2-inch size single crystal growth and scintillation properties of new scintillator; Ce:Gd3Al2Ga3O12

In this report 2inch size Ce:Gd
₃
Al
₂
Ga
₃
O
₁₂
(Ce:GAGG) single crystals were grown by the Czhocralski (Cz) method. Luminescence and scintillation properties were measured. In order to determine light yield the energy spectra were collected under 662 keV γ-ray excitation(
¹³⁷
Cs source) were detected by a APD S8664-55(Hamamatsu). The light yield of CeGAGG sample was calibrated from
⁵⁵
Fe direct irradiation peak to APD. The light yield was around 46,000photon/MeV. Energy resolution was 4.9%@662keV by using 3×3×1mm size sample. The density of CeGAGG is theoretically 6.63 g/cm
³
. Further results will be reported in the presentation.