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Research Output 1988 2019

2019

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

A study on smoothed particle hydrodynamics for liquid metal flow simulation

Salami, J. A., Hu, C. & Hanada, K., Sep 2019, In : Evergreen. 6, 3, p. 190-199 10 p.

Research output: Contribution to journalArticle

Flow simulation
Liquid metals
physics
Hydrodynamics
Physics

Development of high power gyrotrons for advanced fusion devices

Kariya, T., Minami, R., Imai, T., Okada, M., Motoyoshi, F., Numakura, T., Nakashima, Y., Idei, H., Onchi, T., Hanada, K., Shimozuma, T., Yoshimura, Y., Takahashi, H., Kubo, S., Oda, Y., Ikeda, R., Sakamoto, K., Ono, M., Nagasaki, K., Eguchi, T. & 1 others, Mitsunaka, Y., Apr 26 2019, In : Nuclear Fusion. 59, 6, 066009.

Research output: Contribution to journalArticle

cyclotron resonance devices
fusion
radio frequencies
continuous radiation
output
2 Citations (Scopus)

Effect of carbon impurity reduction on hydrogen isotope retention in QUEST high temperature wall

Oya, Y., Sano, A., Sato, Y., Nakata, M., Zhou, Q., Togari, A., Yoshida, N. & Hanada, K., Sep 1 2019, In : Fusion Engineering and Design. 146, p. 1480-1484 5 p.

Research output: Contribution to journalArticle

Isotopes
Hydrogen
Carbon
Deuterium
Impurities
1 Citation (Scopus)

Estimation of fuel particle balance in steady state operation with hydrogen barrier model

Hanada, K., Yoshida, N., Takagi, I., Hirata, T., Hatayama, A., Okamoto, K., Oya, Y., Shikama, T., Wang, Z., Long, H., Huang, C., Oya, M., Idei, H., Nagashima, Y., Onchi, T., Hasegawa, M., Nakamura, K., Zushi, H., Kuroda, K., Kawasaki, S. & 10 others, Higashijima, A., Nagata, T., Shimabukuro, S., Takase, Y., Murakami, S., Gao, X., Liu, H., Qian, J., Raman, R. & Ono, M., May 1 2019, In : Nuclear Materials and Energy. 19, p. 544-549 6 p.

Research output: Contribution to journalArticle

Open Access
Hydrogen
hydrogen
Plasmas
Carrier concentration
Metals

HFS injection of X-mode for EBW conversion in QUEST

Elserafy, H., Hanada, K., Kuroda, K., Idei, H., Yoneda, R., Huang, C., Kojima, S., Hasegawa, M., Nagashima, Y., Onchi, T., Ikezoe, R., Higashijima, A., Nagata, T., Kawasaki, S., Shimabukuro, S., Bertelli, N. & Ono, M., Jan 1 2019, In : Plasma and Fusion Research. 14, 1, 1205038.

Research output: Contribution to journalArticle

injection
electrons
plasma heating
plasma currents
vessels

High voltage electrical system of 8.56 GHz CW klystron for electron cyclotron heating on QUEST spherical tokamak

Onchi, T., Idei, H., Nakamura, K., Nagata, T., Kawasaki, S., Ashida, R., Fukuyama, M., Hasegawa, M., Ikezoe, R., Higashijima, A., Kuroda, K., Nagashima, Y. & Hanada, K., Sep 1 2019, In : Fusion Engineering and Design. 146, p. 2567-2570 4 p.

Research output: Contribution to journalArticle

Cyclotrons
Insulated gate bipolar transistors (IGBT)
Heating
Electrons
Electric potential

Plasma equilibrium based on EC-driven current profile with toroidal rotation on QUEST

Nakamura, K., Alam, M. M., Jiang, Y. Z., Mitarai, O., Takechi, M., Hasegawa, M., Tokunaga, K., Hanada, K., Idei, H., Nagashima, Y., Onchi, T., Kuroda, K., Watanabe, O., Higashijima, A., Nagata, T., Shimabukuro, S., Kawasaki, S. & Fukuyama, A., Sep 1 2019, In : Fusion Engineering and Design. 146, p. 2628-2631 4 p.

