Recent results with radiation-tolerant TowerJazz 180 nm MALTA sensors

LeBlanc, M. et al. (2022) Recent results with radiation-tolerant TowerJazz 180 nm MALTA sensors. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 1041, 167390. (doi: 10.1016/j.nima.2022.167390)

Abstract

To achieve the physics goals of future colliders, it is necessary to develop novel, radiation-hard silicon sensors for their tracking detectors. We target the replacement of hybrid pixel detectors with Depleted Monolithic Active Pixel Sensors (DMAPS) that are radiation-hard, monolithic CMOS sensors. We have designed, manufactured and tested the MALTA series of sensors, which are DMAPS in the 180 nm TowerJazz CMOS imaging technology. MALTA have a pixel pitch well below current hybrid pixel detectors, high time resolution (<2 ns) and excellent charge collection efficiency across pixel geometries. These sensors have a total silicon thickness of between 50–300 m, implying reduced material budgets and multiple scattering rates for future detectors which utilize such technology. Furthermore, their monolithic design bypasses the costly stage of bump-bonding in hybrid sensors and can substantially reduce detector costs. This contribution presents the latest results from characterization studies of the MALTA2 sensors, including results demonstrating the radiation tolerance of these sensors.

• Item Type: Articles
• Additional Information: This project has received funding from the European Union’s Horizon 2020 Research and Innovation programme under Grant Agreement numbers 101004761 (AIDAinnova), 675587 (STREAM), and 654168 (IJS, Ljubljana, Slovenia).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Buttar, Professor Craig
• Authors: LeBlanc, M., Allport, P., Asensi, I., Berlea, D.-V., Bortoletto, D., Buttar, C., Dachs, F., Dao, V., Denizli, H., Dobrijevic, D., Flores, L., Gabrielli, A., Gonella, L., González, V., Gustavino, G., Oyulmaz, K., Pernegger, H., Piro, F., Riedler, P., Sandaker, H., Solans, C., Snoeys, W., Suligoj, T., van Rijnbach, M., Sharma, A., Núñez, M. V., Weick, J., Worm, S., and Zoubir, A.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
• Publisher: Elsevier
• ISSN: 0168-9002
• ISSN (Online): 1872-9576
• Published Online: 27 August 2022
• Copyright Holders: Copyright © 2022 The Authors
• First Published: First published in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 1041: 167390
• Publisher Policy: Reproduced under a Creative Commons license

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
172549		STREAM	Craig Buttar	European Commission (EC)	675587	P&S - Physics & Astronomy