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

Sergio Gómez Fernández, Anand Sanmukh, David GASCON, David Sanchez, Joan Mauricio, Ricardo Graciani, Rafel Manera, Lluis Garrido, Lluis Freixes, Jesus Marín, Oscar Vela, Jose-Maria Fernandez (+5 others)
2019 Proceedings of Topical Workshop on Electronics for Particle Physics — PoS(TWEPP2018)   unpublished
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 µm 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
more » ... e, 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 mm 2 pixel, 50 µm 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.
doi:10.22323/1.343.0085 fatcat:rvj6esdxqjg5ric4acnftph3xm