Pedro Manuel da Cunha Catalão Pires dos Santos is a Researcher at the Center for Nuclear Sciences and Technologies (C2TN), Instituto Superior Técnico, Universidade de Lisboa. He achieved his PhD in Chemistry at Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa (2010), with a focus on the degradation mechanisms of relevant biological compounds induced by oxidizing radicals generated by radiolytic and radiomimetic methods. He is currently responsible for the operation, maintenance and upgrading of an experimental cobalt-60 irradiator and a 10 MeV linear electron accelerator, both belonging to the Ionizing Radiation Facility (IRIS) of C2TN. He has worked on several scientific collaborations within the fields of health, environment and advanced materials research which make use of the ionizing radiations available at IRIS, where he is responsible for the definition and execution of irradiation protocols, dose mappings and dosimetric studies.