Temporal Response of Fast and Ultrafast Inorganic Scintillators

Ultrafast inorganic scintillators with excellent radiation hardness are required for future HEP experiments at the energy and intensity frontiers as well as GHz hard X-ray imaging for the proposed MaRIE project. In this paper, we present an investigation on temporal response of fast and ultrafast inorganic scintillators. Temporal response of BaF2:Y, BaF2, YAP:Yb, YAG:Yb, ZnO:Ga, Ga2O3, YAP:Ce, LYSO:Ce, LuYAP:Ce, LuAG:Ce, YSO:Ce and GAGG:Ce was measured by ultrafast MCP-PMTs using cosmic rays and 510 keV γ-rays from a Na-22 source at Caltech, and by 30 keV X-ray bunches of 27 and 50 ps length at the Advanced Photon Source facility of Argonne National Laboratory. Their application for future HEP experiments and GHz hard X-ray imaging is discussed.