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

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...

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Detalles Bibliográficos
Autores: Gómez, Sergio, Sanmukh, Anand, Gascón Fora, David, Sánchez, David, Mauricio Ferré, Joan, Graciani Díaz, Ricardo, Manera Escalero, Rafel, Garrido Beltrán, Lluís, Fernández Varea, José María, Cela, J.M., Freixas, L., Marín, J., Navarrete, J.J., Oller, J.C., Pérez, J.M., Rato, Pedro, Vela Mendes, O.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/172835
Acceso en línea:https://hdl.handle.net/2445/172835
Access Level:acceso abierto
Palabra clave:Circuits integrats d'aplicació específica
Tomografia per emissió de positrons
Application-specific integrated circuits
Positron emission tomography
Descripción
Sumario: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.

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