Dyndal, M.Dao, VAllport, P.Tortajada, I. AsensiBarbero, M.Bhat, S.Bortoletto, D.Denizli, HalukYorulmaz, Kaan Yüksel2021-06-232021-06-2320201748-0221https://doi.org/10.1088/1748-0221/15/02/P02005https://hdl.handle.net/20.500.12491/10585Depleted Monolithic Active Pixel Sensor (DMAPS) prototypes developed in the TowerJazz 180 nm CMOS imaging process have been designed in the context of the ATLAS upgrade Phase-II at the HL-LHC. The pixel sensors are characterized by a small collection electrode (3 mu m) to minimize capacitance, a small pixel size (36.4 x 36.4 mu m(2)), and are produced on high resistivity epitaxial p-type silicon. The design targets a radiation hardness of 1 x 10(15) 1 MeV n(eq)/cm(2), compatible with the outermost layer of the ATLAS ITK Pixel detector. This paper presents the results from characterization in particle beam tests of the Mini-MALTA prototype that implements a mask change or an additional implant to address the inefficiencies on the pixel edges. Results show full efficiency after a dose of 1 x 10(15) 1 MeV n(eq)/cm(2).eninfo:eu-repo/semantics/openAccessFront-end Electronics for Detector ReadoutParticle Tracking Detectors (Solid-state Detectors)Radiation-hard DetectorsSolid State DetectorsArticle10.1088/1748-0221/15/02/P020051522-s2.0-85077506795Q2WOS:000527944100005Q4