All Stories

  1. Improved modeling of a lower-hybrid wave driven plasma using an extended MHD equilibrium reconstruction on the TST-2 spherical tokamak

    Article • January 2023, American Institute of Physics

    Dr. Naoto Tsujii

  2. Overview of coordinated spherical tokamak research in Japan

    Article • Nuclear Fusion, February 2022, Institute of Physics Publishing

    Dr. Naoto Tsujii

  3. Modification of the magneto-hydrodynamic equilibrium by the lower-hybrid wave driven fast electrons on the TST-2 spherical tokamak

    Article • Nuclear Fusion, October 2021, Institute of Physics Publishing

    Dr. Naoto Tsujii

  4. Erratum: “Langmuir Probe Measurements of Scrape-Off Layer Conditions in RF-Driven Plasmas in TST-2” [Plasma Fusion Res. 15, 2402009 (2020)]

    Article • Plasma and Fusion Research, July 2020, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  5. Langmuir Probe Measurements of Scrape-Off Layer Conditions in RF-Driven Plasmas in TST-2

    Article • Plasma and Fusion Research, April 2020, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  6. Studies of a Lower-Hybrid Wave Driven Plasma Equilibrium with a Hybrid-MHD Model on the TST-2 Spherical Tokamak

    Article • Plasma and Fusion Research, April 2020, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  7. Observation of Parametric Decay Instability on TST-2 Lower Hybrid Wave Driven Plasma

    Article • Plasma and Fusion Research, March 2020, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  8. Theoretical study of pre-ionization by inductive field in tokamaks

    Article • Nuclear Fusion, February 2020, Institute of Physics Publishing

    Dr. Naoto Tsujii

  9. Measurement of the Lower Hybrid Wave Using RF Magnetic Probes on the TST-2 Spherical Tokamak

    Article • Plasma and Fusion Research, June 2019, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  10. Development of capacitively-coupled combline antennas for current drive in tokamaks

    Article • Nuclear Fusion, April 2019, Institute of Physics Publishing

    Dr. Naoto Tsujii

  11. Improvement of Aperture Configuration to Reduce the Stray Light for Thomson Scattering Measurement Using a Peripheral Beam Profile Monitor

    Article • Plasma and Fusion Research, April 2019, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  12. Current Drive Experiment Using Top/Outboard Side Lower Hybrid Wave Injection on TST-2 Spherical Tokamak

    Article • Plasma and Fusion Research, September 2018, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  13. A simulation environment to simulate lower-hybrid-wave-driven plasmas efficiently

    Article • Computer Physics Communications, September 2018, Elsevier

    Dr. Naoto Tsujii

  14. Measurement of the Local Current Density Inside a Current Sheet Using a Rogowski Coil Array on UTST Merging Plasmas

    Article • Plasma and Fusion Research, July 2018, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  15. Pre-ionization by AC Ohmic coil operation in the TST-2 spherical tokamak

    Article • Nuclear Fusion, November 2017, Institute of Physics Publishing

    Dr. Naoto Tsujii

  16. Numerical modeling of lower hybrid current drive in fully non-inductive plasma start-up experiments on TST-2

    Article • Nuclear Fusion, September 2017, Institute of Physics Publishing

    Dr. Naoto Tsujii

  17. Measurements of edge plasma parameters during internal reconnection events in the TST-2 spherical tokamak

    Article • Physics of Plasmas, June 2017, American Institute of Physics

    Dr. Naoto Tsujii

  18. Fully non-inductive plasma start-up with lower-hybrid waves using the outboard-launch and top-launch antennas on the TST-2 spherical tokamak

    Article • EPJ Web of Conferences, January 2017, EDP Sciences

    Dr. Naoto Tsujii

  19. Development of a Hard X-Ray Profile Measurement System in the TST-2 Spherical Tokamak

    Article • Plasma and Fusion Research, January 2017, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  20. Observation of High Impurity Ion Temperatures in ECW/EBW Sustained Plasmas on LATE

    Article • Plasma and Fusion Research, January 2017, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  21. Plasma current start-up experiments using outboard- and top-launch lower hybrid wave on the TST-2 spherical tokamak

    Article • Nuclear Fusion, December 2016, Institute of Physics Publishing

    Dr. Naoto Tsujii

  22. A model of plasma current through a hole of Rogowski probe including sheath effects

    Article • Review of Scientific Instruments, April 2016, American Institute of Physics

    Dr. Naoto Tsujii

  23. RF Central Solenoid Operation for Plasma Production and Current Drive in TST-2

    Article • Plasma and Fusion Research, January 2016, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  24. Measurements of ICRF wave-induced density fluctuations in LHD by a microwave reflectometer

    Article • Journal of Instrumentation, December 2015, Institute of Physics Publishing

