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22 results on '"Gerardi, G."'

3. Evaluation of the Spectroscopic Performance of 3D CZT Drift Strip Detectors

Author

Auricchio, N., primary, Caroli, E., additional, Del Sordo, S., additional, Abbene, L., additional, Buttacavoli, A., additional, Principato, F., additional, Gerardi, G., additional, Stephen, J. B., additional, Bettelli, M., additional, Amade, N. Sarzi, additional, Zanettini, S., additional, Zappettini, A., additional, Protti, N., additional, and Altieri, S., additional

Published
2021
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5. New results on high-resolution 3-D CZT drift strip detectors

Author

Abbene, L., primary, Principato, F., additional, Gerardi, G., additional, Buttacavoli, A., additional, Altieri, S., additional, Gong, C., additional, Protti, N., additional, Bettelli, M., additional, Amade, N. Sarzi, additional, Zanettini, S., additional, Zappettini, A., additional, Auricchio, N., additional, Del Sordo, S., additional, and Caroli, E., additional

Published
2020
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20. The 'Livio Scarsi' X-Ray Facility at University of Palermo for Device Testing

Author

M. Quartararo, Gaetano Gerardi, Giuseppe Raso, A.A. Turturici, Leonardo Abbene, Fabio Principato, Francesco Pintacuda, Principato, F., Gerardi, G., Turturici, A. A., Raso, G., Quartararo, M., Pintacuda, F., and Abbene, L.

Subjects
Engineering, Photon, business.industry, Settore FIS/01 - Fisica Sperimentale, X-ray, Gamma ray, Semiconductor device, Fluence, Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin), Semiconductor detector, X-ray facility, semiconductor detectors, digital pulse processing, rad-hard MOSFETs, total ionizing tests, Optics, Absorbed dose, Irradiation, business, Telecommunications
Abstract

In this work, we report on the characteristics of the Livio Scarsi X-ray facility at University of Palermo. The facility is able to produce low energy X rays, within the energy range of 0.1-60 keV, with fluence rates ranging from 105-108 photons/mm2 s. The laboratory is equipped with an innovative digital detection system, based on semiconductor detectors (Si and CdTe detectors), able to provide accurate and precise estimation of the fluence rate, the energy and the exposure of X rays, even at high counting rate conditions. Instrumentation for electrical characterization (DC-AC) of semiconductor devices, for both off-line and on-line (i.e. during the irradiation) measurements, is also available. Total ionizing dose (TID) tests on rad-hard power MOSFET transistors by using both X rays and 60Co gamma rays are presented. The aim of this work is to open up to potential users for low energy X-ray applications.

Published
2015
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21. Characterization of Al-Schottky CdTe detectors

Author

S. Del Sordo, Giuseppe Raso, Leonardo Abbene, Fabio Principato, A.A. Turturici, Gaetano Gerardi, Abbene, L, Gerardi, G, Principato, F, Turturici, A A, Del Sordo, S, and Raso, G

Subjects
Physics, X-ray spectroscopy, Spectrometer, business.industry, Settore FIS/01 - Fisica Sperimentale, Detector, Schottky diode, Biasing, Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin), Anode, CdTe detector, Full width at half maximum, X-ray and gamma ray spectroscopy, Optics, Optoelectronics, Gamma spectroscopy, business
Abstract

In the last decades, great efforts are being devoted to the development of CdTe detectors for high resolution X-ray and gamma ray spectroscopy. Recently, new rectifying contacts based on aluminum (Al) are very appealing in the development of CdTe detectors with low leakage currents and anode pixellization. In this work, we report on preliminary results of electrical and spectroscopic investigations on Schottky CdTe diode detectors (4.1 × 4.1 × 0.75 and 4.1 × 4.1 × 2 mm3) with Au/Ti/Al/CdTe/Pt electrode configuration. The detectors are characterized by very low leakage currents even at room temperature (26 pA at 25 °C under a bias voltage of −100 V for the 2 mm thick detector). Polarization phenomena, typical of CdTe diode detectors, were investigated through electrical and spectroscopic approaches, pointing out the influence of the bias voltage, the temperature and the detector thickness. Good time stability, during a short-term operation of one hour, was observed for both detectors at temperatures below 10 °C and by using an electric field of 5000 V/cm. The detectors exhibited good energy resolution of 1.5 keV (FWHM) at 59.5 keV (T=−25 °C) by using a standard electronic chain. This work was carried out in the framework of the development of portable X-ray spectrometers for both laboratory research and medical applications.

Published
2011
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22. M-VIF: A machine-vision based on information fusion

Author

Gaetano Gerardi, V. Di Gesu, Domenico Tegolo, Di Gesu, V., Gerardi, G., and Tegolo, D.

Subjects
Settore INF/01 - Informatica, Machine vision, Computer science, business.industry, Computation, Machine learning, computer.software_genre, Abstract machine, Information fusion, Software, Computer architecture, active vision, machine vision, image analysis, parallel processing, Artificial intelligence, Architecture, business, computer
Abstract

The authors describe a new architecture for machine vision, which is based on information fusion approach. Its general design has been developed by using a formal computation model that integrates three main ingredients of the visual computation: the data, the models, and the algorithms. The hardware design and the software environment of M-VIF are also given. The simulation of M-VIF is under development on the HERMIA-machine.

Published
1993

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