Individual patient shielding for a proton eye therapy facility

Abstract

Abstract The first proton ocular radiotherapy facility in Poland has been developed at the Institute of Nuclear Physics (IFJ PAN), Krakow, in collaboration with the Clinic of Ophthalmology and Ocular Oncology of the Collegium Medicum of the Jagiellonian University in Krakow and the Centre of Oncology of the Maria Sklodowska–Curie Memorial Institute Krakow Branch. For the proton beam from the AIC-144 isochronous cyclotron the unwanted patient dose due to secondary radiation - predominantly neutrons - has been evaluated using the MCNPX code. Optimisation of the beam forming elements and designing of the additional patient shielding has been performed to minimize the unwanted patient’s dose.