Radiation risk assessment for space applications by using PW laser facilities

The map of the radiation doses inside a target chamber during a high-power laser - thin solid target experiments is experimentally measured and theoretically calculated. Maximum values for the integrated doses per laser shot of around tens of mGy per shot are obtained in a direction normal to the target, at a distance of about 30 cm from the laser-target interaction point. The simulated map of the radiation doses around the high-power laser thin foil interaction point is obtained by using the Geant 4 General Particle Source code and the geometry of the experimental setup. The computed radiation doses map present similarities with the experimental doses map.