Research Output 1979 2019

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3 Citations (Scopus)

1D simulation of sawtooth crash based on transport bifurcation

Kubota, T., Itoh, S., Yagi, M. & Fukuyama, A., Dec 1 1997, In : Plasma Physics and Controlled Fusion. 39, 9, p. 1397-1407 11 p.

Research output: Contribution to journalArticle

crashes
Pressure gradient
Thermal conductivity
pressure gradients
simulation

28-GHz ECHCD system with beam focusing launcher on the QUEST spherical tokamak

Idei, H., Onchi, T., Kariya, T., Tsujimura, T. I., Kubo, S., Kobayashi, S., Sakaguchi, M., Imai, T., Hasegawa, M., Nakamura, K., Mishra, K., Fukuyama, M., Yunoki, M., Kojima, S., Watanabe, O., Kuroda, K., Hanada, K., Nagashima, Y., Ejiri, A., Matsumoto, N. & 7 others, Ono, M., Higashijima, A., Nagata, T., Shimabukoro, S., Takase, Y., Fukuyama, A. & Murakami, S., Jan 1 2019, In : Fusion Engineering and Design.

Research output: Contribution to journalArticle

Cyclotrons
Plasmas
Electrons
Electron cyclotron resonance
Test facilities
21 Citations (Scopus)

A 6 MeV Heavy Ion Beam Probe for the Large Helical Device

Fujisawa, A., Iguchi, H., Taniike, A., Sasao, M. & Hamada, Y., Aug 1994, In : IEEE Transactions on Plasma Science. 22, 4, p. 395-402 8 p.

Research output: Contribution to journalArticle

analyzers
heavy ions
ion beams
probes
attenuation

A 6 MW/m2 High Heat Flux Testing Facility of Irradiated Materials Using Infrared Plasma-Arc Lamps

Sabau, A. S., Tokunaga, K., Littleton, M. G., Kiggans, J. O., Schaich, C. R., Dinwiddie, R. B., Moore, D. T., Ueda, Y. & Katoh, Y., Oct 3 2019, In : Fusion Science and Technology. 75, 7, p. 690-701 12 p.

Research output: Contribution to journalArticle

Arc lamps
arc lamps
plasma jets
Heat flux
heat flux
12 Citations (Scopus)

A branch of energetic-particle driven geodesic acoustic modes due to magnetic drift resonance

Sasaki, M., Kasuya, N., Itoh, K., Hallatschek, K., Lesur, M., Kosuga, Y. & Itoh, S., Oct 1 2016, In : Physics of Plasmas. 23, 10, 102501.

Research output: Contribution to journalArticle

energetic particles
acoustics
heating
ions
eigenvectors
10 Citations (Scopus)

Abrupt onset of tongue deformation and phase space response of ions in magnetically-confined plasmas

Ida, K., Kobayashi, T., Itoh, K., Yoshinuma, M., Tokuzawa, T., Akiyama, T., Moon, C., Tsuchiya, H., Inagaki, S. & Itoh, S. I., Oct 31 2016, In : Scientific reports. 6, 36217.

Research output: Contribution to journalArticle

tongue
ions
Boltzmann distribution
symmetry
routes
2 Citations (Scopus)

A calibration of setting of mach probes by observing GAM oscillations

Itoh, K., Zhao, K., Dong, J., Itoh, S., fujisawa, A., Shigeru, I., Sasaki, M., Nagashima, Y., Kosuga, Y., Cheng, J. & Kobayashi, T., Jan 1 2016, In : Plasma and Fusion Research. 11, 1402002.

Research output: Contribution to journalArticle

interference
Mach number
perturbation
oscillations
probes
3 Citations (Scopus)

Accessibility to a two-dimensionally steep structure of the electric field in tokamak H-mode

Kasuya, N. & Itoh, K., May 1 2006, In : Plasma Physics and Controlled Fusion. 48, 5 A, p. A319-A326

Research output: Contribution to journalArticle

Electric fields
Plasmas
toroidal plasmas
electric fields
flux (rate)
1 Citation (Scopus)

A Change of H-Mode Dynamics due to Edge Electric Field Shear

Toda, S. & Itoh, S., Jan 1 1996, In : journal of the physical society of japan. 65, 5, p. 1284-1289 6 p.

Research output: Contribution to journalArticle

shear
electric fields
oscillations
high temperature plasmas
dynamic models
6 Citations (Scopus)

A compact neutron counter telescope with thick radiator (COTETRA) for fusion experiments

Osakabe, M., Itoh, S., Gotoh, Y., Sasao, M. & Fujita, J., Dec 1 1994, In : Review of Scientific Instruments. 65, 5, p. 1636-1643 8 p.

