Temperature response of several scintillator materials to light ions

Ion beam induced luminescence has been used to study the response of scintillator screens of YO:Eu (P56) and SrGaS:Eu (TG-Green) when irradiated with light ions (protons, deuterium and helium particles). The absolute efficiency of the samples has been studied as a function of the ion energy (with energies up to 3.5 MeV), the beam current and the operating temperature. The evolution of the scintillator yield with ion fluence has been carried out for all the scintillators to estimate radiation damage. Finally, measurements of the decay time of these materials using a system of pulsed beam accelerated particles have been done. Among the screens under study, the TG-Green is the best suited material, in terms of absolute efficiency, temporal response and degradation with ion dose, for fast-ion loss detectors in fusion devices.This research was supported in part by the Spanish Ministry of Economy and Competitiveness through the projects RYC-2011-09152, ENE2012-31087 and FIS2015-69362-P (MINECO/FEDER, UE) and the Marie Curie FP7 Integration Grant (No. PCIG11-GA-2012-321455) and the V Plan propio de la Universidad de Sevilla (VPPI-US).Peer Reviewe