首页|An entrance window surrounded phoswich design for efficient large-angle Compton-suppressed and low-background GAGG: Ce detector

An entrance window surrounded phoswich design for efficient large-angle Compton-suppressed and low-background GAGG: Ce detector

扫码查看
原文链接
  • NETL
  • NSTL
  • Elsevier
An entrance window surrounded phoswich design of GAGG:Ce/CsI:Tl has been implemented for a low-background and Compton-suppressed detector. Not as the common phoswich detector does, the GAGG:Ce scintillator with the well-type CsI:Tl scintillator entrance window surrounded makes the efficient large-angle Compton suppression. This design also makes results measured by the phoswich detector have no degradation compared with the single GAGG:Ce detector. The Compton continuum and other backgrounds are reduced by identifying the gamma-ray energy depositions in different scintillators using the real-time rise time discrimination (RTD) method. The background rate is suppressed approximately 74%. The peak-to-total (P/T) ratio at ~(137)Cs and ~(60)Co point sources are 0.769 and 0.561, respectively. The Compton suppression is highly efficient at all the energy range of Compton continuums. The reduction of the Compton continuum and other backgrounds and the improvement of the P/T ratio will greatly expand the application range of the GAGG:Ce detector in low-intensity measurements.

Phoswich designGeant4 simulationLarge angleCompton suppressionLow background

H.D. Wang、Jing-Bin Lu、R.P. Li、T.J. Gao、Chengqian Li、Huan Qu、Li-Hua Zhu、Cong-Bo Li、Yun Zheng

展开 >

College of Physics, Jilin University, Changchun, 130012, Jilin, China

School of Physics, Beihang University, 100191, Beijing, China

China Institute of Atomic Energy, 102413, Beijing, China

2023

10.1016/j.nima.2023.168542

Nuclear instruments and methods in physics research, Section A. Accelerators, spectrometers, detectors, and associated equipment

Nuclear instruments and methods in physics research, Section A. Accelerators, spectrometers, detectors, and associated equipment

ISSN：0168-9002
年,卷(期)：2023.1055(Oct.)
  • 21