary electron emission dependence on beam energy was also obtained.
AMER NUCLEAR SOC, May 2013, FUSION SCIENCE AND TECHNOLOGY, 63 (1T), 301 - 303, English[Refereed]
Scientific journal
- Nov. 2012, Annual Report of National Institute for Fusion Science April2011-March2012, 490, EnglishCharge Separation Characteristics of a Cusp-type Direct Energy Converter Simulator in a Wide Density Region
Research institution
Proposed is a new type of magnetoplasma thruster using one radio frequency system for both plasma production and ion heating. This is accomplished with a rotating field antenna consisting of a pair of antenna windings, which are fed by two radio frequency outputs with relative phase difference of -n to n. If the rotating field antenna excites, by a proper phasing, the fields polarized in left-hand sense with respect to the external magnetic field, the fields couple to slow ion cyclotron waves that accelerate ions at the ion cyclotron resonance. On the other hand, the right-hand polarized fields produced by opposite phasing do not couple with the slow waves and their energy goes to electrons via fast wave excitation and enhances ionization. It is experimentally verified that for hydrogen plasmas the density of produced plasmas and the temperature of heated ions change sinusoidally with the phase difference peaking at pi/2 and -pi/2, respectively, showing the ability to control power ratio of the ion heating to the plasma production by only changing the phase difference. At optimum condition, the exhaust velocity of ions corresponds to the specific impulse of 6000s. It is thus demonstrated that the use of the rotating radio frequency system provides novel controllability for the magnetoplasma thruster.
AMER INST AERONAUT ASTRONAUT, Mar. 2012, JOURNAL OF PROPULSION AND POWER, 28 (2), 364 - 370, English[Refereed]
Scientific journal
- STUDIES ON MODULATION PROCESS OF TRAVELING WAVE DIRECT ENERGY CONVERTER FOR ADVANCED FUSION
The first systematic study of the modulation process of traveling wave direct energy converter (TWDEC), an efficient energy recovery device for fast protons created in an advanced fusion, has been presented. The necessary conditions required for a practical TWDEC modulator were examined. The experimental investigation of modulation characteristics for half-wavelength and one-wavelength modulators was performed. In the one-wavelength modulator, the same effect as the half-wavelength modulator can be obtained by half modulation voltages of electrodes. The modulation effect is sensitive with the phase difference between two RF voltages of the one-wavelength modulator, which could be used for control of modulation effect with a fixed electrode structure.
AMER NUCLEAR SOC, Jan. 2012, FUSION SCIENCE AND TECHNOLOGY, 61 (1T), 129 - 133, EnglishScientific journal
- ANALYTICAL EXPERIMENTS USING A BIAS-TYPE TRAVELING WAVE DIRECT ENERGY CONVERTER SIMULATOR INSTALLED ON GAMMA 10 TANDEM MIRROR
In order to investigate working characteristics of traveling wave direct energy converter (TWDEC) to flux with wide energy spread, the second-phase experiments of the research project using end-loss flux of GAMMA 10 were performed. The end-loss flux of the normal operation and that of the one-side plugging operation of GAMMA 10 were introduced to a bias-type TWDEC. The variation of effect of TWDEC operation was examined on relative phase difference between the modulator and the decelerator voltages. Both deceleration and acceleration effect were found according to the relative phase difference for the end-loss flux of both normal and one-side plugging operations.
AMER NUCLEAR SOC, Jan. 2012, FUSION SCIENCE AND TECHNOLOGY, 61 (1T), 125 - 128, EnglishScientific journal
In an advanced fusion, fusion-produced charged particles must be separated from each other for efficient energy conversion to electricity. The CuspDEC performs this function of separation and direct energy conversion. Analysis of working characteristics of CuspDEC on plasma density is an important subject. This paper summarizes and discusses experimental and theoretical works for high density plasma by using a small scale experimental device employing a slanted cusp magnetic field. When the incident plasma is low-density, good separation of the charged particles can be accomplished and this is explained by the theory based on a single particle motion. In high density plasma, however, this theory cannot be always applied due to space charge effects. In the experiment, as gradient of the field line increases, separation capability of the charged particles becomes higher. As plasma density becomes higher, however, separation capability becomes lower. This can be qualitatively explained by using calculations of the modified Sẗormer potential including space charge potential. © 2012 The Japan Society of Plasma Science and Nuclear Fusion Research.
2012, Plasma and Fusion Research, 7 (1), 2405071, English[Refereed]
Scientific journal
- Nov. 2011, Annual Report of National Institute for Fusion Science April2010-March2011, p.490, EnglishStudies on Two-stage Deceleration Scheme in a Cusp-type Direct Energy Converter Simulator
Scientific journal
- Nov. 2011, Proceedings of Plasma Conference 2011 (CD-ROM), 22P044-P, EnglishResearch on Spatial Distribution Control of Radiation Electric Field from Antenna in Microwave-Excited Plasma
Scientific journal
- Sep. 2011, Proc. 32nd Int'l. ElectricPropulsion Conf., IEPC-2011-057, EnglishBasic Experiment on a Magnetoplasma Thruster Driven by Phase-Controlled RF
Scientific journal
- SIMULATION EXPERIMENTS OF TRAVELING WAVE DIRECT ENERGY CONVERTER ON GAMMA 10 TANDEM MIRROR
Simulation experiments of traveling wave direct energy converter (TWDEC) on GAMMA 10 tandem mirror have been performed. Following to initial experiments reported previously, full biasing system including measurement system has been constructed. The biasing system has successfully worked showing that energy distribution is shifted corresponding to the bias voltage. Examination of approximated energy distribution functions reveals that the deceleration effect by TWDEC operation is found for an appropriate relative phase difference between modulator and decelerator RFs.
AMER NUCLEAR SOC, Jan. 2011, FUSION SCIENCE AND TECHNOLOGY, 59 (1T), 202 - 204, English[Refereed]
Scientific journal
- Jan. 2011, Proceedings of 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, AIAA 2011-1072 (7pp), EnglishNovel Control of Magnetoplasma Thruster by Using a Rotating RF System
International conference proceedings
- CHARGE SEPARATION AND DECELERATION OF HIGH DENSITY PLASMA IN A CUSP TYPE DIRECT ENERGY CONVERTER SIMULATOR
Concerning an application of a cusp type direct energy converter (CUSPDEC) to high density plasma, subjects on charge separation and deceleration have been experimentally investigated, assuming that previously proposed two-stage deceleration scheme will be employed. As a fundamental measurements on two-stage deceleration scheme, the ions reflected by electric field due to the point cusp ion collector have been successfully detected by a sub-collector as a function of the collector voltage. For efficient charge separation and energy conversion, an introduction of a negatively biased grid has been examined, resulting that the assistance of charge separation to cusp field is effective. By employing the negatively biased grid, direct energy conversion by the point cusp collector also achieved with excluding electrons flowing into the collector.
AMER NUCLEAR SOC, Jan. 2011, FUSION SCIENCE AND TECHNOLOGY, 59 (1T), 205 - 207, English[Refereed]
Scientific journal
- Nov. 2010, Annual Report of National Institute for Fusion Science April2009-March2010, p. 485, EnglishFull Bias Experiments of Bias-type TWDEC on GAMMA 10
Scientific journal
- Oct. 2010, Abstract Book of 23rd IAEA Fusion Energy Conference, p. 476, EnglishImprovement of Cusp Type and Traveling Wave Type Plasma Direct Energy Converters Applicable to Advanced Fusion Reactor
[Refereed]
Scientific journal
- Aug. 2010, Journal of Plasma and Fusion Research Series, Vol 9, pp. 237-241, EnglishStudies of Charge Separation Characteristics for Higher Density Plasma in a Direct Energy Converter Using Slanted Cusp Magnetic Field
[Refereed]
Scientific journal
- Aug. 2010, Journal of Plasma and Fusion Research Series, Vol 9, pp. 202-207, EnglishApplication of TWDEC Simulator to End-loss Flux of GAMMA 10 Tandem Mirror
[Refereed]
Scientific journal
- Aug. 2010, Journal of Plasma and Fusion Research Series, Vol 9, pp. 625-629, EnglishA Model for Antenna-Plasma Wave Coupling towards Control of Uniformity in Slot-Excited Microwave Discharges
[Refereed]
Scientific journal
- Oct. 2009, Annual Report of National Institute for Fusion Science April2008-March2009, p. 473, EnglishInitial Results of TWDEC Experiments in GAMMA 10 Tandem Mirror
Scientific journal
- Sep. 2009, Journal of Plasma and Fusion Research Series, Vol. 8, pp. 800-803, EnglishStudy on Wave Mode Control in Slot-excited Microwave Plasmas
[Refereed]
Scientific journal
- Sep. 2009, Journal of Plasma and Fusion Research Series, Vol. 8, pp. 794-799, EnglishNumerical Study on Discharge Characteristics of a Line-shaped Microwave Plasma with a Rectangular Slotted Waveguide
[Refereed]
Scientific journal
- Sep. 2009, Journal of Plasma and Fusion Research Series, Vol. 8, pp. 1501-1504, EnglishAnalysis of Behavior of Charged Particles in Cusp Type Direct Energy Converter for Advanced Fusion
[Refereed]
Scientific journal
- PLASMA DIRECT ENERGY CONVERTER FOR THERMAL IONS USING A SLANTED CUSP MAGNETIC FIELD AND TWO-STAGE DECELERATION
A direct energy converter (DEC) designed for thermal ions escaping from a fusion reactor consists of a cusp magnetic field and one- or two-stage decelerating electrodes. In this CUSPDEC, magnetized electrons are deflected along the field lines of the cusp magnetic field to the line cusp region and collected by an electron collector while weakly magnetized ions can traverse the separatrix and enter into the point cusp region. Thus, ions are separated from electrons, and flow into an ion collector to produce DC power A normal cusp magnetic field enables us to separate electrons and ions for low energy electrons from a test plasma source, but not for electrons with much higher energies from the tandem mirror GAMMA10. The reason for this is found that the high energy electrons do not follow the field lines due to a high potential applied to the ion collector for ion deceleration. Use of a slanted cusp field has resolved the difficulty resulting in good separation. The efficiency of energy conversion of separated ions with wide spread in energy is similar to 55 % for a one-stage decelerating electrode. An additional lateral electrode, together with the existing collector constitutes a two-stage ion collector that provides distributed ion-decelerating fields. The system has revealed improvement in efficiency. From the measured voltage-current characteristics, the efficiency of this two-stage collector is estimated to have a value Of 65-70 % at an optimum condition.
AMER NUCLEAR SOC, Feb. 2009, FUSION SCIENCE AND TECHNOLOGY, 55 (2T), 1 - 8, English[Refereed]
Scientific journal
- IMPROVEMENT OF STRUCTURE OF TRAVELING WAVE DIRECT ENERGY CONVERTER SIMULATOR FOR ION FLUX WITH WIDE ENERGY SPREAD
In D-(3)He fusion, most of fusion energy is carried by kinetic energy of created protons of 14.7MeV. Concept of traveling wave direct energy converter (TWDEC) was proposed as an effective energy converter with less handling voltage. Although fundamental researches on TWDEC have been reported, the dependence on energy spread of flowing ions has not been investigated in spite of its significant effects against conversion efficiency. The paper treats this subject by an application of TWDEC simulator to GAMMA 10 tandem mirror whose end-loss flux has relatively wide energy spread The energy distribution of the end-loss flux was measured, and a new structure of TWDEC simulator was designed according to the measured result. The conversion efficiency was estimated by one-dimensional numerical orbit calculations showing the designed structure had enough performance as TWDEC.
AMER NUCLEAR SOC, Feb. 2009, FUSION SCIENCE AND TECHNOLOGY, 55 (2T), 114 - 117, English[Refereed]
Scientific journal
Two types of direct energy converters, cusp direct energy converter (CUSPDEC) and travelling-wave (TW) DEC, used to produce electricity from thermal ions and fusion products in an advanced fuelled fusion, are investigated using small-scale devices. In CUSPDEC, magnetized electrons are deflected along the field lines of the cusp magnetic field to the line cusp region and collected by an electron collector, while weakly magnetized ions can traverse the separatrix and enter into the point cusp region. Thus, ions are separated from electrons, and flow into an ion collector to produce dc power. Efficiencies of energy conversion of separated ions with large thermal spread of energy are measured to be ∼55%. An additional lateral electrode, together with the existing collector, constitutes a two-stage ion collector that provides distributed ion-decelerating fields. From the measured voltage-current characteristics, the efficiency of this collector is estimated to be improved to 65-70%, which is consistent with the calculation. Fusion-produced fast ions enter into TWDEC and are velocity-modulated by RF fields, bunched and then decelerated by RF travelling-wave fields on the decelerator to produce RF power. The TWDEC device has shown that the energies of ions of 3-6 keV can be decreased by 10-15% for a one-wavelength decelerator. This would give a total efficiency of 60-70% for a full-length decelerator. A novel system is being investigated for further improvement, in which the incoming ions are deflected transversely, according to each energy, to form a fan-shaped beam and a distributed electrode array for modulation and deceleration generates travelling-waves appropriate to each ion path depending on the energy. © 2009 IAEA, Vienna.
2009, Nuclear Fusion, 49 (7), English[Refereed]
Scientific journal
Two types of direct energy converters, cusp direct energy converter (CUSPDEC) and travelling-wave (TW) DEC, used to produce electricity from thermal ions and fusion products in an advanced fuelled fusion, are investigated using small-scale devices. In CUSPDEC, magnetized electrons are deflected along the field lines of the cusp magnetic field to the line cusp region and collected by an electron collector, while weakly magnetized ions can traverse the separatrix and enter into the point cusp region. Thus, ions are separated from electrons, and flow into an ion collector to produce dc power. Efficiencies of energy conversion of separated ions with large thermal spread of energy are measured to be ∼55%. An additional lateral electrode, together with the existing collector, constitutes a two-stage ion collector that provides distributed ion-decelerating fields. From the measured voltage-current characteristics, the efficiency of this collector is estimated to be improved to 65-70%, which is consistent with the calculation. Fusion-produced fast ions enter into TWDEC and are velocity-modulated by RF fields, bunched and then decelerated by RF travelling-wave fields on the decelerator to produce RF power. The TWDEC device has shown that the energies of ions of 3-6 keV can be decreased by 10-15% for a one-wavelength decelerator. This would give a total efficiency of 60-70% for a full-length decelerator. A novel system is being investigated for further improvement, in which the incoming ions are deflected transversely, according to each energy, to form a fan-shaped beam and a distributed electrode array for modulation and deceleration generates travelling-waves appropriate to each ion path depending on the energy. © 2009 IAEA, Vienna.
2009, Nuclear Fusion, 49 (7), English[Refereed]
Scientific journal
The objective of the present paper is to analyze small-scale experimental facilities of TWDEC (Travelling Wave type Direct Energy Converter) and to propose a modification in regard to a measuring device of the facilities by means of numerical simulation with the axisymmetrical two-dimensional approximation (a PIC method). The numerical simulation has given the following results: (1) tendency of the numerical results agree with the experimental results on the measured deceleration efficiency, (2) the deceleration efficiency measured in the experiment will increase if the radius of Faraday cup installed in the experiment increases and (3) the wave of condensation and rarefaction of measured electric charge density, which is averaged in the r-direction below the radius of Faraday cup, is not formed enough with a small radius of Faraday cup because of the r component of electric field which is induced by the electrode geometry. (C) 2008 Elsevier Ltd. All rights reserved.
