As crewed lunar exploration advances, protecting humans from hazardous ionizing radiation becomes increasingly vital. While passive shielding approaches provide limited protection, electrostatic shielding has emerged as a promising strategy for reducing exposure. This research employed numerical simulations in COMSOL Multiphysics to model the shielding behavior of high-voltage electrode configurations against intense SPEs (Solar Particle Events) and GCRs (Galactic Cosmic Rays). The study was structured around three sets of research objectives. Firstly, it investigated the shielding behavior of a 3D electrode point design, secondly, it conducted design and operational trade studies, and thirdly, it examined the influence of lunar surface charge-induced electric fields on shielding efficacy. The initial setup demonstrated effective shielding against SPEs, particularly protons, with average particle reductions above 70% and energy deposition reductions above 30%. However, shielding against GCRs was limited. Significant power demands were observed due to charged particle impacts on the electrodes, which could be reduced through design adjustments. The overall power demand was estimated to be in the low kW range, remaining well within the feasibility limits of lunar power capabilities. Further optimization potentials were identified by simplifying the anode stack design and employing asymmetric potentials between anodes and cathodes without sacrificing system effectiveness. Additionally, while lunar surface charging could modify particle velocity distributions, its effect on shielding efficacy was negligible when active electrode shielding was in operation. Overall, this research provides valuable insights into the feasibility of electrostatic shielding for lunar habitats, emphasizing the importance of design optimization and the need for integrated shielding strategies to address the complex radiation environment on the Moon.
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As crewed lunar exploration advances, protecting humans from hazardous ionizing radiation becomes increasingly vital. While passive shielding approaches provide limited protection, electrostatic shielding has emerged as a promising strategy for reducing exposure. This research employed numerical simulations in COMSOL Multiphysics to model the shielding behavior of high-voltage electrode configurations against intense SPEs (Solar Particle Events) and GCRs (Galactic Cosmic Rays). The study was str...
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