Characterization of 4 × 4ch MPPC array in scintillation spectrometry

Grodzicka, M.; Moszyński, M.; Szczęśniak, T.; Szawłowski, M.; Baszak, J.

doi:10.1088/1748-0221/8/09/p09020

Cited by 15 publications

(1 citation statement)

References 17 publications

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“…The relevant material properties of selected scintillators. a -Measured in [21] with a Hamamatsu R6231-100 PMT; bby [22] with PMT; cby [23] with a Hamamatsu S11827-3344MG MPPC or XP 2020Q PMT; dby [24] with a SensL MicoFC SiPM; eby [25] with Hamamatsu R6231 PMT; fby [26] with a Hamamatsu TSV MPPC S12642-0404A-50; gby [27] with a Hamamatsu R6231-100HA PMT; hby [28] with a SensL MicroFC-30035-SMT SiPM.…”

Section: A Materials Selectionmentioning

confidence: 99%

Design of 4π Directional Radiation Detector based on Compton Scattering Effect

et al. 2021

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Obtaining directional information is required in many applications such as nuclear homeland security, contamination mapping after a nuclear incident and radiological events, or during the decontamination work. However, many directional radiation detectors are based on directional shielding, made of lead or tungsten collimators, introducing two main drawbacks. The first is the size and weight, making those detectors too heavy and irrelevant for utilization in handheld devices, drone mapping, or space applications. The second drawback is the limited field of view, which requires multiple detectors to cover the whole required field of view or machinery to rotate the narrow field of view detector. We propose a novel 4π directional detector based on a segmented hollow cubic detector, which uses the Compton effect interactions with no heavy collimators. The symmetrical cubical design provides both higher efficiency and 4π detection ability. Instead of traditional two types of detectors (scatterer and absorber) structure, we use the same type of detector, based on GAGG(Ce) scintillator coupled to silicon photomultiplier. Additional advantage of the proposed detector obtained by locating the photon sensors inside the detector, behind the scintillators, which improves the radiation hardness required for space applications. Furthermore, such arrangement flattens the temperature variation across the detector, providing better gain stability. The main advantage of the proposed detector is the ability of 4pi radiation detection for high energy gamma-rays without the use of heavy collimators.

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