PERGAMON-ELSEVIER SCIENCE LTD, Oct. 2008, ENERGY CONVERSION AND MANAGEMENT, 49 (10), 2522 - 2529, English[Refereed]
Scientific journal
- Oct. 2008, Annual Report of National Institute for Fusion Science April2007-March2008, p. 498, EnglishLow Frequency Fluctuation Analysis Using Azimuthally Aligned Probes in GAMMA 10 Tandem Mirror
Scientific journal
- Oct. 2008, Annual Report of National Institute for Fusion Science April2007-March2008, p. 492, EnglishDesign of Bias-type TWDEC for an Application of End-loss Flux of GAMMA 10 Tandem Mirror
Scientific journal
- Aug. 2008, Fusion Engineering and Design, Vol. 83, pp. 1696-1699, EnglishDeceleration in a Traveling Wave Direct Energy Converter for Advanced Fusion
[Refereed]
Scientific journal
- Jun. 2008, Surface & Coatings Technology, Vol. 202, Is. 22-23, pp. 5306-, EnglishWave Analysis in Microwave-excited Plasma Reactor Using MSP Antenna
[Refereed]
Scientific journal
- Feb. 2008, Journal of Plasma and Fusion Research, Vol. 84, No. 2, pp. 117-120, JapaneseStudies of Scaling Law on Direct Energy Conversion for Advanced Fusion
[Refereed]
Scientific journal
- Feb. 2008, Nuclear Fusion, Vol.48, 035015, EnglishExperiment on direct energy conversion from tandem mirror plasmas by using a slanted cusp magnetic field
[Refereed]
Scientific journal
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The Institute of Electrical Engineers of Japan, 01 Dec. 2007, 電気学会誌 = The journal of the Institute of Electrical Engineers of Japan, 127 (12), 811 - 811, Japanese- Nov. 2007, Proceedings of 2007 Japan-Korea Joint Symposium on Electrical Discharge and High Voltage Engineering, pp. 43-46, EnglishImprovement of an applicator for hyperthermia in long wavelength microwave using small loop antennas
International conference proceedings
- Nov. 2007, Proceedings of 2007 Japan-Korea Joint Symposium on Electrical Discharge and High Voltage Engineering, pp. 323-326, EnglishExperiments and numerical analyses of deceleration process on a traveling wave direct energy converter simulator
International conference proceedings
- Nov. 2007, Proceedings of 2007 Japan-Korea Joint Symposium on Electrical Discharge and High Voltage Engineering, pp. 327-330, EnglishAnalyses of the effect of bias electric field in an experimental device of cusp type direct energy converter
International conference proceedings
- Oct. 2007, Annual Report of National Institute for Fusion Science April2006-March2007, 485, EnglishSimultaneous Measurement of Fluctuation Correlation for both Azimuthal and Axial Directions in the GAMMA 10 Tandem Mirror
Scientific journal
- Oct. 2007, Annual Report of National Institute for Fusion Science April2006-March2007, 486, EnglishParticle Separation of End Flux of GAMMA 10 Tandem Mirror Using a Slanted Type CUSPDEC
Scientific journal
- Oct. 2007, Annual Report of National Institute for Fusion Science April2006-March2007, 488, EnglishCharacteristics of Energy Conversion in CUSPDEC Applied to the GAMMA 10 Tandem Mirror
Scientific journal
- Research on characteristics of particle discrimination and direct energy conversion for cusp direct energy converter
In a D-He-3 fusion reactor, direct energy conversion is expected, and discrimination of charged particles from each other is needed to produce electric power. The authors have performed simulation experiments for discrimination and direct energy conversion in a CUSPDEC device with a slanted cusp magnetic field. This paper presents a scaling of particle discrimination with proposition of an appropriate scaling factor based on the consideration of the Stormer potential. Experimental results with the factor up to 0.7 for ions and 80 for electrons are presented The paper also presents results of direct energy conversion of ions in higher energy region up to 5 keV. It is confirmed that the conversion efficiency does not depend on averaged energy, but depends on the broadness of energy distribution function.
AMER NUCLEAR SOCIETY, Feb. 2007, FUSION SCIENCE AND TECHNOLOGY, 51 (2T), 391 - 393, English[Refereed]
Scientific journal
- Optimization of decelerator structure of traveling wave direct energy converter simulator for D-He-3 fusion
In D-He-3 fusion, most of fusion energy is carried by created protons of 14.7 MeV. Concept of traveling wave direct energy converter (TWDEC) is applied for the purpose to construct an energy converter with less handling voltage and higher efficiency. To improve conversion efficiency of the TWDEC, we propose two methods of optimization of decelerator structure in the view point of matching between the beam velocity and the phase velocity of the traveling wave. As the result of experiments in a TWDEC simulator based on each method, these optimizations are really effective to improve conversion efficiency. However, when the matching is disturbed by some factors, less matching results in less efficiency.
AMER NUCLEAR SOCIETY, Feb. 2007, FUSION SCIENCE AND TECHNOLOGY, 51 (2T), 388 - 390, English[Refereed]
Scientific journal
- Numerical study of charge separation of cusp DEC installed at GAMMA 10
The objective of the present study is to analyze separation capability of charged particles of small-scale cusp type direct energy experimental converter installed at GAMMA 10 by means of numerical simulation with the axisymmetrical two-dimensional approximation. The numerical simulation has given the following results: (1) when the input power of protons is less than or equal to I W, the protons and the electrons can be separated with the proton collection efficiency of 100%. When the input power of protons is 5W, the protons and the electrons become difficult to be separated with the proton collection efficiency of about 5%. (2) The electrons whose radius of incidence is small become trapped in the separation zone. These results depend on the magnitude of self-induced electric field which is formed by separation of the protons and the electrons.
AMER NUCLEAR SOCIETY, Feb. 2007, FUSION SCIENCE AND TECHNOLOGY, 51 (2T), 385 - 387, English[Refereed]
Scientific journal
- Numerical analysis of the second harmonic resonance ion heating in the HIEI tandem mirror
Recently a magnetic divertor was introduced in the HIEI tandem mirror as an effective stabilization method, and the second harmonic resonance ion heating was examined. The purpose of the paper is to clarify the physical mechanism of the ion heating. RF field with large wave number was confirmed in the divertor configuration which could not be found out in the non-divertor configuration. Power absorption in the vicinity of the second harmonic resonance regions was also confirmed.
AMER NUCLEAR SOCIETY, Feb. 2007, FUSION SCIENCE AND TECHNOLOGY, 51 (2T), 319 - 321, English[Refereed]
Scientific journal
- Fast and efficient data acquisition system for ubiquitous participation in DEC experiment on GAMMA 10
This paper deals with the experimental result that is obtained from the GAMMA 10 and Kobe Cusp direct energy conversion (DEC) experiment system in the Tsukuba-Kobe university internet connected remote participation system. A DSO (Digital Sampling Oscilloscope), a PCMCIA based AID converter and a PC (Personal Computer) server as the controller and the data storage server are used as a simulation experiment Of Data Acquisition(DAQ) system. The communication between the Kobe University and the University of Tsukuba did the information transmission between the monitor site of Kobe and the experimental system operator site of Tsukuba, by using the communication of the browser base. The experimental result in the latest shot can be reflected to the parameter change for next shot. The parameter setting and control of DSO etc. becomes possible, without controlling through the operator of the University of Tsukuba by using the common gateway interface (CGI) based program.
AMER NUCLEAR SOCIETY, Feb. 2007, FUSION SCIENCE AND TECHNOLOGY, 51 (2T), 394 - 396, English[Refereed]
Scientific journal
- Effects of non-axisymmetric magnetic field on characteristics of axisymmetric cusp DEC
The effects of non-axisymmetric magnetic field on characteristics of a direct energy converter (DEC) with an axisymmetric cusp configuration are studied. The axisymmetric Cusp DEC (Kobe Cusp) is installed at the end of the GAMAM 10 device, which breaks the axisymmetry of the DEC. It is clarified that the non-axisymmetric magnetic field changes the Stormer potential at the stagnation and the equilibrium electric field by the order of the perturbation field to the equilibrium magnetic field.
AMER NUCLEAR SOCIETY, Feb. 2007, FUSION SCIENCE AND TECHNOLOGY, 51 (2T), 177 - 179, English[Refereed]
Scientific journal
- Direct-energy conversion experiment on the GAMMA 10 tandem mirror
A direct energy converter (DEC) designed for thermal ions escaping from a fusion reactor consists of a cusp magnetic field and one or two stage decelerating electrodes. The electrons are deflected along the field lines and consequently separated from thermal ions that are not fully magnetized The ions are led to the electrodes to produce DC power For basic investigation of this type of DEC, the CUSPDEC, a small-scale experimental device is constructed and its characteristics have been investigated by using a low-energy plasma source. In this paper the device is applied to the GAMMA 10 tandem mirror in order to investigate the capability of separation of charged particles as well as to demonstrate energy conversion from ions in much more reactor-relevant environment. The separation of electrons and ions with energies of the order of keV is achieved by using a slanted cusp magnetic field for the first time. It is also found that the separated ions are decelerated by the electric field in front of ion collectors and flow into the collectors at a high potential to produce DC power.
AMER NUCLEAR SOCIETY, Feb. 2007, FUSION SCIENCE AND TECHNOLOGY, 51 (2T), 171 - 176, English[Refereed]
Scientific journal
- The Japan Institute of Power Electronics, 2007, パワーエレクトロニクス学会誌, 33, 212 - 212, Japanese
- Jan. 2007, Proceedings of the 24th Symposium on Plasma Processing, P2-44, EnglishSimulation of Plasma Generation Using a Slotted Waveguide
International conference proceedings
For the treatment of cancer using hyperthermia, high frequency electromagnetic fields are used to heat the cancer cells. These electromagnetic fields fall into two general frequency ranges, one relatively low, and the other in the microwave range. Both produce some side effects such as the heating of healthy cells or the impact on the body of invasive surgery required to expose deep-lying cells. To reduce these side reactions, the use of lower microwave frequencies with phase control was proposed. In this paper, we present a very basic study to prove the viability of the proposed scheme. This includes the selection of a suitable frequency, demonstration of localized heating using the selected frequency, and a three-dimensional numerical analysis of the electromagnetic fields involved. In the heating demonstration, a tissue-equivalent phantom made from agar was irradiated by phase-controlled electromagnetic waves from a pair of circular patch antennas operating at 430 MHz. This produced localized heating. The numerical analysis produced a field distribution that corresponded closely to the results from the heating experiment. It confirmed that the phase control technique for long-wavelength microwaves was effective in producing localized heating.
Institute of Electrical Engineers of Japan, 2007, IEEJ Transactions on Electronics, Information and Systems, 127 (11), 3 - 1838, English[Refereed]
Scientific journal
- Experiment on behavior of charged particles in cusp direct energy converter for D-He-3 fusion
It is necessary to separate, discriminate and guide electrons, thermal ions, and fusion protons created from a D-He-3 reactor in order to convert kinetic to electric power directly. A cusp direct energy converter (CUSPDEC) is expected to achieve the above-mentioned role. This paper presents simulation experiments of CUSPDEC. The separation of ions and electrons is done and the kinetic energy of ions separated from electrons is converted to electricity.
KOREAN PHYSICAL SOC, Dec. 2006, JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 49, S146 - S150, English[Refereed]
Scientific journal
- Deceleration experiment on a simulator of traveling wave direct energy converter for D-He-3 fusion reactor
In D-He-3 nuclear fusion, a traveling wave direct energy converter (TWDEC) is expected to recover the energy of produced protons. The paper presents results of a simulation experiment of the TWDEC. A Dew circuit, which provides complete matching between the beam velocity and phase velocity of a traveling wave, was designed and constructed. The deceleration efficiency qualitatively varied similarly to numerical calculations. The quantitative discrepancy is considered to be due to insufficient modulation by the experimental structure.
KOREAN PHYSICAL SOC, Dec. 2006, JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 49, S141 - S145, English[Refereed]
Scientific journal
- The Japan Society of Plasma Science and Nuclear Fusion Research, Nov. 2006, プラズマ・核融合学会年会予稿集, 0 (23), 215 - 215, Japanese30pB05 Cusp-type Direct Energy Conversion in a Tandem Mirror
Scientific journal
- The Japan Society of Plasma Science and Nuclear Fusion Research, Nov. 2006, プラズマ・核融合学会年会予稿集, 0 (23), 138 - 138, Japanese29aB09P Application of Direct Energy Converter to the GAMMA 10 Device
Scientific journal
- Nov. 2006, Annual Report of National Institute for Fusion Science April2005-March2006, p. 212, EnglishOptimization of Phase Velocity of Traveling Wave in a TWDEC Simulator
Scientific journal
- Nov. 2006, Annual Report of National Institute for Fusion Science April2005-March2006, p. 494, EnglishInitial Results of CUSPDEC Applied to the GAMMA 10 Tandem Mirror
Scientific journal
- Nov. 2006, Annual Report of National Institute for Fusion Science April2005-March2006, p. 213, EnglishFast Power Control Capability of Large-Scale Traveling Wave Direct Energy Conversion
Scientific journal
- Nov. 2006, Annual Report of National Institute for Fusion Science April2005-March2006, p. 211, EnglishExperiment on Charge Separation and Direct Energy Conversion Using a Slanted CUSP Field
Scientific journal
- Nov. 2006, Annual Report of National Institute for Fusion Science April2005-March2006, p. 214, EnglishEffects of Non-Axisymmetric Magnetic Field on Characteristics of Non-Neutral Plasma
Scientific journal
- Nov. 2006, Annual Report of National Institute for Fusion Science April2005-March2006, p. 495, EnglishEffects of Non-Axisymmetric Magnetic Field on Characteristics of Axisymmetric Cusp DEC
Scientific journal
- Nov. 2006, Annual Report of National Institute for Fusion Science April2005-March2006, p. 491, EnglishCross Correlation Measurement between Density and Potential Fluctuations in a Tandem Mirror for the Purpose of Radial Transport Control
Scientific journal
- Oct. 2006, 電気学会研究会資料. FTE, 新エネルギー・環境研究会, 2006 (6), 103 - 108, JapaneseNumerical Analyses of Electric Charge Separation Capability of Experimental Cusp DEC Installed at GAMMA 10
Scientific journal
The spatial structure of waves and plasma uniformity in microwave discharges using a multi-slotted planar antenna are investigated, experimentally and by calculation. The wave field amplitude and phase are measured in the axial and azimuthal directions, and are compared with three-dimensional finite-difference time-domain calculation result. The wave mode in the plasma does not change with various densities, and, as a consequence, spatially uniform plasmas are obtained for a wide range of parameters being free from abrupt changes associated with surface wave eigenmodes.
INST PURE APPLIED PHYSICS, Oct. 2006, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 45 (10B), 8059 - 8064, English[Refereed]
Scientific journal
- Oct. 2006, Proceedings of the 13th Asian Conference on Electrical Discharge, P-2-3(CD-ROM), EnglishExperiment and Modelling of Large-Diameter Microwave Discharges with Material Gases of Nitrogen and Fluorocarbon
International conference proceedings
- Experimental and simulation studies of gas phase reaction in planar microwave plasma
It is necessary to supply nitrogen radical fluxes in high uniformity to form high-quality nitrogen-incorporated films. An experiment on gas phase chemical reaction using a microwave discharge device with a multi-slotted planar antenna is performed. We use a three-dimensional simulation code, which calculates wave propagation in plasma obtained by the finite difference time domain method, power deposition, and plasma transport using a fluid model. The code can reproduce experimental results to a large extent. The code is capable of calculating several types of gas-phase reaction of neutral species. The results of both the experiment and the simulation show that the uniformity of the density distribution of nitrogen radicals strongly depends on the uniformity of the plasma.
INST PURE APPLIED PHYSICS, Oct. 2006, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 45 (10B), 8065 - 8070, English[Refereed]
Scientific journal
- Aug. 2006, Proceedings of the 7th China-Japan Joint Conference on Composites, pp. 123-131, EnglishDevelopment of Life-Controllable-Smart (LCS) Concrete Using Recycled PET Resin Blocks
International conference proceedings
Planar microwave discharges using slot antennas have been investigated as a large-diameter and uniform plasma source for material processing. A plasma with a high uniformity, a large diameter, and high density was obtained by using a multi-slotted planar antenna without forming standing wave of surface waves. A three dimensional calculation of wave propagation in the plasma was also performed with finite-difference time-domain scheme, and shows the close relation with experiment results. (c) 2005 Published by Elsevier B.V.
ELSEVIER SCIENCE SA, May 2006, THIN SOLID FILMS, 506, 626 - 630, English[Refereed]
Scientific journal
A planar microwave discharge device has been developed, where microwave power is radiated uniformly from an antenna of multiple slots, and overdense argon plasmas with uniformities better than 3 % for 30 cm diameter has been obtained [Y. Yasaka, D. Nozaki, K. Koga, M. Ando, T. Yamamoto, N. Goto, N. Ishii, T. Morimoto, Plasma Sources Sci. Technol. 8 (1999) 530.]. In order to apply this device to material processing, an operation mixing nitrogen gas was preformed and density of nitrogen radical was measured by using a mass spectroscopy. The result was that the density of nitrogen radical had better uniformity when the base argon plasma is uniform. Numerical simulation including gas phase reactions also gave better uniformity of nitrogen radical on uniform base plasma. (c) 2005 Published by Elsevier B.V.
ELSEVIER SCIENCE SA, May 2006, THIN SOLID FILMS, 506, 622 - 625, English[Refereed]
Scientific journal
Numerical analyses with the one-dimensional approximation have been carried out for a small-scale experimental device of TWDEC. The following results have been obtained. Numerical results agree well with experimental results on the conversion efficiency and the energy distribution when the phase difference between voltages of the modulator and the decelerator is the same as the experiment. It has been found that the phase difference should be determined properly in order to obtain a high efficiency. The position of electrodes in the decelerator has been optimized to obtain higher efficiency. The optimization is carried out for ions to move with the travelling electric field. It has been shown that the optimization can make the efficiency more than 58% when the number of electrodes is 16 even with the present small device. (c) 2005 Elsevier B.V. All rights reserved.
