Timing performance of radiation hard MALTA monolithic pixel sensors. (15th March 2023)

• Record Type: Journal Article
• Authors: Gustavino, G.; Allport, P.; Asensi, I.; Berlea, D.V.; Bortoletto, D.; Buttar, C.; Dachs, F.; Dao, V.; Denizli, H.; Dobrijevic, D.; Flores, L.; Gabrielli, A.; Gonella, L.; González, V.; LeBlanc, M.; Oyulmaz, K.; Pernegger, H.; Piro, F.; Riedler, P.; Sandaker, H.; Solans, C.; Snoeys, W.; Suligoj, T.; van Rijnbach, M.; Sharma, A.; Vázquez Núñez, M.; Weick, J.; Worm, S.; Zoubir, A.
• Is Part Of: Journal of instrumentation. Volume 18:Number 3(2023)
• Publication Date: 2023-03-15
• Subjects: Particle tracking detectors (Solid-state detectors) -- Radiation damage to detector materials (solid state) -- Radiation-hard detectors -- Solid state detectors; Scientific apparatus and instruments -- Periodicals; 502.84
• DOI: 10.1088/1748-0221/18/03/C03011
• Languages: English
• ISSNs: 1748-0221

Abstract

Abstract: The MALTA family of Depleted Monolithic Active Pixel Sensor (DMAPS) produced in Tower 180 nm CMOS technology targets radiation hard applications for the HL-LHC and beyond. Several process modifications and front-end improvements have resulted in radiation hardness up to 2 × 10 15 1 MeV neq /cm 2 and time resolution below 2 ns, with uniform charge collection efficiency across the pixel of size 36.4 × 36.4 μm 2 with a 3 μm 2 electrode size. The MALTA2 demonstrator produced in 2021 on high-resistivity epitaxial silicon and on Czochralski substrates implements a new cascoded front-end that reduces the RTS noise and has a higher gain. This contribution shows results from MALTA2 on timing resolution at the nanosecond level from the CERN SPS test-beam campaign of 2021.