This work presents a particular application in which cadmium-zinc telluride (CdZnTe) detectors are used in photoconductive mode in a high-energy computerized tomography system for industrial applications. A first-generation tomography facility has been set up at the University of Bologna, based on a 12-MeV pulsed linear accelerator X-ray source and a single 10x10x2 mm3 CdZnTe detector. The obtained results show that CdZnTe detectors exhibit better timing performances than CdTe detectors, and are thus more suitable for tomographic applications. Special-purpose signal conditioning electronics have been developed in order to compensate slow and fast signal fluctuations induced by temperature variations and Linac instabilities. In such a way, the dynamic range of the detector has been improved up to more than 3 orders of magnitude. A set of images was acquired in order to evaluate the overall performances of the tomographic facility. © 1995 IEEE.
Baldazzi G., Rossi M., Querzola E., Guidi G., Chirco P., Scannavini M.G., et al. (1995). A Radiation Detection System for High-Energy Computerized Tomography using CdZnTe Detectors. IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 42(4), 575-579 [10.1109/23.467911].
A Radiation Detection System for High-Energy Computerized Tomography using CdZnTe Detectors
Baldazzi G.
Investigation
;Rossi M.;Querzola E.;Guidi G.;Chirco P.;Zanarini M.;Casali F.
1995
Abstract
This work presents a particular application in which cadmium-zinc telluride (CdZnTe) detectors are used in photoconductive mode in a high-energy computerized tomography system for industrial applications. A first-generation tomography facility has been set up at the University of Bologna, based on a 12-MeV pulsed linear accelerator X-ray source and a single 10x10x2 mm3 CdZnTe detector. The obtained results show that CdZnTe detectors exhibit better timing performances than CdTe detectors, and are thus more suitable for tomographic applications. Special-purpose signal conditioning electronics have been developed in order to compensate slow and fast signal fluctuations induced by temperature variations and Linac instabilities. In such a way, the dynamic range of the detector has been improved up to more than 3 orders of magnitude. A set of images was acquired in order to evaluate the overall performances of the tomographic facility. © 1995 IEEE.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
