A5090155055- Fusion materials and technologies
- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Nuclear Materials and Properties
- Particle accelerators and beam dynamics
- Nuclear reactor physics and engineering
- Spacecraft and Cryogenic Technologies
- Laser-Plasma Interactions and Diagnostics
- Nuclear Physics and Applications
- Particle Accelerators and Free-Electron Lasers
- Diamond and Carbon-based Materials Research
- Graphite, nuclear technology, radiation studies
- High-pressure geophysics and materials
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Various Chemistry Research Topics
- Physics of Superconductivity and Magnetism
- High-Energy Particle Collisions Research
- Ion-surface interactions and analysis
- Plasma Diagnostics and Applications
- Gyrotron and Vacuum Electronics Research
- Ionosphere and magnetosphere dynamics
- Muon and positron interactions and applications
- Cyclone Separators and Fluid Dynamics
- Magnetic Properties and Applications
YKK (Japan)
2025
National Institutes for Quantum Science and Technology
2017-2019
CEA Cadarache
2017
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2017
Japan Atomic Energy Agency
2005-2015
Russian Academy of Sciences
2007
Advanced Science Research Center
1995-2005
Institute for Atomic Energy Research
2004
Mount Fuji Research Institute
2004
Fusion performance of reversed shear discharges with an L-mode edge has been significantly improved in a thermonuclear dominant regime up to 2.8 MA plasma current the JT-60U tokamak. The core energy is efficiently confined due existence persistent internal transport barriers formed for both ions and electrons at large minor radius $r/a\ensuremath{\sim}0.7$ near boundary region. In assumed deuterium-tritium fuel, peak fusion amplification factor defined transient conditions involving $dW/dt$...
Ferritic steel tiles (FSTs) have been installed to improve the energetic ion confinement by reducing a toroidal magnetic field ripple. Aiming at cost-effective installation, orbit-following calculations of ions were carried out for design installation ferritic on JT-60U using fully three dimensional Monte-Carlo (F3D OFMC) code, which had developed insert experiments JFT-2M and can treat complex structure produced inserts. The FSTs add non-linear sensors plasma control an equilibrium...
Supersonic molecular beam injection (SMBI) was successfully operated in JT-60U after improving the performance of vacuum seal used inside injector head. Frequent density jumps were clearly observed main plasma against SMBI pulses with filling gas pressures ( P FG ) 0.2–0.6 MPa. The fuelling efficiency exhibited a weak dependence on and direction (high- low-field-side injections). amount necessary for achieving same level is much smaller than puffing. It comparable pellet even shallower...
Modification for long pulse operation up to 65 s with a neutral beam heating power of 12 MW (30 s) has provided an opportunity studies on plasma-wall interaction time scale tens seconds. During pulse, ELMy H-mode discharge, the net wall-pumping rate, evaluated by particle balance analysis, gradually decreases, and subsequently, becomes zero in ∼20 after injection starts. This situation is interpreted as 'wall saturation'. Wall saturation observed repetitive discharges. Although outgas due...
Variation of particle absorption at the first wall has been investigated in long-pulse (∼30 s) ELMy H-mode discharges on JT-60U. Quantitative analysis balance indicated that inventory was globally saturated with a time scale 10–15 s after several discharges. To understand mechanisms global saturation, distribution local saturation calculated from ion and neutral fluxes to evaluated using Monte-Carlo transport code. The estimated be shorter than 1 divertor plates dome, ∼10 lower half baffle...
The JT-60SA experimental device will be the world's largest superconducting tokamak when it is assembled in 2019 Naka, Japan (R = 3 m, a 1.2 m). It being constructed jointly by institutions EU and under Broader Approach agreement. Manufacturing of six NbTi equilibrium field (EF) coils, which have diameter up to 12 has been completed. So far, 13 18 toroidal (TF) each 7-m high 4.5-m wide, also manufactured tested at 4 K dedicated test facility France. first three four Nb3Sn central solenoid...
QST, as Japan Domestic Agency in ITER, has responsibility to procure 9 ITER Toroidal Field (TF) coils and all 19 TF Coil Cases (CC). The are procured by two suppliers accelerate their production. series production of Double-Pancakes (DPs) Winding Pack (WP) progress both manufacturing lines. 55 DP windings, 40 impregnation curing, 3 WPs 8 CCs have been completed. Series coil WP CC progressing Japan. Assembly is proceeding gap-filling was completed the first coil. Since remaining process only...