TY  - JOUR
A1  - Dobynde, M. I.
A1  - Effenberger, Frederic
A1  - Kartashov, D. A.
A1  - Shprits, Yuri Y.
A1  - Shurshakov, V. A.
T1  - Ray-tracing simulation of the radiation dose distribution on the surface of the spherical phantom of the MATROSHKA-R experiment onboard the ISS
JF  - Life sciences in space research
N2  - Space radiation is one of the main concerns for human space flights. The prediction of the radiation dose for the actual spacecraft geometry is very important for the planning of long-duration missions. We present a numerical method for the fast calculation of the radiation dose rate during a space flight. We demonstrate its application for dose calculations during the first and the second sessions of the MATROSHKA-R space experiment with a spherical tissue-equivalent phantom. The main advantage of the method is the short simulation time, so it can be applied for urgent radiation dose calculations for low-Earth orbit space missions. The method uses depth-dose curve and shield-and-composition distribution functions to calculate a radiation dose at the point of interest. The spacecraft geometry is processed into a shield-and-composition distribution function using a ray-tracing method. Depth-dose curves are calculated using the GEANT4 Monte-Carlo code (version 10.00.P02) for a double-layer aluminum-water shielding. Aluminum-water shielding is a good approximation of the real geometry, as water is a good equivalent for biological tissues, and aluminum is the major material of spacecraft bodies.
KW  - Space radiation
KW  - Radiation protection
KW  - Radiation dose calculation
KW  - GEANT4 modeling
KW  - Radiation on the ISS
KW  - MATROSHKA-R
Y1  - 2019
U6  - https://doi.org/10.1016/j.lssr.2019.04.001
SN  - 2214-5524
SN  - 2214-5532
VL  - 21
SP  - 65
EP  - 72
PB  - Elsevier
CY  - Amsterdam
ER  -