Journal of the Korean Physical Society

, Volume 61, Issue 4, pp 653–657 | Cite as

Computational method for analyzing the cumulative ionizing effect from solar-terrestrial charged particles and cosmic rays with geant4

  • Yongho Kim
  • Donghan Kim
  • Seongha Park
  • Yongmyung Seo
  • Yongseok Lee
  • Jongho Seon
Research Papers

Abstract

A computational method for predicting and analyzing the cumulative effect of ionizing radiation in space is presented, taking into account the presence of the charged particles from the Sun and Earth together with the cosmic rays precipitating toward the vicinity of Earth. The method first integrates the population of charged particles along the trajectories of the instrument in space and then transports the charged particles across the shielding material. A novel method of interfacing a sophisticated mechanical design from computer-aided design (CAD) tools is introduced to geometrically model the shielding distribution of the orbiting instrument. The cumulative effect of ionizing radiation across the shielding distribution is then calculated based on the ray-tracing method and on a Monte Carlo simulation with Geant4. A description of this computational method is provided along with results for a representative example often encountered in the development of orbiting space instruments.

Keywords

Computational method Geant4 SPENVIS Total ionizing dose 

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Copyright information

© The Korean Physical Society 2012

Authors and Affiliations

  • Yongho Kim
    • 1
  • Donghan Kim
    • 1
  • Seongha Park
    • 2
  • Yongmyung Seo
    • 2
  • Yongseok Lee
    • 2
  • Jongho Seon
    • 2
  1. 1.College of Electronics and InformationKyung Hee UniversitySeoulKorea
  2. 2.School of Space ResearchKyung Hee UniversitySeoulKorea

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