Research output: Contribution to journalArticle

neutron counters
Radiators
radiators
Telescopes
Neutrons
37 Citations (Scopus)

A Concept of Cross-Ferroic Plasma Turbulence

Shigeru, I., Kobayashi, T., Kosuga, Y., Itoh, S., Mitsuzono, T., Nagashima, Y., Arakawa, H., Yamada, T., Miwa, Y., Kasuya, N., Sasaki, M., Lesur, M., fujisawa, A. & Itoh, K., Feb 26 2016, In : Scientific reports. 6, 22189.

Research output: Contribution to journalArticle

plasma turbulence
turbulence
scalars
nonequilibrium plasmas
gradients
11 Citations (Scopus)
saddle points
Dislocations (crystals)
Activation energy
activation energy
Point defects
3 Citations (Scopus)

Active particle control experiments and critical particle flux discriminating between the wall pumping and fuelling in the compact plasma wall interaction device CPD spherical tokamak

Zushi, H., Hirooka, Y., Bhattacharyay, R., Sakamoto, M., Nakashima, Y., Yoshinaga, T., Higashizono, Y., Hanada, K., Nishino, N., Yoshida, N., Tokunaga, K., Kado, S., Shikama, T., Kawasaki, S., Okamoto, K., Miyazaki, T., Honma, H., Sato, K. N., Nakamura, K., Idei, H. & 3 others, Hasegawa, M., Nakashima, H. & Higashijima, A., Jul 6 2009, In : Nuclear Fusion. 49, 5, 055020.

Research output: Contribution to journalArticle

refueling
flux (rate)
pumping
recycling
interactions
27 Citations (Scopus)

Active trajectory control for a heavy ion beam probe on the compact helical system

Fujisawa, A., Iguchi, H., Lee, S., Crowley, T. P., Hamada, Y., Hidekuma, S. & Kojima, M., Sep 1996, In : Review of Scientific Instruments. 67, 9, p. 3099-3107 9 p.

Research output: Contribution to journalArticle

trajectory control
Heavy ions
Ion beams
heavy ions
ion beams
1 Citation (Scopus)

Adaptive-Array electron cyclotron emission diagnostics using data streaming in a software defined radio system

Idei, H., Mishra, K., Yamamoto, M. K., Hamasaki, M., fujisawa, A., Nagashima, Y., Hayashi, Y., Onchi, T., Hanada, K. & Zushi, H., Apr 14 2016, In : Journal of Instrumentation. 11, 4, C04010.

Research output: Contribution to journalArticle

Streaming Data
Radio systems
Cyclotrons
cyclotrons
Diagnostics
21 Citations (Scopus)

A method for detecting bearing wear in a drain pump utilizing an eddy-current displacement sensor

Yamaguchi, T., Iwai, Y., Shigeru, I. & Ueda, M., Apr 1 2003, In : Measurement: Journal of the International Measurement Confederation. 33, 3, p. 205-211 7 p.

Research output: Contribution to journalArticle

Bearings (structural)
Eddy currents
eddy currents
Wear of materials
Pumps
7 Citations (Scopus)

A mini-max principle for drift waves and mesoscale fluctuations

Itoh, S. & Itoh, K., Jan 1 2011, In : Plasma Physics and Controlled Fusion. 53, 1, 015008.

Research output: Contribution to journalArticle

Lyapunov functions
Free energy
Liapunov functions
free energy
Hot Temperature
18 Citations (Scopus)

A model of giant ELMs

Itoh, S., Itoh, K., Fukuyama, A. & Yagi, M., Dec 1 1996, In : Plasma Physics and Controlled Fusion. 38, 4, p. 527-549 23 p.

Research output: Contribution to journalArticle

Pressure gradient
pressure gradients
ballooning modes
propagation velocity
power supplies
4 Citations (Scopus)

Analysis of current diffusive ballooning mode including kinetic effects

Uchida, M., Fukuyama, A., Itoh, K., Itoh, S. & Yagi, M., Dec 1 2002, In : Plasma Physics and Controlled Fusion. 44, 12, p. 2495-2511 17 p.