ELSEVIER SCIENCE SA, Feb. 2006, FUSION ENGINEERING AND DESIGN, 81 (8-14), 1689 - 1694, English[Refereed]
Scientific journal
Orbits of charged particles, especially secondary electrons, in a magnetic field of cusp configuration were studied for the purpose of development of direct energy conversion for advanced fusion where separation of electrons and ions was significant. For analytical estimation, the Störmer potential was calculated, showing that ions could move wide region of magnetic field although electrons just aligned a magnetic field line, thus effective separation was expected. The calculated orbits were consistent with analytical estimation and experimental results. Within this restriction, secondary electrons cannot achieve ion collectors, but some disturbance such as space charge field can modify their orbit, and secondary electrons have a possibility to reach ion collectors. Orbits of secondary electrons starting at electron collector support this consideration. © 2006 IEEE.
2006, Proceedings - International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV, 2, 710 - 713, EnglishInternational conference proceedings
- Nov. 2005, Annual Report of National Institute for Fusion Science April2004-March2005, 198Suppression of Harmonic Frequencies of Induced Voltages in a Decelerator of a TWDEC Simulator
Scientific journal
- Nov. 2005, Annual Report of National Institute for Fusion Science April2004-March2005, 197Numerical Simulation of Large-Scale TWDEC and Helmholts DEC Devices
Scientific journal
- Nov. 2005, Annual Report of National Institute for Fusion Science April2004-March2005, 454Magnetic Configuration of Kobe-Cusp DEC in GAMMA 10
Scientific journal
- Nov. 2005, Annual Report of National Institute for Fusion Science April2004-March2005, 453Investigation on Applicability of a CUSPDEC to the GAMMA 10 Tandem Mirror
Scientific journal
- Nov. 2005, Annual Report of National Institute for Fusion Science April2004-March2005, 195Experiment on Direct Energy Conversion in a Small-Scale CUSPDEC Device
Scientific journal
- Nov. 2005, Annual Report of National Institute for Fusion Science April2004-March2005, 194Experiment on Charge Separation in a Small-Scale CUSPDEC Device
Scientific journal
- Nov. 2005, Annual Report of National Institute for Fusion Science April2004-March2005, 196Characteristics of Single Slanted Cusp-DEC
Scientific journal
- Nov. 2005, Annual Report of National Institute for Fusion Science April2004-March2005, 461Analysis of Edge Fluctuation with ICRF in a Tandem Mirror for the Purpose of Radial Transport Control
Scientific journal
- Nov. 2005, Annual Report of National Institute for Fusion Science April2004-March2005, 199Active Deceleration Experiments in TWDEC Simulators
Scientific journal
- Particle discrimination experiment for direct energy conversion
A direct energy conversion system designed for D-(3) He fusion reactor based on afield reversed configuration employs a venetian-blind type converter for thermal ions to produce DC power and a traveling wave type converter for fusion protons to produce RF power. It is therefore necessary to separate, discriminate, and guide the particle species. For this purpose, a cusp magnetic field is proposed, in which the electrons are deflected and guided along the field line to the line cusp, while the ions pass through the point cusp. A small-scale experimental device was used to study the basic characteristics of discrimination of electrons and ions in the cusp magnetic field Ions separated from electrons are guided to an ion collector, which is operated as a one-stage direct energy converter. The conversion efficiency was measured for cases with different values of mean and spread of ion energy. These experiments successfully demonstrate direct energy conversion from plasma beams using particle discrimination by a cusp magnetic field.
AMER NUCLEAR SOCIETY, Apr. 2005, FUSION SCIENCE AND TECHNOLOGY, 47 (3), 455 - 459, English[Refereed]
Scientific journal
- Experiments to improve power conversion parameters in a traveling wave direct energy converter simulator
An experimental study of direct power conversion for D-(3) He fusion is presented. In a small-scale simulator of direct energy converter, which is based on a principle of deceleration of 14.7MeVprotons by traveling wavefield, a new structure of an external transmission circuit in experiment is proposed for the purpose of enhancement of deceleration electrode voltages. A prototype circuit was designed and constructed, resulting improvement Of voltage amplitude in an order of magnitude. A more practical circuit, in which inductor elements were manufactured by using coaxial cables, was also constructed and tested. An excitation of the third harmonic frequency with a significant amplitude was observed. The cause of this problem is attributed to the modulated ion beam which has a third harmonic component and fact that the inductance of the element nonlinearly depends on frequency. This problem is serious for a practical scale energy converter, and a careful design of the circuit could avoid the problem.
AMER NUCLEAR SOCIETY, Apr. 2005, FUSION SCIENCE AND TECHNOLOGY, 47 (3), 450 - 454, English[Refereed]
Scientific journal
- The Physical Society of Japan (JPS), Mar. 2005, Meeting abstracts of the Physical Society of Japan, 60 (1), 263, Japanese27pXG-7 Properties of electron drift waves. in mirror confined plasmas with high ion temperatures
Scientific journal
- Oct. 2004, Annual Report of National Institute for Fusion Science, April2003-March2004,220, EnglishCharacteristics of Charge Separation in a Slanted Cusp Field for Direct Energy Conversion
Scientific journal
- 2004, Proceeding of The 2nd International Symposium on Sustainable Energy System, 147, EnglishEffective Destruction of Easy-break Concrete by Microwave Irradiation Using Heat at the Contact Point of Conducting Materials
[Invited]
International conference proceedings
- Nov. 2003, Proceedings of 2003 Japan-Korea Joint Symposium on Electrical Discharge and High Voltage Engineering., 261-264, EnglishStudies on the Effect of Focal Position on Laser Triggered Spark Gap in a Uniform Electric Field.
International conference proceedings
- Nov. 2003, Proceedings of 2003 Japan-Korea Joint Symposium on Electrical Discharge and High Voltage Engineering., 205-208, EnglishStudies on Easy-break Concrete Heating due to Microwave Strong Field Created by Conducting Marerial
International conference proceedings
- Nov. 2003, Annual Report of National Institute for Fusion Science April2002－March2003, 361, EnglishEnhansment of Deceleration Field by Redesign of a Transmission Circuit in a TWDEC Simulator.
Scientific journal
- Nov. 2003, Annual Report of National Institute for Fusion Science April2002－March2003, 360, EnglishEffect of Electron Collectors on Discrimination of Charged Particles in a Cusp Direct Energy Converter.
Scientific journal
- Aug. 2003, Proceedings of the ⅩⅢth International Symposium on High Voltage Engineering., CD-ROM,No.385, EnglishImprovement of spatial resolution on surface charge measurement by applying an artificial neural network to obtain instrument function.
International conference proceedings
- Experimental simulation on direct energy converter for D-He-3 fusion using RF traveling wave
A small-scale experiment is performed to prove and evaluate the principle of a direct energy converter for D-He-3 fusion reactor. Discrimination of charged particles by using a cusp magnetic Field and energy conversion from the ion beam simulating fusion protons by using traveling RF waves are demonstrated and are compared with calculations.
AMER INST PHYSICS, 2001, RADIO FREQUENCY POWER IN PLASMAS, 595, 530 - 533, English[Refereed]
International conference proceedings
- Basic experimental simulation of a traveling wave direct energy converter for a D-He-3 fusion reactor
We simulated a traveling wave direct energy converter for application in a D-He-3 fusion reactor. The deceleration of a simulated ion beam was studied, and the dependence of the efficiency of the decelerator on its length was examined. The effectiveness of spatial variation in the phase velocity of the traveling wave was demonstrated experimentally. Optimization of the structure of the decelerator is discussed with the aid of numerical simulations. By employing the proper decelerator structure, the efficiency per unit length of about 0.2 with the normalized decelerator length of about 2.5 is expected.
INTS PURE APPLIED PHYSICS, Sep. 2000, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 39 (9A), 5287 - 5291, English[Refereed]
Scientific journal
- Poloidal phasing effects on particle transport during ion Bernstein heating
Ion Bernstein wave (IBW) heating experiments are performed with a poloidally phased antenna. Between two kinds of poloidal phasing, no difference is found with the heating effect which is expected from the mechanism of heating presented previously. The significant differences due to the difference of poloidal phasing are found in observations of electron density variation, emission intensities of impurity lines and scrape-off layer plasma. All the results show that the poloidal phasing brings about variations of particle transport, and a ponderomotive effect of the antenna near-field might be the most probable mechanism. The phasing effect should be considered on an intense radio frequency (RF) injection by poloidally aligned antenna elements.
IOP PUBLISHING LTD, May 1999, PLASMA PHYSICS AND CONTROLLED FUSION, 41 (5), 613 - 623, English[Refereed]
Scientific journal
- HIGH-DENSITY CENTRAL CELL PLASMA PRODUCTION AND ION HEATING BY HELICON WAVE DAMPING, AND ITS MODE CONVERSION INTO A SLOW ALFVEN-WAVE
A new scheme of plasma production and ion heating in the central cell of the tandem mirror is demonstrated. Helicon mode plasma production in combination with two ion species plasma heating by mode conversion of a fast Alfven wave into a slow Alfven wave realizes ion heating of a high density plasma, and could remove the density limitation caused by the conventional scheme using slow ion cyclotron waves. The achieved value of products of electron density and average ion temperature is 9 X 10(20) eV . m(-3) for an RF power of 165 kW. Analysis of wave damping indicates that matching the radiation spectrum of the antenna with the damping spectrum results in efficient plasma production. The phased dual double-half-turn antenna is suitable for helicon wave spectrum control.
INT ATOMIC ENERGY AGENCY, Jan. 1995, NUCLEAR FUSION, 35 (1), 75 - 85, English[Refereed]
Scientific journal
- SELECTIVE ION AND ELECTRON HEATING AND POTENTIAL FORMATION USING MODE CONVERSIONS OF ICRF WAVES IN HIEI
Plasma heating and potential formation by ion cyclotron range of frequencies (ICRF) waves are investigated in the HIEI tandem mirror. It is demonstrated that ions and electrons are selectively heated by the appropriate waves that have been mode converted from the fast magnetosonic wave in a two-ion-species plasma. In the central cell, the minority ions can be heated up to 0.3 keV with the presence of the mode-converted slow ion cyclotron wave. Plug cell electrons are heated by the mode-converted electrostatic slow wave resulting in the formation of an ion confining potential. The dependence of the ion confining potential on the plug electron temperature is in qualitative agreement with values predicted by the improved modified Boltzmann relation which includes velocity space diffusion of electrons due to the ICRF wave. The axial confinement of the core plasma is improved by the ICRF produced potential.
INT ATOMIC ENERGY AGENCY, Sep. 1994, NUCLEAR FUSION, 34 (9), 1263 - 1267, English[Refereed]
Scientific journal
In this paper the observation of mode conversion of the m = -1 (right-rotating propagation) fast magnetosonic wave into the slow ion-cyclotron wave via the ion-ion hybrid resonance in a mirror magnetic field is presented. The left-circularly polarized component of the wave magnetic field strongly depends on the minority ion concentration in a helium-hydrogen plasma. The associated ion heating up to 250% of the initial value is in correlation with the enhancement of the left-circularly polarized component of the wave field, showing evidence of ion cyclotron heating due to the mode conversion. The two-dimensional calculation of the wave propagation and mode conversion is performed and compared with the experiment.
AMER INST PHYSICS, Jun. 1992, PHYSICS OF FLUIDS B-PLASMA PHYSICS, 4 (6), 1486 - 1491, English[Refereed]
Scientific journal
- EXCITATION CHARACTERISTICS OF SIDE-BAND WAVE IN A RADIO-FREQUENCY STABILIZED SIMPLE MIRROR PLASMA
A nonlinearly excited sideband wave due to a magnetohydrodynamic interchange mode is observed in a radio frequency (rf)-produced simple mirror plasma, and its excitation is discussed. The measured amplitude of the sideband wave field is compared with the theoretical value showing the agreement in order of magnitude, but the radial distribution is different. As the rf current of the production source is changed, the sideband excitation level varies and this variation is explained by the density fluctuation and the difference of the dispersion relations between pump and sideband waves. Using the difference of the dispersion relations, it would be possible to suppress the sideband excitation and to reduce its destabilizing contribution.
AMER INST PHYSICS, May 1992, PHYSICS OF FLUIDS B-PLASMA PHYSICS, 4 (5), 1255 - 1261, English[Refereed]
Scientific journal
MISC
- Lead, Feb. 2022, プラズマ・核融合学会誌, 98 (2), 91 - 95, Japanese直接エネルギー変換の模擬実験研究の現状と展望
Introduction scientific journal
- 電気学会, 27 Jan. 2017, 電気学会研究会資料. MD, 2017 (12), 57 - 62, JapaneseStudy on a Soft-Switching High Frequency Inverter in Consideration of a Plasma Engine Application
- 電気学会, 27 Jan. 2017, 電気学会研究会資料. MD, 2017 (12), 19 - 24, JapaneseAn Evaluation study of the improvement effect of output power in grid connected PV system by using the interphase power transfer system
- The Institute of Electronics, Information and Communication Engineers, 24 Feb. 2015, Proceedings of the IEICE General Conference, 2015 (1), 294 - 294, JapaneseB-4-4 Study on energy storage for energy of lightning surge flowing in a communication antenna tower
- The Institute of Electronics, Information and Communication Engineers, 04 Mar. 2014, Proceedings of the IEICE General Conference, 2014 (1), 340 - 340, JapaneseB-4-2 The countermeasure against lightning surge flowing into outer conductor of coaxial cable due to lightning strikes on an antenna tower
- Mar. 2013, 平成24年度核融合科学研究所双方向型共同研究成果報告書, 12 - 14, JapaneseGAMMA 10 における高密度／高エネルギー粒子束に対する直接エネルギー変換の基礎研究
Others
- Mar. 2010, 電子情報通信学会第28回宇宙太陽発電研究会, 第9回宇宙太陽発電と無線電力伝送に関する研究会, 1 - 5, Japanese長波長マイクロ波を用いた低侵襲ハイパーサーミアの基礎研究IV
Summary national conference
- 2010, プラズマ・核融合学会年会(Web), 27thダイバータ模擬及び直接発電実験の為のGAMMA10端損失イオン流分析
- 2009, 第24 回宇宙太陽発電時限研究専門委員会研究会, Japaneseマイクロ波を利用したRC 構造物中の鉄筋および欠陥探査方法に関する研究
Summary national conference
- Nov. 2006, Rokko Research Wind of Engineering, Vol. 3, No. 3, p. 36, Japanese長波長マイクロ波を用いた非侵襲ハイパーサーミアの基礎研究
Others
- Nov. 2006, Rokko Research Wind of Engineering, Vol. 3, No. 3, p. 37, Japaneseマイクロ波加熱を用いたコンクリート構造物の非破壊検査法
Others
- Mar. 2006, 核融合科学研究所双方向型共同研究成果報告書(平成17年度), p. 11, JapaneseRF印加によるタンデムミラープラズマの径方向輸送制御に関する研究
Others
- 日本材料学会, 2006, 学術講演会講演論文集, 55, 285 - 286, Japanese326 Research on applicability of opposite to heated surface that uses microwave heating to internal defect on concrete inside and reinforced concrete inquiry and infrared thermography
- 日本材料学会, 2006, 学術講演会講演論文集, 55, 287 - 288, Japanese327 Analysis of Microwave Propagation for Infrared Thermography Method Using Microwave Heating
- プラズマ・核融合学会, 2006, プラズマ・核融合学会年会予稿集, (23), 139 - 139, Japanese29aB11P NUMERICAL ANALYSIS OF THE SECOND HARMONIC RESONANCE ION HEATING IN THE CENTRAL CELL OF HIEI TANDEM MIRROR
- プラズマ・核融合学会, 2006, プラズマ・核融合学会年会予稿集, (23), 137 - 137, Japanese29aB08P Experimental Simulation on Particle Discrimination in a Cusp-Type Direct Energy Converter IV
- プラズマ・核融合学会, 2006, プラズマ・核融合学会年会予稿集, (23), 138 - 138, Japanese29aB10P Experiments of the Beam Deceleration on a Traveling Wave Direct Energy Converter Simulator
- Oct. 2005, 筑波大学プラズマ研究センター平成16年度年次報告, p. 96, JapaneseStudies on Improvement of Radial Confinement in Tandem Mirrors by RF Application
Others
- Oct. 2005, 筑波大学プラズマ研究センター平成16年度年次報告, p. 88, JapaneseFundamental Study on Direct Energy Conversion in GAMMA 10
Others
- Mar. 2005, 核融合科学研究所 双方向型共同研究成果報告書, (平成16年度),12, JapaneseRF/DC電場によるタンデムミラーの閉じ込め改善に関する研究
Others
- 日本材料学会, 2005, 学術講演会講演論文集, 54, 393 - 394, Japanese531 Research on a method of detecting concrete cover on reinforcing bar by means of thermography on concrete surface heated by microwave
- 日本材料学会, 2005, 学術講演会講演論文集, 54, 395 - 396, Japanese532 Study on detection of internal defect in concrete by means of thermography on concrete surface heated by microwave
- 日本材料学会, 2005, 学術講演会講演論文集, 54, 173 - 174, Japanese603 Compaction of a Carbon-fiber Antenna for Easy-break Concrete
- プラズマ・核融合学会, 2005, プラズマ・核融合学会年会予稿集, (22), 96 - 96, Japanese29aC24P The dispersion relation analysis of low-frequency fluctuations in GAMMA10
- プラズマ・核融合学会, 2005, プラズマ・核融合学会年会予稿集, (22), 105 - 105, Japanese29aC41P Simulation Experiment on Traveling Wave Direct Energy Converter X
- プラズマ・核融合学会, 2005, プラズマ・核融合学会年会予稿集, (22), 104 - 104, Japanese29aC40P Experimental Simulation on Particle Discrimination in a Cusp-Type Direct Energy Converter III
- Experimental and computational study on the Cusp-DEC and TWDEC for advanced fueled fusion
Experimental and computational results of direct energy converters (DECs) for advanced fueled fusion such as D-He-3 are presented. Kinetic energy of thermal component of end loss plasma is converted to electricity by using the Cusp DEC [1]. The proof-of-principle experiments of a single slanted cusp have been carried out and verified the faculty of the configuration. To improve a separation of electrons from ions, numerical simulation shows a Helmholtz magnetic configuration with a uniform magnetic field is more effective than the Cusp DEC. The fusion-produced high-energy ions like 15 MeV protons in D-He-3 fueled fusion can pass through the Cusp DEC without disturbing their orbits and enter a traveling-wave direct energy converter (TWDEC). Small scale experiments have shown the effectiveness of the TWDEC and the numerical simulation on optimization of interval of electrodes in a decelerator gives high conversion efficiency up to 60%.
