Lfoundry S.r.l.

Petsys—medical Pet Imaging Systems, S.a.

Angelo Rivetti

Giovanni Margutti

Lucio Pancheri

Onorato Di Cola

Ricardo Alexandre Marques Bogalho

Manuel Dionisio Da Rocha Rolo

Joáo Manuel Coelho Dos Santos Varela

Piero Giubilato

Manuel Dionísio Da Rocha Rolo

João Manuel Coelho Das Santos Varela

Manuel Dioníso Da Rocha Rolo

Ricardo Alexandre Marques Bugalho

This disclosure provides a semiconductor sensor of ionizing radiation and/or ionizing particles with a backside bias electrode and a backside junction for completely depleting the semiconductor substrate up to carrier collection regions each connected to a respective collection electrode of carriers generated by ionization in the substrate. Differently from prior sensors, the sensor of this disclosure has an intermediate semiconductor layer formed upon the substrate, having a greater doping concentration than the doping concentration of the substrate and a doping of a same type. In this intermediate layer, buried doped regions of opposite type one separated from the other are formed for shielding superficial regions in which readout circuits are defined.

Integrated sensor of ionizing radiation and ionizing particles

This invention is about a readout apparatus and method for time-of-flight and energy measurements with silicon photomultipliers (SIPM) coupled to a scintillator. The timing measurement can be as accurate as 50 ps or below, after calibration. The energy is measured using a time-over-threshold technique, and the energy resolution is only constrained by the scintillation statistics. In order to achieve low power of 10 mW per channel, a low impedance input amplifier and analog time-to-digital converters (TDCs) based on time interpolation are used. The readout circuit can be triggered by a single photoelectron (p.e.) with a signal-to-noise ratio (SNR) above 20 dB. The said readout circuit operates with SiPMs of different gain, polarity and matrix size. The preferred embodiment of the readout apparatus is a multi-channel application specific integrated circuit (ASIC) with 64 channels.

Reading device and method for measuring energy and flight time using silicon photomultipliers

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Turin, Italy

Angelo Rivetti