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Título

Front-end circuit for position sensitive silicon and vacuum tube photomultipliers with gain control and depth of interaction measurement

Autor Herrero Bosch, Vicente ; Colom, Ricardo; Gadea, Rafael ; Lerche, Christoph W. ; Cerdá, Joaquín ; Sebastiá, Ángel; Benlloch Baviera, José María
Palabras clave Front-end
Silicon photomultipliers (SiPM)
Application-specific integrated circuits (ASICs)
Positron emission tomography (PET)
Depth of interaction (DOI)
Fecha de publicación 22-feb-2007
EditorElsevier
Citación Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 576(1): 118-122 (2007)
ResumenSilicon Photomultipliers, though still under development for mass production, may be an alternative to traditional Vacuum Photomultipliers Tubes (VPMT). As a consequence, electronic front-ends initially designed for VPMT will need to be modified. In this simulation, an improved architecture is presented which is able to obtain impact position and depth of interaction of a gamma ray within a continuous scintillation crystal, using either kind of PM. A current sensitive preamplifier stage with individual gain adjustment interfaces the multi-anode PM outputs with a current division resistor network. The preamplifier stage allows to improve front-end processing delay and temporal resolution behavior as well as to increase impact position calculation resolution. Depth of interaction (DOI) is calculated from the width of the scintillation light distribution, which is related to the sum of voltages in resistor network input nodes. This operation is done by means of a high-speed current mode scheme.
Descripción 5 pages, 6 figures.-- PACS nrs.: 87.58.Fg; 87.57.−s; 87.61.Ff.-- ISI Article Identifier: 000247330000028.-- Issue title: Proceedings of the 8th International Workshop on Radiation Imaging Detectors (Pisa, Italy, Jul 2-6, 2006).
Printed version published on Jun 11, 2007.
Versión del editorhttp://dx.doi.org/10.1016/j.nima.2007.01.181
URI http://hdl.handle.net/10261/9129
DOI10.1016/j.nima.2007.01.181
ISSN0168-9002
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