I-IMAS: A 1.5D sensor for high-resolution scanning

Autor: Sergios Theodoridis, B. S. Avset, M.J. French, Harris V. Georgiou, Robert D. Speller, Nikolaos Manthos, Gary Royle, Ioannis Evangelou, R. Turchetta, P. Gasiorek, Anna Bergamaschi, Geoff Hall, Dionisis Cavouras, F. Psomadellis, Gregory Iles, M. Noy, A. Fant, Renata Longo, A. Galbiati, P.F. van der Stelt, J. Jones, Frixos A Triantis, M Metaxas, Helene Schulerud, J.M. Ostby, C. Venanzi
Přispěvatelé: Fant, A, Gasiorek, P, Turchetta, R, Avset, B, Bergamaschi, A, Cavouras, D, Evangelou, I, French, Mj, Galbiati, A, Georgiou, H, Hall, G, Iles, G, Jones, J, Longo, Renata, Manthos, N, Metaxas, Mg, Noy, M, Ostby, Jm, Psomadellis, F, Royle, Gj, Schulerud, H, Speller, Rd, VAN DER STELT, Pf, Theodoridis, S, Triantis, F, Venanzi, C.
Rok vydání: 2007
Předmět:
Zdroj: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 573:27-29
ISSN: 0168-9002
Popis: We have developed a 1.5 D CMOS active pixel sensor to be used in conjunction with a scintillator for X-ray imaging. Within the Intelligent Imaging Sensors (I-ImaS) project, multiple sensors will be aligned to form a line-scanning system and its performance evaluated with respect to existing sensors in other digital radiography systems. Each sensor contains a 512 x 32 array of pixels and the electronics to convert the collected amount of charge to a digital output value. These include programmable gain amplifiers (PGAs) and analogue-to-digital converters (ADCs). The gain of the PGA can be switched between one or two, to increase the sensitivity for smaller collected charge; the ADC is a 14-bit successive approximation with a sampling rate of 1.25 MHz. The ASIC includes a programmable column fixed pattern noise mitigation circuit and a digitally controllable pixel reset mode block. Here we will describe the sensor design and the expected performance. (c) 2006 Elsevier B.V. All rights reserved. Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment
Databáze: OpenAIRE
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