A cubic CeBr3 gamma-ray spectrometer suitable for the decommissioning of the Fukushima Daiichi Nuclear Power Station

Kaburagi, Masaaki; Shimazoe, Kenji; Otaka, Yutaka; Uenomachi, Mizuki; Kamada, Kei; Kim, Kyoung Jin; Yoshino, Masao; Shoji, Yasuhiro; Yoshikawa, Akira; Takahashi, Hiroyuki; Torii, Tatsuo

doi:10.1016/j.nima.2020.164118

Cited by 9 publications

(5 citation statements)

References 24 publications

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“…Furthermore, it has a very short decay time (~19 ns), a density of 5.18 g/cm 3 , and wavelength of maximum emission at 380 nm. These properties render this material attractive, and thus, it would be worth examining its X-ray detection properties for medical applications [24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

“…CeBr 3 has been used in TOF-PET, in dual nuclear and fluoroscopic detectors, in gamma-ray spectrometers, in Compton scattering tomography, in extreme environments applications, in astronomy, etc. [24][25][26][30][31][32][33][34][35][36][37][38][39]. Regarding its application in the field of materials processing, it has also been proposed as an alternative radiation detector for screening purposes in the steel production industry.…”

Section: Introductionmentioning

confidence: 99%

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Cerium Bromide Single-Crystal X-Ray Detection and Spectral Compatibility Assessment with Various Optical Sensors

Linardatos

Velissarakos

Valais

et al. 2022

Material Design & Processing Communications

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Scintillators with high light yield (LY) values are of interest for medical imaging applications, in harsh environments, nondestructive testing (NDT), etc. CeBr3 has a LY of 60000 photons per MeV, a value much higher than other efficient materials, such as Lu3Al5O12:Ce (25000 photons/MeV); thus, its X-ray detection properties would be of interest to be examined for medical imaging applications. The X-ray detection and absorption properties of a single crystal CeBr3 sample along with the compatibility of its produced light with various optoelectronic sensors were examined. In this study, the quantum detection (QDE) and the energy absorption efficiency (EAE) of CeBr3 were calculated. The findings were compared with data for 10 × 10 × 10 m m 3 Lu3Al5O12:Ce and CaF2:Eu single crystals. The measured optical spectrum produced by CeBr3 was well correlated with the spectral response of commercial optical sensors, yielding spectral matching higher than 93% for various photocathodes, e.g., GaAs (94%), E-S20 (95%), and bialkali and multialkali (95-97%), as well as with flat panel position-sensitive photomultipliers (95-99%). The energy absorption properties of CeBr3 were found higher than those of Lu3Al5O12:Ce and CaF2:Eu for X-ray tube voltages greater than 100 kVp. The quantum detection efficiency was 100% across the examined energy range. Even though CeBr3 is hygroscopic and has a mediocre 5.1 g/cm3 density, the QDE, EAE, and spectral correlation results are promising for medical imaging applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cerium Bromide Single-Crystal X-Ray Detection and Spectral Compatibility Assessment with Various Optical Sensors

Linardatos

Velissarakos

Valais

et al. 2022

Material Design & Processing Communications

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“…HR-GAGG has high light yield (40000-50000 photons/MeV), moderate decay time (∼400 ns), and good energy resolution (5%@662 keV). Alternatively, CeBr 3 scintillator possesses more desirable characteristics, including an excellent light yield (>60000 photons/MeV), an excellent decay time (∼19 ns), and a higher energy resolution (<4%@662 keV) [5][6][7], realizing high energy and time resolution that are of importance for Compton-PET hybrid camera. Herein, we developed a novel CeBr 3 based instrumentation system.…”

Section: Introductionmentioning

confidence: 99%

Development of Compton-PET hybrid imaging system with CeBr₃-SiPM arrays

Uenomachi

Shimazoe²,

Orita³

et al. 2022

J. Inst.

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Positron emission tomography (PET) and single photon emission computed tomography (SPECT) are both established imaging technologies in nuclear medicine that are clinically available. However, simultaneous PET and SPECT nuclide imaging is difficult to accomplish with current equipment because of their distinct principles. In light of this, we have developed and demonstrated a GAGG scintillator based Compton-PET hybrid imaging system capable of performing PET and Compton imaging simultaneously. Alternatively, the CeBr3 scintillator possesses more desirable properties, including a high light yield (>60000 photons/MeV), a fast decay time (∼19 ns), and an excellent energy resolution (<4%@662 keV). Herein, we developed an 8 × 8 array of CeBr3 detector based instrumentation by using 64 channel fast signal processing slew rate limited Time over Threshold (ToT) based application-specific integrated circuits and a field programmable gate array ToT data acquisition system with a 62.5 ps accuracy. Furthermore, we evaluated the system’s basic performances. The mean and greatest energy resolutions were 10.1% and 6.0% (FWHM) for 662 keV. The time resolution was 239 ps (FWHM) after offset calibration. We also achieved a proof-of-concept based on single source.

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“…Using this technique, they weakened the influence of signal accumulation. They reached the highest dose rate of 2.221 Gy/h with a detector count rate of (1.22 ± 0.0032) Mcps and a dead time of (81.9 ± 0.31) % [11,12].…”

Section: Introductionmentioning

confidence: 99%

A novel MPPC-based detection method for wide range X/γ radiation dose rate measurement

Zhang

Tong

et al. 2022

J. Inst.

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With the increasing application of nuclear technology in many fields, in order to meet the requirements for the measurement range of nuclear radiation dose rate in different fields, a new X/γ dose rate measurement method is proposed in this paper. Using MPPC to couple CsI(TI) scintillator, combined with continuous periodic charges integration electronics, a detector system was developed. It enables MPPC to work in two different regions, avalanche and proportional, and realizes a wide range of dose rate measurement through gain changes between different regions. In experiments, this method measured the γ radiation dose rate in radiation fields between 0.1 μGy/h to 400 Gy/h 60Co. Additionally, it measured an energy resolution for 137Cs at 9.4% at a dose rate of 1 mGy/h. These results demonstrate that this method is both accurate and feasible.

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A cubic CeBr3 gamma-ray spectrometer suitable for the decommissioning of the Fukushima Daiichi Nuclear Power Station

Cited by 9 publications

References 24 publications

Cerium Bromide Single-Crystal X-Ray Detection and Spectral Compatibility Assessment with Various Optical Sensors

Cerium Bromide Single-Crystal X-Ray Detection and Spectral Compatibility Assessment with Various Optical Sensors

Development of Compton-PET hybrid imaging system with CeBr₃-SiPM arrays

A novel MPPC-based detection method for wide range X/γ radiation dose rate measurement

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A cubic CeBr3 gamma-ray spectrometer suitable for the decommissioning of the Fukushima Daiichi Nuclear Power Station

Cited by 9 publications

References 24 publications

Cerium Bromide Single-Crystal X-Ray Detection and Spectral Compatibility Assessment with Various Optical Sensors

Cerium Bromide Single-Crystal X-Ray Detection and Spectral Compatibility Assessment with Various Optical Sensors

Development of Compton-PET hybrid imaging system with CeBr3-SiPM arrays

A novel MPPC-based detection method for wide range X/γ radiation dose rate measurement

Contact Info

Product

Resources

About

Development of Compton-PET hybrid imaging system with CeBr₃-SiPM arrays