AMER NUCLEAR SOCIETY, Jan. 2005, FUSION SCIENCE AND TECHNOLOGY, 47 (1T), 43 - 48, English[Refereed]
Others
- Jan. 2005, Rokko Research Wind of Engineering, October-December2004,1(3),22, JapaneseEfficient Destruction of Easy-break concrete by Microwave Irradeation Using Heat at the Contact Point of Conducting Materials
Others
- 日本材料学会, 2004, 学術講演会講演論文集, 53, 509 - 510, Japanese818 Easy-break Concreteにおける導電材混入効果の解析実験(コンクリート耐久性・リサイクル・変形,一般セッション,第53期学術講演会)
- プラズマ・核融合学会, 2004, プラズマ・核融合学会年会予稿集, (21), 247 - 247, Japanese26aA33P Simulation Experiment on Traveling Wave Direct Energy Converter IX
- プラズマ・核融合学会, 2004, プラズマ・核融合学会年会予稿集, (21), 247 - 247, Japanese26aA32P Experimental Simulation on Particle Discrimination in a Cusp-Type Direct Energy Converter II
- Jan. 2004, 電気学会技術報告, 949,23-28(2.2.4節分担) (949), Japanese電力分野におけるEMC課題
Introduction scientific journal
- 12 Dec. 2003, 電気学会研究会資料. ED, 放電研究会, 2003 (239), 71 - 76, JapaneseImprovement of Heating Efficiency of Easy-break Concrete due to Microwave Strong Field Formed at Sharp Edges of Conducting Material
- GSW0315 Fracture behavior of life-controllable smart concrete using the recycled PET resin
A functional concrete, named "Life-Controllable-Smart" concrete, was developed on the basis of the composite technology. The material, which is a concrete containing the PET blocks improved in microwave heatability as the aggregate, can be easily and safely on demand by irradiating 2.45 GHz microwave. The breakability, heatability, workability and strength were investigated to improve the total performance of the LCS concrete. It is evident that when thermal expansion coefficient α_r of the filler is the same, fracture property of LCS concrete would be almost wholly dependent upon bulk modulus K_r of the filler. It is clear that as resin content V_f increases, temperature at break point descends drastically and results of fracture experiment were almost the same as those of the numerical analysis. Finally, it is confirmed that the decomposing property, execution property and strength are within the allowable limits of practical utilization, and satisfactory results are obtained concerning material development
The Japan Society of Mechanical Engineers, 10 Sep. 2003, Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics, 2003 (2), "GSW0315 - 1"-"GSW0315-6", English - Mar. 2003, 財団法人実吉奨学会平成13年度研究助成金受給者研究報告集, 23-26, Japanese進行波型直接エネルギー変換器における高周波エネルギー自己励起過程の解析
Others
- 日本材料学会, 2003, 学術講演会講演論文集, 52, 175 - 176, Japanese612 Easy-break concreteのマイクロ波加熱特性の解析(成形とリサイクル)(複合材料の産業応用)(オーガナイスドセッション6)
- プラズマ・核融合学会, 2003, プラズマ・核融合学会年会予稿集, (20), 189 - 189, Japanese27pB01P Experiment on Fast Wave Ion Cyclotron Heating of DivertorStabilized Plasmas in the HIEI Tandem Mirror
- プラズマ・核融合学会, 2003, プラズマ・核融合学会年会予稿集, (20), 200 - 200, Japanese27pB23P Simulation Experiment on Traveling Wave Direct Energy Converter VIII
- プラズマ・核融合学会, 2002, プラズマ・核融合学会年会予稿集, (19), 225 - 225, Japanese29pB16P Fast Wave Ion Heating in the HIEI Tandem Mirror : I. Numerical Analysis
- プラズマ・核融合学会, 2001, プラズマ・核融合学会年会予稿集, (18), 213 - 213, Japanese30pB31P Simulation Experiment on Traveling Wave Direct Energy Converter VII
- 07 Dec. 2000, 電気学会研究会資料. ED, 放電研究会, 2000 (168), 1 - 5, JapaneseExamination of Modulation Method of a Traveling Wave Direct Energy Converter (II)
- 07 Dec. 2000, 電気学会研究会資料. ED, 放電研究会, 2000 (168), 7 - 12, JapaneseDiagnosis of Insulation Degradation of DC-GIS Using Pulsating Voltage (III)
- 電気学会, 01 Nov. 2000, The Transactions of the Institute of Electrical Engineers of Japan. C, 120 (11), 1574 - 1579, JapaneseIdentification of Power System Dynamics due to Combined Use of Mathematical Model and Neural Network
- 21 Jun. 2000, 電気学会研究会資料. ED, 放電研究会, 2000 (48), 7 - 11, JapaneseFundamental Studies for Laser Induced Discharge
- 電気学会, 01 Jun. 2000, The Transactions of the Institute of Electrical Engineers of Japan. A, 120 (6), 681 - 686, JapaneseEffects of shock wave on laser-induced discharge under non-univorm Dc electric field
- 03 Dec. 1999, 電気学会研究会資料. ED, 放電研究会, 1999 (189), 73 - 78, JapaneseDiagnosis of Insulation Degradation of DC-GIS Using Pulsating Voltage (II)
- 03 Dec. 1999, 電気学会研究会資料. ED, 放電研究会, 1999 (189), 43 - 47, JapaneseAnalysis of Laser Produced Plasma on Insulating Material
- 08 Sep. 1999, 電気学会基礎・材料・共通部門大会講演論文集 = Proceeding of Annual Conference of Fundamentals and Materials Society, IEE Japan, 1999, 316 - 316, JapaneseOptical Measurement of Laser Produced Plasma on Insulating Material
- 08 Sep. 1999, 電気学会基礎・材料・共通部門大会講演論文集 = Proceeding of Annual Conference of Fundamentals and Materials Society, IEE Japan, 1999, 310 - 315, JapaneseOptical Measurement of Laser-Produced Plasma via an Interferometer
- 12 Jun. 1999, 電気学会研究会資料. PST, プラズマ研究会, 1999 (27), 25 - 29, JapaneseFundamental experiments of direct energy conversion due to traveling wave for D-^3He fusion
- 18 Nov. 1998, 電気学会研究会資料. EP, プラズマ研究会, 1998 (114), 49 - 53, JapaneseMeasurement of laser-induced plasma using an interferometer
- 05 Dec. 1997, 電気学会研究会資料. ED, 放電研究会, 1997 (226), 55 - 60, JapaneseBasic Study for Detection of Partial Discharge in GIS Using Neural Network
- 05 Dec. 1997, 電気学会研究会資料. ED, 放電研究会, 1997 (226), 71 - 76, JapaneseAnalysis on Mechanism of Discharge Induction by Laser Produced Plasma in a Short Air Gap
- 17 Jun. 1997, 電気学会研究会資料. ED, 放電研究会, 1997 (39), 19 - 23, JapaneseAnalytical Experiments on Effect of Shock Wave to Laser Induced Discharge
- 電気学会, Nov. 1996, The Transactions of the Institute of Electrical Engineers of Japan. A, 116 (11), 959 - 963, EnglishResearch on the Degradation of Insulating Material by Feeble Discharge in SF_6 Gas due to the Quantitative Measurement of Discharge Light
- 13 Sep. 1996, 電気学会研究会資料. ED, 放電研究会, 1996 (144), 49 - 58, JapaneseAbrupt Density Evolution on RF Plasma Production
- 電気学会, 20 Oct. 1995, The Transactions of the Institute of Electrical Engineers of Japan. A, 115 (11), 1088 - 1097, JapaneseComputer Simulation of Laser-Induced Shock Wave Propagation in Gas
- 電気学会, 20 Jun. 1995, The Transactions of the Institute of Electrical Engineers of Japan. A, 115 (7), 553 - 562, JapaneseComputer Simulation of CO_2 Laser-Induced Plasma Production Processes
- Kobe University, Nov. 1993, Memoirs of the Faculty of Engineering, Kobe University, 40, 61 - 72, EnglishTemporal Evolution of CO_2 Laser Produced Plasma
- The Physical Society of Japan (JPS), 12 Sep. 1990, 秋の分科会講演予稿集, 1990 (4), 176 - 176, Japanese3a-S-8 Ion Cyclotron Heating in the WT-III Tokamak V
- INT ATOMIC ENERGY AGENCY, May 1990, NUCLEAR FUSION, 30 (5), 925 - 927, EnglishIMPROVEMENT OF ICRF ANTENNA LOADING AND POWER DEPOSITION USING POLOIDAL PHASING
Report scientific journal
- The Physical Society of Japan (JPS), 12 Sep. 1989, 秋の分科会講演予稿集, 1989 (4), 140 - 140, Japanese3a-H-7 Heating and Confinement in the HIEI Tandem Mirror
- The Physical Society of Japan (JPS), 12 Sep. 1989, 秋の分科会講演予稿集, 1989 (4), 254 - 254, Japanese6a-J-11 Ion Cyclotron Heating in the WT-III Tokamak IV
- The Physical Society of Japan (JPS), 28 Mar. 1989, 年会講演予稿集, 44 (4), 132 - 132, Japanese28p-TE-13 Experiments in the HIEI Tandem Mirror VI : plug cell plasma Heating
- The Physical Society of Japan (JPS), 28 Mar. 1989, 年会講演予稿集, 44 (4), 131 - 131, Japanese28p-TE-12 Experiments in the HIEI Tandem Mirror V : Central Cell Plasma Production, Heating, And Stabilization
- National Institute for Fusion Science, Jun. 1988, IPPJ-T : technical report, 37, 361 - 372, EnglishBASIC EXPERIMENTS ON COMPACT TANDEM MIRROR
Books etc
- Others, オーム社, Nov. 2013, Japanese, ISBN: 9784274214448OHM大学テキスト 高電圧工学
Textbook
- Others, オーム社, Oct. 2012, JapaneseOHM大学テキスト 電気回路II
Textbook
- Others, オーム社, Sep. 2012, JapaneseOHM大学テキスト 電気回路I
Textbook
- Joint work, Morikita Publishing Co., May 2008, Japanese電気エネルギー工学
Textbook
Presentations
- 先進燃料プラズマ研究会, 26 Dec. 2022, Japanese進行波型直接エネルギー変換器における効率の減速電圧依存性
Oral presentation
- プラズマ・核融合学会第39回年会, 24 Nov. 2022, JapaneseStudy on improvement of secondary electron collection by cusp magnetic field in energy recovery of fast ions using secondary electron emission II
Poster presentation
- プラズマ・核融合学会第39回年会, 24 Nov. 2022, JapaneseSimulation experiments of ion-ion separation in direct power generation for helium 3 fusion II
Poster presentation
- プラズマ・核融合学会第39回年会, 24 Nov. 2022, JapaneseMeasurement of heat quantity by bias-type calorimeter for a simulation experiment of divertor thermal load reduction II
Poster presentation
- The 31st International Toki Conference on Plasma and Fusion Research, 08 Nov. 2022, EnglishAnalysis of deterioration of particle separation performance in a cusp-type direct energy converter simulator
Poster presentation
- The 31st International Toki Conference on Plasma and Fusion Research, 08 Nov. 2022, EnglishEfficiency dependence on deceleration voltage in a simulation experiment of traveling wave direct energy converter
Poster presentation
- The 31st International Toki Conference on Plasma and Fusion Research, 08 Nov. 2022, EnglishHeat quantity measurement for a simulation experiment of divertor thermal load reduction by direct energy conversion
Poster presentation
- 第14回核融合エネルギー連合講演会, 07 Jul. 2022, JapaneseSimulation experiment of divertor thermal load reduction by cusp magnetic field using ring type permanent magnet II
Poster presentation
- 令和4年電気学会全国大会, 23 Mar. 2022, Japanese共振タンクを有する非接触給電システムの設計について
Oral presentation
- 神戸大学研究基盤センター・若手フロンティア研究会2021, 24 Dec. 2021, Japanese二次電子放出を利用した高速イオンからのエネルギー回収における カスプ磁場導入の効果
Poster presentation
- パワーエレクトロニクス学会第241回定例研究会, 18 Dec. 2021, Japanese共振タンクを用いた磁界共鳴方式非接触電力伝送システムの設計と高効率化について
Poster presentation
- 第38回プラズマ・核融合学会年会, 24 Nov. 2021, Japanese単一ヘリカルアンテナ型電気推進エンジンにおける二種イオン混成共鳴加熱の適用に関する研究
Poster presentation
- 第38回プラズマ・核融合学会年会, 22 Nov. 2021, Japaneseダイバータ熱負荷低減模擬実験のためのバイアス型カロリーメータによる熱量測定
Poster presentation
- 第38回プラズマ・核融合学会年会, 22 Nov. 2021, Japaneseリング型永久磁石のカスプ磁場によるダイバーター熱負荷低減模擬実験
Poster presentation
- 第38回プラズマ・核融合学会年会, 22 Nov. 2021, Japanese二次電子放出を利用した高速イオンからのエネルギー回収におけるカスプ磁場による二次電子捕集量向上に関する研究
Poster presentation
- 第38回プラズマ・核融合学会年会, 22 Nov. 2021, Japaneseヘリウム3燃料核融合直接発電におけるイオン-イオン分離の模擬実験
Poster presentation
- The 30th International Toki Conference on Plasma and Fusion Research, 19 Nov. 2021, EnglishInitial results of ion-ion separation experiment for advanced fusion in a unified direct energy conversion simulator
Oral presentation
- 「先進燃料核融合研究の現状と今後の検討課題」研究会, 24 Sep. 2021, Japanese直接エネルギー変換の模擬実験研究の現状と展望
Oral presentation
- パワーエレクトロニクス学会第239回定例研究会, 04 Sep. 2021, Japanese非接触給電システム高効率化のための共振タンク回路パラメータが効率に与える影響
Oral presentation
- 日本物理学会第76回年次大会, 13 Mar. 2021, Japaneseダイバーター熱流束センサーの時間遅れのモデル化と補正の試み
Oral presentation
- 電気学会半導体電力変換/モータドライブ合同研究会, 22 Jan. 2021, Japanese共振タンクを有する非接触給電システムにおける電力伝送効率の改善効果
- パワーエレクトロニクス学会第236回定例研究会, 19 Dec. 2020, Japanese太陽光発電システム多数連係系統における相間電力制御コンバータによるエネルギー利用効率改善効果についての研究
- パワーエレクトロニクス学会第236回定例研究会, 19 Dec. 2020, Japanese非接触給電システムにおける高周波インバータのスイッチング方式が電力伝送効率に与える影響に関する研究
- 第37回プラズマ・核融合学会年会, 01 Dec. 2020, Japanese統合型模擬実験装置における直接エネルギー変換の研究
Poster presentation
- The 29th International Toki Conference on Plasma and Fusion Research, 29 Oct. 2020, EnglishExperiment using intensity-improved flux for divertor thermal load reduction by direct energy conversion
Poster presentation
- The 29th International Toki Conference on Plasma and Fusion Research, 28 Oct. 2020, EnglishStudy on high power helicon wave plasma generation by a variable pitch helical antenna for a thruster
Poster presentation
- The 29th International Toki Conference on Plasma and Fusion Research, 27 Oct. 2020, EnglishEvaluation of electron inflow to anteroposterior electrodes in a secondary electron direct energy converter simulator
Poster presentation
- 令和2年電気学会全国大会, 11 Mar. 2020, Japanese共振タンク直列接続構成の送受電コイルを用いた非接触給電システム
Oral presentation
- パワーエレクトロニクス学会第231回定例研究会, 21 Dec. 2019, Japanese送受電コイルに設けた共振タンク回路が非接触給電システムの電力伝送効率に与える影響について
Poster presentation
- 神戸大学研究基盤センター若手フロンティア研究会2019, 19 Dec. 2019, Japanese二次電子放出を利用したエネルギー変換器における電子捕集量の対磁場電極角度依存性
Poster presentation
- 第36回プラズマ・核融合学会年会, 02 Dec. 2019, Japanese窒素と希ガスの混合状態におけるASDEXゲージを用いたガス圧力評価
Poster presentation
- 令和元年電気関係学会関西連合大会, 30 Nov. 2019, Japanese核融合発電模擬実験用複合プラズマ源の軸方向磁場分布に対する高速イオン源の動作特性に関する研究
Oral presentation
- 令和元年電気関係学会関西連合大会, 30 Nov. 2019, Japanese電気推進用プラズマ源における単一ヘリカルアンテナを用いた磁場勾配に対するプラズマ生成の変化
Oral presentation
- 令和元年電気関係学会関西連合大会, 30 Nov. 2019, Japaneseカスプ磁場型荷電粒子分離装置用プラズマ源のガス種に対する動作依存性
Oral presentation
- 令和元年電気関係学会関西連合大会, 30 Nov. 2019, Japaneseカスプ型直接エネルギー変換器の荷電粒子分離領域における静電プローブを用いた電荷分離の評価方法の研究
Oral presentation
- 令和元年電気関係学会関西連合大会, 30 Nov. 2019, Japanese二次電子放出型高速イオンエネルギー回収における電子捕集量の対磁場電極角度依存性
Oral presentation
- The 28th International Toki Conference on Plasma and Fusion Research, 06 Nov. 2019, JapaneseEvaluation of the Gas Pressure in Divertor Simulation Experiments Seeded with Nitrogen-Hydrogen Mixed Radiator
Poster presentation
- The 28th International Toki Conference on Plasma and Fusion Research, 05 Nov. 2019, JapaneseSimulation experiment of thermal load reduction by direct energy conversion using an ion beam injector
Poster presentation
