Design optimization of a truncated cone-shaped LaBr3:Ce/NaI:Tl phoswich detector based on GEANT4 simulation
نویسندگان
چکیده
The anti-Compton phoswich (ACP) detector, which is composed of multiple scintillators with one photomultiplier tube, takes into account the Compton suppression function and portability, therefore, a discussion on how to design its shape improve performance detector has become necessary. Based an ACP using well-typed LaBr3:Ce/NaI:Tl composite scintillator that been developed in laboratory early work, this study uses GEANT4 simulate influence change size secondary such as ratio, energy resolution, full-energy peak (FEP) loss. In course study, we mainly investigate variation two ways. First, inclination angle truncated cone gradually changed compare FEP address ratio. Second, case well-shaped annular-shaped compared, respectively, find out their impact resolution address. final results show that, compared φ75 × 90 mm2 cylindrical scintillator, cone-shaped 0.8 may have equivalent 137% light yield (137% signal-to-noise ratio), ratio 89.62% (at 662 keV), 89.98% FWHM volume reduction 36.74%, means weight reduced by 2.107 kg.
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ژورنال
عنوان ژورنال: AIP Advances
سال: 2023
ISSN: ['2158-3226']
DOI: https://doi.org/10.1063/5.0138163