Testbeam characterization of a SiGe BiCMOS monolithic silicon pixel detector with internal gain layer
Abstract A monolithic silicon pixel ASIC prototype, produced in 2024 as part of the Horizon 2020 MONOLITH ERC Advanced project, was tested with a 120 GeV/c pion beam. The ASIC features a matrix of hexagonal pixels with a 100 μm pitch, read by low-noise, high-speed front-end electronics built using 130 nm SiGe BiCMOS technology. It includes the PicoAD sensor, which employs a continuous, deep PN junction to generate avalanche gain. Data were taken across power densities from 0.05 to 2.6 W/cm 2 and sensor bias voltages from 90 to 180 V. At the highest bias voltage, corresponding to an electron gain of 50, and maximum power density, an efficiency of (99.99 ± 0.01)% was achieved. The time resolution at this working point was (23.9 ± 0.2) ps before time-walk correction, improving to (12.1 ± 0.3) ps after correction.
Authors
- A. Pizarro-Medina
- Carlo Alberto Fenoglio (ORCID: https://orcid.org/0009-0007-7567-8763)
- F. Cadoux
- J. Saidi (ORCID: https://orcid.org/0000-0002-1564-6168)
- A. Picardi
- R. Cardella (ORCID: https://orcid.org/0000-0002-3117-7277)
- H. Rücker (ORCID: https://orcid.org/0000-0001-7407-959X)
- M. Elviretti
- L. Cecconi (ORCID: https://orcid.org/0000-0001-8067-1530)
- S. Gonzalez-Sevilla
- T. Kugathasan (ORCID: https://orcid.org/0000-0003-4631-5019)
- C. Magliocca
- M. Milanesio
- R. Kotitsa
- R. Cardarelli
- L. Iodice
- T. Moretti
- D. Ferrère (ORCID: https://orcid.org/0000-0002-5687-9240)
- G. Iacobucci
- L. Paolozzi (ORCID: https://orcid.org/0000-0002-9281-1972)
- M. Nessi (ORCID: https://orcid.org/0000-0001-7316-0118)
- Y. Favre
- M. Vicente Barreto Pinto
- S. Débieux
- S. Zambito
Institutions
- University of Geneva (CH)
- European Organization for Nuclear Research (CH)
- Leibniz Institute for High Performance Microelectronics (DE)
Publication Details
- Journal
- Journal of Instrumentation
- Published
- 2025-04-01
- DOI
- https://doi.org/10.1088/1748-0221/20/04/p04001
- Citations
- 1
- Primary Topic
- Particle Detector Development and Performance
- Type
- article
- Field-Weighted Citation Impact
- 1.87
Funders
- CERN
- Université de Genève