Projects
Multi-scale multi-physics research on fusion plasmas
To harvest energy from controlled nuclear fusion reactions, minimizing plasma turbulent transport and finding an optimal steady state operation are required, which are my main research goals. My research are based on not only a deep understanding of the first principles of the relevant physics of fusion plasmas but also an incorporation of the multi-physics for a systematic study. In nuclear fusion system, physical processes over several length and time scales take place, as shown in the above figure. The plasma response to RF wave is on the time scale of nanoseconds, the response to Magneto-hydrodynamics (MHD) instability is in microseconds, and the response to the turbulence is sub-millisecond. Some of my projects related with (1) RF waves, (2) MHD, (3) turbulence and (4) integrated modeling are described below. The dependence of the multi-physics whose scales are not overlapped is negligible within acceptable errors. Conversely, as the scales of multi-physics are overlapped, they are likely to be interdependent, and consistency is important.
3. Transport
Neoclassical transport
Impurity transport
4. Integrated Modeling
5. Advanced computation
Machine-learning based analysis
Numerical methods for a nonlinear system
6. Nuclear reactor analysis
Computation for nuclear thermal-hydraulics
Computation for reactor neutronics
Fusion reactor design
7. Engineering Design
Design of dipole/quardrupole magnets for accelerators(Opera3D)
8. Semi-conduction Plasma Fabrication
ICP plasma analysis
PIC code development using Monte Carlo collision module