Engineering of bulk and fiber-shaped YAGG:Ce scintillator crystals

Composition-property correlations have been systematically studied in the full concentration range of Y$_{3}$Al$_{5−x}$Ga$_{x}$O$_{12}$:Ce (YAGG:Ce) scintillator crystals. The most promising compositions for new high energy physics experiments at colliders have been determined with the light output >200% relative to BGO and fast luminescence decay. Codoping with Ca$^{2+}$ provides the decrease of phosphorescence intensity to 0.2% after 0.6 $\mu$s and shortening of the luminescence decay constant to 21 ns. Factors affecting the scintillation decay time in YAGG:Ce have been discussed. The crystals show weak transmission loss under $\gamma$-irradiation. The feasibility to produce YAGG:Ce fibers using the $\mu$-PD method has been shown.