Department of Quantum Science and Energy Engineering

Department of Quantum Science and Energy Engineering consist of following Core Laboratories, Cooperative Laboratories, and etc.
Department of Quantum Science and Energy Engineering① Core Laboratories
Energy Physics Engineering (２), Safety Engineering of Nuclear Systems (４), Particle-Beam Engineering (５)② Cooperative Laboratories
Institute for Materials Research (IMR)
Energy Materials Engineering (２), Quantum Theoretic Material Engineering (２)Institute of Multidisciplinary Research for Advanced Materials (IMRAM)
Energy Chemical Engineering (１)Research Center for Accelerator and Radioisotope Science (RARIS)
Accelerator Radiation Engineering (１)Department of Quantum Science and Energy Engineering
Laboratory

Professor /Associate Professor

Theme of research

Energy Physics Engineering(Advanced Fusion ReactorEngineering)

The realization of fusion reactors as a long-term energy source withProfessor Hidetoshi HASHIZUME*
low environmental loads is one of the most important engineering issues
Associate Professor Satoshi ITO
to be solved in the 21st century.
Associate Professor
Based on interdisciplinary field of superconducting technology,
Shinji EBARA
thermofluid dynamics and electromagnetic structural engineering, ourSenior assistant professor
laboratory carries out the following unique research to design mostWeiying CHENG
attractive fusion reactors,Assistant professor
1. Development of re-mountable high temperature superconducting
Hiroki SHISHIDO
magnet system to produce strong magnetic fields necessary for(Collaborative Chair:plasma confinement,Fusion Reactor System
2. Research of high heat removal system for advanced fusion divertor,Engineering)
3. Design of novel fusion systems for transmutation of fission
Professor (Visiting member)products and minor actinides,
Nagato YANAGI
4. Establishment of non-destructive testing by using microwave.

Energy Physics Engineering(Fusion Plasma Diagnostics andAdvanced Plasma Research)

Professor Kenji TOBITA**Associate Professor
Tetsutarou OISHI
Senior Assistant Professor
Hiroyuki TAKAHASHI

Safety Engineering ofNuclear Systems(Nuclear Energy-FlowEnvironmental Engineering)

Based on plasma experiments, diagnostic technique development andnumerical simulations, fusion plasma studies are conducted. The current
research themes are:
1. Experimental research on divertor plasma
2. Development of plasma diagnostic techniques
3. Numerical simulation of fusion plasma
4. Diagnostics of impurities in high-temperature plasma

Professor Yuichi NIIBORI**
Associate Professor
Taiji CHIDA
Assistant Professor
Tsugumi SEKI
Specially Appointed AssistantProfessor
Tomoko ISHII(Collaborative Chairs:
Fundamental Engineering for
Nuclear Reactor
Decommissioning) Professor(Visiting member)
Masayuki WATANABE

Based on geosphere transport phenomena, chemical reactionengineering and radiochemistry, the fundamental studies on the safetyassessment of radioactive waste disposal system are conducted.
The practical themes are:
1. Development of self-healing barrier of radioactive wastes bypromoting interaction of radionuclides and cement-basedmaterials,
2. Transport phenomena of supersaturated silicic acid in alkali andthermal front, and its application to the design of geologicaldisposal system,
3. Formation mechanism of high-performance natural barrier bydeposition of calcium silicate hydrate in a flow system throughrock fracture,
4. Retardation effect of nuclide migration in unsaturated porous
formation, and its application to performance assessment of theinterim storage facility of contaminant soils,
5. Immobilization of hazardous substances in structural materials ofdisposal system for reducing environmental impacts, and so on.

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Safety Engineering of Nuclear
Systems(Measurement Technology andReliability Quantification)

Safety Engineering of Nuclear
Systems(Degradation Science and Plant
Life Management)

Professor /Associate Professor

Theme of research
Assuring the reliability of structures is one of the most important issues
for the safe operation of nuclear power plants. Our laboratory conducts
various studies for evaluating the structural integrity of large systems suchas
1. Development of nondestructive testing and evaluation techniques
using DC-GHz electromagnetic fields,
2. Development of nondestructive inspection and health monitoring
technique using guided waves,
3. Development of methods to probabilistically evaluate signals ofnondestructive inspections for evaluating the safety of nuclearsystems.

Professor
Noritaka YUSAAssistant Professor
Saijiro Yoshioka

This lab does interdisciplinary studies based on mechanical engineeringand materials science to understand materials degradation mechanisms
and to improve plant life management methodologies for light water
reactors and other nuclear systems.
1. Mechanistic studies in materials degradation of LWR components.
2. Matrials evaluation studies for supercritical water cooled reactors.
3. Development of monitoring methodologies of materials degradationsin their initiation stages.
4. Development of degradation resistant alloys for nuclear systems.
5. Corrosion prediction and prevention studies for safe
decommissioning of Fukushima Daiichi Nuclear Power Station.

