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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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Probing the $CP$ nature of the top-Higgs Yukawa coupling in $t\bar{t}H$ and $tH$ events with $H \to b\bar{b}$ decays using the ATLAS detector at the LHC

ArXiv 2303.05974 (2023)
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Search for third-generation vector-like leptons in $pp$ collisions at $\sqrt{s} = 13\,\text{TeV}$ with the ATLAS detector

ArXiv 2303.05441 (2023)
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Search for pair production of third-generation leptoquarks decaying into a bottom quark and a $τ$-lepton with the ATLAS detector

ArXiv 2303.01294 (2023)
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Evidence of antineutrinos from distant reactors using pure water at SNO

Physical Review Letters American Physical Society 130:9 (2023) 91801

Authors:

A Allega, Mr Anderson, S Andringa, J Antunes, M Askins, Dj Auty, A Bacon, N Barros, F Barão, R Bayes, Ew Beier, Ts Bezerra, A Bialek, Sd Biller, E Blucher, E Caden, Ej Callaghan, S Cheng, M Chen, B Cleveland, D Cookman, J Corning, Ma Cox, R Dehghani, J Deloye, C Deluce, Mm Depatie, J Dittmer, Kh Dixon, F Di Lodovico, Bryony Elbert, E Falk, N Fatemighomi, R Ford, K Frankiewicz, A Gaur, Oi González-Reina, D Gooding, C Grant, J Grove, Al Hallin, D Hallman, Wj Heintzelman, Rl Helmer, J Hu, R Hunt-Stokes, Sma Hussain, As Inácio, Cj Jillings, S Kaluzienski

Abstract:

The SNO+ Collaboration reports the first evidence of reactor antineutrinos in a Cherenkov detector. The nearest nuclear reactors are located 240 km away in Ontario, Canada. This analysis uses events with energies lower than in any previous analysis with a large water Cherenkov detector. Two analytical methods are used to distinguish reactor antineutrinos from background events in 190 days of data and yield consistent evidence for antineutrinos with a combined significance of 3.5σ.
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