Professor
Hiroshi Idei

Title: Professor, Director of the Center for Advanced Plasma Science and Engineering, Research Institute for Applied Mechanics
Main Research Topics: Non-inductive plasma current startup and sustainment, density diagnostics, radiation diagnostics
Message:
 Even if you have something you "want to do," you may not know where to start. That’s often because you haven’t broken it down into manageable tasks that, when stacked together, will lead you to your goal.
 Breaking problems into steps requires logical thinking based on extensive experience. If it feels difficult, ask someone experienced to help you define the tasks—and just try it. Nothing progresses unless you start building experience. Saying “I won’t do it because I can’t” gets you nowhere.
 Personally, there are still many things I can't do. I recently learned from younger people and started working with Arduino. The goal is still far ahead, but I’m enjoying the journey.

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Associate Professor
Ryuya Ikezoe

Title: Associate Professor
Main Research Topics: Instabilities and self-organization in high-temperature plasmas, wave heating and diagnostics, high-energy particle physics in magnetically confined plasmas, wave-particle interactions
Message:
 Specialization: Plasma physics, fusion science
 Fascinated by the invisible nature of magnetic fields and the mysteries of solar flares, I entered the world of high-temperature plasma research. I started with MHD relaxation phenomena, and have worked on wave heating in the ion cyclotron frequency range, wave diagnostics using microwaves, and high-energy ion physics.
 Recently, I’ve been focusing on research related to high-energy electrons. I'm also interested in space plasma simulations. Waves represent the collective motion of plasma, and I believe there is still great potential in their application for controlling plasma behavior.
 I love physical activity and making things. I’m grateful to be surrounded by many colleagues who enjoy soccer, a good drink, and who share a passion for physics and freedom.

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Clerical Staff & Students

Have a great research life!

Join Our Team

Laboratory Life


・QUEST Experimental Meeting (Every Monday 9:45 AM, attended by all center members)
・Laboratory Meeting (Once a week | research discussions, presentations, and planning)
・Laboratory Seminar (Once a week | reading sessions with different topics each year)
・Q-Seminar (Plasma basics study sessions in spring and summer with students and several faculty members)
・M1 Midterm Presentation in December
・M2 Thesis Presentation in February
・Conferences and Workshops held as needed (Including Annual Meeting of the Japan Society of Plasma Science and Nuclear Fusion, Kyushu Branch Conference, Annual Meeting of the Physical Society of Japan, and many international conferences depending on the topic)

Fun Fun Fun


・Wednesday evening soccer (revived!)
・Center BBQ party
・Lab drinking parties (irregular)
・Relay Marathon (with teams from QUEST and the RIAM)
・Fukuoka SoftBank Hawks baseball game watching
・Cheering for Sagan Tosu (with Professor K from the RIAM)

