Professor Daniela Bortoletto: Publications

Observation of four-top-quark production in the multilepton final state with the ATLAS detector

ArXiv 2303.15061 (2023)

Search for heavy long-lived multi-charged particles in the full LHC Run 2 $pp$ collision data at $\sqrt{s}$ = 13 TeV using the ATLAS detector

ArXiv 2303.13613 (2023)

Comparison of inclusive and photon-tagged jet suppression in 5.02 TeV Pb+Pb collisions with ATLAS

ArXiv 2303.1009 (2023)

Search for excited $τ$-leptons and leptoquarks in the final state with $τ$-leptons and jets in pp collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector

ArXiv 2303.09444 (2023)

Timing performance of radiation hard MALTA monolithic pixel sensors

Journal of Instrumentation IOP Publishing 18:03 (2023) C03011-C03011

Authors:

G Gustavino, P Allport, I Asensi, DV Berlea, D Bortoletto, C Buttar, F Dachs, V Dao, H Denizli, D Dobrijevic, L Flores, A Gabrielli, L Gonella, V González, M LeBlanc, K Oyulmaz, H Pernegger, F Piro, P Riedler, H Sandaker, C Solans, W Snoeys, T Suligoj, M van Rijnbach, A Sharma

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 $2 \times 10^{15}~1~\text{MeV}~\text{n}_{eq}/\text{cm}^2$ and time resolution below 2 ns, with uniform charge collection efficiency across the Pixel of size $36.4 \times 36.4~\mu\text{m}^2$ with a $3~\mu\text{m}^2$ 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.Comment: 8 pages, 8 figures. Submitted to Journal of Instrumentation (JINST). Proceedings of the 23rd International Workshop on Radiation Imaging Detectors IWORID 202

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