Find Research Outputs

Search in all content

Filters for Research Output

Search concepts
Selected filters

Publication Year

  • 2020
  • 2018
  • 2017
  • 2016
  • 2015
  • 2014
  • 2013
  • 2012

Author

  • Akihide Fujisawa
2013

Development of plasma control system for divertor configuration on QUEST

Hasegawa, M., Nakamura, K., Zushi, H., Hanada, K., Fujisawa, A., Matsuoka, K., Mitarai, O., Idei, H., Nagashima, Y., Tokunaga, K., Kawasaki, S., Nakashima, H. & Higashijima, A., Apr 10 2013, In : Fusion Engineering and Design. 88, 6-8, p. 1074-1077 4 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)
2016

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

3 Citations (Scopus)
2013

Sawtooth-triggered limit-cycle oscillations and I-phase in the HL-2A tokamak

Zhao, K. J., Cheng, J., Diamond, P. H., Dong, J. Q., Yan, L. W., Hong, W. Y., Xu, M., Tynan, G., Miki, K., Huang, Z. H., Itoh, K., Itoh, S. I., Fujisawa, A., Nagashima, Y., Inagaki, S., Wang, Z. X., Wei, L., Song, X. M., Lei, G. J., Li, Q. & 5 others, Ji, X. Q., Liu, Y., Yang, Q. W., Ding, X. T. & Duan, X. R., Dec 1 2013, In : Nuclear Fusion. 53, 12, 123015.

Research output: Contribution to journalArticle

8 Citations (Scopus)
2016

Experimental Identification of Electric Field Excitation Mechanisms in a Structural Transition of Tokamak Plasmas

Kobayashi, T., Itoh, K., Ido, T., Kamiya, K., Itoh, S. I., Miura, Y., Nagashima, Y., Fujisawa, A., Inagaki, S., Ida, K. & Hoshino, K., Aug 4 2016, In : Scientific reports. 6, 30720.

Research output: Contribution to journalArticle

12 Citations (Scopus)
2015

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

6 Citations (Scopus)
2016

Structure formation in parallel ion flow and density profiles by cross-ferroic turbulent transport in linear magnetized plasma

Kobayashi, T., Inagaki, S., Kosuga, Y., Sasaki, M., Nagashima, Y., Yamada, T., Arakawa, H., Kasuya, N., Fujisawa, A., Itoh, S. I. & Itoh, K., Oct 1 2016, In : Physics of Plasmas. 23, 10, 102311.

Research output: Contribution to journalArticle

9 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

3 Citations (Scopus)
2018

Evaluation of measurement signal of heavy ion beam probe of energetic-particle driven geodesic acoustic modes

Sasaki, M., Itoh, K., Ido, T., Shimizu, A., Kobayashi, T., Arakawa, H., Kasuya, N., Fujisawa, A. & Itoh, S. I., Jan 1 2018, In : Plasma and Fusion Research. 13, 3403040.

Research output: Contribution to journalArticle

Open Access
2015

Observation of heat flux and plasma flow in scrape off layer in QUEST

Onchi, T., Mahira, Y., Nagaoka, K., Tashima, S., Banerjee, S., Mishra, K., Idei, H., Hanada, K., Nakamura, K., Fujisawa, A., Nagashima, Y., Hasegawa, M., Matsuoka, K., Kuzmin, A., Watanabe, O., Kawasaki, S., Nakashima, H. & Higashijima, A., Jul 22 2015, In : Journal of Nuclear Materials. 463, p. 428-431 4 p., 48807.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Tomography for local plasma turbulence measurements

Fujisawa, A., Nagashima, Y. & Inagaki, S., Jan 1 2015, In : Plasma and Fusion Research. 10, 1201080.

Research output: Contribution to journalArticle

5 Citations (Scopus)
2013

Cross-field motion of plasma blob-filaments and related particle flux in an open magnetic field line configuration on QUEST

Liu, H. Q., Hanada, K., Nishino, N., Ogata, R., Ishiguro, M., Gao, X., Zushi, H., Nakamura, K., Fujisawa, A., Idei, H. & Hasegawa, M., Jan 1 2013, In : Journal of Nuclear Materials. 438, SUPPL, p. S513-S517

Research output: Contribution to journalArticle

2 Citations (Scopus)
2020
2014

Development of a plasma control system for steady-state operation on QUEST

Hasegwa, M., Nakamura, K., Zushi, H., Hanada, K., Fujisawa, A., Matsuoka, K., Idei, H., Nagashima, Y., Tokunaga, K., Kawasaki, S., Nakashima, H. & Higashijima, A., Jan 1 2014, In : Journal of the Korean Physical Society. 65, 8, p. 1191-1195 5 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)
2015

