| PHITS Homepage Web site of Particle and Heavy Ion Transport code System PHITS. |
| EXPACS Homepage Web site of EXPACS, EXcel-based Program for calculating Atmospheric Cosmic-ray Spectrum. This software enables us to calculate the cosmic-ray spectra and doses anywhere in the atmosphere, using the dose conversion coefficients contained in DDCC. |
| Research Group for Radiation Protection Web site of our research group |
| Japan Atomic Energy Agency Web site of our institute |