Charge collection parameterization of MALTA2, a depleted monolithic active pixel sensor

Journal of Instrumentation 2026 Open access

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Authors: Lucian Fasselt, P. Behera, D.V. Berlea, D. Bortoletto, C. Buttar, T. Chembakan, V. Dao, G. Dash, S. Haberl, T. Inada, F. K. Isik, P. Jana
+13 more Long Li, L. Li, Heinz Pernegger, Petra Riedler, W. Snoeys, Carlos Solans Sánchez, Anna Swoboda, I. Turk Cakir, Milou van Rijnbach, M. Vazquez Nunez, A. Vijay, Julian Weick, S. D. Worm
DOI: 10.1088/1748-0221/21/04/c04001
Cited by: 1
References: 7

Abstract

Abstract A fast simulation method is presented for a depleted monolithic active pixel sensor, which uses a data driven parameterization of the charge collection and propagation. This approach provides an efficient alternative to TCAD simulations, particularly for sensors whose proprietary process details — such as doping profiles or implant geometries — are unavailable. Data was obtained with a MALTA2 sensor fabricated in a 180 nm CMOS imaging technology on 30 µm epitaxial silicon using the MALTA beam telescope at CERN SPS. The model reproduces the measured in-pixel efficiency with high accuracy and enables a realistic yet computationally lightweight analog pixel simulation. This method will be further employed in optimizing the digital sensor design for applications in high-rate particle tracking and high-granularity calorimetry.

Fields of Study & Subjects

Particle Detector Development and Performance CCD and CMOS Imaging Sensors Radiation Detection and Scintillator Technologies

Publication details

Journal / source
Journal of Instrumentation
Publisher
IOP Publishing
Volume
21
Issue
04
Pages
C04001–C04001
Publication date
1 April 2026
Language
EN