A gamma-ray imaging camera for ambient radioactivity detection
- Resource Type
- Authors
- Erica Fanchini; F. R. Pantaleo; F. Loparco; Corrado Altomare; Massimo Morichi; P. Spinelli; Francesco Giordano; L. Swiderski; L. Di Venere
- Source
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 981:164492
- Subject
- Physics
Nuclear and High Energy Physics
Physics::Instrumentation and Detectors
Point source
business.industry
ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
Astrophysics::Instrumentation and Methods for Astrophysics
Gamma ray
Reconstruction algorithm
Scintillator
010403 inorganic & nuclear chemistry
01 natural sciences
030218 nuclear medicine & medical imaging
0104 chemical sciences
law.invention
03 medical and health sciences
0302 clinical medicine
Silicon photomultiplier
Optics
law
Proof of concept
business
Instrumentation
Image resolution
Gamma camera
- Language
- ISSN
- 0168-9002
The aim of this work is to design a camera for gamma-ray imaging based on the coded mask technique widely used in astrophysics. The camera proposed is a compact, lightweight instrument, ideal for real-time analysis, with a low power consumption. The proof of concept consist in 16 CsI(Tl) scintillators coupled to photo-multiplier tubes (PMTs) with a digital readout. The scintillators are arranged in a 4 × 4 matrix and packaged in a metallic frame. We used a 7 × 7 mask composed by transparent and opaque tiles to encode and decode a radioactive gamma-rays point source image through a reconstruction algorithm. The system was tested using gamma-ray radioactive sources placed at a fixed distance from the mask. The performance of the prototype camera in terms of energy and spatial resolution will be shown. An upgrade of this prototype will employ Silicon Photomultipliers (SiPMs) in place of the PMTs. A comparison of the two configurations will be also provided.