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Multilayer radiation shield for satellite electronic components protection.

Hamideh Daneshvar1, Kavoos Ghordoei Milan2, Ali Sadr2,3

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This study introduces advanced multi-layer radiation shields designed to protect sensitive electronics in space. Optimized shields significantly reduce ionizing radiation exposure from protons and electrons compared to traditional aluminum.

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Area of Science:

  • Aerospace Engineering
  • Nuclear Engineering
  • Materials Science

Background:

  • Space missions face significant radiation challenges from electron and proton environments.
  • Protecting sensitive electronic devices from ionizing radiation is crucial for mission success.
  • Existing shielding solutions may not offer optimal protection against diverse space radiation.

Purpose of the Study:

  • To design, optimize, and analyze multi-layer radiation shields for electron and proton space environments.
  • To evaluate the effectiveness of novel shielding materials and configurations for electronic device protection.
  • To demonstrate a practical application of advanced shielding in satellite missions.

Main Methods:

  • Utilized MCNPX code and the Genetic Optimization Algorithm for shield design and optimization.
  • Investigated various suitable materials for localized protection of electronic components.
  • Developed a proton source for shield construction, focusing on Low Earth Orbit (LEO) conditions.
  • Fabricated a sample shield using Aluminum Bronze and molybdenum layers with a copper carrier.

Main Results:

  • Optimized shields showed a 53.3% and 72% greater reduction in total ionizing dose for proton and electron environments, respectively, compared to aluminum.
  • Radiation attenuation coefficients showed good agreement across experimental, simulation, and analytical calculations.
  • The proposed multi-layer shield demonstrated superior protective capabilities.

Conclusions:

  • The developed multi-layer shields offer enhanced protection against space radiation for electronic devices.
  • The design and optimization methodology are effective for creating high-performance radiation shielding.
  • The proposed shields are suitable for implementation in satellite missions requiring robust electronic protection.