Comunicazione
Timing performance of monolithic sensors with additional gain.
Gioachin G. per la ALICE Collaboration
In preparation for the LHC Run 5 (2035) and 6, the ALICE Collaboration has submitted a proposal for a next-generation heavy-ion experiment, named ALICE 3, to be installed during the LHC Long Shutdown 4. The key features of this new experimental apparatus will be an exceptional pointing resolution and an excellent Particle IDentification (PID). To this end, a Time-Of-Flight system, made of silicon sensors, with an outstanding time resolution of 20 ps will play a crucial role. Several silicon technologies are under investigation to achieve this goal, and, among them, fully depleted CMOS sensors with an additional gain. A vigorous R&D is needed as the time resolution of CMOS sensors needs to be pushed significantly beyond the present state of the art to meet the demanding requirements of future-generation experiments. In particular, the results of the simulations performed to design the CMOS sensors with an additional gain will be presented. Moreover, the experimental results obtained in the tests of the first prototypes produced with a 110 nm technology will be also shown. The studies will be followed by an overview of the next steps.