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@ARTICLE{Fasselt:643482,
      author       = {Fasselt, Lucian and Asensi Tortajada, Ignacio and Behera,
                      Prafulla and Berlea, Dumitru Vlad and Bortoletto, Daniela
                      and Buttar, Craig and Dao, Valerio and Dash, Ganapati and de
                      Acedo, Leyre Flores Sanz and Gazi, Martin and Gonella, Laura
                      and González, Vicente and Haberl, Sebastian and Inada,
                      Tomohiro and Jana, Pranati and Li, Long and Pernegger, Heinz
                      and Riedler, Petra and Snoeys, Walter and Solans Sánchez,
                      Carlos and van Rijnbach, Milou and Núñez, Marcos Vázquez
                      and Vijay, Anusree and Weick, Julian and Worm, Steven},
      title        = {{C}harge calibration of {MALTA}2, a radiation hard depleted
                      monolithic active pixel sensor},
      reportid     = {PUBDB-2026-00229, arXiv:2501.13562},
      year         = {2026},
      abstract     = {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 $14\%$ in terms of standard
                      deviation. The deviation from the design value as well as
                      among sensors motivates the need for the presented
                      calibration procedure, which is proposed to be performed for
                      each MALTA2 sensor and reduces the uncertainty down to $3\%$
                      depending on the sensor.},
      keywords     = {DMAPS (autogen) / Charge calibration (autogen) / Tracking
                      (autogen) / High-energy physics (autogen)},
      cin          = {$Z_DET$},
      ddc          = {530},
      cid          = {$I:(DE-H253)Z_DET-20201126$},
      pnm          = {622 - Detector Technologies and Systems (POF4-622) /
                      AIDAinnova - Advancement and Innovation for Detectors at
                      Accelerators (101004761) / AIDA-2020 - Advanced European
                      Infrastructures for Detectors at Accelerators (654168) /
                      STREAM - Smart Sensor Technologies and Training for
                      Radiation Enhanced Applications andMeasurements (675587)},
      pid          = {G:(DE-HGF)POF4-622 / G:(EU-Grant)101004761 /
                      G:(EU-Grant)654168 / G:(EU-Grant)675587},
      experiment   = {EXP:(DE-MLZ)External-20140101},
      typ          = {PUB:(DE-HGF)25},
      eprint       = {2501.13562},
      howpublished = {arXiv:2501.13562},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2501.13562;\%\%$},
      doi          = {10.3204/PUBDB-2026-00229},
      url          = {https://bib-pubdb1.desy.de/record/643482},
}