Research output: Contribution to journalArticle

Plasmas
Current density
Fluxes
2018
3 Citations (Scopus)

Effect of heating temperature on tritium retention in stainless steel type 316 L

Matsuyama, M., Zushi, H., Tokunaga, K., Kuzmin, A. & Hanada, K., Aug 1 2018, In : Nuclear Materials and Energy. 16, p. 52-59 8 p.

Research output: Contribution to journalArticle

Tritium
Stainless Steel
tritium
stainless steels
Stainless steel

Effect of magnetic shear on edge turbulence in SOL-like open field line configuration in QUEST

Banerjee, S., Zushi, H., Nishino, N., Hanada, K., Idei, H., Nakamura, K., Hasegawa, M., fujisawa, A., Nagashima, Y., Mishra, K., Tashima, S., Onchi, T., Kuzmin, A. & Matsuoka, K., Jun 28 2018, In : Plasma Physics and Controlled Fusion. 60, 8, 085014.

Research output: Contribution to journalArticle

Turbulence
turbulence
Magnetic fields
shear
Plasmas
1 Citation (Scopus)

High-field-side RF injection for excitation of electron Bernstein waves

Yoneda, R., Hanada, K., Elserafy, H., Bertelli, N. & Ono, M., Jan 1 2018, In : Plasma and Fusion Research. 13, 3402115.

Research output: Contribution to journalArticle

Open Access
injection
excitation
heating
electrons
shift
3 Citations (Scopus)

Initial results from solenoid-free plasma start-up using Transient CHI on QUEST

Kuroda, K., Raman, R., Hanada, K., Hasegawa, M., Onchi, T., Ono, M., Nelson, B. A., Jarboe, T. R., Nagata, M., Mitarai, O., Nakamura, K., Idei, H., Rogers, J., Kawasaki, S., Nagata, T., Kuzmin, A., Kojima, S., Huang, C., Watanabe, O., Higashijima, A. & 3 others, Takase, Y., Fukuyama, A. & Murakami, S., Sep 14 2018, In : Plasma Physics and Controlled Fusion. 60, 11, 115001.

Research output: Contribution to journalArticle

Solenoids
solenoids
injection
Plasmas
Electrodes
2 Citations (Scopus)

Modelling of plasma and its wall interaction for long-term tokamak operation

Okamoto, K., Tatsumi, R., Abe, K., Hatayama, A. & Hanada, K., Jul 1 2018, In : Contributions to Plasma Physics. 58, 6-8, p. 602-607 6 p.

Research output: Contribution to journalArticle

interactions
atoms
plasma interactions
hydrogen plasma
power plants
2 Citations (Scopus)

Modification of plasma control system and hot-wall temperature control system for long-duration plasma sustainment in QUEST

Hasegawa, M., Nakamura, K., Hanada, K., Kawasaki, S., Kuzmin, A., Idei, H., Tokunaga, K., Nagashima, Y., Onchi, T., Kuroda, K., Watanabe, O., Higashijima, A. & Nagata, T., Apr 1 2018, In : Fusion Engineering and Design. 129, p. 202-206 5 p.

Research output: Contribution to journalArticle

Temperature control
Plasmas
Control systems
Facings
Cooling systems
1 Citation (Scopus)

Spectroscopic measurements of impurity ion toroidal and poloidal flow velocities and their dependence on vertical magnetic field in QUEST toroidal ECR plasmas

Yoneda, N., Shikama, T., Zushi, H., Hanada, K., Fujikawa, A., Onchi, T., Kuroda, K., Nii, K., Hasuo, M., Hasegawa, M., Idei, H., Nakamura, K., Nagashima, Y., Higashijima, A. & Nagata, T., Jan 1 2018, In : Plasma and Fusion Research. 13, 3402087.