    Dr. Naoto Tsujii

  25. Thomson scattering measurements in low-density plasmas in the TST-2 spherical tokamak

    Article • Journal of Instrumentation, December 2015, Institute of Physics Publishing

    Dr. Naoto Tsujii

  26. Validation of full-wave simulations for mode conversion of waves in the ion cyclotron range of frequencies with phase contrast imaging in Alcator C-Mod

    Article • Physics of Plasmas, August 2015, American Institute of Physics

    Dr. Naoto Tsujii

  27. Non-inductive plasma start-up experiments on the TST-2 spherical tokamak using waves in the lower-hybrid frequency range

    Article • Nuclear Fusion, June 2015, Institute of Physics Publishing

    Dr. Naoto Tsujii

  28. First Measurement of Electron Temperature and Density Profiles for Spherical Tokamak Plasmas Sustained by Lower Hybrid Waves

    Article • Plasma and Fusion Research, January 2015, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  29. Measurement and simulation of ICRF wave intensity with a recalibrated phase contrast imaging diagnostic on Alcator C-Mod

    Article • January 2015, American Institute of Physics

    Dr. Naoto Tsujii

  30. Plasma current start-up using the lower hybrid wave on the TST-2 spherical tokamak

    Article • January 2015, American Institute of Physics

    Dr. Naoto Tsujii

  31. 20 years of research on the Alcator C-Mod tokamak

    Article • Physics of Plasmas, November 2014, American Institute of Physics

    Dr. Naoto Tsujii

  32. Erratum: “Local current density measurement using a Rogowski probe in the Tokyo Spherical Tokamak-2” [Rev. Sci. Instrum. 85, 11D813 (2014)]

    Article • Review of Scientific Instruments, October 2014, American Institute of Physics

    Dr. Naoto Tsujii

  33. Plasma current start-up experiments using a dielectric-loaded waveguide array antenna in the TST-2 spherical tokamak

    Article • Nuclear Fusion, August 2014, Institute of Physics Publishing

    Dr. Naoto Tsujii

  34. Demonstration of improvement in the signal-to-noise ratio of Thomson scattering signal obtained by using a multi-pass optical cavity on the Tokyo Spherical Tokamak-2

    Article • Review of Scientific Instruments, August 2014, American Institute of Physics

    Dr. Naoto Tsujii

  35. Local current density measurement using a Rogowski probe in Tokyo Spherical Tokamak-2

    Article • Review of Scientific Instruments, July 2014, American Institute of Physics

    Dr. Naoto Tsujii

  36. Note: Multi-pass Thomson scattering measurement on the TST-2 spherical tokamak

    Article • Review of Scientific Instruments, May 2014, American Institute of Physics

    Dr. Naoto Tsujii

  37. A multichannel reflectometer for edge density profile measurements at the ICRF antenna in ASDEX Upgrade

    Article • January 2014, American Institute of Physics

    Dr. Naoto Tsujii

  38. Characteristics of a novel lower hybrid wave antenna for the TST-2 spherical tokamak

    Article • January 2014, American Institute of Physics

    Dr. Naoto Tsujii

  39. Development of a Local Current Diagnostic using a Small Rogowski Coil for a Spherical Tokamak Plasma in TST-2

    Article • Plasma and Fusion Research, January 2014, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  40. Effect of collisional heat transfer in ICRF power modulation experiment on ASDEX Upgrade

    Article • January 2014, American Institute of Physics

    Dr. Naoto Tsujii

  41. Identification of Waves by RF Magnetic Probes during Lower Hybrid Wave Injection Experiments on the TST-2 Spherical Tokamak

    Article • Plasma and Fusion Research, January 2014, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  42. Injection and Confinement of a Laser Pulse in an Optical Cavity for Multi-Pass Thomson Scattering Diagnostics in the TST-2 Spherical Tokamak Device

    Article • Plasma and Fusion Research, January 2014, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  43. Plasma Density Suppression by Electron Cyclotron Wave in Lower Hybrid Wave Driven TST-2 Spherical Tokamak Plasma

    Article • Plasma and Fusion Research, January 2014, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  44. Results of lower hybrid wave experiments using a dielectric loaded waveguide array antenna on TST-2

    Article • January 2014, American Institute of Physics

    Dr. Naoto Tsujii

  45. Two-Fluid Equilibrium Considerations of <i>T</i><sub>e</sub>/<i>T</i><sub>i </sub>≫ 1, Collisionless ST Plasmas Sustained by RF Electron Heating

    Article • Plasma and Fusion Research, January 2014, Japan Society of Plasma Science and Nuclear Fusion Research

