TY  - JOUR
AU  - Barrientos, L.
AU  - Borja-Lloret, M.
AU  - Casana, J. V.
AU  - Hueso-Gonzalez, F.
AU  - Ros, A.
AU  - Roser, J.
AU  - Senra, C.
AU  - Solaz, C.
AU  - Viegas, R.
AU  - Llosa, G.
PY  - 2023
DA  - 2023//
TI  - System characterization and performance studies with MACACO III Compton camera
T2  - Radiat. Phys. Chem.
JO  - Radiation Physics and Chemistry
SP  - 110922
EP  - 13pp
VL  - 208
PB  - Pergamon-Elsevier Science Ltd
KW  - Compton camera
KW  - Scintillator crystals
KW  - Silicon photomultipliers
AB  - The IRIS group of IFIC-Valencia has developed a Compton camera prototype. The system detectors are made of Lanthanum (III) bromide scintillator crystals coupled to silicon photomultipliers. Two models of silicon photomultipliers arrays with different micro pixel pitch (25 and 50 μm) have been chosen as possible candidates to improve the response of the new system. Characterization studies with a 22Na point-like source have indicated that the 25 μm photodetector provided better performance in terms of energy resolution (5.2% FWHM at 511 keV) and angular resolution (6.9 degrees FWHM at 1275 keV), and more stability with temperature variations. In addition, MACACO III imaging capabilities have been assessed using a structure composed of thirty-seven 22Na point-like sources. Furthermore, in order to evaluate possible ways of improving the system performance, several studies have been carried out by means of simulations both in realistic and performance improved conditions. In this work, the system performance is evaluated for its future application in different areas.
SN  - 0969-806x
UR  - https://doi.org/10.1016/j.radphyschem.2023.110922
DO  - 10.1016/j.radphyschem.2023.110922
LA  - English
N1  - WOS:000962800400001
ID  - Barrientos_etal2023
ER  -