Research output: Contribution to journalArticle

Open Access
electron cyclotron resonance
flow velocity
impurities
magnetic fields
ions

TSC simulation of transient CHI in new electrode configuration on QUEST

Kuroda, K., Raman, R., Jardin, S. C., Ono, M. & Hanada, K., Jan 1 2018, In : Plasma and Fusion Research. 13, 3402059.

Research output: Contribution to journalArticle

Open Access
injectors
injection
electrodes
configurations
coils
2017
2 Citations (Scopus)

An efficient technique for magnetic equilibrium reconstruction with q profile constraints and its application on the EAST tokamak

Qian, J. P., Lao, L. L., Holcomb, C. T., Wan, B. N., Sun, Y. W., Moreau, D., Li, E., Zeng, L., Hanada, K., Garofalo, A. M., Gong, X. Z., Shen, B. & Xiao, B. J., Jun 13 2017, In : Nuclear Fusion. 57, 8, 084001.

Research output: Contribution to journalArticle

plasma equilibrium
profiles
magnetic measurement
shear
probes
7 Citations (Scopus)

Current start-up using the new CHI system

Kuroda, K., Raman, R., Hanada, K., Hasegawa, M., Onchi, T., Ono, M., Jaboe, T., Nelson, B. A., Nagata, M., Mitarai, O., Nakamura, K., Idei, H., Rogers, J., Kawasaki, S., Nagata, T., Kuzmin, A., Kojima, S., Watanabe, O., Higashijima, A., Takase, Y. & 1 others, Fukuyama, A., Jan 1 2017, In : Plasma and Fusion Research. 12, 1202020.

Research output: Contribution to journalArticle

injection
magnetic flux
breakdown
gases
6 Citations (Scopus)

Development of over-MW gyrotrons for fusion at 14 GHz to sub-THz frequencies

Kariya, T., Imai, T., Minami, R., Sakamoto, K., Oda, Y., Ikeda, R., Shimozuma, T., Kubo, S., Idei, H., Numakura, T., Tsumura, K., Ebashi, Y., Okada, M., Nakashima, Y., Yoshimura, Y., Takahashi, H., Ito, S., Hanada, K., Nagasaki, K., Ono, M. & 2 others, Eguchi, T. & Mitsunaka, Y., Apr 11 2017, In : Nuclear Fusion. 57, 6, 066001.

Research output: Contribution to journalArticle

cyclotron resonance devices
fusion
output
oscillations
tubes
13 Citations (Scopus)

EAST equilibrium current profile reconstruction using polarimeter-interferometer internal measurement constraints

Qian, J. P., Lao, L. L., Liu, H. Q., Ding, W. X., Zeng, L., Luo, Z. P., Ren, Q. L., Huang, Y., Huang, J., Brower, D. L., Hanada, K., Chen, D. L., Sun, Y. W., Shen, B., Gong, X. Z., Xiao, B. J. & Wan, B. N., Mar 1 2017, In : Nuclear Fusion. 57, 3, 036008.

Research output: Contribution to journalArticle

polarimeters
interferometers
Faraday effect
profiles
current density
3 Citations (Scopus)

Effect of magnetic structure on RF-induced breakdown in QUEST

Yoneda, R., Hanada, K., Nakamura, K., Idei, H., Yoshida, N., Hasegawa, M., Onchi, T., Kuroda, K., Kawasaki, S., Higashijima, A., Nagata, T., Isayama, A., Mitarai, O., Fukuyama, A. & Takase, Y., Jun 1 2017, In : Physics of Plasmas. 24, 6, 062513.

Research output: Contribution to journalArticle

radio frequencies
breakdown
life (durability)
electrons
thresholds

Erratum: Current Start-Up Using the New CHI System [Plasma Fusion Res., 12, (2017) (1202020)] DOI: 10.1585/pfr.12.1202020

Kuroda, K., Raman, R., Hanada, K., Hasegawa, M., Onchi, T., Ono, M., Jarboe, T. R., Nelson, B. A., Nagata, M., Mitarai, O., Nakamura, K., Idei, H., Rogers, J., Kawasaki, S., Nagata, T., Kuzmin, A., Kojima, S., Watanabe, O., Higashijima, A., Takase, Y. & 1 others, Fukuyama, A., Jan 1 2017, In : Plasma and Fusion Research. 12, 1902026.