Particle balance in long duration RF driven plasmas on QUEST

Hanada, K., Zushi, H., Yoshida, N., Yugami, N., Honda, T., Hasegawa, M., Mishra, K., Kuzmin, A., Nakamura, K., Fujisawa, A., Idei, H., Nagashima, Y., Watanabe, O., Onchi, T., Watanabe, H., Tokunaga, K., Higashijima, A., Kawasaki, S., Nakashima, H., Takase, Y. & 3 others, Fukuyama, A., Mitarai, O. & Peng, Y. K. M., Jul 22 2015, In : Journal of Nuclear Materials. 463, p. 1084-1086 3 p., 48871.

Research output: Contribution to journalArticle

10 Citations (Scopus)
2012

The role of energetic electrons on non-inductive current start-up and formation of an inboard poloidal field null configuration in the spherical tokamak QUEST

Tashima, S., Zushi, H., Isobe, M., Idei, H., Okamura, S., Hanada, K., Nakamura, K., Fujisawa, A., Matsuoka, K., Hasegawa, M., Nagashima, Y., Ishiguro, M., Kawasaki, S., Nakashima, H. & Higashijima, A., Dec 1 2012, 39th EPS Conference on Plasma Physics 2012, EPS 2012 and the 16th International Congress on Plasma Physics. p. 305-308 4 p. (39th EPS Conference on Plasma Physics 2012, EPS 2012 and the 16th International Congress on Plasma Physics; vol. 1).

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

2016

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

1 Citation (Scopus)
2015

Evaluation of non-linear mode coupling during end-plate biasing experiment in PANTA

Kin, F., Yamada, T., Inagaki, S., Arakawa, H., Nagashima, Y., Kasuya, N., Fujisawa, A., Nakanishi, K., Kono, H., Mizokami, T., Sasaki, M., Lesur, M., Kosuga, Y., Itoh, K. & Itoh, S. I., Jan 1 2015, In : Plasma and Fusion Research. 10, 3401043.

Research output: Contribution to journalArticle

3 Citations (Scopus)
2018

Symmetry-breaking of turbulence structure and position identification in toroidal plasmas

Itoh, K., Itoh, S. I., Nagashima, Y., Yamada, T., Kosuga, Y. & Fujisawa, A., Jan 1 2018, In : Plasma and Fusion Research. 13, 1102113.

Research output: Contribution to journalArticle

Open Access
2016
6 Citations (Scopus)
2014

End plate biasing experiments in linear magnetized plasmas

Yamada, T., Shigeru, I., Kobayashi, T., Nagashima, Y., Mitsuzono, T., Miwa, Y., Nakanishi, K., Fujino, H., Sasaki, M., Kasuya, N., Lesur, M., Kosuga, Y., fujisawa, A., Itoh, S. & Itoh, K., Nov 1 2014, In : Nuclear Fusion. 54, 11, 114010.

Research output: Contribution to journalArticle

7 Citations (Scopus)
2018

Experimental research plan of nonlinearity of tokamak edge turbulence in plasma turbulence observatory

Nagashima, Y. & Fujisawa, A., Aug 1 2018, Front-runners' Symposium on Plasma Physics in Honor of Professors Kimitaka Itoh and Sanae-I. Itoh. Todo, Y. & Ida, K. (eds.). American Institute of Physics Inc., 020006. (AIP Conference Proceedings; vol. 1993).

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

2016

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

1 Citation (Scopus)
2014

Investigation of non-inductive plasma current start-up by RF on QUEST

Ishiguro, M., Hanada, K., Liu, H., Ogata, R., Isobe, M., Tashima, S., Zushi, H., Sato, K., Fujisawa, A., Nakamura, K., Idei, H., Sakamoto, M., Hasegawa, M., Takase, Y., Maekawa, T., Kishimoto, Y., Mitarai, O., Kawasaki, S., Nakashima, H. & Higashijima, A., Jan 1 2014, In : Journal of Physics: Conference Series. 511, 1, 012041.

