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Neutronic assessment is the important foundation of Korean fusion demonstration reactor (K-DEMO) study. Previously, preliminary neutronic calculations using a simplified model have been performed <xref ref-type="bibr" rid="ref1">[1]</xref>, and optimized structure of blanket module and shield material has been derived. Based on the previous calculation results, the...
In a conceptual study of the Korean fusion demonstration reactor (K-DEMO), a water cooled divertor concept applying tungsten monoblock design was primarily considered. As an extension of the study, the purpose of this paper is to find out the design concept meeting the thermomechanical stability for a water cooled high heat flux (HHF) unit through the fluid structural interface (FSI) analysis. The...
Based on the legal framework of the Fusion Energy Development Promotion Law (FEDPL) enacted in 2007, a pre-conceptual design study for the Korean fusion demonstration tokamak reactor (K-DEMO) has been started in 2012. K-DEMO is characterized with its uniqueness of high magnetic field (a magnetic field of 7.4 T at the plasma center), major and minor radii of 6.8 m and 2.1 m, and steady-state operation...
During the conceptual design study on the Korean fusion demonstration reactor (K-DEMO) featured by high magnetic field (BT0 = 7.4 T), R=6.8 m, a=2.1 m, and a steady-state operation [1,2], the 3D neutronics models have been developed to evaluate the main parameters such as neutron wall load (NWL) distribution, tritium breeding ratio (TBR) and nuclear heating. To perform neutronics analysis, 3D global...
Numerical simulation of micro-bumped flip chips mounted on a TSV interposer is conducted to study the thermal performance of the package. The 3D package, which consists of two chips, each dissipating 4W, is evaluated under various conditions with its thermal resistances θja θjb, θjc and θjma determined according to JEDEC or MIL-STD standard. Instead of building the detailed model, equivalent thermal...
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