Research output: Contribution to journalArticle

ballooning modes
Magnetohydrodynamics
Larmor radius
Stabilization
transport properties
5 Citations (Scopus)

Analysis of higher harmonics on bidirectional heat pulse propagation experiment in helical and tokamak plasmas

Kobayashi, T., Ida, K., Shigeru, I., Tsuchiya, H., Tamura, N., Choe, G. H., Yun, G. S., Park, H. K., Ko, W. H., Evans, T. E., Austin, M. E., Shafer, M. W., Ono, M., López-bruna, D., Ochando, M. A., Estrada, T., Hidalgo, C., Moon, C., Igami, H., Yoshimura, Y. & 3 others, Tsujimura, T. I., Itoh, S. & Itoh, K., May 17 2017, In : Nuclear Fusion. 57, 7, 076013.

Research output: Contribution to journalArticle

transport properties
harmonics
heat
propagation
electron cyclotron resonance
1 Citation (Scopus)

Analysis of ion-temperature-gradient instabilities using a gyro-fluid model in cylindrical plasmas

Hattori, G., Kasuya, N. & Yagi, M., Jan 1 2015, In : Plasma and Fusion Research. 10, 3401060.

Research output: Contribution to journalArticle

cylindrical plasmas
ion temperature
temperature gradients
fluids
Larmor radius
13 Citations (Scopus)

Analysis of optimal feedback control of vertical plasma position in a tokamak system

Moriyama, S. I., Nakamura, K., Nakamura, Y. & Itoh, S., Jan 1 1985, In : Japanese Journal of Applied Physics. 24, 7 R, p. 849-855 7 p.

Research output: Contribution to journalArticle

feedback control
Feedback control
power supplies
Plasmas
optimal control
1 Citation (Scopus)

Analysis of plasma equilibrium based on orbit-driven current density profile in steady-state plasma on QUEST

Nakamura, K., Alam, M. M., Jiang, Y. Z., Mitarai, O., Kurihara, K., Kawamata, Y., Sueoka, M., Takechi, M., Hasegawa, M., Tokunaga, K., Araki, K., Zushi, H., Hanada, K., fujisawa, A., Idei, H., Nagashima, Y., Kawasaki, S., Nakashima, H., Higashijima, A., Nagata, T. & 1 others, Fukuyama, A., Jan 1 2016, In : Fusion Engineering and Design. 109-111, p. 1528-1533 6 p.

Research output: Contribution to journalArticle

Orbits
Current density
Plasmas
Hamiltonians
MATLAB
16 Citations (Scopus)

Analysis of PWI footprint traces and material damage on the first walls of the spherical tokamak QUEST

Sharma, S. K., Zushi, H., Yoshida, N., Watanabe, H., Osakabe, M., Takeri, Y., Hasegawa, M., Tanabe, T., Tokunaga, K., Hanada, K., Idei, H., Sakamoto, M., Nakamura, K., fujisawa, A., Ishiguro, M. & Tashima, S., Jan 1 2012, In : Fusion Engineering and Design. 87, 1, p. 77-86 10 p.

Research output: Contribution to journalArticle

Beam plasma interactions
Plasmas
Melting
Tungsten
Electron cyclotron resonance
25 Citations (Scopus)

Analysis of the current-diffusive ballooning mode

Yagi, M., Itoh, K., Itoh, S., Fukuyama, A. & Azumi, M., Jan 1 1993, In : Physics of Fluids B. 5, 10, p. 3702-3711 10 p.

Research output: Contribution to journalArticle

ballooning modes
Thermal conductivity
thermal conductivity
Viscosity
viscosity
4 Citations (Scopus)

Analysis of the footprint traces on the first walls of the compact plasma wall interaction device (CPD) using surface analysis and electron orbit calculations

Sharma, S. K., Zushi, H., Osakabe, M., Takeiri, Y., Yoshida, N., Hasegava, M., Yoshinaga, T., Hanada, K., Idei, H., Sakamoto, M., Nakamura, K. & Sato, K. N., Jan 29 2010, In : Nuclear Fusion. 50, 2, 025017.

Research output: Contribution to journalArticle

orbit calculation
footprints
magnetic fields
impurities
magnetic field configurations
1 Citation (Scopus)

Analysis of the thermal activation of high-mobility dislocation loops

Ohsawa, K. & Kuramoto, E., Mar 1 2005, In : Materials Transactions. 46, 3, p. 457-462 6 p.

Research output: Contribution to journalArticle

Dislocations (crystals)
Activation energy
Chemical activation
activation
Point defects

Analysis on Anomalous Conductivity and Heat Pulse Propagation in Tokamak

Yamaguchi, H. & Itoh, S. I., Jan 1 1995, In : Journal of the Physical Society of Japan. 64, 4, p. 1051-1054 4 p.

