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arxiv: 2308.13231 · v1 · pith:GNZBBC7Rnew · submitted 2023-08-25 · ⚛️ physics.ins-det · hep-ex

Radiation Hardness of MALTA2 Monolithic CMOS Sensors on Czochralski Substrates

Milou van Rijnbach , Dumitru Vlad Berlea , Valerio Dao , Martin Ga\v{z}i , Phil Allport , Ignacio Asensi Tortajada , Prafulla Behera , Daniela Bortoletto
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Craig Buttar Florian Dachs Ganapati Dash Dominik Dobrijevi\'c Lucian Fasselt Leyre Flores Sanz de Acedo Andrea Gabrielli Vicente Gonz\'alez Giuliano Gustavino Pranati Jana Heinz Pernegger Petra Riedler Heidi Sandaker Carlos Solans S\'anchez Walter Snoeys Tomislav Suligoj Marcos V\'azquez N\'u\~nez Anusree Vijay Julian Weick Steven Worm Abdelhak M. Zoubir
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classification ⚛️ physics.ins-det hep-ex
keywords malta2substratesachievecmosczochralskihardnessmaltamonolithic
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MALTA2 is the latest full-scale prototype of the MALTA family of Depleted Monolithic Active Pixel Sensors (DMAPS) produced in Tower Semiconductor 180 nm CMOS technology. In order to comply with the requirements of High Energy Physics (HEP) experiments, various process modifications and front-end changes have been implemented to achieve low power consumption, reduce Random Telegraph Signal (RTS) noise, and optimise the charge collection geometry. Compared to its predecessors, MALTA2 targets the use of a high-resistivity, thick Czochralski (Cz) substrates in order to demonstrate radiation hardness in terms of detection efficiency and timing resolution up to 3E15 1 MeV neq/cm2 with backside metallisation to achieve good propagation of the bias voltage. This manuscript shows the results that were obtained with non-irradiated and irradiated MALTA2 samples on Cz substrates from the CERN SPS test beam campaign from 2021-2023 using the MALTA telescope.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

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    physics.ins-det 2026-04 unverdicted novelty 6.0

    A data-driven parametric simulator for MAPS detectors is developed from measurements, validated on MALTA2, and used to optimize hit merger designs for MALTA3 in high-rate environments.

  2. TCAD + Allpi$\text{x}^2$ Simulation study of MALTA2, a Depleted Monolithic Active Pixel Sensor for future tracking

    physics.ins-det 2026-05 unverdicted novelty 4.0

    The TCAD-Allpix² framework optimizes N-type blanket doping for MALTA2 and matches measured active depth to within 2% using grazing-angle tests.