A5050054768- Superconducting Materials and Applications
- Fusion materials and technologies
- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Nuclear Materials and Properties
- Nuclear reactor physics and engineering
- Spacecraft and Cryogenic Technologies
- Engineering Applied Research
- Electromagnetic Launch and Propulsion Technology
- Nuclear and radioactivity studies
- BIM and Construction Integration
- Particle Accelerators and Free-Electron Lasers
- Advanced Multi-Objective Optimization Algorithms
- Injection Molding Process and Properties
- Fatigue and fracture mechanics
- Nuclear materials and radiation effects
- Advanced Welding Techniques Analysis
- Welding Techniques and Residual Stresses
- Manufacturing Process and Optimization
- Additive Manufacturing and 3D Printing Technologies
- Chalcogenide Semiconductor Thin Films
- Topology Optimization in Engineering
- Cyclone Separators and Fluid Dynamics
- Combustion and Detonation Processes
- Thermal properties of materials
Korea Institute of Fusion Energy
2014-2024
Korea National University of Transportation
2021
Hyundai Heavy Industries (South Korea)
2001-2008
Korea Basic Science Institute
2003
Seoul National University
2003
The extensive design effort for KSTAR has been focused on two major aspects of the project mission - steady-state-operation capability and advanced tokamak physics. steady state aspect is reflected in choice superconducting magnets, provision actively cooled in-vessel components, long pulse current drive heating systems. incorporated features associated with flexible plasma shaping, double null divertor passive stabilizers, internal control coils a comprehensive set diagnostics. Substantial...
Abstract High-performance long-pulse plasma operation is essential for producing economically viable fusion energy in tokamak devices. To achieve such discharges KSTAR, firstly, the rapid increase temperature of plasma-facing components was mitigated. The poloidal limiter, especially, associated with beam-driven fast ion orbit loss and discrepancy equilibrium reconstructed heated magnetic probes signal drift. ions lost to limiter were reduced by optimizing shape composition neutral beam...
Korea Superconducting Tokamak Advanced Research (KSTAR) program has made significant advances in the development of long pulse and high-performance plasma scenarios, utilizing advantages fully superconducting tokamak. Ten years KSTAR operation have produced outstanding progress control, extending operating window discharges, achieving H-mode up to 1.2 MA current, 90 s at top duration, 2.16 elongation. The unique features device also a record 30 without an edge-localized-mode (ELM) crash,...
The toroidal field (TF) magnet system of Korea Superconducting Tokamak Advanced Research (KSTAR) device consists 16 superconducting coils enclosed in steel cases. TF cases are wedged along the inboard straight legs to sustain in-plane centering forces. inter-coil structures contain adjustable shear keys and conical bolts provide pre-loading direction resist out-of-plane forces, which most critical loads on system. For effective cooling case, a pad-type channel has been designed ensure...
Several types of Lorenz forces and Joule heating generated in the magnet system Korea Superconducting Tokamak Advanced Research (KSTAR) device have been studied numerically analytically. We examined 225 plasma equilibrium states to calculate maximum magnetic determine which state(s) generate such forces. The obtained results are used as input for structural analysis. A precompression should be applied eight-segmented central solenoid (CS) coil assembly prevent free motion each due attractive...
The central solenoid (CS) magnet system of the Korea Superconducting Tokamak Advanced Research (KSTAR) device consists four pairs segmented CS coils and a coil structure. maximum repulsive force between is about 12 MN. functions structure are to apply preload on support during operation. designed axial compression 15 MN at 4.5 K will be applied partly by assembling room temperature with 13.4 thermal contraction difference cool down. Additional given minute adjustment wedges. structural...
The subassembly procedure and relevant tools for the complete 40 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">°</sup> sector assembly as a foundation of ITER machine have been developed to meet technical functional requirements years. Based on concept provided by Organization, detailed purpose-built are Korea Domestic Agency. described in this paper contain an upending tool, lifting radial beam vacuum vessel supports with alignment units. To...
The finite element model of KSTAR central solenoid (CS) magnet has been developed with new smeared orthotropic material properties CS coils and the effective coefficient thermal expansion structures. accuracy structural analysis for assembly cool-down processes is higher than in previous studies. Electromagnetic was performed to evaluate Lorentz forces poloidal field (PF) during a long pulse discharge. analyzed behavior clearly consistent measured data calculated (EM) plasma operation....
Since the recommendation of blanket redesign by 2007 ITER design review, system has been developed in framework integrated product team composed mainly organization and procuring parties. As a part conceptual tasks, Korea domestic agency supported analyses with respect to hydraulic thermal performance inboard shield block.Three dimensional thermo-hydraulic thermo-mechanical model poloidal cooling concept were performed. Two kinds operation scenarios, inductive non-inductive operations,...