Research output: Contribution to journalConference article

2 Citations (Scopus)
2018
3 Citations (Scopus)
2017
6 Citations (Scopus)

Multiple-instabilities in magnetized plasmas with density gradient and velocity shears

Sasaki, M., Kasuya, N., Toda, S., Yamada, T., Kosuga, Y., Arakawa, H., Kobayashi, T., Inagaki, S., Fujisawa, A., Nagashima, Y., Itoh, K. & Itoh, S. I., Jan 1 2017, In : Plasma and Fusion Research. 12, 1401042.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Coexistence of driftwaves and d'angelo modes at different position and frequency in linear plasma device

Dupertuis, N., Inagaki, S., Nagashima, Y., Kosuga, Y., Kin, F., Kobayashi, T., Kasuya, N., Sasaki, M., Fujisawa, A., Tran, M. Q., Itoh, S. I. & Itoh, K., Jan 1 2017, In : Plasma and Fusion Research. 12, 1201008.

Research output: Contribution to journalArticle

2 Citations (Scopus)
2020

Design and Implementation of DC Pulsed Power Supply Employing Self-Excited Induction Generators and Flywheels for Toroidal Field Coils of a Tokamak Device, PLATO

Murayama, M., Kato, S., Fujisawa, A., Matsuoka, K., Tsutsui, H., Tsuji-Iio, S. & Shimada, R., Jun 2020, In : IEEE Transactions on Applied Superconductivity. 30, 4, 9042294.

Research output: Contribution to journalArticle

Magnetic field dependence of plasma properties observed with tomography in PANTA

Marui, I., Fujisawa, A., Nagashima, Y., Moon, C., Yamasaki, K., Inagaki, S. & Yamada, T., Jan 1 2020, In : Plasma and Fusion Research. 15, 1201018.

Research output: Contribution to journalArticle

Open Access

Observation of spatiotemporal structures of temperature fluctuations by using of a statistical phase detection method in a linear magnetized plasma

Kawachi, Y., Inagaki, S., Kin, F., Yamasaki, K., Kosuga, Y., Sasaki, M., Nagashima, Y., Yamada, T., Arakawa, H., Kasuya, N., Moon, C., Hasamada, K. & Fujisawa, A., May 2020, In : Plasma Physics and Controlled Fusion. 62, 5, 055011.

Research output: Contribution to journalArticle

Open Access
2012

Statistical features of coherent structures at increasing magnetic field pitch investigated using fast imaging in QUEST

Banerjee, S., Zushi, H., Nishino, N., Hanada, K., Sharma, S. K., Honma, H., Tashima, S., Inoue, T., Nakamura, K., Idei, H., Hasegawa, M. & Fujisawa, A., Dec 1 2012, In : Nuclear Fusion. 52, 12, 123016.

Research output: Contribution to journalArticle

11 Citations (Scopus)
2015

Azimuthal inhomogeneity of turbulence structure and its impact on intermittent particle transport in linear magnetized plasmas

Kobayashi, T., Inagaki, S., Sasaki, M., Kosuga, Y., Arakawa, H., Yamada, T., Nagashima, Y., Miwa, Y., Kasuya, N., Fujisawa, A., Itoh, S. I. & Itoh, K., Nov 2015, In : Physics of Plasmas. 22, 11, 112301.

Research output: Contribution to journalArticle

6 Citations (Scopus)
2016

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

2 Citations (Scopus)
2013

Spatial structures and interaction of multiple sheared flow populations in tokamak edge turbulence

Zhao, K. J., Dong, J. Q., Yan, L. W., Diamond, P. H., Cheng, J., Hong, W. Y., Huang, Z. H., Xu, M., Tynan, G. R., Itoh, K., Itoh, S. I., Fujisawa, A., Nagashima, Y., Inagaki, S., Wang, Z. X., Wei, L., Li, Q., Ji, X. Q., Huang, Y., Liu, Y. & 5 others, Zhou, J., Song, X. M., Yang, Q. W., Ding, X. T. & Duan, X. R., Aug 1 2013, In : Nuclear Fusion. 53, 8, 083011.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Turbulence velocimetry of tangential fast imaging data on QUEST

Banerjee, S., Zushi, H., Nishino, N., Nagashima, Y., Hanada, K., Tashima, S., Inoue, T., Nakamura, K., Idei, H., Hasegawa, M., Fujisawa, A. & Matsuoka, K., Jan 1 2013, In : Plasma and Fusion Research. 8, 2402098.

Research output: Contribution to journalArticle

2012

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

16 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

13 Citations (Scopus)
2014

Dynamics of edge limit cycle oscillation in the JFT-2M Tokamak

Kobayashi, T., Itoh, K., Ido, T., Kamiya, K., Itoh, S. I., Miura, Y., Nagashima, Y., Fujisawa, A., Inagaki, S., Ida, K., Kasuya, N. & Hoshino, K., Jul 2014, In : Nuclear Fusion. 54, 7, 073017.

