Multilayer shielding in LEO orbit

Authors

10.22052/1.3.1

Abstract

LEO orbit space radiations in which the protons has the main contribution, have survived devastating effects on electronic components. The damage caused by ionizing protons on the satellite electrical components in the circuit LEO moves was reviewed. By studying the LEO orbit by Shieldose software, the worst-case scenario was evaluated for a satellite. Considering the electronic components based on metal oxide semiconductor (MOS), a design for protection against TID originated from captured protons was done by MULASSIS software based on Monte Carlo calculations. Considering the weight and volume constraints, multiple layers for ionizing dose reduction were studied. Results show that a three-layer combination of shielding materials including low, high and low density materials, which simultaneously optimize the weight and volume, makes the optimum protection.

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References

[1] R. Mangeret, T. Carribre, J. Beaucour. Effects of Material and/or Structure on Shielding of electronic Devices. IEEE Transactions on Nuclear Science. (1996) [2] L. Varga and E. Horvath. Evaluation of Electronics Shielding in Micro-satellites. Defence R&D Canada – Ottawa. (2003). [3] Method for the calculation of radiation received and its effects, and policy for design margins. ESA’s standards. (2008). [4] Local Version of the ESA\'s Space Environment Information System ; www.SPENVIS.oma.be [5] F.Lei, R.Truscott.Mulassis, Multi-Layered shielding simulation. Geant based toolkit for dose calculation. Iee, vol.49, no 6, (2009).
Journal of Radiation Safety and Measurement
Volume 2, Issue 3 - Serial Number 3
September 2013
Pages 1-6

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