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IBIS – Innovative Backside Illuminated Single photon imaging sensor

 

Local Coordinator: Alessandro Montanari
National Coordinator: Alessandro Montanari
Research Units: Bo, TIFPA, To
Duration: 2021-2022 (2023 under “Dotazioni G5”)

Local Group:
A. Montanari, S. Bertolucci, V. Cicero, F. Fabbri, N. Mauri, L. Patrizii, V. Pia, M. Pozzato, T. Rovelli, C. Sbarra, G. Sirri, N. Tosi

IBIS represents a first step towards the implemetation of a fast and high- resolution imaging device covering a wide range of wavelengths. To this end, two components are needed: a sensor and a proper optics. The technology selected for the sensor consists in Backside Illuminated Silicon Photomultipliers, shown in the picture

In this architecture, both the electronics and the high-field regions are located on the same side of the sensor, leaving the entrance window of the radiation free from structures. This allows to reach high Fill Factors, as well as to implement specific window working to extend the sensitivity of the device beyond the usual wavelengh ranges of SiPM.

The proper optics depends on the specific application. IBIS is focused on imaging of scintillation light in Liquid Argon detectors.

In order to fully exploit the new sensor, a readout ASIC will be designed while developing the sensor, although its real implementation is beyond the time scale of the project