X-ray dose rate detection sensor based on GAGG: Ce RL and fiber optic transmission

No report has been made on the properties of radiation dose rate detection using GAGG: Ce scintillator radioluminescence (RL). This report reveals for the first time the properties of GAGG: Ce scintillators combined with photomultiplier tubes (PMTs) as detectors using optical fibers. We have thoroughly investigated the detection performance of two different sizes of GAGG: Ce scintillators. The experimental results show that the combination of the RL signal of the GAGG: Ce scintillator with the PMT signal can be used to accurately measure the dose rate during irradiation. At a constant dose rate of 10 μsv/h, the stability of the count rate during irradiation was kept within 5%. Meanwhile, the deviation of the count rate was also controlled within 5% at different radiation dose rates. The detector exhibits excellent linear response (R2=0.9910 and R2=0.9807) over the dose rate range of 20 μsv/h to 100 μsv/h. This radiation detector based on GAGG: Ce scintillator and optical fiber transmission is expected to be valuable for a wide range of applications in the fields of radiation monitoring, safety and security, and medical diagnostics, thanks to its compact design, high stability detection capability and real-time measurement function.