LF-Monopix1 and TJ-Monopix1 are depleted monolithic active pixel sensors (DMAPS) in 150 nm LFoundry and 180 nm TowerJazz CMOS technologies respectively. They are designed for usage in high-rate and high-radiation environments such as the ATLAS Inner Tracker at the High-Luminosity Large Hadron Collider (HL-LHC). Both chips are read out using a column-drain readout architecture. LF-Monopix1 follows a design with large charge collection electrode where readout electronics are placed inside. Generally, this offers a homogeneous electrical field in the sensor and short drift distances. TJ-Monopix1 employs a small charge collection electrode with readout electronics separated from the electrode and an additional n-type implant to achieve full depletion of the sensitive volume. This approach offers a low sensor capacitance and therefore low noise and is typically implemented with small pixel size. Both detectors have been characterized before and after irradiation using lab tests and particle beams.
@article{arxiv.2006.02297,
title = {DMAPS Monopix developments in large and small electrode designs},
author = {Christian Bespin and Marlon Barbero and Pierre Barrillon and Ivan Berdalovic and Siddharth Bhat and Patrick Breugnon and Ivan Caicedo and Roberto Cardella and Zongde Chen and Yavuz Degerli and Jochen Dingfelder and Leyre Flores Sanz de Acedo and Stephanie Godiot and Fabrice Guilloux and Toko Hirono and Tomasz Hemperek and Fabian Hügging and Hans Krüger and Thanushan Kugathasan and Cesar Augusto Marin Tobon and Konstantinos Moustakas and Patrick Pangaud and Heinz Pernegger and Francesco Piro and Petra Riedler and Alexandre Rozanov and Piotr Rymaszewski and Philippe Schwemling and Walter Snoeys and Maxence Vandenbroucke and Tianyang Wang and Norbert Wermes and Sinuo Zhang},
journal= {arXiv preprint arXiv:2006.02297},
year = {2020}
}
Comments
7 pages, 8 figures. Proceedings of the 12th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors