Detector Seminar: The MONOLITH project – towards picosecond timing in monolithic silicon pixel ASIC


2022/10/21 10:00 – 11:30


4号館325号室 + Zoom


Giuseppe Iacobucci (University of Geneva)





The MONOLITH ERC Advanced project aims at producing a monolithic silicon pixel ASIC with 50µm pixel pitch and picosecond-level time stamping. The two main ingredients are low-noise, fast SiGe BiCMOS electronics and a novel sensor concept, the Picosecond Avalanche Detector (PicoAD). The PicoAD uses a multi-PN junction to engineer the electric field and produce a continuous gain layer deep in the sensor volume. The result is an ultra-fast current signal with low intrinsic jitter in a full fill factor and highly granular monolithic detector. The proof-of-concept ASIC prototype recently produced proved that the PicoAD principle works. Testbeam measurements show that the proof-of-concept prototype is fully efficient and achieves time resolutions of 17ps averaged on the pixel surface, with 13ps at the center of the pixel and 25ps at the pixel edge.