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Description
For optimize nuclear fusion reactor designs, the need for detailed neutronics analysis is one of the important points, especially in terms of shielding performance and the overall impact on tokamak and facility safety. This study presents an extensive neutronics simulation of a Volumetric Neutron Source (VNS) focusing on the inboard area of a tokamak, coupled with a sector-based evaluation of the neutronics effects on the tokamak and its associated inside of building.
The inboard shielding effectiveness was thoroughly investigated through a layering method analysis using advanced shielding materials. Each layer of the shield blanket (SB) and vacuum vessel (VV) body was configured with shielding materials chosen based on their neutron flux, nuclear heating and dose rate properties. Various advanced shielding materials were applied to the design of shielding space to determine their impact on minimizing neutron flux and heating on ensuring that critical components, particularly the Toroidal Field Coils (TFC), are adequately protected against neutrons over the tokamak operational life.
Furthermore, the study extended beyond the tokamak to explore the neutronics impact on the inside of building. This comprehensive analysis performed 360° simulation of building model with a sector-based tokamak model to map neutronics results throughout the facility. This study could point out potential hazards in areas where additional shielding may be needed to protect equipment and personnel from the neutrons. The integration of these neutronics study findings into the fusion reactor design process is needed. By addressing direct and indirect neutronics impacts, this study supports the development of safer and more efficient design of devices. The outcomes can be enhanced understanding of complex neutronics interactions within tokamak but also contribute to the design and safety, realized for fusion development.
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