Development of compact and real-time radiation detector based on SiPM for gamma-ray spectroscopy

Abstract

In this research, a radiation detector based on a silicon photomultiplier (SiPM) and Ce doped Gd 3 Al 2 Ga 3 O 12 (GAGG(Ce)) scintillator was developed for nuclide analysis, and the spectroscopic characteristics were compared with those of an optical-fiber-based radiation detector. The results showed that the developed detector was 1.64-3.86 times more efficient for detection compared to the optical-fiber-based detector, and the R-squared value of the linearity of the developed detector was 0.99760 according to the radiation intensity, demonstrating the best linearity. The optical-fiberbased detector had a poor resolution characteristic with respect to the gamma-ray emission energy, whereas the developed SiPM-based detector had a high resolution of 17.2% at 122 keV (the gammaray emission energy of 57 Co), 13.5% at 356 keV (the gamma-ray emission energy of 133 Ba), 6.9% at 511 keV (the gamma-ray emission energy of 22 Na), and 5.8% at 662 keV (the gamma-ray emission energy of 137 Cs). Furthermore, it was confirmed that the R-squared value in the gamma-ray energy range of 122-662 keV was 0.99860, indicating good linearity. Therefore, the PMT-based radiation detectors used in narrow environments subject to electromagnetic fields can be replaced with the SiPM-based radiation detector by applying the results of this study to miniaturized signal processors. K: Dosimetry concepts and apparatus; Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators) 1Corresponding author.

Silicon Photomultiplier Current and Prospective Applications in Biological and Radiological Photonics

“…One of the first reported SiPM viability studies was conducted for the Tesla Hadron Tile Calorimeter [18], where SiPMs were coupled with a scintillator and a wavelength shifter (WLS) providing unprecedented energy and time resolution in nuclear particle calorimetry compared with PMTs and with hybrid photo-diodes [19][20][21]. This study paved the way to applications in many different research fields [22][23][24][25][26][27][28][29][30]. The SiPM's compactness, robustness and high photon detection efficiency makes them possibly the best miniaturized optical sensors [31].…”

Stable growth of (Ce,Gd)3Ga2Al3O12 crystal scintillators by the traveling solvent floating zone method

“…Therefore, Ce:GGAG has attracted extensive research interest as a high performance scintillation material used in X-ray computer tomography (X-CT) for application in medical imaging, security inspection or industry nondestructive testing etc. [23][24][25][26] Ce:GGAG crystal growth has been conducted by the Czochralski (CZ) method 27 or micro-pulling down (μ-PD) method. 28 Both methods need to be carried out in vacuum or an inert atmosphere to avoid the oxidation of the Ir metal crucible.…”