The response of a fast phosphor screen scintillator (ZnO:Ga) to low energy ions (0–60 keV)^a)

ZnO:Ga is a promising, high time resolution candidate for use as a fast-ion-loss detector in TJ-II. We compare its ionoluminescence with that of the standard fast-ion-loss detector material, $SrGa2S4:Eu$ (also known as TG-Green), when irradiated by $H+$ ions with a range of energies $E≤60keV$ using a dedicated laboratory setup. It is found that ZnO:Ga is a reasonably good candidate for detecting low energy $(E<60keV)$ ions as it has excellent time resolution; however, its sensitivity is about 100 times lower than TG-Green, potentially limiting it to applications with high energy ion loss signals.