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Title: A High Dynamic Range ASIC for Time of Flight PET with monolithic crystals
Author: Gómez, S.
Sanmukh, A.
Gascón Fora, David
Sánchez, D.
Mauricio, J.
Graciani Díaz, Ricardo
Manera Escalero, R.
Garrido Beltrán, Lluís
Fernández Varea, José María
Cela, J.M.
Freixas, L.
Marín, J.
Navarrete, J.J.
Oller, J.C.
Pérez, J.M.
Rato, P.
Vela Mendes, O.
Keywords: Circuits integrats d'aplicació específica
Tomografia per emissió de positrons
Application-specific integrated circuits
Positron emission tomography
Issue Date: 25-Jul-2019
Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Abstract: The HRFlexToT is a 16-channel ASIC for SiPM anode readout designed for Positron Emission Tomography (PET) applications that features high dynamic range (>8 bits), low input impedance, common cathode connection, high speed and low power (~3.5 mW/ch). The ASIC has been manufactured using XFAB 0.18 mm CMOS technology. The main characteristics of the HRFlexToT, compared to its predecessor, are a new energy measurement readout providing a linear Time Over Threshold (ToT) with an extended dynamic range, lower power consumption and better timing response. Initial measurements show a linearity error below 3%. Single Photon Time Resolution (SPTR) measurements performed using a Hamamatsu MPPC S13360-3050CS (3x3 mm2 pixel, 50 umm cell) shows 30% improvement with respect to the previous version of the ASIC, setting this specification in the order of 141 ps FWHM and reducing 3 times power consumption. It is important to highlight that an SPTR of 141 ps FWHM is, according to the best of our knowledge, the best resolution achieved so far for this sensor. Coincidence Time Resolution (CTR) measurements are expected to be performed during 2018.
Note: Reproducció del document publicat a:
It is part of: Proceedings of Science, 2019, vol. 343
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ISSN: 1824-8039
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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