Significant improvement of GAGG:Ce based scintillation detector performance with temperature decrease

• DOI: 10.1016/j.nima.2017.07.045
• Publication Date: 2017-07-26T18:45:52Z
• Authors: M. Korjik; V. Alenkov; A. Borisevich; O. Buzanov; V. Dormenev; G. Dosovitskiy; A. Dosovitskiy; A. Fedorov; D. Kozlov; V. Mechinsky; R.W. Novotny; G. Tamulaitis; V. Vasiliev; H.-G. Zaunick; A.A. Vaitkevičius
• Keywords: Silicon Photomultiplier; SIGNAL (programming language)

This report presents results on the significant improvement of GAGG:Ce based scintillation detector performance with temperature decrease. When temperature of a PMT based detector is lowered to -45o C, its amplitude response at registration of γ-quanta is improved by 30%; FHHM was found to be better up to factor of 0.85, whereas scintillation kinetics become even faster in crystals co-doped with magnesium and magnesium and titanium. All this opens an opportunity for a wide application of GAGG scintillation detectors, particularly in a combination with SiPM photo-sensors, which signal-to-noise ratio would also improve with temperature decrease.