    Dr. Naoto Tsujii

  46. Progress towards steady-state regimes in Alcator C-Mod

    Article • Nuclear Fusion, October 2013, Institute of Physics Publishing

    Dr. Naoto Tsujii

  47. Overview of experimental results and code validation activities at Alcator C-Mod

    Article • Nuclear Fusion, September 2013, Institute of Physics Publishing

    Dr. Naoto Tsujii

  48. ICRF operation with improved antennas in ASDEX Upgrade with W wall

    Article • Nuclear Fusion, August 2013, Institute of Physics Publishing

    Dr. Naoto Tsujii

  49. Transport and turbulence studies in the linear ohmic confinement regime in Alcator C-Mod

    Article • Plasma Physics and Controlled Fusion, November 2012, Institute of Physics Publishing

    Dr. Naoto Tsujii

  50. Measurements of ion cyclotron range of frequencies mode converted wave intensity with phase contrast imaging in Alcator C-Mod and comparison with full-wave simulations

    Article • Physics of Plasmas, August 2012, American Institute of Physics

    Dr. Naoto Tsujii

  51. Ohmic energy confinement saturation and core toroidal rotation reversal in Alcator C-Mod plasmas

    Article • Physics of Plasmas, March 2012, American Institute of Physics

    Dr. Naoto Tsujii

  52. Scaling of H-mode threshold power and L–H edge conditions with favourable ion grad-B drift in Alcator C-Mod tokamak

    Article • Nuclear Fusion, January 2012, Institute of Physics Publishing

    Dr. Naoto Tsujii

  53. Rotation Reversal Bifurcation and Energy Confinement Saturation in Tokamak OhmicL-Mode Plasmas

    Article • Physical Review Letters, December 2011, American Physical Society (APS)

    Dr. Naoto Tsujii

  54. Observations of core toroidal rotation reversals in Alcator C-Mod ohmic L-mode plasmas

    Article • Nuclear Fusion, June 2011, Institute of Physics Publishing

    Dr. Naoto Tsujii

  55. Scaling of the power exhaust channel in Alcator C-Mod

    Article • Physics of Plasmas, May 2011, American Institute of Physics

    Dr. Naoto Tsujii

  56. ICRF mode conversion flow drive on Alcator C-Mod*

    Article • Nuclear Fusion, April 2011, Institute of Physics Publishing

    Dr. Naoto Tsujii

  57. ICRF Mode Conversion Flow Drive Experiments on Alcator C-Mod

    Article • January 2011, American Institute of Physics

    Dr. Naoto Tsujii

  58. ICRF Mode Conversion Studies with Phase Contrast Imaging and Comparisons with Full-Wave Simulations

    Article • January 2011, American Institute of Physics

    Dr. Naoto Tsujii

  59. Minority Ion Measurements During ICRF Experiments in Alcator C-Mod

    Article • January 2011, American Institute of Physics

    Dr. Naoto Tsujii

  60. Experimental study of reversed shear Alfvén eigenmodes during the current ramp in the Alcator C-Mod tokamak

    Article • Plasma Physics and Controlled Fusion, September 2010, Institute of Physics Publishing

    Dr. Naoto Tsujii

  61. I-mode: an H-mode energy confinement regime with L-mode particle transport in Alcator C-Mod

    Article • Nuclear Fusion, August 2010, Institute of Physics Publishing

    Dr. Naoto Tsujii

  62. Overview of the Alcator C-Mod Research Program

    Article • Nuclear Fusion, September 2009, Institute of Physics Publishing

    Dr. Naoto Tsujii

  63. Studies of turbulence and transport in Alcator C-Mod ohmic plasmas with phase contrast imaging and comparisons with gyrokinetic simulations

    Article • Plasma Physics and Controlled Fusion, April 2009, Institute of Physics Publishing

    Dr. Naoto Tsujii

  64. Observation of ion cyclotron range of frequencies mode conversion plasma flow drive on Alcator C-Mod

    Article • Physics of Plasmas, March 2009, American Institute of Physics

    Dr. Naoto Tsujii

  65. ICRF Mode Conversion Flow Drive on Alcator C-Mod and Projections to Other Tokamaks

    Article • January 2009, American Institute of Physics

    Dr. Naoto Tsujii

  66. Measurements of Mode Converted Ion Cyclotron Wave with Phase Contrast Imaging in Alcator C-Mod and Comparisons with Synthetic PCI Simulations in TORIC

    Article • January 2009, American Institute of Physics

    Dr. Naoto Tsujii

  67. Studies of turbulence and transport in Alcator C-Mod H-mode plasmas with phase contrast imaging and comparisons with GYRO

    Article • Physics of Plasmas, January 2009, American Institute of Physics

    Dr. Naoto Tsujii

  68. Observation of Ion-Cyclotron-Frequency Mode-Conversion Flow Drive in Tokamak Plasmas

    Article • Physical Review Letters, December 2008, American Physical Society (APS)

    Dr. Naoto Tsujii

  69. ECH and HHFW Start-Up Experiments on the TST-2 Spherical Tokamak

    Article • Fusion Science & Technology, February 2007, Taylor & Francis

    Dr. Naoto Tsujii