Professor
Yutaka WATANABE
Associate Professor
Hiroshi ABEProfessor
Makoto TAKAHASHI(Department assigned：
Safety Engineering of NuclearSystems(Nuclear Energy System SafetyEngineering)

Department of Management
Science and Technology)
Associate Professor
Daisuke KARIKAWA(Department assigned：
Department of Management
Science and Technology)

Particle-Beam Engineering(High Energy MaterialsEngineering)

Professor
Yuji HATANO(Appointed on July 1, 2024)-2-In order to achieve higher level of safety in nuclear power plant, theinteraction between human and machine should be carefully designed. In
our laboratory, the problems of human factors are studied from variety ofviewpoints.
1. Enhancement of organizational safety in nuclear power plant
2. Evaluation of human-machine interface using human brain mapping
method3. Human factor study for air traffic control (ATC) system
4. Diagnosis system for early recognition of cyber attack

Fusion energy is key to a sustainable future. We are developing
plasma-facing materials that can withstand the harsh environment ofhydrogen isotope plasma and high-energy neutrons in fusion reactors.
Additionally, we investigate the behavior of tritium, a crucial fuel andradioisotope of hydrogen, within fusion systems for safe and efficientutilization.
Our research encompasses several key areas:
1. Development of robust plasma-facing materials for fusion reactors
2. Evaluation and control of tritium dissolution, diffusion, andpermeation in fusion reactor materials
3. Purification, separation, and measurement of tritium
4. Hydrogen isotope interactions with lattice defects in materials
5. Study of hydrogen behaviors in nuclear and industrial materials
using tracer techniques.

Laboratory

Particle-Beam Engineering(System Engineering ofParticle-Beams)

Particle-Beam Engineering(Applied Quantum MedicalEngineering)

Particle-Beam Engineering(Advanced Radiation Application)[Branch in Rokkasho-mura]

Particle-Beam Engineering(Nuclear Fuel Science)[Branch in Rokkasho-mura]

Energy Materials Engineering(Irradiation Effects in Nuclear and
Their Related Materials)<Cooperative Laboratories>[Irradiation Effects in Nuclear and
Their Related Materials, IMR]

Professor /Associate Professor

Theme of research

Professor
Shigeo MATSUYAMA
Associate Professor
Yohei KIKUCHI
Associate Professor
Wataru KADA

Particle beams is applicable to fabrication of functional materials,
analysis of specimen, RI production for medical imaging and radiation
therapy. Their applications cover in various fields including engineering,environment, medicine and archeology. Our main research subject issystem engineering of particle-beams which is systemize by combining
the technologies of beam acceleration and optics, the particle irradiation,
RI production and radiation measurements. Especially, we conduct
research on beam focusing and are developing a micro- and nano-beamsystem. The system is combined with particle-induced X-ray emission(PIXE) method and micron-CT and applied for various fields. We also
developing a positron emission tomography (PET) using RI produced byparticle irradiation.

Professor (Concurrent post)
Shigeo MATSUYAMA
Associate Professor
Miho SHIDAHARA

We aim to contribute on future medicine by developing practical andefficient technologies and evaluation methodologies in the field of
nuclear medicine (PET and SPECT) and related imaging modalities.
Detailed projects are listed as follows.
1. Quantification of physiological functions in human body
2. Computer-aided virtual clinical trial for efficient developmentof radioligands
3. Numerical observer model for prediction of detection abilityin medical imaging
4. Radiation dosimetry in both diagnostic and therapeutic
purposesProfessor (Concurrent post)
Shigeo MATSUYAMA
Associate Professor
Keitaro HITOMIOur group focuses on development of compound semiconductor
radiation detectors for advanced radiation applications including ultrahigh resolution PET systems, ultra-high resolution SPECT systems,
photon counting CT systems, and Compton cameras. The main researchsubject of our group is developing material purification methods, crystal
growth methods and detector fabrication technologies for thallium
bromide (TlBr) semiconductor radiation detectors.

Professor (Concurrent post)
Yuichi NIIBORI**
Associate Professor
Seong-Yun KIM

One of the most important problems needing to be solved in nuclear
fuel cycle is the high-level liquid waste management. To minimize thewaste and to reduce the radiotoxicity, our group is mainly engaged in thestudies of chemical separation of fission produces such as
1. Nuclide separation processes of high-level liquid waste using
impregnated adsorbent and ionic liquids.
2. Separation between strontium and yttrium using impregnatedadsorbent to reuse for radiotherapy.
3. Electrochemical of metal speciation in the solution of the
reprocessing plant.

Professor
Yasuyoshi NAGAI
Associate Professor
Koji INOUE
Associate Professor
Takeshi TOYAMA
Associate Professor
Kenta YOSHIDA

We are studying defects, nano-scale precipitates and interface
segregations of impurity/solute atoms in materials. Our target extends
from nuclear materials such as reactor pressure vessel steels and shroudstainless steels to semiconductors such as silicon and silicon-germanium.
We employ positron annihilation [two-dimensional angular correlation ofannihilation radiation (2D-ACAR), coincidence Doppler broadening andpositron lifetime], 3D atom probe and transmission electron microscope.
By combining first-principles calculations and molecular dynamics
simulations using the IMR super-computer with the above experiments
we are clarifying the formation and microscopic structures of these
defects, precipitates and interface segregations.

