external exposure facility Proton Irradiation Facility (IRRAD) F. Ravotti et al., AccApp'15, Washington DC, USA, pp. 182-187 Paul Schofield website IRRAD is the 24 GeV/c proton irradiation facility at CERN, located in the PS accelerator complex, primarily designed for testing the radiation hardness of electronic components and detector materials for high-energy physics experiments at one of the highest proton fluences available internationally. The facility operates during CERN's accelerator runs and access is coordinated through the facility team following CERN radiation protection procedures and facility coordination approval. It has been extended to support radiobiology experiments requiring high-energy proton exposures. Located at CERN.