Feb 20 – 22, 2017
FBK, Trento
Europe/Zurich timezone

Charged particles detector based on a two-tier avalanche pixelated sensor

Feb 20, 2017, 6:05 PM
1h
Aula Grande (FBK, Trento)

Aula Grande

FBK, Trento

Via Santa Croce, 77 38122 Trento ITALY

Speaker

Andrea Ficorella (Università di Trento, Dipartimento di Ingegneria Industriale, I-38123 Trento, Italy and TIFPA INFN, I-38123 Trento, Italy)

Description

In this work, carried out in the framework of APiX2 project funded by Istituto Nazionale di Fisica Nucleare (INFN), a pixelated device for the direct detection of charged particles is described and characterization measurements are reported. The working principle of the device is the discrimination between particle-triggered detections and dark counts, obtained with a coincidence circuit embedded at pixel level.
The device is composed of two arrays of Geiger-mode avalanche detectors vertically-aligned and bump bonded. Each array, fabricated in a 150nm CMOS process, is formed of 48 x 16 pixels with a pitch of 50 µm x 75 µm; four different active areas were included from a minimum of 30 x 30 µm2 to a maximum of 43 x 45 µm2. Pixel electronics consists of a quenching transistor, a programmable-length monostable, a coincidence circuit and a memory to store the coincidence events.
A preliminary campaign of measurements was performed to electrically characterize the functionality of the device. The DCR of each layer was measured together with the coincidence rate with different lengths of the monostable pulse. A validation of the sensor was performed with a 90Sr β source.

TRACK CMOS Sensors

Primary author

Andrea Ficorella (Università di Trento, Dipartimento di Ingegneria Industriale, I-38123 Trento, Italy and TIFPA INFN, I-38123 Trento, Italy)

Co-authors

Lucio Pancheri (Università di Trento, Dipartimento di Ingegneria Industriale, I-38123 Trento, Italy and TIFPA INFN, I-38123 Trento, Italy) Gian Franco Dalla Betta (Università di Trento, Dipartimento di Ingegneria Industriale, I-38123 Trento, Italy and TIFPA INFN, I-38123 Trento, Italy) Lodovico Ratti (Università di Pavia, Dipartimento di Ingegneria Industriale e dell'informazione, and INFN Pavia, I-27100 Pavia, Italy) Gianmaria Collazuol (Università di Padova, Dipartimento di Fisica e Astronomia, and INFN Padova, I-35131 Padova, Italy) Paolo Brogi (Università di Siena, DFSTA, I-53100 Siena, and INFN Pisa, I-56127 Pisa, Italy) Pier Simone Marrocchesi (Università di Siena, DFSTA, I-53100 Siena, and INFN Pisa, I-56127 Pisa, Italy) Fabio Morsani (INFN Pisa, I-56127 Pisa, Italy) Aurore Savoy-Navarro (Laboratoire APC, University Paris-Diderot/CNRS, Paris, France, and INFN Pisa, I-56127 Pisa, Italy )

Presentation materials

There are no materials yet.