Graduates


Year Name Degree Thesis Title
2024 Yuta Shirai Master Development of a fast hard X-ray detector for high-frequency fluctuation measurement of energetic electrons in QUEST
2024 Sayaka Tai Master High-Sensitivity and High-Time-Resolution Radiation Measurement during Sudden Plasma Current Decay Events in QUEST
2024 Kotaro Yamakawa Bachelor Study on advancement of high-speed camera measurement in QUEST
2023 Rikuya Miyata Master Ray tracing for constructing a scenario of Electron Bernstein heating with OXB mode conversion in QUEST
2022 Seiya Sakai Master Oblique ECE measurement and adaptive array analysis in QUEST spherical tokamak
2021 Masaharu Fukuyama Doctor Clarification of the physical mechanism of mode conversion of Electron Bernstein waves
2021 ZHANG YIFAN Doctor Development of a bipolar power supply with IGBTs and its application to Ohmic heating experiment in QUEST spherical tokamak
2021 Kosuke Takeda Master Study on MHD characteristics in spherical tokamak
2020 Michihiro Kudo Master Simultaneous measurement of fluctuations and equilibrium magnetic fields using fast-driving magnetic probes in QUEST
2020 Ryoya Kato Master Oblique ECE measurement due to energetic electrons and adaptive array analysis
2019 Ryuichi Ashida Master Verification of the principle of removing multiple wall reflection components using wavenumber differentiation in reflectometry
2019 Daichi Ogata Master Development of a comb-line oscillator for propagation wave heterodyne detection and development of a reflective diffraction grating for propagation wave control
2018 Miu Yunoki Master Development of an interferometer system for electron density measurement in QUEST
2018 Masaharu Fukuyama Master Development and application of a radiation measurement system using multi-element adaptive array measurement
2017 ALAM MD MAHBUB Doctor Particle Orbit Analysis under Equilibrium Configuration for Evaluating the Orbit Current Distribution driven by Electron Cyclotron Heating on QUEST
2016 Hiroaki Owada Master Observation of up-down asymmetry in emission intensity in QUEST
2015 Masashi Maeda Master Measurement of plasma rotation and model distribution analysis in open magnetic surface configuration in QUEST
2015 Masanobu Hamasaki Master Analysis of wall multiple reflection effects in AM reflectometry
2015 Yoshika Hayashi Master Development of thermal radiation imaging technology for electron cyclotron radiation measurement
2014 Ryuta Akimoto Master Development of a phased array receiving system for observing mode conversion of Electron Bernstein waves
2013 Banerjee Santanu Doctor Experimental Studies of Edge Turbulence, Convective Transport and SOL Flow in the Spherical Tokamak QUEST
2012 Seiya Tajima Doctor Role of energetic electrons on non-inductive current start-up and high poloidal beta equilibrium on spherical tokamak QUEST
2012 Rusinov Aleksandr Doctor Deuterium retention and trapping mechanisms of tungsten materials exposed to low energy high flux plasma
2012 Kalinnikova Evgeniya Doctor Numerical Analyses of Electron Bernstein Wave Dynamics for QUEST
2012 Masatsugu Sakaguchi Master Development of a quasi-optical high-purity HE11 mode generator in oversized corrugated waveguide transmission system
2012 Yosuke Madai Master SOL plasma measurement using electrostatic and thermal probes in QUEST spherical tokamak
2012 Takanori Itado Master Development of AM reflectometry for interferometric and density distribution measurement in QUEST
2012 Yuki Inoue Master Evaluation of hydrogen and helium wall absorption and release associated with particle recycling in QUEST
2012 Tsubasa Inoue Master Measurement of plasma rotation using Doppler shift in QUEST
2011 SANJEEV KUMAR SHARMA Doctor Experimental Studies on Plasma Wall Interaction in Spherical Tokamaks: material damage analysis and role of hydrogen permeation on wall pumping/recycling dynamics
2011 Tomofumi Ryokai Doctor Measurement of plasma fluctuations in current drive (Doctoral research theme)
2008 RAJENDRAPRASAD BHATTARYAY Doctor Experimental study on surface temperature effects on fuel particle recycling and its active control in TRIAM-1M and CPD devices
2007 Koji Okamoto Master Surface Temperature Dependence of Tungsten Re-deposition and Hydrogen Retention in RF Plasma
2007 Tetsushi Kikukawa Master Two-Dimensional Density Profile Measurement Using a Sheet Lithium Beam
2006 Yuichi Inada Master Two-Dimensional Electron Density Profile Measurement Using a Sheet Thermal Li Beam and Shape Analysis of CPD Plasma
2006 Yasunori Nozaki Master Response of Neutral and Impurity Fluxes to Thermal and Particle Perturbations in Steady-State Plasma in TRIAM-1M
2006 Yuichi Wataya Master Development of ECE Radiometer and AM Reflectometer for Electron Temperature and Density Measurement Using a Local Oscillator with Wide Frequency Sweep Capability
2005 Kota Nakashima Master Surface Temperature Dependence of Hydrogen Recycling and Impurity Influx from Hot Spot Regions
2005 Seiji Nishi Master Study on Fundamental Wave Electron Cyclotron Current Drive in LHCD Plasmas in TRIAM-1M
2004 Masahiro Kitaguchi Master Prototype Development of a Film Thickness Meter Using Optical Method and Real-Time Measurement in TRIAM-1M
2004 Hiroyuki Hoshika Master Study on Magnetic Reconnection and Transport Transition Phenomena in Tokamak Plasma Using Neutral Particle Energy Analyzer
2004 Nobumi Maezono Master Study on the Generation and Re-deposition of Impurities and Dust in TRIAM-1M Using Visible and Infrared Spectrometers
2003 Hiroaki Akanishi Master Ion Temperature Measurement in TRIAM-1M Using Charge Exchange Neutral Particle Energy Analyzer
2003 Takeru Kuramoto Master Study on the Mechanism of Metal Impurity Generation and Its Effect on Plasma Steady-State Using Visible and Infrared Measurements in TRIAM-1M
2003 Yasunobu Matsuo Master Study on Toroidal Non-Uniformity and Density Dependence of Particle Recycling in TRIAM-1M Using H-alpha Profile Measurement
2002 Satoshi Nakamura Master Study on Impurity Behavior in Steady-State Plasma Using Visible Spectrometer in TRIAM-1M
1999 Yasuyuki Muramatsu Master Study on Ion Confinement Properties in High-Performance Plasma in TRIAM-1M Using Charge Exchange Neutral Particle Energy Analyzer

Places of Employment

Mainly power companies, automobile manufacturers, and electronics manufacturers
(Examples) TSMC, Nissan Motor Co., Ltd., Hitachi, Ltd., Kyocera Corporation, Chugoku Electric Power Co., Inc., Kyudenko Corporation, Sony Corporation, Hitachi High-Tech Corporation, Mitsubishi Electric Corporation, Furukawa Electric Co., Ltd., Japan Research Institute, Showa Denko K.K., Toyota Motor Corporation, Nippon Steel Engineering Co., Kyushu Electric Power Co., Inc., Isuzu Motors Ltd., Mazda, Olympus Corporation, Hitachi Metals, Ltd., Government Officer (Tokyo Fire Department), JFE Steel Corporation, Canon Inc., FUJIFILM Corporation, Nippon Steel Corporation, JEOL Ltd., Toyota Techno Service Corporation, etc.