Research output: Contribution to journalArticle

heat
conductivity
propagation
temperature gradients
pulses
2 Citations (Scopus)

Analysis on precipitation behavior of reduced activation ferritic/martensitic steels with extraction residue tests

Nagasaka, T., Hishinuma, Y., Muroga, T., Watanabe, H., Sakasegawa, H., Tanigawa, H. & Ando, M., Oct 1 2013, In : Fusion Engineering and Design. 88, 9-10, p. 2565-2568 4 p.

Research output: Contribution to journalArticle

Martensitic steel
Ferritic steel
Creep
Chemical activation
Precipitates
4 Citations (Scopus)

Analytical solution of high βp equilibria with natural inboard poloidal null configuration obtained in the spherical tokamak QUEST

QUEST Team, Jan 1 2014, In : Plasma and Fusion Research. 9, SpecialIssue2, 3402093.

Research output: Contribution to journalArticle

safety factors
diamagnetism
configurations
vessels
vacuum
2 Citations (Scopus)

Analytic solutions of the two-dimensional transport equation in scrape-off-layer plasmas

Itoh, S., Yagi, M. & Itoh, K., Dec 1 1996, In : Plasma Physics and Controlled Fusion. 38, 2, p. 155-164 10 p.

Research output: Contribution to journalArticle

plasma layers
Thermal conductivity
Plasmas
heat
Scaling laws

An application of hadamard transform for plasma laser-induced fluorescence spectroscopy

Arakawa, H., Shigeru, I., Sasaki, M., Itoh, K. & Itoh, S., Jan 1 2015, In : Plasma and Fusion Research. 10, 1201085.

Research output: Contribution to journalArticle

laser induced fluorescence
signal to noise ratios
masks
spatial resolution
detectors
16 Citations (Scopus)

An assessment of limit cycle oscillation dynamics prior to L-H transition

Itoh, K., Itoh, S. I. & Fujisawa, A., Jan 1 2013, In : Plasma and Fusion Research. 8, 1102168.

Research output: Contribution to journalArticle

turbulence
oscillations
cycles
Reynolds stress
gradients
118 Citations (Scopus)

Anatomy of plasma turbulence

Yamada, T., Itoh, S. I., Maruta, T., Kasuya, N., Nagashima, Y., Shinohara, S., Terasaka, K., Yagi, M., Inagaki, S., Kawai, Y., Fujisawa, A. & Itoh, K., Sep 2008, In : Nature Physics. 4, 9, p. 721-725 5 p.

Research output: Contribution to journalArticle

plasma turbulence
anatomy
turbulence
bunching
locking

A new fast-rise kicker magnet system by a waveform correction method using auxiliary magnets and a three bump orbit correction method

Nakamura, E., Sakai, Y., Sakai, I., Takayama, M., Yabukami, S., Ishi, Y., Uesugi, T., Nakamura, T., Nakao, Y. & Shigeru, I., Feb 11 2011, In : Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 665, p. 19-24 6 p.

Research output: Contribution to journalArticle

Magnets
waveforms
Orbits
magnets
orbits
9 Citations (Scopus)

Anisotropic radiation damage by charge exchange neutrals under tokamak discharges in TRIAM-1M

Hirai, T., Fujiwara, T., Tokunaga, K., Yoshida, N. & Itoh, S., Jan 1 2001, In : Journal of Nuclear Materials. 290-293, p. 94-98 5 p.

Research output: Contribution to journalArticle

Radiation damage
radiation damage
charge exchange
Trapped ions
Plasmas
22 Citations (Scopus)

Anomalous ion temperature and plasma resistance due to mhd fluctuations in repute-1 reversed field pinch plasmas

fujisawa, A., Ji, H., Yamagishi, K., Shinohara, S., Toyama, H. & Miyamoto, K., Jan 1 1991, In : Nuclear Fusion. 31, 8, p. 1443-1453 11 p.

Research output: Contribution to journalArticle

plasma pinch
ion temperature
profiles
electron energy
temperature profiles

A parameter that denotes non-equilibrium property for turbulent plasmas

Itoh, K. & Itoh, S., Jan 1 2015, In : Plasma and Fusion Research. 10, 3401027.

