A High Efficiency fast-Response GAmma detector (HERGA) for the identification of radionuclides and for gamma-ray imaging is presented. The detector is compact, ideal for real-time analysis, with low power consumption, suitable for industrial process control, environmental monitoring and localization of nuclear wastes. A prototype consisting of 16 CsI(Tl) scintillators coupled to photomultiplier tubes (PMTS) with a digital readout was built. The scintillators are arranged in a 4 x 4 matrix; a 7 x 7 mask composed by plastic and tungsten tiles has been used to validate the imaging figures of merit according to coded mask principle. A 2D Kolmogorov-Smirnov pattern recognition statistical method has been developed, allowing to achieve a point spread function (PSF) of a few mrad for pointlike sources. The Minimum Detectable Activity (MDA) was also determined in the case of pointlike radioactive sources.
A high efficiency fast-response gamma detector with mrad pointing capabilities / Altomare, C., Di Venere, L., Pantaleo, F.R., Fanchini, E., Giordano, F., Loparco, F., Morichi, M., Spinelli, P., Swiderski, L.. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 1025:(2022). [10.1016/j.nima.2021.166106]
A high efficiency fast-response gamma detector with mrad pointing capabilities
Pantaleo F. R.;
2022
Abstract
A High Efficiency fast-Response GAmma detector (HERGA) for the identification of radionuclides and for gamma-ray imaging is presented. The detector is compact, ideal for real-time analysis, with low power consumption, suitable for industrial process control, environmental monitoring and localization of nuclear wastes. A prototype consisting of 16 CsI(Tl) scintillators coupled to photomultiplier tubes (PMTS) with a digital readout was built. The scintillators are arranged in a 4 x 4 matrix; a 7 x 7 mask composed by plastic and tungsten tiles has been used to validate the imaging figures of merit according to coded mask principle. A 2D Kolmogorov-Smirnov pattern recognition statistical method has been developed, allowing to achieve a point spread function (PSF) of a few mrad for pointlike sources. The Minimum Detectable Activity (MDA) was also determined in the case of pointlike radioactive sources.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