- The 28th International Toki Conference on Plasma and Fusion Research, 05 Nov. 2019, JapanesePlasma generation study on dependence of magnetic fields ratio between upstream and downstream for a single helical antenna thruster
Poster presentation
- The 28th International Toki Conference on Plasma and Fusion Research, 05 Nov. 2019, JapaneseImprovement of electron collection using a magnetic field with low mirror ratio in a secondary electron direct energy converter simulator
Poster presentation
- The 28th International Toki Conference on Plasma and Fusion Research, 05 Nov. 2019, JapaneseHigh density plasma generation in a thruster using a helical antenna with variable axial length
Poster presentation
- The 28th International Toki Conference on Plasma and Fusion Research, 05 Nov. 2019, JapaneseExperimental studies on ion-ion separation and their collection for direct energy conversion
Poster presentation
- パワーエレクトロニクス学会第230回定例研究会, 26 Oct. 2019, Japanese非接触給電システムに適用する共振タンクを有する送受電コイルの構成と電力伝送特性の検討
Oral presentation
- パワーエレクトロニクス学会第226回定例研究会, Dec. 2018, Japanese, 神戸, Domestic conference非接触給電における磁界共鳴型アンテナの回路パラメータと送電効率への影響
Poster presentation
- The 35th annual meeting of The Japan Society of Plasma Science and Nuclear Fusion Research, Dec. 2018, Japanese, 吹田, Domestic conferenceEffect of low mirror ratio magnetic field in fast ion energy recovery method using secondary electron emission
Poster presentation
- 神戸大学研究基盤センター若手フロンティア研究会2018, Dec. 2018, Japanese, 神戸, Domestic conference二次電子放出を利用した高速イオンのエネルギー回収における低ミラー比磁場の効果
Poster presentation
- The 35th annual meeting of The Japan Society of Plasma Science and Nuclear Fusion Research, Dec. 2018, Japanese, 吹田, Domestic conferenceStudy of ion beam extraction and transport in the composite-plasma source for researches of direct energy converter
Poster presentation
- The 35th annual meeting of The Japan Society of Plasma Science and Nuclear Fusion Research, Dec. 2018, Japanese, 吹田, Domestic conferenceDependence of Antenna Position in a Simulation Experiment of Plasma Thruster Using a Single Helical Antenna
Poster presentation
- The 35th annual meeting of The Japan Society of Plasma Science and Nuclear Fusion Research, Dec. 2018, Japanese, 吹田, Domestic conferenceStudies on transport of ion beam in simulator of traveling wave direct energy converter
Poster presentation
- The 35th annual meeting of The Japan Society of Plasma Science and Nuclear Fusion Research, Dec. 2018, Japanese, 吹田, Domestic conferenceStudies on Plasma Generation and RF Field Distribution Measurement on Variable Length Single Helical Antenna Type Plasma Thruster
Poster presentation
- パワーエレクトロニクス学会第226回定例研究会, Dec. 2018, Japanese, 神戸, Domestic conferencePWM電力変換システムのパッシブ素子で構成されたソフトスイッチング回路の動作特性
Poster presentation
- The 27th International Toki Conference on Plasma and Fusion Research \& The 13th Asia Pacific Plasma Theory Conference, Nov. 2018, English, Toki, International conferenceStudy on the Sensitivity of Fast Ionization Gauge in Mixture Gas of Hydrogen and Helium
Poster presentation
- The 27th International Toki Conference on Plasma and Fusion Research \& The 13th Asia Pacific Plasma Theory Conference, Nov. 2018, English, Toki, International conferenceImprovement of ion-ion separation and collection by modification of electrode structure in a cusp type direct energy converter
Poster presentation
- The 27th International Toki Conference on Plasma and Fusion Research \& The 13th Asia Pacific Plasma Theory Conference, Nov. 2018, English, Toki, International conferenceImprovement of evaluation of heat quantity in a simulation experiment of divertor thermal load reduction by using a charge separation device
Poster presentation
- The 27th International Toki Conference on Plasma and Fusion Research \& The 13th Asia Pacific Plasma Theory Conference, Nov. 2018, English, Toki, International conferenceExperimental analysis on variation of the amount of particles passing through traveling wave direct energy converter
Poster presentation
- The 27th International Toki Conference on Plasma and Fusion Research \& The 13th Asia Pacific Plasma Theory Conference, Nov. 2018, English, Toki, International conferenceEffect of axial gradient of magnetic field in a plasma source of a thruster simulator using a single helical antenna
Poster presentation
- パワーエレクトロニクス学会第224回定例研究会, Aug. 2018, Japanese, 名古屋, Domestic conference非接触給電に向けた給電‐受電コイルに適用する共振回路系の検討
Oral presentation
- 12th International Conference on Open Magnetic Systems for Plasma Confinement, Aug. 2018, English, Tsukuba, International conferenceWorking characteristics of a combined plasma source for ion-ion separation experiments in direct energy conversion
Poster presentation
- 12th International Conference on Open Magnetic Systems for Plasma Confinement, Aug. 2018, English, Tsukuba, International conferenceStudies on plasma generation in a thruster using a single helical antenna with variable axial length
Poster presentation
- 12th International Conference on Open Magnetic Systems for Plasma Confinement, Aug. 2018, English, Tsukuba, International conferenceRecent advancement of research on plasma direct energy conversion
Keynote oral presentation
- 12th International Conference on Open Magnetic Systems for Plasma Confinement, Aug. 2018, English, Tsukuba, International conferenceImprovement of electron collection using a magnetic field suppressing mirror effect in a secondary electron direct energy converter simulator
Poster presentation
- 12th International Conference on Open Magnetic Systems for Plasma Confinement, Aug. 2018, English, Tsukuba, International conferenceExamination of bunching effect of dual-frequency modulation in a traveling wave direct energy converter simulator
Poster presentation
- 12th International Conference on Open Magnetic Systems for Plasma Confinement, Aug. 2018, English, Tsukuba, International conferenceAnalytical experiment of time evolution of deceleration effect in traveling wave direct energy converter using dual-frequency modulation
Poster presentation
- 12th International Conference on Open Magnetic Systems for Plasma Confinement, Aug. 2018, English, Tsukuba, International conferenceAnalysis on the sensitivity of the ASDEX type fast ionization gauge in mixed radiator gases of divertor simulators
Oral presentation
- The joint meeting of the 26th International Toki Conference and The 11th Asia Plasma and Fusion Association Conference, Dec. 2017, English, 土岐市, International conferenceSensitivity calibrations of ASDEX type fast ionization gauges in mixed gas environment of hydrogen and noble gases
Poster presentation
- The joint meeting of the 26th International Toki Conference and The 11th Asia Plasma and Fusion Association Conference, Dec. 2017, English, 土岐市, International conferenceMeasurement of Heat Quantity in a Small Cusp-type Direct Energy Converter for Divertor Thermal Load Reduction
Poster presentation
- The joint meeting of the 26th International Toki Conference and The 11th Asia Plasma and Fusion Association Conference, Dec. 2017, English, 土岐市, International conferenceA study of dual-frequency modulation through multiple field regions in a traveling wave direct energy converter simulator
Poster presentation
- The joint meeting of the 26th International Toki Conference and The 11th Asia Plasma and Fusion Association Conference, Dec. 2017, English, 土岐市, International conferenceA Preliminary Study of Ion-Ion Separation in Cusp-type Direct Energy Converter
Poster presentation
- Plasma Conference 2017, Nov. 2017, Japanese, 姫路市, Domestic conferenceRadial Dependence of Ion Energy Distribution in a Simulation Experiment of Plasma Thruster Using a Single Helical Antenna
Poster presentation
- Plasma Conference 2017, Nov. 2017, Japanese, 姫路市, Domestic conferenceStudies on Plasma Production Control by the Length of a Single Helical Antenna for a Simple Electric Thruster
Poster presentation
- 平成29年電気関係学会関西連合大会, Nov. 2017, Japanese, 東大阪市, Domestic conference単一ヘリカルアンテナ型電気推進エンジンにおける生成プラズマの径方向分布に関する研究
Oral presentation
- Plasma Conference 2017, Nov. 2017, Japanese, 姫路市, Domestic conferenceMeasurement of a Gas Pressure in a Mixed Gas Environment of Hydrogen and Noble Gas by Using ASDEX Type Fast Ionization Gauge
Poster presentation
- Plasma Conference 2017, Nov. 2017, Japanese, 姫路市, Domestic conferenceStudies on Scattering due to Field of Bunched Ions in a Traveling Wave Direct Energy Converter Simulator
Poster presentation
- Plasma Conference 2017, Nov. 2017, Japanese, 姫路市, Domestic conferenceStudies on Deceleration Effect to Dual-Frequency Modulated Particle Beam in Traveling Wave Direct Energy Converter
Poster presentation
- Plasma Conference 2017, Nov. 2017, Japanese, 姫路市, Domestic conferenceStudies on Frequency Dependence of an Effect by Radio Frequency Field for Particle Separation in Cusp Type Direct Energy Converter
Poster presentation
- 平成29年電気関係学会関西連合大会, Nov. 2017, Japanese, 東大阪市, Domestic conferenceカスプ型直接エネルギー変換器でのイオン-イオン分離の模擬実験研究
Poster presentation
- Plasma Conference 2017, Nov. 2017, Japanese, 姫路市, Domestic conferenceD-moduleにおける各種放射冷却ガスを用いたASDEXゲージの較正実験
Poster presentation
- the 13th International Symposium on Fusion Nuclear Technology, Sep. 2017, English, 京都市, International conferenceDevelopment of Calorimeter System for a Conceptual Study of CuspDEC Divertor
Poster presentation
- the 13th International Symposium on Fusion Nuclear Technology, Sep. 2017, English, 京都市, International conferenceAnalytical Experiments on Scattering of High Energy Ions in a Secondary Electron Direct Energy Converter Simulator
Poster presentation
- （社）電気学会半導体電力変換・モータドライブ合同研究会, Jan. 2017, Japanese, 近年，住宅地域において，太陽光発電システム（以下， PV）の導入が進んでいる．PV 多数連系系統において，逆潮流による低圧需要家の受電電圧の上昇，および PV 連系家庭からみて上位系統である高圧配電系統の電力不平衡が問題となる． PV の逆潮流電力による連系点電圧の上昇は， PV出力を抑制することから発電機会を損じ，連系場所によって経済的不公平が生じる問題が指摘されている．さらに連系点電圧上昇対策として， PV が進相無効電力を出力する制御や， SVC（静止型無効電力補償装置）の低圧系統への適用が検討され，高圧配電系統における電力不平衡の対策としても SVC による無効電力制御が検討されている．しかし，無効電力の増加は上位系統の配電損失が増加し安定性にも悪影響を与えるといった懸念もある．本稿では，上位系統における無効電力成分の増加を抑制しつつ， PV, Domestic conferenceAn Evaluation study of the improvement effect of output power in grid connected PV system by using the interphase power transfer system
Oral presentation
- （社）電気学会半導体電力変換・モータドライブ合同研究会, Jan. 2017, Japanese, ダイキン工業 テクニカル・イノベーションセンター, 近年では宇宙ミッションの長距離長時間化に伴い電気推進エンジンの開発が進められている．電気推進エンジンは燃料を使用し推進する従来の化学推進エンジンに比べて推進力において劣るため打ち上げなどには不向きであるが比推力において勝るため推進剤の消費量を大幅に抑えることができる．長距離・長期運用のための小型軽量化を考えた場合は従来二つ搭載されたプラズマ機構を一つにすることが求められる．そこで研究されているプラズマ生成用アンテナが回転電磁界型アンテナである．回転電磁界型アンテナに適用可能な高周波インバータとして二出力位相可変高周波インバータが開発されてきた．このインバータは一つの電源を二つのハーフブリッジインバータで共有した構造となっており二つのアンテナに電源を供給することが可能となっている．この回路は 1.9MHz の高周波動作するためスイッチング損失が無視でき, Domestic conferenceStudy on a Soft-Switching High Frequency Inverter in Consideration of a Plasma Engine Application
Oral presentation
- 平成28年電気関係学会関西連合大会, Nov. 2016, Japanese, 堺市, Domestic conference二次電子放出を利用した高速イオンからのエネルギー回収法における電極間滞留電子の測定
Poster presentation
- 平成28年電気関係学会関西連合大会, Nov. 2016, Japanese, 堺市, Domestic conference二次電子放出を利用した高速イオンからのエネルギー回収装置における捕集電極構造の改良
Oral presentation
- プラズマ・核融合学会第33回年会, Nov. 2016, Japanese, 仙台市, Domestic conferenceDevelopment of a Combined Plasma Source Simulating Helium 3 Fusion Reactor for Direct Energy Conversion
Poster presentation
- プラズマ・核融合学会第33回年会, Nov. 2016, Japanese, 仙台市, Domestic conferenceRefinement of a Small Cusp-type Device to Reduce the Divertor Thermal Loads by Direct Energy Conversion
Poster presentation
- 平成28年電気関係学会関西連合大会, Nov. 2016, Japanese, 堺市, Domestic conference単一ヘリカルアンテナ型電気推進エンジンのガス圧力制御によるプラズマ生成量の変化に関する研究
Oral presentation
- プラズマ・核融合学会第33回年会, Nov. 2016, Japanese, 仙台市, Domestic conferenceStudy on the measurement of ion heating effect by a single helical antenna for a simple thruster
Poster presentation
- 平成28年電気関係学会関西連合大会, Nov. 2016, Japanese, 堺市, Domestic conference静電減速によるダイバータ熱負荷低減のための熱量測定に関する研究
Oral presentation
- プラズマ・核融合学会第33回年会, Nov. 2016, Japanese, 仙台市, Domestic conferenceA study of dual-frequency modulation for improvement of bunching in a traveling wave direct energy converter
Poster presentation
- 平成28年電気関係学会関西連合大会, Nov. 2016, Japanese, 堺市, Domestic conference進行波型直接エネルギー変換器における集群による粒子の散乱効果についての研究
Oral presentation
- 平成28年電気関係学会関西連合大会, Nov. 2016, Japanese, 堺市, Domestic conferenceカスプ型直接エネルギー変換器のラインカスプ上高周波電界の電子の運動に対する影響に関する研究II
Oral presentation
- 平成28年電気関係学会関西連合大会, Nov. 2016, Japanese, 堺市, Domestic conferenceカスプ型直接エネルギー変換器におけるイオン－イオン電界分離のための電極構造に関する研究
Oral presentation
- 平成28年電気関係学会関西連合大会, Nov. 2016, Japanese, 堺市, Domestic conferenceカスプ型直接エネルギー変換器おける粒子分離用高周波電界下の電子の運動の数値解析
Oral presentation
- プラズマ・核融合学会第33回年会, Nov. 2016, Japanese, 仙台市, Domestic conferencePDX
Poster presentation
- 平成28年度筑波大学プラズマ研究センターシンポジウム, Jul. 2016, Japanese, つくば市, Domestic conferenceGAMMA 10におけるプラズマ直接発電器の小型化のための基礎研究
Oral presentation
- 平成27年電気関係学会関西連合大会, Nov. 2015, Japanese, 寝屋川市, Domestic conference模擬実験による配電系への太陽光発電導入時の潮流と電圧変動に関する研究
Oral presentation
- 平成27年電気関係学会関西連合大会, Nov. 2015, Japanese, 寝屋川市, Domestic conference進行波型直接エネルギー変換器における電極構造の違いに対する変調効果の解析
Oral presentation
- 平成27年電気関係学会関西連合大会, Nov. 2015, Japanese, 寝屋川市, Domestic conference永久磁石によるカスプ磁場型荷電粒子分離における大型ダイバータ模擬設備用実験装置の開発に関する研究
