Journal article

Authors list: Braach, Justus; Buschmann, Eric; Dannheim, Dominik; Dort, Katharina; Kugathasan, Thanushan; Munker, Magdalena; Snoeys, Walter; Svihra, Peter; Vicente, Mateus

Publication year: 2023

Journal: Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Volume number: 1056

ISSN: 0168-9002

eISSN: 1872-9576

Open access status: Hybrid

DOI Link: https://doi.org/10.1016/j.nima.2023.168641

Publisher: Elsevier

Abstract: 
Within the ATTRACT FASTPIX project, a monolithic pixel sensor demonstrator chip was developed in a modified 180 nm CMOS imaging process technology, targeting sub-nanosecond timing precision for single ionizing particles. It features a small collection electrode design on a 25 pm-thick epitaxial layer and contains 32 mini matrices of 68 hexagonal pixels each, with pixel pitches ranging from 8.66 to 20 pm. Four pixels are transmitting an analog output signal and 64 are transmitting binary hit information. Various design variations are explored, aiming at accelerating the charge collection and making the timing of the charge collection more uniform over the pixel area. Signal treatment of the analog waveforms, as well as reconstruction of digital position, time and charge information, is carried out off-chip. This contribution introduces the design of the sensor and readout system and presents performance results for various pixel designs achieved in recent test-beam measurements with external tracking and timing reference detectors. A time resolution below 150 ps is obtained at full efficiency for all pixel pitches.

Harvard Citation style: Braach, J., Buschmann, E., Dannheim, D., Dort, K., Kugathasan, T., Munker, M., et al. (2023) Test-beam performance results of the FASTPIX sub-nanosecond CMOS pixel sensor demonstrator, Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1056, Article 168641. https://doi.org/10.1016/j.nima.2023.168641

APA Citation style: Braach, J., Buschmann, E., Dannheim, D., Dort, K., Kugathasan, T., Munker, M., Snoeys, W., Svihra, P., & Vicente, M. (2023). Test-beam performance results of the FASTPIX sub-nanosecond CMOS pixel sensor demonstrator. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1056, Article 168641. https://doi.org/10.1016/j.nima.2023.168641