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Energy Materials Engineering(Nuclear Materials Engineering)<Cooperative Laboratories>[Nuclear Materials Engineering,IMR]

Quantum Theoretic Material
Engineering(Science and Technology ofFunctional Materials)<Cooperative Laboratories>[Environmentally RobustMaterials, IMR]

Quantum Theoretic Material
Engineering(Engineering for ActinideMaterials)<Cooperative Laboratories>[Actinide Materials Science,IMR]

Energy Chemical Engineering(Radiochemistry)<Cooperative Laboratories>[Center for Mineral Processingand Metallurgy, IMRAM]

Professor /Associate Professor

Theme of researchMaterials are key to realize the advanced base-load-energy sources,
such as nuclear fusion and next-generation fission reactors, because they
suffer severe environments including high temperature, high pressure, andhigh-energy-particle bombardment. We are studying nano-particle
dispersion strengthened materials made by mechanical alloying method
and multi-material design towards improvement of environmentalresistance. Structural ceramics like silicon carbide are also other option
currently we are exploring. Our strategy of the material R&D essentiallyincorporates the knowledge of mechanical strengthening even under thecomplex set of loads such as irradiation, liquid metal flow, and high flux
heating. Recently, we are trying to develop and investigate the ultra-small
testing technologies (USTT) such as nanoindentation for mechanicalproperty evaluation and other advanced surface analysis method to test
the specimens under the various environment.

Professor
Ryuta KASADA
Associate Professor
Sosuke KONDO
Assistant Professor
Hao YU
Assistant Professor
Yasuyuki OGINO

Hydrogen intruding into metallic materials used under stress causes
fracture phenomenon, so-called hydrogen embrittlement. Hydrogen
embrittlement is one of the quite important issues of structural materials
used for energy production, automobiles, aircraft, infrastructures and soforth. In our laboratory, we investigate hydrogen uptake in corrosive
environments and behaviors of hydrogen in metals to clarify themechanism of hydrogen embrittlement. We also conduct researchattempting to apply the interaction between hydrogen and phasetransformation for novel structural control.

Professor
Eiji AKIYAMA
Associate Professor
Motomichi KOYAMA
Assistant Professor
Saya AJITO
Assistant Professor
Hiroshi Kakinuma
Professor
Dai AOKI
Associate Professor
Atsushi Miyake
Senior Assistant Professor
Kenji SHIRASAKI
Assistant Professor
Yoshiya HOMMA
Assistant Professor
DeXin LI
Assistant Professor
Ai NAKAMURA
Assistant Professor
Yusei SHIMIZU

The physics of f-electron systems, including both actinide and rare earth
compounds, are an important aspect of strongly correlated electronsystems. A large variety of fascinating phenomena, such as coexistence ofmagnetism and superconductivity, multipole order, quantum criticalphenomena, are found. We grow high quality single crystals of actinide
and rare earth compounds. By means of precise measurements underextreme conditions (low temperature, high field, high pressure), we aim
to discover new phenomena and new physics. We also study actinide
chemistry. Not only domestic collaborations but also international
collaborations are strongly promoted.

“Research on Nuclear Waste Management and Nuclear Facility
Decommissioning by Radiochemistry”
Nuclear energy is one of our modern society's most important energy
resources. Therefore, making the nuclear fuel cycle more reliable isstrongly demanded. Also, decommissioning the severely damaged
reactors by the Fukushima NPP accident in 2011 and recovering thecontaminated environment are urgent issues in Japan. To respond to thesedemands, our group investigates the chemistry of nuclear fuel debris andthe leaching behavior of actinides in it by synthesizing simulated fueldebris with actinide tracers. Furthermore, we are developing novel andunique nuclear waste solidification processes using functional aluminumsilicate minerals as fixation agents.

Professor
Akira KIRISHIMA
Senior Assistant Professor
Daisuke AKIYAMA
Assistant Professor
Yuki YOKOTA-4-Laboratory
Accelerator Radiation
Engineering(Nuclear Radiation Physics andEngineering)<Cooperative Laboratories>

Professor /Associate Professor

Theme of research
We are conducting research on charged-particle therapy which has
physical and biological advantages of charged-particles in cancer
treatment, and boron-neutron capture therapy (BNCT) which selectivelykills cancer cells. Particular attention is paid to development of highprecision irradiation techniques, accelerator-based neutron sources, realtime beam monitoring using micro-pattern gas-detector technologies, andthree-dimensional dose measurements using polymer gel.

Professor
Atsuki TERAKAWAAssistant Professor
Chihiro IWAMOTO[Division of Applied Nuclear
Physics, RARIS]

Notes: if you need more any details information, please tell the Director. 〔Professor Hidetoshi HASHIZUME TEL+81-22-795-7904〕**: Scheduled to retire in March 2025.
* : Scheduled to retire in March 2026.

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