Oral presentation
- 平成27年電気関係学会関西連合大会, Nov. 2015, Japanese, 寝屋川市, Domestic conferenceカスプ型直接エネルギー変換器のラインカスプ上高周波電界の電子の運動に対する影響に関する研究
Oral presentation
- プラズマ・核融合学会第32回年会, Nov. 2015, Japanese, 名古屋市, Domestic conferenceVariation of Particle Orbit due to Radio Frequency Field in a Cusp-type Direct Energy Converter
Poster presentation
- 25th International Toki Conference, Nov. 2015, English, Toki, Japan, International conferenceVariation in secondary electron collection and energy recovery concerning electrode angle in a high energy ion penetration scheme
Poster presentation
- 25th International Toki Conference, Nov. 2015, English, Toki, Japan, International conferenceStudies on the effect of radio frequency field in a cusp-type charge separation device for direct energy conversion
Poster presentation
- 25th International Toki Conference, Nov. 2015, English, Toki, Japan, International conferenceStudies on the axial position of the decelerator in traveling wave direct energy converter
Poster presentation
- 25th International Toki Conference, Nov. 2015, English, Toki, Japan, International conferenceStudies on power dependence of plasma production and ion heating by a single helical antenna for a simple thruster
Poster presentation
- 25th International Toki Conference, Nov. 2015, English, Toki, Japan, International conferenceImprovement of charge separation by increase of magnets in a PM-CuspDEC simulator
Poster presentation
- 平成27年電気関係学会関西連合大会, Nov. 2015, Japanese, 寝屋川市, Domestic conference2次電子放出を利用した高速イオンからのエネルギー回収における2 次電子のエネルギー分布
Oral presentation
- Joint Conference of 30th International Symposium on Space Technology and Science, 34th International Electric Propulsion Conference and 6th Nano-satellite Symposium, Jul. 2015, English, Kobe, Japan, International conferenceA Study of Miniaturization of Traveling Wave Direct Energy Converter for Loading on a Spacecraft
Poster presentation
- 2015年電子情報通信学会総合大会, Mar. 2015, Japanese, Kusatsu, Domestic conferenceアンテナ鉄塔を流れる雷サージのエネルギー貯蔵に関する研究
Oral presentation
- 平成26年電気関係学会関西支部連合大会, Nov. 2014, Japanese, Ikoma, Domestic conference二重同軸給電方式マイクロ波プラズマ発生装置の電力分配及びアンテナ構造変化によるプラズマの分布制御
Poster presentation
- 平成26年電気関係学会関西支部連合大会, Nov. 2014, Japanese, Ikoma, Domestic conference電気推進エンジンのためのガス圧力制御による高密度プラズマ生成と特性評価に関する研究
Poster presentation
- 平成26年電気関係学会関西支部連合大会, Nov. 2014, Japanese, Ikoma, Domestic conference多方向駆動プローブ機構を用いたマイクロ波放電プラズマ装置における均一性評価方法に関する研究
Poster presentation
- 平成26年電気関係学会関西支部連合大会, Nov. 2014, Japanese, Ikoma, Domestic conference進行波型直接エネルギー変換の模擬実験におけるエネルギー分布の多時点同時計測器の開発
Poster presentation
- 平成26年電気関係学会関西支部連合大会, Nov. 2014, Japanese, Ikoma, Domestic conference永久磁石を用いたカスプ型直接エネルギー変換器での高エネルギープラズマの電荷分離の数値計算
Poster presentation
- 平成26年電気関係学会関西支部連合大会, Nov. 2014, Japanese, Ikoma, Domestic conferenceカスプ型直接エネルギー変換器における高周波電界印加時の粒子束信号の解析に関する研究
Poster presentation
- 24th International Toki Conference, Nov. 2014, English, Toki, International conferenceStudies on Plasma Production and Ion Heating by Using Only a Single Helical Antenna for a Simple Thruster
Poster presentation
- 24th International Toki Conference, Nov. 2014, English, Toki, International conferenceStudies on Miniaturization of Traveling Wave Direct Energy Converter in the View Point of Deceleration Effect
Poster presentation
- 24th International Toki Conference, Nov. 2014, English, Toki, International conferenceDesign and Performance Examination of a New CuspDEC Simulator Using Permanent Magnets
Poster presentation
- 24th International Toki Conference, Nov. 2014, English, Toki, International conferenceCharacterization of Secondary Electron Collection with Magnetic Field for Energy Recovery from High Energy Ion
Poster presentation
- 平成26年電気関係学会関西支部連合大会, Nov. 2014, Japanese, Ikoma, Domestic conference2次電子放出を利用した高エネルギーイオンからのエネルギー回収における磁場導入効果の数値計算
Poster presentation
- The 10th International Conference on Open Magnetic Systems for Plasma Confinement, Aug. 2014, English, Daejeon, International conferenceStudies on Plasma Production and Ion Heating Using Bi-Directional Excitation of High Frequency Waves for Electric Propulsion
Poster presentation
- 第10回核融合エネルギー連合講演会, Jun. 2014, Japanese, Tsukuba, Domestic conference進行波型直接エネルギー変換器における変調効果の時間変化解析
Poster presentation
- 2014年電子情報通信学会総合大会, Mar. 2014, Japanese, 新潟, Domestic conference鉄塔直撃雷によって同軸ケーブル外部導体に発生する雷サージの抑制法に関する検討
Oral presentation
- プラズマ・核融合学会第30回年会, Dec. 2013, Japanese, 東京, Domestic conference進行波型直接エネルギー変換器における変調方式・減速方式の統合的検討II
Poster presentation
- プラズマ・核融合学会第30回年会, Dec. 2013, Japanese, 東京, Domestic conference永久磁石を用いたカスプ型直接エネルギー変換器における粒子軌道計算
Poster presentation
- 平成25年電気関係学会関西支部連合大会, Nov. 2013, Japanese, 寝屋川, Domestic conference二重同軸給電方式におけるマイクロ波プラズマ生成特性のアンテナ構造依存性に関する研究
Poster presentation
- 平成25年電気関係学会関西支部連合大会, Nov. 2013, Japanese, 寝屋川, Domestic conference単一アンテナによるプラズマの生成と加熱に向けたプラズマスタートアップに関する研究
Poster presentation
- 平成25年電気関係学会関西支部連合大会, Nov. 2013, Japanese, 寝屋川, Domestic conference進行波型直接エネルギー変換器における変調効果解析のための基礎研究II
Poster presentation
- 平成25年電気関係学会関西支部連合大会, Nov. 2013, Japanese, 寝屋川, Domestic conference永久磁石を用いたカスプ型直接エネルギー変換器模擬実験装置の数値計算による設計
Poster presentation
- 平成25年電気関係学会関西支部連合大会, Nov. 2013, Japanese, 寝屋川, Domestic conferenceマイクロ波励起プラズマを用いた次世代大口径プラズマの分布制御
Poster presentation
- 9th General Scientific Assembly of the Asia Plasma and Fusion Association in 2013, Nov. 2013, English, Gyeongju, International conferenceStudy of Energy Recovery from High Energy Ions Using Secondary Electron Emission with Magnetic Field
Poster presentation
- 23rd International Toki Conference, Nov. 2013, English, Toki, International conferenceStudies on Plasma Production and Ion Heating Using High Frequency for Electric Propulsion
Poster presentation
- 9th General Scientific Assembly of the Asia Plasma and Fusion Association in 2013, Nov. 2013, English, Gyeongju, International conferenceStudies on Modulation Effect Analysis in Traveling Wave Direct Energy Converter
Poster presentation
- 9th General Scientific Assembly of the Asia Plasma and Fusion Association in 2013, Nov. 2013, English, Gyeongju, International conferenceStudies on Charge Separation in a Cusp-Type Direct Energy Converter Using Permanent Magnets
Poster presentation
- 23rd International Toki Conference, Nov. 2013, English, Toki, International conferenceEffect of Radio Frequency Field to Charge Separation in a Cusp-type Direct Energy Converter Simulator
Poster presentation
- 平成25年電気関係学会関西支部連合大会, Nov. 2013, Japanese, 寝屋川, Domestic conference2次電子放出を利用した高エネルギーイオンからのエネルギー回収に向けた数値計算による評価
Poster presentation
- 23rd International Conference on Numerical Simulation of Plasmas, Sep. 2013, English, Beijing, International conferencePlasma Simulator for Control of Spatial Plasma Distribution in Microwave Discharges
Poster presentation
- 筑波大学プラズマ研究センターシンポジューム, Aug. 2013, Japanese, 筑波, Domestic conferenceGAMMA 10におけるプラズマ直接発電器の小型化のための基礎研究
Oral presentation
- 平成24年電気関係学会関西支部連合大会, Dec. 2012, Japanese, 関西大学, Domestic conference箔電極からの2次電子放出を利用した高エネルギーイオンのエネルギー回収に関する研究(II)
Poster presentation
- 平成24年電気関係学会関西支部連合大会, Dec. 2012, Japanese, 関西大学, Domestic conference二重同軸給電方式マイクロ波放電におけるプラズマ分布の制御性能評価
Poster presentation
- 平成24年電気関係学会関西支部連合大会, Dec. 2012, Japanese, 関西大学, Domestic conference電気推進のためのヘリカルアンテナを用いたプラズマ生成と加熱に関する研究
Poster presentation
- 平成24年電気関係学会関西支部連合大会, Dec. 2012, Japanese, 関西大学, Domestic conference進行波型直接エネルギー変換器における変調効果解析のための基礎研究
Poster presentation
- プラズマ・核融合学会第29回年会, Nov. 2012, Japanese, クローバープラザ, Domestic conference進行波型直接エネルギー変換器における変調方式・減速方式の統合的検討
Poster presentation
- プラズマ・核融合学会第29回年会, Nov. 2012, Japanese, クローバープラザ, Domestic conferenceカスプ型直接エネルギー変換器における高密度プラズマの荷電分離に関する研究
Poster presentation
- 22nd International Toki Conference, Nov. 2012, English, Ceratopia Toki, International conferenceExperimental and Numerical Study on Two-stage Deceleration in a Cusp-type Direct Energy Converter Simulator
Poster presentation
- 第6回日本電磁波エネルギー応用学会シンポジウム, Oct. 2012, Japanese, 京都大学, Domestic conference傾斜配置ループアンテナアレイと空洞共振器を用いた非侵襲ハイパーサーミアのためのFDTD法による電界分布の数値解析
Poster presentation
- 11th Asia Pacific Conference on Plasma Science and Technology & 25th Symposium on Plasma Science for Materials, Oct. 2012, English, Kyoto University, International conferenceTwo-dimensional fluid simulation of a microwave-excited plasma using two power sources
Poster presentation
- 11th Asia Pacific Conference on Plasma Science and Technology & 25th Symposium on Plasma Science for Materials, Oct. 2012, English, Kyoto University, International conferenceSimulation and experimental research toward distribution control of radicals in microwave discharges
Poster presentation
- 11th Asia Pacific Conference on Plasma Science and Technology & 25th Symposium on Plasma Science for Materials, Oct. 2012, English, Kyoto University, International conferenceProduction control of large diameter microwave plasmas using radiated electric field characteristics
Poster presentation
- 14th US-Japan Workshop on Inertial Electrostatic Confinement Fusion, Oct. 2012, English, University of Maryland, International conferenceOn-Going Japanese Research in DEC Technology for Terrestrial Power Plants
[Invited]
Nominated symposium
- 11th Asia Pacific Conference on Plasma Science and Technology & 25th Symposium on Plasma Science for Materials, Oct. 2012, English, Kyoto University, International conferenceDistribution Control of Microwave Plasma by Using a Slot Antenna with Variable Radiation Field Profile
Poster presentation
- 14th US-Japan Workshop on Inertial Electrostatic Confinement Fusion, Oct. 2012, English, University of Maryland, International conferenceConcept of an Aneutronic Fusion Power Plant with DEC: Lessons Learned
[Invited]
Nominated symposium
- Joint Conf. 9th Int. Conf. Open Magnetic Systems for Plasma Confinement and 3rd Int. Workshop on Plasma Material Interaction Facilities for Fusion, Aug. 2012, English, Epochal Tsukuba, International conferenceStudies on High Density Plasma Production and Neutral Pressure Control for a Cusp-type Direct Energy Converter Simulator
Poster presentation
- Joint Conf. 9th Int. Conf. Open Magnetic Systems for Plasma Confinement and 3rd Int. Workshop on Plasma Material Interaction Facilities for Fusion, Aug. 2012, English, Epochal Tsukuba, International conferenceStudies on Characteristics of a Bias-type Traveling Wave Direct Energy Converter Installed on GAMMA 10 Tandem Mirror
Poster presentation
- Joint Conf. 9th Int. Conf. Open Magnetic Systems for Plasma Confinement and 3rd Int. Workshop on Plasma Material Interaction Facilities for Fusion, Aug. 2012, English, Epochal Tsukuba, International conferenceRecent Progress of Researches on Direct Energy Conversion for a Fusion System
Oral presentation
- Joint Conf. 9th Int. Conf. Open Magnetic Systems for Plasma Confinement and 3rd Int. Workshop on Plasma Material Interaction Facilities for Fusion, Aug. 2012, English, Epochal Tsukuba, International conferenceNumerical Analysis of Particle Orbits for Modulation Process in Traveling Wave Direct Energy Converter
Poster presentation
- Joint Conf. 9th Int. Conf. Open Magnetic Systems for Plasma Confinement and 3rd Int. Workshop on Plasma Material Interaction Facilities for Fusion, Aug. 2012, English, Epochal Tsukuba, International conferenceExamination on Plasma Production and Ion Heating for Electric Propulsion Using a Single Helical Antenna
Poster presentation
- Joint Conf. 9th Int. Conf. Open Magnetic Systems for Plasma Confinement and 3rd Int. Workshop on Plasma Material Interaction Facilities for Fusion, Aug. 2012, English, Epochal Tsukuba, International conferenceBasic Characteristics of Secondary Electron Emission from Foil Electrodes for New Energy Recovery Scheme of High Energy Ions in an Advanced Fusion
Poster presentation
- 第9回核融合エネルギー連合講演会, Jun. 2012, Japanese, 神戸国際会議場, Domestic conference箔電極からの2 次電子放出を利用した高エネルギーイオンのエネルギー回収実験
Poster presentation
- The 21st International Toki Conference, Nov. 2011, English, National Institute for Fusion Science, 土岐, International conferenceStudies on Plasma Production and Acceleration Using Rotating Electromagnetic Fields for Electrical Propulsion Engine
Poster presentation
- The 21st International Toki Conference, Nov. 2011, English, National Institute for Fusion Science, 土岐, International conferenceStudies on Investigation of Behavior of Traveling Wave Direct Energy Converter Using a Simulator Installed on GAMMA 10 Tandem Mirror with One Side Plugging
Poster presentation
- The 21st International Toki Conference, Nov. 2011, English, National Institute for Fusion Science, 土岐, International conferenceStudies on Application of Cusp-Type Particle Separation and Two-Stage Deceleration to Dense Plasma for Direct Energy Conversion
Poster presentation
- 2011 Kansai-section Joint Convention of Institutes of Electrical Engineering, Oct. 2011, Japanese, 電気関係学会関西支部, 姫路, Domestic conference箔電極からの2次電子放出を利用した高エネルギーイオンのエネルギー回収に関する研究
Poster presentation
- 2011 Kansai-section Joint Convention of Institutes of Electrical Engineering, Oct. 2011, Japanese, 電気関係学会関西支部, 姫路, Domestic conference二重同軸給電を用いたマイクロ波放電におけるプラズマ分布制御に関する研究