Research output: Contribution to journalComment/debate

Open Access
lists
fusion
11 Citations (Scopus)

Fully non-inductive second harmonic electron cyclotron plasma ramp-up in the QUEST spherical tokamak

Idei, H., Kariya, T., Imai, T., Mishra, K., Onchi, T., Watanabe, O., Zushi, H., Hanada, K., Qian, J., Ejiri, A., Alam, M. M., Nakamura, K., fujisawa, A., Nagashima, Y., Hasegawa, M., Matsuoka, K., Fukuyama, A., Kubo, S., Shimozuma, T., Yoshikawa, M. & 8 others, Sakamoto, M., Kawasaki, S., Nakashima, H., Higashijima, A., Ide, S., Maekawa, T., Takase, Y. & Toi, K., Oct 5 2017, In : Nuclear Fusion. 57, 12, 126045.

Research output: Contribution to journalArticle

plasma currents
ramps
cyclotrons
harmonics
electrons
1 Citation (Scopus)

Hydrogen permeation through sputter-deposited tungsten coated F82H in QUEST

the QUEST group 2, Jan 1 2017, In : Plasma and Fusion Research. 12, 1305038.

Research output: Contribution to journalArticle

hydrogen plasma
tungsten
hydrogen
membranes
coatings
7 Citations (Scopus)

Investigation of hydrogen recycling in long-duration discharges and its modification with a hot wall in the spherical tokamak QUEST

Hanada, K., Yoshida, N., Honda, T., Wang, Z., Kuzmin, A., Takagi, I., Hirata, T., Oya, Y., Miyamoto, M., Zushi, H., Hasegawa, M., Nakamura, K., fujisawa, A., Idei, H., Nagashima, Y., Watanabe, O., Onchi, T., Kuroda, K., Long, H., Watanabe, H. & 7 others, Tokunaga, K., Higashijima, A., Kawasaki, S., Nagata, T., Takase, Y., Fukuyama, A. & Mitarai, O., Oct 26 2017, In : Nuclear Fusion. 57, 12, 126061.

Research output: Contribution to journalArticle

recycling
hydrogen
wall temperature
hydrogen fuels
maintenance
14 Citations (Scopus)

Key issues for long-pulse high-β N operation with the Experimental Advanced Superconducting Tokamak (EAST)

Gao, X., Yang, Y., Zhang, T., Liu, H., Li, G., Ming, T., Liu, Z., Wang, Y., Zeng, L., Han, X., Liu, Y., Wu, M., Qu, H., Shen, B., Zang, Q., Yu, Y., Kong, D., Gao, W., Zhang, L., Cai, H. & 11 others, Wu, X., Hanada, K., Zhong, F., Liang, Y., Hu, C., Liu, F., Gong, X., Xiao, B., Wan, B., Zhang, X. & Li, J., Mar 24 2017, In : Nuclear Fusion. 57, 5, 056021.

Research output: Contribution to journalArticle

pulses
plasma jets
maintenance
vessels
impurities
3 Citations (Scopus)

Measurement of thickness of film deposited on the plasma-facing wall in the QUEST tokamak by colorimetry

Wang, Z., Hanada, K., Yoshida, N., Shimoji, T., Miyamoto, M., Oya, Y., Zushi, H., Idei, H., Nakamura, K., fujisawa, A., Nagashima, Y., Hasegawa, M., Kawasaki, S., Higashijima, A., Nakashima, H., Nagata, T., Kawaguchi, A., Fujiwara, T., Araki, K., Mitarai, O. & 3 others, Fukuyama, A., Takase, Y. & Matsumoto, K., Sep 1 2017, In : Review of Scientific Instruments. 88, 9, 093502.

