Sergio Gomez received his M.S. degree in Telecommunication Engineering in 2009 and his PhD degree in Electronics in 2014 both from UPC. From May 2014, he joined the instrumentation team at the ICCUB. In March 2022, he won a position as a Serra Hunter tenure-eligible lecturer at UPC. His main expertise is on the development of readout electronics for fast timing detectors. Sergio Gomez holds two patents and has authored several peer-reviewed journal publications.
Evaluation of the FastIC ASIC with sub-100 ps Coincidence Time Resolution
Molecular imaging, High Energy Physics and applications requiring a precise timestamp demand efficient photodetectors coupled to fast readout electronics. This work presents the evaluation of the FastIC ASIC with sub-100 ps Coincidence Time Resolution. The 8-channel FastIC ASIC developed in CMOS 65 nm technology provides an accurate time-stamping of the detected particles and a linear energy measurement with only 12 mW/Ch of power consumption with default settings. Using 511 keV gamma excitation and a pair of identical LSO:Ce:Ca 0.2% measuring 2 × 2 × 3 mm3 coupled to HPK and FBK devices, coincidence time resolution values of 94 ± 2 and 76 ± 2 ps FWHM were obtained. First measurements of the chip confirmed its ability to detect scintillating light (e.g., LSO and BGO) and prompt light emitters (e.g. using Cherenkov radiators like TlCl and PbF2).