The Department of FUSION SCIENCE provides specialized subjects that are essential for studying fusion science from basic principles to cutting edge topics. This department also manages the Comprehensive Subjects Program (an interdepartmental program) and common subjects offered by the School of Physical Sciences. (See the table below for details.)

※ Requirements for Graduation

  • Enrollment in a department of SOKENDAI for five years (three years for the 3-year course) or more.
  • Earning at least 42 credits as prescribed by the course registration rules (12 credits for the 3-year course).
  • Having received the necessary research supervision by a supervisor, and having successfully completed a doctoral thesis and the final examination.
  • A student recognized by his/her department as a “student that has accomplished outstanding research results” may graduate before completing the required period of attendance.
Subject Credit Content of Subject
Plasma Physics I 2 Fundamentals to learn plasma physics are lectured. First of all, single charged particle motions, then plasma behavior as fluids, diffusion, and waves in plasmas are explained. For the basic fusion plasma study, magnetohydrodynamics, equilibrium and stability are alsoexplained. Introductions to the kinetic theory and nonlinear effects are performed for advanced studies.
Plasma Physics II 2 Fundamental physics concepts for understanding the characteristic of fusion plasmas which are necessary in the plasma research will be described. Both aspects of the microscopic particle property and the macroscopic fluid property in the plasma behavior will be explained. The contents are composed of motion of a charged particle in various electromagnetic fields, relations between the distribution function in velocity space and the plasma fluid description, magnetohydrodynamic equilibrium and stability, waves in plasmas, basic idea of transport and resistivity and so on.
Fundamentals of
Plasma Experiment
2 The aim of the lecture is to learn error analysis for allowing the scientists to estimate how large his uncertainties are, and to help him to reduce them when necessary. The basics of plasma diagnosis are reviewed. The error analysis based on the mathematical statistics and the least-squares fitting as its application are studied. The normal distribution and other important distributions are treated.
Advances in Plasma
Science
2 The basic physics of plasma transport at the peripheral region and plasma-wall interaction in magnetically confined fusion devices are explained. Especially, the divertor system receives and should handle huge heat flux coming from main plasma. The lecture presents the history of the divertor development and critical issues for next step fusion devices. In addition, the basics of atomic and molecular processes applied in fusion and related plasma researches are given, including atomic and molecular physics. Kinetics of chemical reactions, and collisionalradiative model for spectroscopic diagnostics.
Fusion System
Engineering
2 This lecture is an introduction to fusion engineering. Features and functions of fusion power plant systems and their subsystems such as superconducting magnets, heating devices, divertor, and blankets are reviewed. Concerning the magnets, properties of materials at low temperatures and superconductivity are reviewed, and their issues are discussed. In addition, technical issues of divertor and blankets for high heat flux and neutron irradiation are discussed.
Fusion Reactor
Materials
2 Theories of elasticity, plasticity, strengthening and radiation damage of materials are reviewed. Tensile testing is explained as a major examination for materials, leading to a lesson in evaluation procedures and analyses on the test results. Materials adopted for the ITER, and candidate materials promising for future demonstration (DEMO) reactors are introduced including key properties. Based on the gap between neutron irradiation conditions and operation temperatures in the ITER and DEMO reactors, improvements of properties are discussed with some examples of recent fusion materials development.
Fundamentals of
Simulation Science
2 Learn the basic methods of computer simulation, a powerful tool for investigating complex plasma phenomena. Concepts, basic equations, algorithms, typical simulations performed by practical programs, their visualizations, limitations and numerical errors are described for particle and fluid models commonly used in plasma simulations.
Mathematical Physics 2 Various methods of mathematical physics are used to treat complex physical systems such as plasmas in which diverse collective phenomena are produced by a huge number of charged particles interacting with each other through electromagnetic force. This lecture presents basic methods of mathematical physics used in analytical and statistical mechanics. As examples of application, one learns plasma kinetic theory, fluid model, and transport theory.
Scientific English
Writing and Presentation
at International
Conferences
2 Because international collaboration is often required for the successful development of magnetic fusion energy, as seen in the case of ITER, the ability of communication in English is a “prerequisite” to be a successful research scientist. A series of lectures will provide students with the basic knowledge to write and present technical papers in English for international conferences, also with practice in reading technical literature and a with a review of relevant grammatical topics.
Fusion plasma science
exercise I A
2 Exercises of experimental, theoretical and simulation science are given by advisering professors and other teachers. Discussions on the processes and results of research are guided which are necessary to complete educational course.
Fusion plasma science
exercise I B
2
Fusion plasma science
exercise II A
2
Fusion plasma science
exercise II B
2
Fusion plasma science
exercise III A
2
Fusion plasma science
exercise III B
2
Fusion plasma science
exercise IV A
2
Fusion plasma science
exercise IV B
2
Fusion plasma science
exercise V A
2
Fusion plasma science
exercise V B
2
Fusion plasma science
investigation I A
2 Seminar is organized for small number of students on fusion plasma science. Basic scientific knowledge, intelligence and flexibility are trained for the basis of original research. Teachers in the same research field as students lead seminar as core members.
Fusion plasma science
investigation I B
2
Fusion plasma science
investigation II A
2
Fusion plasma science
investigation II B
2
Fusion plasma science
investigation III A
2
Fusion plasma science
investigation III B
2
Fusion plasma science
investigation IV A
2
Fusion plasma science
investigation IV B
2
Fusion plasma science
investigation V A
2
Fusion plasma science
investigation V B
2
Exercise of scientific
paper analysis
2 To write academic papers, it is important to conduct excellent research, but in fact it alone is not enough. “Method of research” differs depending on each theme, but there is a common “method of writing” when summarizing results of research as an academic paper. Rather than merely listing the research results, a story from the intro to the conclusion is necessary. How to make this story will be explained as a “way of writing”.
Fusion plasma science
seminar
2 Learn latest information on research activities by attending colloquiums on fusion plasma sciences. Improve students’ ability of preparing and talking their presentations and learn techniques for making an excellent presentation. Study how to examine their own and others’ researches on fusion plasma sciences by joining the discussions in the colloquiums.
Basic exercise on physics and engineering Ⅰ 2 This exercise program gives you the basic knowledge to start experimental research on fusion plasma science. The program provides lectures and practices on the most important technologies in (1) vacuum instruments, (2) electrical and optical signal measurement systems, and (3) high current / voltage power supply usage and design. This knowledge is useful for studying not only fusion plasmas such as LHD plasmas, but also basic laboratory plasmas.
Basic exercise on physics and engineering Ⅱ 2 In this exercise program, the bases of the following techniques are given:
– the handling of the radiation, which is necessary for safe experimental study in fusion experimental devices
– the handling of the cryogenic system including the high pressure gas facility that is acquired for the superconducting coil and cryogenic system in fusion experimental devices.
– the handling of facilities of material analyses and fabrications which are necessary for studies of plasmawall interactions and the fusion engineering.
Basic exercise on physics and engineering Ⅲ 2 This exercise program gives the basic knowledge of data processing, theoretical analyses, and numerical simulations which are required in plasma physics researches. In particular, data and image processes (visualizations), fundamentals of simulation studies for UNIX and Fortran programing, and applied mathematics such as vector analyses and complex analyses will be practiced.