Research output: Contribution to journalArticle

colorimetry
Colorimetry
Facings
Plasmas
radioactive materials
2 Citations (Scopus)

Overview of spherical tokamak research in Japan

Takase, Y., Ejiri, A., Fujita, T., Fukumoto, N., Fukuyama, A., Hanada, K., Idei, H., Nagata, M., Ono, Y., Tanaka, H., Uchida, M., Horiuchi, R., Kamada, Y., Kasahara, H., Masuzaki, S., Nagayama, Y., Oishi, T., Saito, K., Takeiri, Y. & Tsuji-Iio, S., Jun 20 2017, In : Nuclear Fusion. 57, 10, 102005.

Research output: Contribution to journalReview article

plasma currents
Japan
injection
toroids
refueling

Plasma equilibrium based on RF-driven current profile without assuming nested magnetic surfaces 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., Nov 1 2017, In : Fusion Engineering and Design. 123, p. 532-534 3 p.

Research output: Contribution to journalArticle

Plasmas
Orbits
Hamiltonians
MATLAB
Current density
1 Citation (Scopus)

Preliminary study on heat load using calorimetric measurement during long-pulse high-performance discharges on EAST

Liu, Y. K., Hamada, N., Hanada, K., Gao, X., Liu, H. Q., Yu, Y. W., Qian, J. P., Yang, L., Xu, T. J., Jie, Y. X., Yao, Y., Wang, S. S., Xu, J. C., Yang, Z. D. & Li, G. S., Mar 6 2017, In : Plasma Physics and Controlled Fusion. 59, 4, 045009.

Research output: Contribution to journalArticle

Thermal load
Plasmas
heat
pulses
Langmuir probes
4 Citations (Scopus)

Spatial distribution of atomic and ion hydrogen flux and its effect on hydrogen recycling in long duration confined and non-confined plasmas

Kuzmin, A., Zushi, H., Takagi, I., Sharma, S. K., Kobayashi, M., Hirooka, Y., Onchi, T., Hanada, K., Yoshida, N., Nakamura, K., Fujisawa, A., Idei, H., Nagashima, Y., Hasegawa, M., Mutoh, T., Mishra, K. & Ohwada, H., Aug 2017, In : Nuclear Materials and Energy. 12, p. 627-632 6 p.

Research output: Contribution to journalArticle

hydrogen ions
recycling
Spatial distribution
Protons
Recycling
2016
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
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
3 Citations (Scopus)

Comparative studies of inner and outer divertor discharges and a fueling study in QUEST

QUEST group, Jan 1 2016, In : Fusion Engineering and Design. 109-111, p. 1365-1370 6 p.

Research output: Contribution to journalArticle

Fueling
Plasmas
Inductance
Solenoids
Electrodes
2 Citations (Scopus)

Comparison of current density profiles based on particle orbit-driven current in steady-state plasma on QUEST

Alam, M. M., Nakamura, K., Xia, F., Mitarai, O., Hasegawa, M., Tokunaga, K., Araki, K., Zushi, H., Hanada, K., fujisawa, A., Idei, H., Nagashima, Y., Kawasaki, S., Nakashima, H., Higashijima, A. & Nagata, T., Jan 1 2016, In : Fusion Engineering and Design. 109-111, p. 1624-1630 7 p.

Research output: Contribution to journalArticle

Orbits
Current density
Plasmas
Cyclotrons
Electrons

Current density calculation from particle orbit in RF-driven divertor plasma on QUEST

Alam, M. M., Nakamura, K., Hasegawa, M., Tokunaga, K., Araki, K., Zushi, H., Hanada, K., fujisawa, A., Idei, H., Nagashima, Y., Kawasaki, S., Nakashima, H., Higashijima, A., Xia, F. & Mitarai, O., May 31 2016, 2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015. Institute of Electrical and Electronics Engineers Inc., 7482308. (Proceedings - Symposium on Fusion Engineering; vol. 2016-May).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Orbits
Current density
current density
orbits
Plasmas
4 Citations (Scopus)

Current status and prospect of plasma control system for steady-state operation on QUEST

Hasegawa, M., Nakamura, K., Zushi, H., Hanada, K., fujisawa, A., Tokunaga, K., Idei, H., Nagashima, Y., Kawasaki, S., Nakashima, H. & Higashijima, A., Nov 15 2016, In : Fusion Engineering and Design. 112, p. 699-702 4 p.

