Mini-MALTA: radiation hard pixel designs for small-electrode monolithic CMOS sensors for the High Luminosity LHC

Dyndal, M. et al. (2020) Mini-MALTA: radiation hard pixel designs for small-electrode monolithic CMOS sensors for the High Luminosity LHC. Journal of Instrumentation, 15(2), P02005. (doi: 10.1088/1748-0221/15/02/P02005)

Abstract

Depleted Monolithic Active Pixel Sensor (DMAPS) prototypes developed in the TowerJazz 180 nm CMOS imaging process have been designed in the context of the ATLAS upgrade Phase-II at the HL-LHC. The pixel sensors are characterized by a small collection electrode (3 μm) to minimize capacitance, a small pixel size (36.4× 36.4 μm2), and are produced on high resistivity epitaxial p-type silicon. The design targets a radiation hardness of 1×1015 1 MeV neq/cm2, compatible with the outermost layer of the ATLAS ITK Pixel detector. This paper presents the results from characterization in particle beam tests of the Mini-MALTA prototype that implements a mask change or an additional implant to address the inefficiencies on the pixel edges. Results show full efficiency after a dose of 1×1015 1 MeV neq/cm2.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Flores Sanz de Acedo, Leyre and Buttar, Professor Craig and Maneuski, Dr Dima and Argemi, Mr Lluis Simon
• Authors: Dyndal, M., Dao, V., Allport, P., Asensi Tortajada, I., Barbero, M., Bhat, S., Bortoletto, D., Berdalovic, I., Bespin, C., Buttar, C., Caicedo, I., Cardella, R., Dachs, F., Degerli, Y., Denizli, H., Flores Sanz de Acedo, L., Freeman, P., Gonella, L., Habib, A., Hemperek, T., Hirono, T., Hiti, B., Kugathasan, T., Mandić, I., Maneuski, D., Mikuž, M., Moustakas, K., Munker, M., Oyulmaz, K.Y., Pangaud, P., Pernegger, H., Piro, F., Riedler, P., Sandaker, H., Schioppa, E.J., Schwemling, P., Sharma, A., Argemi, L. S., Solans Sanchez, C., Snoeys, W., Suligoj, T., Wang, T., Wermes, N., and Worm, S.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Journal of Instrumentation
• Publisher: IOP Publishing
• ISSN: 1748-0221
• ISSN (Online): 1748-0221
• Published Online: 10 February 2020
• Copyright Holders: Copyright © 2020 CERN
• First Published: First published in Journal of Instrumentation 15(2): P02005
• 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