Composite scintillation crystal, composite scintillation detector and radiation detector

摘要

The composite scintillation crystal includes a plurality of scintillation crystals A and a plurality of scintillation crystals B. The scintillation crystal A and the scintillation crystal B are scintillation crystals having different performances, and the plurality of scintillation crystals B are arranged as a scintillation crystal B module. A plurality of scintillation crystals A surround the scintillation crystal B module from the radiation incident surface of the scintillation crystal B module, and the sensitivity of the scintillation crystal A is lower than the sensitivity of the scintillation crystal B. The light output performance of the scintillation crystal A is that of the scintillation crystal B. Higher than light output performance. The present invention addresses the problem of incompatibility between sensitivity and count rate by using parameter differences between different scintillation crystals, and through a different choice of sensitivity and light output performance, a large amount of low energy radiation can produce high photon efficiency. Is applied to the scintillation crystal A and allows some high-energy radiation to be applied to the scintillation crystal B with low photon efficiency to prevent SiPM saturation caused by excessive photon generation and together with the scintillation crystal SiPM Effectively address the problem of inadequate dynamic range when using, effectively mitigating the incompatibility of a wide range of count rates with high sensitivity requirements.