A Comparative study of space radiation organ doses and associated cancer risks using PHITS and HZETRN

Bahadori, A. A.*; Sato, Tatsuhiko   ; Slaba, T. C.*; Shavers, M. R.*; Semones, E. J.*; Baalen, M. V.*; Bolch, W. E.*

In the present study, organ absorbed doses and dose equivalents are calculated for 50th percentile male and female astronaut phantoms using both the NASA High Charge and Energy Transport Code (HZETRN) to perform one-dimensional deterministic transport and using the Particle and Heavy Ion Transport code System (PHITS) to perform three-dimensional Monte Carlo transport. Code-to-code benchmarks allow for the comparison of differential quantities, such as secondary particle differential fluence, to provide insight into differences observed in integral quantities for particular components of the GCR spectrum.