Research output: Contribution to journalArticle

19 Citations (Scopus)
2017

Model validation for radial electric field excitation during L-H transition in JFT-2M tokamak

Kobayashi, T., Itoh, K., Ido, T., Kamiya, K., Itoh, S. I., Miura, Y., Nagashima, Y., Fujisawa, A., Inagaki, S., Ida, K. & Hoshino, K., Mar 10 2017, In : Nuclear Fusion. 57, 7, 072005.

Research output: Contribution to journalArticle

1 Citation (Scopus)
2016

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 2016, In : Plasma Science and Technology. 18, 11, p. 1069-1075 7 p.

Research output: Contribution to journalArticle

9 Citations (Scopus)
2018

Propagation direction of geodesic acoustic modes driven by drift wave turbulence

Sasaki, M., Itoh, K., Kobayashi, T., Kasuya, N., Fujisawa, A. & Itoh, S. I., Oct 3 2018, In : Nuclear Fusion. 58, 11, 112005.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Past and present experiments toward PLATO project

Fujisawa, A., Aug 1 2018, Front-runners' Symposium on Plasma Physics in Honor of Professors Kimitaka Itoh and Sanae-I. Itoh. Todo, Y. & Ida, K. (eds.). American Institute of Physics Inc., 020011. (AIP Conference Proceedings; vol. 1993).

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

2 Citations (Scopus)
2017

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

4 Citations (Scopus)

Turbulent transport reduction induced by transition on radial electric field shear and curvature through amplitude and cross-phase in torus plasma

Kobayashi, T., Itoh, K., Ido, T., Kamiya, K., Itoh, S. I., Miura, Y., Nagashima, Y., Fujisawa, A., Inagaki, S. & Ida, K., Dec 1 2017, In : Scientific reports. 7, 1, 14971.

Research output: Contribution to journalArticle

10 Citations (Scopus)
2012

Plasma potential in toroidal devices: T-10, TJ-II, CHS and LHD

Melnikov, A. V., Hidalgo, C., Ido, T., Shimizu, A., Fujisawa, A., Dyabilin, K. S. & Lysenko, S. E., Dec 1 2012, In : Plasma and Fusion Research. 7, SPL.ISS.1, 2402114.

Research output: Contribution to journalArticle

10 Citations (Scopus)
2014

Role of energetic electrons during current ramp-up and production of high poloidal beta plasma in non-inductive current drive on QUEST

Tashima, S., Zushi, H., Isobe, M., Hanada, K., Idei, H., Nakamura, K., Fujisawa, A., Matsuoka, K., Hasegawa, M., Nagashima, Y., Okamura, S., Banerjee, S., Kawasaki, S., Nakashima, H. & Higashijima, A., Feb 1 2014, In : Nuclear Fusion. 54, 2, 023010.

Research output: Contribution to journalArticle

18 Citations (Scopus)
2017

Nonlinear coupling of driftwaves and high frequency fluctuation on PANTA

Hasamada, K., Kosuga, Y., Kin, F., Inagaki, S., Nagashima, Y., Kobayashi, T., Sasaki, M., Kasuya, N., Yamasaki, K., Itoh, S. I., Itoh, K. & Fujisawa, A., Jan 1 2017, In : Plasma and Fusion Research. 12, 1201034.

Research output: Contribution to journalArticle

2016

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

2015

Perspective of negative triangularity tokamak as fusion energy system

Kikuchi, M., Medvedev, S., Takizuka, T., Fasoli, A., Wu, Y., Diamond, P., Duan, X., Kishimoto, Y., Hanada, K., Villard, L., Sauter, O., Coda, S., Duval, B., Reimerdes, H., Brunner, S., Merlo, G., Jiang, J., Wang, M., Ni, M., Chen, D. & 30 others, Du, H., Duan, W., Hou, Y., Ivanov, A., Martynov, A., Poshekhonov, Y., Ueda, Y., Yan, L., Song, X., Zheng, G., Liu, J., Nagasaki, K., Imadera, K., Mishra, K., Fujisawa, A., Nakamura, K., Zushi, H., Pueschel, M., Xu, X., Zhu, P., Told, D., Li, G. Q., Furukawa, M., Ozeki, T., Shimizu, K., Kawashima, K., Urano, H., Honda, M., Ando, T. & Kuriyama, M., Jan 1 2015.

Research output: Contribution to conferencePaper

1 Citation (Scopus)
2018

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