Research output: Contribution to journalArticle

turbulence
heating
causes
12 Citations (Scopus)

A plasma shape identification with magnetic analysis for the real-time control on QUEST

Hasegawa, M., Nakamura, K., Tokunaga, K., Zushi, H., Hanada, K., fujisawa, A., Idei, H., Kawasaki, S., Nakashima, H. & Higashijima, A., Oct 5 2012, In : IEEJ Transactions on Fundamentals and Materials. 132, 7

Research output: Contribution to journalArticle

Real time control
Plasmas
Elongation
2 Citations (Scopus)

Application of tritium tracer techniques to observation of hydrogen on surface and in bulk of F82H

Otsuka, T., Tanabe, T., Tokunaga, K., Yoshida, N., Ezato, K., Suzuki, S. & Akiba, M., Oct 1 2011, In : Journal of Nuclear Materials. 417, 1-3, p. 1135-1138 4 p.

Research output: Contribution to journalArticle

Radioactive tracers
Tritium
tritium
tracers
Hydrogen
5 Citations (Scopus)

Approaches to hysteresis of transport relations in toroidal plasmas

Itoh, S., Shigeru, I., Dong, J. & Itoh, K., Jan 1 2016, In : Plasma and Fusion Research. 11, 1, 2503086.

Research output: Contribution to journalArticle

toroidal plasmas
hysteresis
turbulence
modulation
heat
4 Citations (Scopus)
proposals
Plasmas
Bessel functions
expansion
structural analysis
4 Citations (Scopus)

A prototype diagnostics system to detect ultraviolet emission for plasma turbulence

Onchi, T., Fujisawa, A. & Sanpei, A., Nov 1 2014, In : Review of Scientific Instruments. 85, 11, 113502.

Research output: Contribution to journalArticle

Plasma turbulence
plasma turbulence
ultraviolet emission
prototypes
Plasma devices
2 Citations (Scopus)

APTWG: The 5th Asia-Pacific Transport Working Group Meeting

Gao, X., Ghim, Y. C., Sun, Y. W., Gao, Z., Shigeru, I., Chen, W., Zhang, T. & Wang, Z. X., Feb 8 2016, In : Nuclear Fusion. 56, 3, 037001.

Research output: Contribution to journalArticle

turbulence
momentum
energetic particles
China
topology
5 Citations (Scopus)

APTWG: The 4th Asia-Pacific Transport Working Group Meeting

Ida, K., Kwon, J. M., Leconte, M., Ko, W. H., Shigeru, I., Todo, Y. & Kosuga, Y., Jan 1 2015, In : Nuclear Fusion. 55, 1, 017001.

Research output: Contribution to journalArticle

turbulence
energetic particles
Japan
topology
retarding
2 Citations (Scopus)

A quantitative model for heat pulse propagation across large helical device plasmas

Zhu, H., Dendy, R. O., Chapman, S. C. & Inagaki, S., Jun 1 2015, In : Physics of Plasmas. 22, 6, 062308.

Research output: Contribution to journalArticle

heat
propagation
pulses
controlled fusion
electron energy
5 Citations (Scopus)

A rotating coil probe for the magnetic field measurement on a long pulsed tokamak

Fujita, J., Matsuura, K., Kawahata, K., Fujiwaka, S., Itoh, S., Sato, K. N., Nakamura, K., Zushi, H., Sakamoto, M., Hanada, K., Jotaki, E. & Makino, K., Jan 1 1999, In : Review of Scientific Instruments. 70, 1 II, p. 445-448 4 p.

Research output: Contribution to journalArticle

Magnetic field measurement
coils
probes
magnetic probes
magnetic fields
14 Citations (Scopus)

A sawtooth model based on the transport catastrophe

Itoh, K., Itoh, S. & Fukuyama, A., Dec 1 1995, In : Plasma Physics and Controlled Fusion. 37, 11, p. 1287-1297 11 p., 008.

Research output: Contribution to journalArticle

Pressure gradient
Electrons
Ions
profiles
pressure gradients
5 Citations (Scopus)

A simple model for electron dissipation in trapped ion turbulence

Lesur, M., Cartier-Michaud, T., Drouot, T., Diamond, P. H., Kosuga, Y., Réveillé, T., Gravier, E., Garbet, X., Itoh, S. & Itoh, K., Jan 1 2017, In : Physics of Plasmas. 24, 1, 012511.

Research output: Contribution to journalArticle

dissipation
turbulence
flux (rate)
ions
electrons
7 Citations (Scopus)

A structural bifurcation of transport in toroidal plasmas

Itoh, K. & Itoh, S. I., Feb 19 2016, In : Plasma Physics and Controlled Fusion. 58, 4, 045017.

Research output: Contribution to journalArticle

toroidal plasmas
Electric fields
Plasmas
electric fields
curvature