Feb 21 – 25, 2022
Vienna University of Technology
Europe/Vienna timezone

Charge sensing properties of monolithic CMOS pixel sensors fabricated in a 65 nm technology

Feb 24, 2022, 9:25 AM
20m
Vienna University of Technology

Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Live Presentation Semiconductor Detectors Semiconductor Detectors

Speaker

Szymon Bugiel (AGH University of Science and Technology (PL))

Description

Decreasing the process feature size of monolithic CMOS pixel sensors is expected to enhance their overall performance, in terms of time and spatial resolutions, power dissipation and hit handling capabilities. CERN has organized the access to the Tower 65 nm CMOS sensor process, which is currently investigated by a large consortium as a potential technological candidate for the design of sensors to be used in a wide range of future detectors, the closest in time being the ALICE-ITS3 project.
Among other exploratory chips, small pixel matrices, dubbed CE-65, with analogue outputs have been fabricated in 2021. They feature pitches of 15 and 25 µm, various amplification schemes as well as sensing layer modifications allowing for depletion under proper biasing. These prototype sensors are being tested both in labs and in beam to study their charge collection properties, which drive the main performance as detection efficiency and spatial resolution. This contribution will report on the test results contributing to the first evaluation of the detection performance of the Tower 65 nm process.

Primary experiment ALICE

Primary authors

Alex Kluge (CERN) Andrei Dorokhov (IPHC, Strasbourg) Auguste Guillaume Besson (Centre National de la Recherche Scientifique (FR)) Jerome Baudot (IPHC - Strasbourg) Antonello Di Mauro (CERN) Christine Hu-Guo (Université de Strasbourg, CNRS) Claude Pierre Colledani (Centre National de la Recherche Scientifique (FR)) Davide Marras (Universita e INFN, Cagliari (IT)) Gianluca Aglieri Rinella (CERN) Gianluca Usai (Universita e INFN, Cagliari (IT)) Isabelle Valin Kimmo Kalevi JAASKELAINEN Marc Winter (Centre National de la Recherche Scientifique (FR)) Miljenko Suljic (CERN) Serhiy Senyukov (Centre National de la Recherche Scientifique (FR)) Szymon Bugiel (AGH University of Science and Technology (PL)) Thanh Hung Pham (Centre National de la Recherche Scientifique (FR)) Valerio Sarritzu (INFN - National Institute for Nuclear Physics) Walter Snoeys (CERN) Yitao Wu (University of Science and Technology of China (CN)) Ziad El Bitar (Centre National de la Recherche Scientifique (FR))

Presentation materials