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- ItemTime resolution and power consumption of a monolithic silicon pixel prototype in SiGe BiCMOS technology(London : Inst. of Physics, 2020) Paolozzi, L.; Cardarelli, R.; Débieux, S.; Favre, Y.; Ferrère, D.; Gonzalez-Sevilla, S.; Iacobucci, G.; Kaynak, M.; Martinelli, F.; Nessi, M.; Rücker, H.; Sanna, I.; Sultan, D.M.S.; Valerio, P.; Zaffaroni, E.SiGe BiCMOS technology can be used to produce ultra-fast, low-power silicon pixel sensors that provide state-of-the-art time resolution even without internal gain. The development of such sensors requires the identification and control of the main factors that may degrade the timing performance as well as the characterisation of the dependance of the sensor time resolution on the amplifier power consumption. Measurements with a 90Sr source of a prototype sensor produced in SG13G2 technology from IHP Microelectronics shows a time resolution of 140 ps at an amplifier current of 7 µA and 45 ps at a power consumption of 150 µA. The resolution on the measurement of the signal time-over-threshold, which is used to correct for time walk, is the main factor affecting the timing performance of this prototype. c 2020 CERN. Published by IOP Publishing Ltd on behalf of Sissa Medialab.
- ItemCharacterization of the demonstrator of the fast silicon monolithic ASIC for the TT-PET project(London : Inst. of Physics, 2019) Paolozzi, L.; Bandi, Y.; Cardarelli, R.; Débieux, S.; Favre, Y.; Ferrère, D.; Forshaw, D.; Hayakawa, D.; Iacobucci, G.; Kaynak, M.; Miucci, A.; Nessi, M.; Ripiccini, E.; Rücker, H.; Valerio, P.; Weber, M.The TT-PET collaboration is developing a small animal TOF-PET scanner based on monolithic silicon pixel sensors in SiGe BiCMOS technology. The demonstrator chip, a small-scale version of the final detector ASIC, consists of a 03 × 1 pixel matrix integrated with the front-end, a 50 ps binning TDC and read out logic. The chip, thinned down to 100 µm and backside metallized, was operated at a voltage of 180 V. The tests on a beam line of minimum ionizing particles show a detection efficiency greater than 99.9% and a time resolution down to 110 ps. © 2019 CERN.