%0 Electronic Article
%A Fasselt, Lucian
%A Asensi Tortajada, Ignacio
%A Behera, Prafulla
%A Berlea, Dumitru Vlad
%A Bortoletto, Daniela
%A Buttar, Craig
%A Dao, Valerio
%A Dash, Ganapati
%A de Acedo, Leyre Flores Sanz
%A Gazi, Martin
%A Gonella, Laura
%A González, Vicente
%A Haberl, Sebastian
%A Inada, Tomohiro
%A Jana, Pranati
%A Li, Long
%A Pernegger, Heinz
%A Riedler, Petra
%A Snoeys, Walter
%A Solans Sánchez, Carlos
%A van Rijnbach, Milou
%A Núñez, Marcos Vázquez
%A Vijay, Anusree
%A Weick, Julian
%A Worm, Steven
%T Charge calibration of MALTA2, a radiation hard depleted monolithic active pixel sensor
%N arXiv:2501.13562
%M PUBDB-2026-00229
%M arXiv:2501.13562
%D 2026
%X MALTA2 is a depleted monolithic active pixel sensor (DMAPS) designed for tracking at high rates and typically low detection threshold of 200e−. Threshold calibration is crucial to understanding the charge collection in the pixel. A simple procedure is developed to calibrate the threshold to unit electrons making use of a dedicated charge injection circuit and an Fe-55 source with dominant charge deposition of 1611e−. The injection voltage corresponding to the signal under exposure of Fe-55 is determined and serves as the basis for charge calibration. The charge injection circuit incorporates a capacitance with design value of Cinj=230aF. Experimentally, the average capacitance value for non-irradiated samples is found to be Cinj,exp=255±35aF and varies between sensors by 14
%K DMAPS (autogen)
%K Charge calibration (autogen)
%K Tracking (autogen)
%K High-energy physics (autogen)
%F PUB:(DE-HGF)25
%9 Preprint
%R 10.3204/PUBDB-2026-00229
%U https://bib-pubdb1.desy.de/record/643482