Research output: Contribution to journalArticle

Plasmas
Control systems
Fueling
Low pass filters
Digital filters

Development of 28/35 GHz dual-frequency gyrotron for ECH study

Kariya, T., Imai, T., Minami, R., Tsumura, K., Ebashi, Y., Idei, H., Hanada, K., Ono, M., Komurasaki, K., Numakura, T., Endo, Y. & Nakashima, Y., Oct 11 2016, Open Magnetic Systems for Plasma Confinement, OS 2016: Proceedings of the 11th International Conference on Open Magnetic Systems for Plasma Confinement. Arakcheev, A. & Sudnikov, A. (eds.). American Institute of Physics Inc., 030020. (AIP Conference Proceedings; vol. 1771).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

output
power supplies
sapphire
oscillations
pulses
1 Citation (Scopus)

Guiding Center Orbit Calculation for Evaluating the Current Density Distributions of the Electrons in Electron Cyclotron Heating on QUEST

Alam, M. M., Nakamura, K., Idei, H., Hasegawa, M., Tokunaga, K., Araki, K., Hanada, K., Fujisawa, A., Nagashima, Y., Kawasaki, S., Nakashima, H., Higashijima, A., Xia, F. & Mitarai, O., Sep 2016, In : IEEE Transactions on Plasma Science. 44, 9, p. 1666-1671 6 p., 7482769.

Research output: Contribution to journalArticle

orbit calculation
electron cyclotron heating
density distribution
current density
electrons
3 Citations (Scopus)

Hydrogen flux measurements with permeation probes in spherical tokamak QUEST

Kuzmin, A., Zushi, H., Takagi, I., Sharma, S. K., Hirooka, Y., Kobayashi, M., Sakamoto, M., Hanada, K., Onchi, T., Oyama, Y., Youshida, N., Nakamura, K., fujisawa, A., Idei, H., Nagashima, Y., Hasegawa, M. & Mishra, K., Jul 1 2016, In : Vacuum. 129, p. 178-182 5 p.

Research output: Contribution to journalArticle

Permeation
Hydrogen
Fluxes
probes
hydrogen
18 Citations (Scopus)

Internal magnetic field measurements by laser-based POlarimeter-INTerferometer (POINT) system on EAST

Liu, H. Q., Jie, Y. X., Ding, W. X., Brower, D. L., Zou, Z. Y., Qian, J. P., Li, W. M., Yang, Y., Zeng, L., Zhang, S. B., Lan, T., Wang, S. X., Hanada, K., Wei, X. C., Hu, L. Q. & Wan, B. N., Jan 20 2016, In : Journal of Instrumentation. 11, 1, C01049.

Research output: Contribution to journalArticle

Magnetic field measurement
Polarimeter
Polarimeters
polarimeters
Interferometer

Multiple wall-reflection effect in adaptive-array differential-phase reflectometry on QUEST

Idei, H., Mishra, K., Yamamoto, M. K., fujisawa, A., Nagashima, Y., Hamasaki, M., Hayashi, Y., Onchi, T., Hanada, K. & Zushi, H., Jan 13 2016, In : Journal of Instrumentation. 11, 1, C01014.

Research output: Contribution to journalArticle

Reflectometry
Fast Fourier transform
Fast Fourier transforms
Derivatives
computer programs

Observation of an edge coherent mode and poloidal flow in the electron cyclotron wave induced high βp plasma in QUEST

Banerjee, S., Zushi, H., Nishino, N., Mishra, K., Mahira, Y., Tashima, S., Ejiri, A., Yamaguchi, T., Onchi, T., Nagashima, Y., Hanada, K., Nakamura, K., Idei, H., Hasegawa, M., fujisawa, A., Kuzmin, A. & Matsuoka, K., Aug 1 2016, In : Physics of Plasmas. 23, 8, 082507.

