CERN Accelerating science

Article
Report number arXiv:1909.08392
Title Measurement of the relative response of small-electrode CMOS sensors at Diamond Light Source
Related titleMeasurement of the relative response of small-electrode CMOS sensors at Diamond Light Source
Author(s) Mironova, Maria (Oxford U.) ; Metodiev, Kaloyan (Oxford U.) ; Allport, Phil (Birmingham U.) ; Berdalovic, Ivan (CERN ; Zagreb U.) ; Bortoletto, Daniela (Oxford U.) ; Buttar, Craig (Glasgow U.) ; Cardella, Roberto (CERN ; Oslo U.) ; Dao, Valerio (CERN) ; Dyndal, Mateusz (CERN) ; Freeman, Patrick (Birmingham U.) ; de Acedo, Leyre Flores Sanz (CERN ; Glasgow U.) ; Gonella, Laura (Birmingham U.) ; Kugathasan, Thanushan (CERN) ; Pernegger, Heinz (CERN) ; Piro, Francesco (CERN) ; Plackett, Richard (Oxford U.) ; Riedler, Petra (CERN) ; Sharma, Abhishek (Oxford U. ; CERN) ; Schioppa, Enrico, Junior. (Oxford U.) ; Shipsey, Ian (Oxford U.) ; Solans Sanchez, Carlos (CERN) ; Snoeys, Walter (CERN) ; Wennloef, Hakan (Birmingham U.) ; Weatherill, Daniel (Oxford U.) ; Wood, Daniel (Oxford U.) ; Worm, Steven (Birmingham U.)
Publication 2020-03-11
Imprint 2019-09-18
Number of pages 13 p, 13
In: Nucl. Instrum. Methods Phys. Res., A 956 (2020) 163381
DOI 10.1016/j.nima.2019.163381
Subject category Particle Physics - Experiment
Abstract This paper outlines the results of investigations into the effects of radiation damage in the mini-MALTA prototype. Measurements were carried out at Diamond Light Source using a micro-focus X-ray beam, which scanned across the surface of the device in 2 $\mathrm{\mu m}$ steps. This allowed the in-pixel photon response to be measured directly with high statistics. Three pixel design variations were considered: one with the standard continuous $\mathrm{n^-}$ layer layout and front-end, and extra deep p-well and $\mathrm{n^-}$ gap designs with a modified front-end. Five chips were measured: one unirradiated, one neutron irradiated, and three proton irradiated.
Copyright/License preprint: (License: arXiv nonexclusive-distrib 1.0)
Elsevier B.V.



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