Poster presentation
- 2011 Kansai-section Joint Convention of Institutes of Electrical Engineering, Oct. 2011, Japanese, 電気関係学会関西支部, 姫路, Domestic conference空洞共振器を利用したハイパーサーミア構成のためのFDTD法による電界分布の数値解析
Poster presentation
- 2011 Kansai-section Joint Convention of Institutes of Electrical Engineering, Oct. 2011, Japanese, 電気関係学会関西支部, 姫路, Domestic conference回転電磁界を用いたプラズマの生成と加熱に関する研究
Poster presentation
- 2011 Kansai-section Joint Convention of Institutes of Electrical Engineering, Oct. 2011, Japanese, 電気関係学会関西支部, 姫路, Domestic conferenceヘリウム3燃料核融合のための進行波型直接エネルギー変換器の変調特性に関する研究
Poster presentation
- 2011 Kansai-section Joint Convention of Institutes of Electrical Engineering, Oct. 2011, Japanese, 電気関係学会関西支部, 姫路, Domestic conferenceカスプ型直接エネルギー変換器における2段減速の軸方向電極位置依存性の数値解析
Poster presentation
- 2011 Kansai-section Joint Convention of Institutes of Electrical Engineering, Oct. 2011, Japanese, 電気関係学会関西支部, 姫路, Domestic conferenceエッチングガスを用いたRF放電におけるラジカル形成のモデル化及び実験研究
Poster presentation
- 筑波大学プラズマ研究センターシンポジューム, Jul. 2011, Japanese, 筑波大学プラズマ研究センター, つくば, Domestic conferenceGAMMA 10における高密度/高エネルギー粒子束に対する直接エネルギー変換の基礎研究
Oral presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 27th Annual Meeting, Dec. 2010, Japanese, プラズマ・核融合学会, 札幌, Domestic conferenceApplication of Traveling Wave Direct Energy Converter to End-loss Flux of GAMMA 10 III
Oral presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 27th Annual Meeting, Dec. 2010, Japanese, プラズマ・核融合学会, 札幌, Domestic conferenceAnalysis of GAMMA 10 end-loss ion flux from the viewpoint of diverter simulation and direct energy conversion experiments
Poster presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 27th Annual Meeting, Dec. 2010, Japanese, プラズマ・核融合学会, 札幌, Domestic conferenceExperimental Studies of Two-Stage Deceleration in a Cusp-Type Direct Energy Converter
Oral presentation
- 2010 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2010, Japanese, 電気関係学会関西支部, 草津, Domestic conference粒子軌道分離による進行波型直接エネルギー変換器の効率改善法に関する研究
Poster presentation
- 2010 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2010, Japanese, 電気関係学会関西支部, 草津, Domestic conference回転電磁界型電気推進エンジンにおけるプラズマの生成と加速に関する研究
Poster presentation
- 2010 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2010, Japanese, 電気関係学会関西支部, 草津, Domestic conferenceマイクロ波放電におけるプラズマ分布制御のためのガス供給システムに関する研究
Poster presentation
- 2010 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2010, Japanese, 電気関係学会関西支部, 草津, Domestic conferenceカスプ型直接エネルギー変換器における広エネルギー帯域幅を持つイオンからの直接発電に関する研究
Poster presentation
- The 8th International Conference on Open Magnetic Systems for Plasma Confinement, Jul. 2010, English, Budker Institute of Nuclear Physics, ノボシビリスク, International conferenceSimulation Experiments of Traveling Wave Direct Energy Converter on GAMMA 10 Tandem Mirror
Poster presentation
- The 8th International Conference on Open Magnetic Systems for Plasma Confinement, Jul. 2010, English, Budker Institute of Nuclear Physics, ノボシビリスク, International conferenceRotating RF System for Novel Control of a Magnetoplasma Thruster
Oral presentation
- 筑波大学プラズマ研究センターシンポジューム, Jul. 2010, Japanese, 筑波大学プラズマ研究センター, つくば, Domestic conferenceGAMMA 10における高密度/高エネルギー粒子束に対する直接エネルギー変換の基礎研究
Oral presentation
- The 8th International Conference on Open Magnetic Systems for Plasma Confinement, Jul. 2010, English, Budker Institute of Nuclear Physics, ノボシビリスク, International conferenceCharge Separation and Deceleration of High Density Plasma in a Cusp Type Direct Energy Converter Simulator
Poster presentation
- 核融合直接エネルギー変換研究会, Jun. 2010, Japanese, DEC研究グループ, つくば, Domestic conferenceGAMMA 10におけるTWDEC実験
Oral presentation
- 核融合直接エネルギー変換研究会, Jun. 2010, Japanese, DEC研究グループ, つくば, Domestic conferenceCUSPDEC実験状況
Oral presentation
- The 28th meeting of IEICE Technical Committee on Solar Power Satellite/Station, Mar. 2010, Japanese, 京都大学生存圏研究所METLAB共同利用専門委員会, 宇治, Domestic conferenceFundamental Study on Low Invasive Hyperthermia Using Long-wavelength Microwave IV
Oral presentation
- 2010年春季(第57回) 応用物理学関係連合講演会, Mar. 2010, Japanese, 応用物理学会, 計測自動制御学会, 日本結晶学会, 日本真空協会, 日本顕微鏡学会, 日本物理教育学会, 日本分光学会, 平塚, Domestic conferenceスロットアンテナからの放射電界に関する数値解析
[Invited]
Invited oral presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 26th Annual Meeting, Dec. 2009, Japanese, プラズマ・核融合学会, 京都, Domestic conferenceApplication of Traveling Wave Direct Energy Converter to End-loss Flux of GAMMA 10 II
Poster presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 26th Annual Meeting, Dec. 2009, Japanese, プラズマ・核融合学会, 京都, Domestic conferenceStudies of the Dependences on the Parameters and Scaling Law of Charge Separation by Using Cusp Magnetic Field
Poster presentation
- 2009 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2009, Japanese, 電気関係学会関西支部, 吹田, Domestic conference量子化学計算と二次元流体シミュレーションを併用したプラズマ気相反応解析
Poster presentation
- 2009 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2009, Japanese, 電気関係学会関西支部, 吹田, Domestic conference進行波型直接エネルギー変換器への粒子軌道分離による効率改善法の適用に関する基礎研究
Poster presentation
- 2009 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2009, Japanese, 電気関係学会関西支部, 吹田, Domestic conference高エネルギーイオンビームからの新しいエネルギー回収法の基礎実験
Poster presentation
- 第3回日本電磁波エネルギー応用学会シンポジウム, Nov. 2009, Japanese, 日本電磁波エネルギー応用学会, 東京, Domestic conferenceFundamental Studies of Non-invasive Hyperthermia Using an Inclined Antenna Array Applicator with Phase Control
Oral presentation
- 2009 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2009, Japanese, 電気関係学会関西支部, 吹田, Domestic conferenceマルチスロット励起マイクロ波プラズマにおける波のモード制御の研究
Poster presentation
- 2009 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2009, Japanese, 電気関係学会関西支部, 吹田, Domestic conferenceカスプ磁場による荷電粒子分離のプラズマ密度依存性に関する研究
Poster presentation
- Asia Plasma and Fusion Association in 2009 and Asia-Pacific Plasma Theory Conference in 2009, Oct. 2009, English, The Japan Society of Plasma Science and Nuclear Fusion Research, Japan Atomic Energy Agency, 青森, International conferenceStudies of Scaling Law on Charge Separation in a Direct Energy Converter Using Slanted Cusp Magnetic Field
Poster presentation
- Asia Plasma and Fusion Association in 2009 and Asia-Pacific Plasma Theory Conference in 2009, Oct. 2009, English, The Japan Society of Plasma Science and Nuclear Fusion Research, Japan Atomic Energy Agency, 青森, International conferenceApplication of TWDEC Simulator to End-loss Flux of GAMMA 10 Tandem Mirror
Poster presentation
- Asia Plasma and Fusion Association in 2009 and Asia-Pacific Plasma Theory Conference in 2009, Oct. 2009, English, The Japan Society of Plasma Science and Nuclear Fusion Research, Japan Atomic Energy Agency, 青森, International conferenceA Model for Antenna-Plasma Wave Coupling towards Control of Uniformity in Slot-Excited Microwave Discharges
Poster presentation
- 2009年(平成21年)秋季 第70回応用物理学会学術講演会, Sep. 2009, Japanese, 応用物理学会, 富山, Domestic conferenceスロットアンテナからの放射電界とプラズマ分布に関する数値解析
Oral presentation
- 7th Workshop on Microwave Discharges: Fundamentals and Applications, Sep. 2009, English, 浜松, International conferenceThree-dimensional Fluid Simulations of a Line-shaped Microwave Plasma
Poster presentation
- 7th Workshop on Microwave Discharges: Fundamentals and Applications, Sep. 2009, English, 浜松, International conferenceAnalyses on Radiation Properties of Slot-excited Microwave Plasma Devices
Oral presentation
- 筑波大学プラズマ研究センターシンポジューム, Jul. 2009, Japanese, 筑波大学プラズマ研究センター, つくば, Domestic conference今後の直接エネルギー変換の研究とGAMMA 10
Public symposium
- 筑波大学プラズマ研究センターシンポジューム, Jul. 2009, Japanese, 筑波大学プラズマ研究センター, つくば, Domestic conferenceGAMMA 10における直接エネルギー変換の基礎研究
[Invited]
Invited oral presentation
- The 24th meeting of IEICE Technical Committee on Solar Power Satellite/Station, Mar. 2009, Japanese, 京都大学生存圏研究所METLAB共同利用専門委員会, 京都, Domestic conferenceFundamental Study on Low Invasive Hyperthermia Using Long-wavelength Microwave III
Oral presentation
- The 24th meeting of IEICE Technical Committee on Solar Power Satellite/Station, Mar. 2009, Japanese, 京都大学生存圏研究所METLAB共同利用専門委員会, 京都, Domestic conferenceExperimental Study on Method of Test for Investigation of Reinforcing Bar Position and Defect in Hardened Concrete by Micro-wave
Oral presentation
- Plasma Science Symposium 2009/The 26th Symposium on Plasma Processing, Feb. 2009, English, 日本学術振興会プラズマ材料科学第153委員会, 応用物理学会, プラズマ・核融合学会, 名古屋, Domestic conferenceExperiments and Numerical Simulations on Radiated Electric Field Control of a Large-area Microwave Plasma Device
Poster presentation
- Plasma Science Symposium 2009/The 26th Symposium on Plasma Processing, Feb. 2009, English, 日本学術振興会プラズマ材料科学第153委員会, 応用物理学会, プラズマ・核融合学会, 名古屋, Domestic conferenceスロット付導波管を用いた長尺マイクロ波プラズマの生成実験と三次元流体シミュレーション/Plasma Production Experiments and Three dimensional Fluid Simulations of
Poster presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 25th Annual Meeting, Dec. 2008, Japanese, プラズマ・核融合学会, 宇都宮, Domestic conferenceApplication of Traveling Wave Direct Energy Converter to End-loss Flux of GAMMA 10
Poster presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 25th Annual Meeting, Dec. 2008, Japanese, プラズマ・核融合学会, 宇都宮, Domestic conferenceStudies on Charge Separation and Improvement of Efficiency of CUSP-type Direct Energy Converter for GAMMA 10 End-loss Plasma
Poster presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 25th Annual Meeting, Dec. 2008, Japanese, プラズマ・核融合学会, 宇都宮, Domestic conferenceNumerical Analysis of the Second Harmonic Resonance Ion Heating in the Central Cell of HIEI Tandem Mirror III
Poster presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 25th Annual Meeting, Dec. 2008, Japanese, プラズマ・核融合学会, 宇都宮, Domestic conferenceBasic Studies for Improvement of Efficiency in a Cusp-Type Direct Energy Converter by Using Two-Stage Deceleration
Poster presentation
- 2008 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2008, Japanese, 電気関係学会関西支部, 京都, Domestic conference長波長マイクロ波を用いた非侵襲位相制御型ハイパーサーミアの複数層構造生体等価試料の加温実験
Oral presentation
- 2008 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2008, Japanese, 電気関係学会関西支部, 京都, Domestic conference進行波型直接エネルギー変換器のビーム変調過程の検討
Oral presentation
- 2008 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2008, Japanese, 電気関係学会関西支部, 京都, Domestic conference高エネルギー粒子からのエネルギー回収と広エネルギー帯域条件に対する効率化
Oral presentation
- 2008 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2008, Japanese, 電気関係学会関西支部, 京都, Domestic conference広帯域エネルギー分布を持つイオンビームに対する進行波型直接エネルギー変換器の構造改善
[Invited]
Invited oral presentation
- 2008 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2008, Japanese, 電気関係学会関西支部, 京都, Domestic conferenceスロット励起マイクロ波による波の空間構造制御とプラズマ生成に関する研究
Oral presentation
- 2008 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2008, Japanese, 電気関係学会関西支部, 京都, Domestic conferenceカスプ型直接エネルギー変換器内での荷電粒子軌道解析のための数値計算(II)
[Invited]
Invited oral presentation
- 2008 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2008, Japanese, 電気関係学会関西支部, 京都, Domestic conferenceカスプ型直接エネルギー変換器における2段減速実験と数値計算による効率改善の検討
Oral presentation
- International Congress on Plasma Physics 2008, Sep. 2008, English, The Japan Society of Plasma Science and Nuclear Fusion Research, National Institute for Fusion Science, Kyushu University, 福岡, International conferenceStudy on wave mode control in slot-excited microwave plasmas
Poster presentation
- International Congress on Plasma Physics 2008, Sep. 2008, English, The Japan Society of Plasma Science and Nuclear Fusion Research, National Institute for Fusion Science, Kyushu University, 福岡, International conferenceNumerical study on discharge characteristics of a line-shaped microwave plasma with a rectangular slotted waveguide
Poster presentation
- International Congress on Plasma Physics 2008, Sep. 2008, English, The Japan Society of Plasma Science and Nuclear Fusion Research, National Institute for Fusion Science, Kyushu University, 福岡, International conferenceFluid simulation of c-C5F8 discharges with a quantum chemistry calculation
Poster presentation
- International Congress on Plasma Physics 2008, Sep. 2008, English, The Japan Society of Plasma Science and Nuclear Fusion Research, National Institute for Fusion Science, Kyushu University, 福岡, International conferenceAnalysis of Behavior of Charged Particles in Cusp Type Direct Energy Converter for Advanced Fusion
Poster presentation
- パワーエレクトロニクス学会定例研究会, Dec. 2007, Japanese, 大阪工業大学, Domestic conference高周波のインバータ駆動用に適したドライブ回路
Poster presentation
- パワーエレクトロニクス学会定例研究会, Dec. 2007, Japanese, 大阪工業大学, Domestic conferencePEFCを用いたコージェネレーションシステムの運用方法とシミュレーション結果
Poster presentation
- 2007 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2007, Japanese, 電気関係学会関西支部, 神戸市, Domestic conference平板状マイクロ波放電における波の空間構造の解析
Oral presentation
- 2007 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2007, Japanese, 電気関係学会関西支部, 神戸市, Domestic conference電磁波電界による高速荷電粒子からのエネルギー回収の検討
Oral presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 24th Annual Meeting, Nov. 2007, Japanese, プラズマ・核融合学会, 姫路市, Domestic conferenceStudies of Scaling Law on Direct Energy Conversion for Advanced Fusion