Research output: Contribution to journalArticle

cyclotrons
electrons
magnetohydrodynamic flow
configurations
turbulence
2 Citations (Scopus)

Origin and Evolution of Spontaneous Rotation in Plasma under Different Magnetic Field Geometries in Tokamak QUEST

QUEST Team, Apr 1 2016, In : IEEE Transactions on Plasma Science. 44, 4, p. 441-447 7 p., 7416222.

Research output: Contribution to journalArticle

magnetic field configurations
geometry
magnetic fields
electron cyclotron resonance
plasma currents
9 Citations (Scopus)

Power Balance Estimation in Long Duration Discharges on QUEST

Hanada, K., Zushi, H., Idei, H., Nakamura, K., Ishiguro, M., Tashima, S., Kalinnikova, E. I., Nagashima, Y., Hasegawa, M., fujisawa, A., Higashijima, A., Kawasaki, S., Nakashima, H., Mitarai, O., Fukuyama, A., Takase, Y., Gao, X., Liu, H., Qian, J., Ono, M. & 1 others, Raman, R., Nov 1 2016, In : Plasma Science and Technology. 18, 11, p. 1069-1075 7 p.

Research output: Contribution to journalArticle

water temperature
configurations
vessels
orbits
cooling
1 Citation (Scopus)

Response of the far scrape-off layer plasma to strong gas puffing in the high poloidal beta configuration of the QUEST spherical tokamak

Onchi, T., Zushi, H., Mishra, K., Oyama, Y., Nagashima, Y., Hanada, K., Idei, H., Hasegawa, M., Kuzmin, A., Miura, H., Nakamura, K., fujisawa, A. & Nagaoka, K., Sep 15 2016, In : Plasma Physics and Controlled Fusion. 58, 11, 115004.

Research output: Contribution to journalArticle

plasma layers
Plasmas
configurations
Gases
gases
2015
8 Citations (Scopus)

Algorithm validation of the current profile reconstruction of EAST based on polarimeter/interferometer

Qian, J., Lao, L. L., Ren, Q., Wan, B., Liu, H., Zeng, L., Luo, Z., Hanada, K., Chen, D., Shi, T., Sun, Y., Shen, B. & Xiao, B., Jan 1 2015, In : Plasma Science and Technology. 17, 1, p. 75-79 5 p.

Research output: Contribution to journalArticle

polarimeters
interferometers
profiles
safety factors
random errors
4 Citations (Scopus)

Comparison between non-inductive plasma current start-up using ECRH with and without fundamental resonance on QUEST

Miura, H., Hanada, K., Zushi, H., Nakamura, K., fujisawa, A., Idei, H., Nagashima, Y., Hasegawa, M., Nakashima, H., Kawasaki, S., Higashijima, A., Mitarai, O., Fukuyama, A. & Takase, Y., Jan 1 2015, In : Plasma and Fusion Research. 10, 3402066.

Research output: Contribution to journalArticle

plasma currents
electron cyclotron resonance
heating
electron energy
microwaves
3 Citations (Scopus)

Development of 28 GHz Gyrotron for Cooperative ECH Study

Kariya, T., Minami, R., Imai, T., Kato, T., Idei, H., Hanada, K., Zushi, H., Numakura, T., Endo, Y. & Ichimura, M., Jul 1 2015, In : Fusion Science and Technology. 68, 1, p. 147-151 5 p.

Research output: Contribution to journalArticle

electron cyclotron heating
Cyclotrons
Heating
Electrons
plasma currents
6 Citations (Scopus)

Development of a high-performance control system by decentralization with reflective memory on QUEST

Hasegawa, M., Nakamura, K., Zushi, H., Hanada, K., fujisawa, A., Mitarai, O., Tokunaga, K., Idei, H., Nagashima, Y., Kawasaki, S., Nakashima, H. & Higashijima, A., Oct 1 2015, In : Fusion Engineering and Design. 96-97, p. 629-632 4 p.

Research output: Contribution to journalArticle

Plasmas
Control systems
Data storage equipment
Program processors
Distributed parameter control systems