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2019-07-25

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cc-by-nc-nd (c) Gómez, S. et al., 2019
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/172835

A High Dynamic Range ASIC for Time of Flight PET with monolithic crystals

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https://doi.org/10.22323/1.343.0085

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.

Subject

Circuits integrats d'aplicació específica, Tomografia per emissió de positrons

Subject (English)

Application-specific integrated circuits, Positron emission tomography

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Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

Citation

GÓMEZ, Sergio, et al. A High Dynamic Range ASIC for Time of Flight PET with monolithic crystals. Proceedings of Science. 2019. Vol. 343. ISSN 1824-8039. [consulted: 20 of August of 2026]. Available at: https://hdl.handle.net/2445/172835

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