Multilayer radiation shield for satellite electronic components protection

Title	Multilayer radiation shield for satellite electronic components protection
Authors	Hamideh Daneshvar, Kavoos Ghordoei Milan, Ali Sadr, Seyed Hassan Sedighy, Shahryar Malekie, Armin Mosayebi
Magazine	Scientific Reports
Date	10/19/2021
DOI	10.1038/s41598-021-99739-2
Introduction	This study details the design, optimisation, and analysis of multi-layer radiation shields for protecting satellite electronic components from electron and proton radiation in space. The design methodology involved using MCNPX code and a Genetic optimisation Algorithm to select appropriate materials for local shielding of sensitive electronics. Optimisation results demonstrated that these multi-layer shields achieved a total ionising dose reduction of 53.3% and 72% compared to an aluminium shield in proton and electron environments, respectively. Given that protons play a critical role in Low Earth Orbit (LEO) environments, the shield's construction prioritised mitigating proton radiation. A prototype shield, fabricated from Aluminium Bronze and molybdenum layers with a copper carrier, was developed to validate the concept. Experimental, simulation, and analytical calculations of radiation attenuation coefficients showed strong agreement. The performance characteristics of these multi-layer shields underscore their suitability for protecting electronic devices in future satellite missions.
Quote	Hamideh Daneshvar, Kavoos Ghordoei Milan and Ali Sadr et al. Multilayer radiation shield for satellite electronic components protection. Sci Rep. 2021. Vol. 11. DOI: 10.1038/s41598-021-99739-2
Element	Aluminum (Al) , Copper (Cu) , Molybdenum (Mo)
Materials	Metals and Alloys
Industry	Aerospace , Electronics , Space , Nuclear Energy