[Invited]
Invited oral presentation
- 2007 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2007, Japanese, 電気関係学会関西支部, 神戸市, Domestic conference進行波型直接エネルギー変換器の動作過程のイオンビームエネルギー依存性に関する研究
Oral presentation
- 電気関係学会関西支部, Nov. 2007, Japanese, 神戸大学, Domestic conference集合住宅用PEFC分散電源システムへのEHP導入効果に関する研究
Oral presentation
- 2007 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2007, Japanese, 電気関係学会関西支部, 神戸市, Domestic conference材料ガス用金属フィーダを内挿したマイクロ波励起プラズマ装置の2次元流体シミュレーション
[Invited]
Invited oral presentation
- 2007 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2007, Japanese, 電気関係学会関西支部, 神戸市, Domestic conferenceプラズマ気相反応解析のための素過程モデルの構築
Oral presentation
- 2007 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2007, Japanese, 電気関係学会関西支部, 神戸市, Domestic conferenceカスプ型直接エネルギー変換器内での荷電粒子軌道解析のための数値計算
Oral presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 24th Annual Meeting, Nov. 2007, Japanese, プラズマ・核融合学会, 姫路市, Domestic conferenceNumerical Analysis of the Second Harmonic Resonance Ion Heating in the Central Cell of HIEI Tandem Mirror II
Poster presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 24th Annual Meeting, Nov. 2007, Japanese, プラズマ・核融合学会, 姫路市, Domestic conferenceData Analysis of the Divertor Stabilization Experiments in the HANBIT Mirror Device
Poster presentation
- The 8th International Symposium on Fusion Nuclear Technology, Oct. 2007, English, ハイデルベルグ, International conferenceExperimental Study of Deceleration Process of Traveling Wave Direct Energy Converter for Advanced Fusion
Poster presentation
- The 16th Meeting of The Institute of Electronics, Information and Communication Engineers of Japan Technical Committee on Solar Power Satellite Station, Feb. 2007, Japanese, 京都大学生存圏研究所METLAB共同利用専門委員会, 宇治市, Domestic conferenceFundametal Study on Low Invasive Hyperthermia Using Long-wavelength Microwave
Oral presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 23rd Annual Meeting, Nov. 2006, Japanese, プラズマ・核融合学会, つくば市, Domestic conferenceApplication of Direct Energy Converter to the GAMMA 10 Device
Poster presentation
- 2006 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2006, Japanese, 電気関係学会関西支部, 枚方市, Domestic conference長波長マイクロ波を用いた位相制御型非侵襲ハイパーサーミアの基礎実験
Oral presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 23rd Annual Meeting, Nov. 2006, Japanese, プラズマ・核融合学会, つくば市, Domestic conferenceExperiments of the Beam Deceleration on a Traveling Wave Direct Energy Converter Simulator
Poster presentation
- 2006 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2006, Japanese, 電気関係学会関西支部, 枚方市, Domestic conference進行波型直接エネルギー変換器における減速器電極の最適配置
Oral presentation
- 2006 Kansai-section Joint Convention of Institutes of Electrical Engineering, Nov. 2006, Japanese, 電気関係学会関西支部, 枚方市, Domestic conference傾斜カスプ磁場における荷電粒子の振舞と直接エネルギー変換に関する基礎研究
Oral presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 23rd Annual Meeting, Nov. 2006, Japanese, プラズマ・核融合学会, つくば市, Domestic conferenceCusp-Type Direct Energy Conversion in a Tandem Miroor
Oral presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 23rd Annual Meeting, Nov. 2006, Japanese, プラズマ・核融合学会, つくば市, Domestic conferenceExperimental Simulation on Particle Discrimination in a Cusp-Type Direct Energy Converter IV
Poster presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 23rd Annual Meeting, Nov. 2006, Japanese, プラズマ・核融合学会, つくば市, Domestic conferenceNumerical Analysis of the Second Harmonic Resonance Ion Heating in the Central Cell of HIEI Tandem Mirror
Poster presentation
- The 61st Japan Society of Civil Engineers Annual Meeting, Sep. 2006, Japanese, 土木学会, 草津市, Domestic conferenceマイクロ波利用赤外線サーモグラフィ法による欠陥/鉄筋検出法の検討
Oral presentation
- 京都大学生存圏研究所第51回生存圏シンポジウム全国・国際共同利用合同シンポジウム, Sep. 2006, Japanese, 京都大学生存圏研究所, 宇治市, Domestic conferenceマイクロ波加熱を用いたコンクリート内の欠陥および鉄筋の検出実験
Oral presentation
- The 61st Japan Society of Civil Engineers Annual Meeting, Sep. 2006, Japanese, 土木学会, 草津市, Domestic conferenceマイクロ波加熱と赤外線サーモグラフィを併用したコンクリート構造物の非破壊試験方法に関する研究
Oral presentation
- 平成18年度土木学会関西支部年次学術講演会, Jun. 2006, Japanese, 土木学会関西支部, 神戸市, Domestic conferenceマイクロ波加熱を用いた透過型赤外線サーモグラフィ法の基礎実験
Oral presentation
- The 55th the Society of Material Science, Japan Annual Meetings, May 2006, Japanese, 日本材料学会, 長岡市, Domestic conferenceAnalysis of Microwave Propagationfor Infrared Thermography Method Using Microwave Heating
Oral presentation
- The 55th the Society of Material Science, Japan Annual Meetings, May 2006, Japanese, 日本材料学会, 長岡市, Domestic conferenceResearch on Applicability of Opposite to Heated Surface That Uses Microwave Heating to Internal Defect on Concrete Inside and Reinforced Concrete Inquiry and Infrared Thermography
Oral presentation
- 第53回応用物理学関係連合講演会, Mar. 2006, Japanese, 応用物理学会, 武蔵工業大学, Domestic conference平板状マイクロ波放電における波の空間構造
Oral presentation
- 第31回生存圏電波科学国際シンポジウム, Mar. 2006, Japanese, 京都大学, Domestic conferenceBasic Experiments for Detection of Defects and Reinforcing Bars in Concrete by Microwave Irradiation II
Oral presentation
- 6th International Conference on Reactive Plasmas, Jan. 2006, English, 応用物理学会, 仙台, International conferenceSpatial Structure of Waves and Plasma Uniformity in Planar Microwave Discharges
Poster presentation
- 6th International Conference on Reactive Plasmas, Jan. 2006, English, 応用物理学会, 仙台, International conferenceExperimental and Simulation Studies of Gas Phase Chemical Reaction in a Microwave Plasma
Poster presentation
- The 2005 Kansai-Section Joint Convention of Institutes of Electrical Engineering, Japan, Nov. 2005, Japanese, 京都大学, Domestic conference進行波型直接エネルギー変換模擬実験装置における減速器内波長連続変化の効果
Oral presentation
- プラズマ・核融合学会第22回年会, Nov. 2005, Japanese, タワーホール船堀, Domestic conferenceSimulation Experiment on Traveling Wave Direct Energy Converter X
Poster presentation
- The 2005 Kansai-Section Joint Convention of Institutes of Electrical Engineering, Japan, Nov. 2005, Japanese, 京都大学, Domestic conference自砕性コンクリート開発のためのモルタル試料の複素比誘電率の水分含有率依存性の測定
Oral presentation
- The 2005 Kansai-Section Joint Convention of Institutes of Electircal Engineering, Japan, Nov. 2005, Japanese, 京都大学, Domestic conferenceカスプ型直接エネルギー変換器の動作特性解析
Oral presentation
- プラズマ・核融合学会第22回年会, Nov. 2005, Japanese, タワーホール船堀, Domestic conferenceExperimental Simulation on Particle Discrimination in a Cusp-Type Direct Energy Converter III
Poster presentation
- プラズマ・核融合学会第22回年会, Nov. 2005, Japanese, タワーホール船堀, Domestic conferenceThe dispersion relation analysis of low-frequency fluctuations in GAMMA 10
Poster presentation
- 平成17年度土木学会全国大会第60回年次学術講演会, Sep. 2005, Japanese, 早稲田大学, Domestic conference赤外線サーモグラフィ法によるかぶり検出に対するマイクロ波加熱の適用性に関する研究
Oral presentation
- 平成17年度土木学会全国大会第60回年次学術講演会, Sep. 2005, Japanese, 早稲田大学, Domestic conferenceEasy-break Concrete における炭素繊維アンテナの加熱特性
Oral presentation
- The 5th General Scientific Assembly of Asia Plasma & Fusion Association on Progress of Fusion Science and Technology in Asia, Aug. 2005, English, Asia Plasma & Fusion Association, 済州, International conferenceExperiment on Behavior of Charged Particles in Cusp Direct Energy Converter for D-3He Fusion
Poster presentation
- The 5th General Scientific Assembly of Asia Plasma & Fusion Association on Progress of Fusion Science and Technology in Asia, Aug. 2005, English, Asia Plasma & Fusion Association, 済州, International conferenceDeceleration Experiment on a Simulator of Traveling Wave Direct Energy Converter for D-3He Fusion Reactor
Poster presentation
- 平成17年度土木学会関西支部年次学術講演会, May 2005, Japanese, 大阪工業大学, Domestic conferenceマイクロ波照射によるコンクリート中の鉄筋／空洞検出の基礎実験
Oral presentation
- 日本材料学会第54期学術講演会, May 2005, Japanese, 仙台市民会館, Domestic conferenceStudy on detection of internal defect in concrete by means of thermography on concrete surface heated by microwave
Oral presentation
- 日本材料学会第54期学術講演会, May 2005, Japanese, 仙台市民会館, Domestic conferenceResearch on a method of detecting concrete cover on reinforcing bar by means of thermography on concrete surface heated by microwave
Oral presentation
- 日本材料学会第54期学術講演会, May 2005, Japanese, 仙台市民会館, Domestic conferenceCompaction of a Carbon-fiber Antenna for Easy-break Concrete
Oral presentation
- 平成17年電気学会全国大会, Mar. 2005, Japanese, 電気学会, 徳島大学, Domestic conferenceマイクロ波照射によるコンクリート内欠陥検出法の基礎研究
Oral presentation
- 日本物理学会第60回年次大会, 2005, Japanese, 日本物理学会, 東京理科大学野田キャンパス, Domestic conference高イオン温度ミラープラズマにおける電子ドリフト波の特性
Oral presentation
- 日本材料学会複合材料部門委員会「寿命制御コンクリート」平成16年度第3回研究会, 2005, Japanese, 日本材料学会複合材料部門委員会, 未記入, Domestic conferenceマイクロ波照射によるコンクリート内部の欠陥検出の基礎実験Ⅱ
Oral presentation
- 電気情報通信学会第8回宇宙太陽発電時限研究専門委員会研究会, 2005, Japanese, 電気情報通信学会, 未記入, Domestic conferenceマイクロ波照射によるコンクリート内部の欠陥及び鉄筋の検出基礎実験
Oral presentation
- 土木学会第59回年次学術講演会, 2004, Japanese, 土木学会, 愛知工業大学, Domestic conference赤外線サーモグラフィ法へのマイクロ波加熱の適用に関する基礎研究
Oral presentation
- 土木学会第59回年次学術講演会, 2004, Japanese, 土木学会, 愛知工業大学, Domestic conference赤外線サーモグラフィ法による欠陥・鉄筋探査へのマイクロ波加熱の適用性に関する研究
Oral presentation
- プラズマ・核融合学会第21回年会, 2004, Japanese, プラズマ・核融合学会, 静岡大学, Domestic conference進行波型直接エネルギー変換の模擬実験Ⅳ
Oral presentation
- 平成16年電気関係学会関西支部連合大会, 2004, Japanese, 電気関係学会関西支部, 同志社大学, Domestic conference進行波型直接エネルギーの変換の模擬実験における高調波の抑制
Oral presentation
- 日本材料学会複合材料部門委員会「寿命制御コンクリート」平成16年度第2研究会, 2004, Japanese, 日本材料学会複合材料部門委員会, 未記入, Domestic conferenceマイクロ波照射時の導電材接触点の加熱機構解析
Oral presentation
- 日本材料学会複合材料部門委員会「寿命制御コンクリート」平成16年度第1回研究会, 2004, Japanese, 日本材料学会複合材料部門委員会, 未記入, Domestic conferenceマイクロ波照射による材料の欠陥検出
Oral presentation
- 平成16年電気関係学会関西支部連合大会, 2004, Japanese, 電気関係学会関西支部, 同志社大学, Domestic conferenceマイクロ波照射によるコンクリート内部の欠陥探索法の物理機構解析
Oral presentation
- プラズマ・核融合学会第21回年会, 2004, Japanese, プラズマ・核融合学会, 静岡大学, Domestic conferenceマイクロ波照射によるコンクリート内部の欠陥検出の基礎実験
Oral presentation
- 日本材料学会 複合材料部門委員会「寿命制御コンクリート」平成15年度第3回研究会, 2004, Japanese, 日本材料学会 複合材料部門, 未記入, Domestic conferenceコンクリートのマイクロ波加熱による欠陥検出のための基礎実験
Oral presentation
- 日本材料学会複合材料部門委員会「寿命制御コンクリート」平成16年度第1回研究会, 2004, Japanese, 日本材料学会複合材料部門委員会, 未記入, Domestic conferenceカスプ型直接エネルギー変換における粒子分裂模擬実験Ⅱ
Oral presentation
- 平成16年電気関係学会関西支部連合大会, 2004, Japanese, 電気関係学会関西支部, 同志社大学, Domestic conferenceカスプ型直接エネルギー変換における荷電粒子分離の模擬実験
Oral presentation
- 日本材料学会第53期学術講演会, 2004, Japanese, 日本材料学会, 岡山大学, Domestic conferenceEasy-break Concreteにおける導電材混入効果の解析実験
Oral presentation
- 平成16年度土木学会関西支部年次学術講演会, 2004, Japanese, 土木学会関西支部, 立命館大学びわこ・くさつキャンパス, Domestic conferenceEasy-break Concreteにおける導電材の混入条件の最適化
Oral presentation
- 土木学会第59回年次学術講演会, 2004, Japanese, 土木学会, 愛知工業大学, Domestic conferenceEasy-break Concreteにおけるマイクロ波照射による微小領域の爆破
Oral presentation
- 日本材料学会第53期学術講演会, 2004, Japanese, 日本材料学会, 岡山大学, Domestic conferenceEasy-break Concreteにおけるマイクロ波照射による炭素繊維加熱特性
Oral presentation
- 平成16年度土木学会関西支部年次学術講演会, 2004, Japanese, 土木学会関西支部, 立命館大学びわこ・くさつキャンパス, Domestic conferenceEasy-break Concreteにおけるマイクロ波照射による起爆特性
Oral presentation
- The Japan Society of Plasma Science and Nuclear Fusion Research 20th Annual Meeting, Nov. 2003, Japanese, プラズマ・核融合学会, 水戸市, Domestic conferenceExperiment on Fast Wave Ion Cyclotron Heating of Divertor-Stabilized Plasmas in the HIEI Tandem Mirror
Poster presentation
- 第1回宇宙太陽発電と無線電力伝送に関する研究会, Mar. 2003, Japanese, 京都大学宙空電波科学研究センターMETLAB共同利用専門委員会, 京都大学宙空電波科学研究センター, Domestic conference寿命制御コンクリート開発のための実規模コンクリートへのマイクロ波照射実験
Others
- 平成15年電気学会全国大会, Mar. 2003, Japanese, 電気学会, 東北学院大学, Domestic conference寿命制御コンクリート開発のためのマイクロ波漏洩強度の測定（Ⅱ）
Others
- 土木学会第58回年次学術講演会, 2003, Japanese, 土木学会, 徳島大学, Domestic conference微小爆発を利用したEasy-break concrete構成のための基礎実験
Oral presentation
- 日本材料学会 複合材料部門委員会「寿命制御コンクリート」平成15年度第2回研究会, 2003, Japanese, 日本材料学会複合材料部門委員会, 未記入, Domestic conference導電材料の混入による寿命制御コンクリート開発のための基礎実験（Ⅲ）
Oral presentation
- 日本材料学会 復号材料部門委員会「寿命制御コンクリート」平成15年度第1回研究会, 2003, Japanese, 未記入, 未記入, Domestic conference導電材料の混入による寿命制御コンクリート開発のための基礎実験（Ⅱ）
Oral presentation
- 電気学会放電研究会, 2003, Japanese, 電気学会, 未記入, Domestic conference導電材尖鋭部のマイクロ波強電界を用いた自砕性コンクリートの加熱効率の向上
Oral presentation
- プラズマ・核融合学会第20回年会, 2003, Japanese, プラズマ・核融合学会, 茨城県立県民文化センター, Domestic conference進行波形直接エネルギー変換の模擬実験ⅤⅢ
Oral presentation
- 電気学会電磁環境研究会, 2003, Japanese, 未記入, 未記入, Domestic conference寿命制御コンクリート開発のためのマイクロ波漏洩強度の測定
Others
- 平成15年電気関係学会関西支部連合大会, 2003, Japanese, 電気学会関西支部, 大阪市立大学, Domestic conference自砕性コンクリート開発のための導電材へのマイクロ波照射実験
Oral presentation
- 平成15年電気関係学会関西支部連合大会, 2003, Japanese, 電気学会関西支部, 大阪市立大学, Domestic conferenceレーザー光生成プラズマによる放電誘発に伴う発光の測定
Oral presentation
- 平成15年度土木学会関西支部年次学術講演会, 2003, Japanese, 土木学会関西支部, 摂南大学, Domestic conferenceEasy-break concreteのマイクロ波伝搬・吸収特性測定実験
Oral presentation
- 日本材料学会第52期学術講演会, 2003, Japanese, 日本材料学会, 工学院大学, Domestic conferenceEasy-break concrete のマイクロ波加熱特性の解析
Oral presentation
Association Memberships
Research Projects
- 科学研究費補助金／基盤研究(B), Apr. 2016 - Mar. 2019, Principal investigator
Competitive research funding
- 学術研究助成基金助成金／挑戦的萌芽研究, Apr. 2016 - Mar. 2018, Principal investigator
Competitive research funding
- 学術研究助成基金助成金／基盤研究(C), Apr. 2013 - Mar. 2016, Principal investigator
Competitive research funding
- 科学研究費補助金／基盤研究(B), 2011
Competitive research funding
- 科学研究費補助金／基盤研究(C), 2010, Principal investigator
Competitive research funding
- 科学研究費補助金／基盤研究(C), 2006, Principal investigator
Competitive research funding