Method for the prediction of the effective dose equivalent to the crew of the International Space Station

El-Jaby, S.*; Tomi, L.*; Sihver, L.*; Sato, Tatsuhiko   ; Richardson, R. B.*; Lewis, B. J.*

This paper describes a methodology for assessing the pre-mission exposure of space crew aboard the International Space Station (ISS) in terms of an effective dose equivalent. In this approach, the PHITS Monte Carlo code was used to assess the particle transport of galactic cosmic radiation (GCR) and trapped radiation for solar maximum and minimum conditions through an aluminum shield thickness. From these predicted spectra, and using fluence-to-doseconversion factors, a scaling ratio of the effective dose equivalent rate to the ICRU ambient doseequivalent rate at a 10 mm depth was determined. Only contributions from secondary neutrons, protons, and alpha particles were considered in this analysis.