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Report No.

Space radiation dosimetry in Kibo module, 2; Simulation

Sato, Tatsuhiko   ; Nagamatsu, Aiko*; Takeda, Kazuo*; Niita, Koji*; Puchalska, M.*; Sihver, L.*

Estimation of doses for astronauts due to space radiation exposure has been an essential issue in the planning of long-term space missions. For that purpose, we developed a simulation tool for estimating radiation environments as well as doses for astronauts stayed in the Kibo module in ISS. The tool consists of the Particle and Heavy Ion Transport Simulation code, PHITS, in combination with the virtual Kibo module developed by JAXA. The accuracy of the simulation was examined on the basis of the experimental data obtained from the Area PADLES and MATROSHKA-Kibo measurements. It was found from the examination that the calculated doses agree with the measured data fairly well. The results of the examination also suggested that the consideration of the east-west asymmetry is important to reproduce the location-dependence of doses inside the Kibo module.



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