Images obtained by flood-field Co57 irradiation of CsI(T1) crystal arrays detectors, coupled to a metal-channel dynode PSPMT, were statistically analyzed by means of a bivariate normal distribution. For each crystal position, the planar distribution charge was described by a confidence ellipse chosen to maximize the 1-to-1 relationship between the photons incoming at each crystal and the centroid obtained from electric charge distribution. The flood-field irradiation response of a 22 mm x 22 mm CsI(T1) array, with different pixel dimensions, were studied, and the comparison between the charge distribution of a limited number of crystals following the flood-field irradiation was made. (C) 2002 Elsevier Science B.V. All rights reserved.
Statistical description of response to flood-field irradiation in scintillation crystal arrays / C., Bonifazzi; Cinti, Maria Nerina; A., Tartari; Pellegrini, Rosanna; Pani, Roberto. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - STAMPA. - 497:1(2003), pp. 179-185. (Intervento presentato al convegno 1st Topical Symposium on Functional Breast Imaging with Advanced Detectors tenutosi a ROME, ITALY nel APR 18-21, 2001) [10.1016/s0168-9002(02)01909-5].
Statistical description of response to flood-field irradiation in scintillation crystal arrays
CINTI, Maria Nerina;PELLEGRINI, Rosanna;PANI, Roberto
2003
Abstract
Images obtained by flood-field Co57 irradiation of CsI(T1) crystal arrays detectors, coupled to a metal-channel dynode PSPMT, were statistically analyzed by means of a bivariate normal distribution. For each crystal position, the planar distribution charge was described by a confidence ellipse chosen to maximize the 1-to-1 relationship between the photons incoming at each crystal and the centroid obtained from electric charge distribution. The flood-field irradiation response of a 22 mm x 22 mm CsI(T1) array, with different pixel dimensions, were studied, and the comparison between the charge distribution of a limited number of crystals following the flood-field irradiation was made. (C) 2002 Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
