Simulations of radiation-damaged 3D detectors for the Super-LHC

Pennicard, D., Pellegrini, G., Fleta, C., Bates, R., O'Shea, V., Parkes, C. and Tartoni, N. (2008) Simulations of radiation-damaged 3D detectors for the Super-LHC. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 592(1-2), pp. 16-25. (doi:10.1016/j.nima.2008.03.100)

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Publisher's URL: http://dx.doi.org/10.1016/j.nima.2008.03.100

Abstract

Future high-luminosity colliders, such as the Super-LHC at CERN, will require pixel detectors capable of withstanding extremely high radiation damage. In this article, the performances of various 3D detector structures are simulated with up to 1×1016 1 MeV-neq/cm2 radiation damage. The simulations show that 3D detectors have higher collection efficiency and lower depletion voltages than planar detectors due to their small electrode spacing. When designing a 3D detector with a large pixel size, such as an ATLAS sensor, different electrode column layouts are possible. Using a small number of n+ readout electrodes per pixel leads to higher depletion voltages and lower collection efficiency, due to the larger electrode spacing. Conversely, using more electrodes increases both the insensitive volume occupied by the electrode columns and the capacitive noise. Overall, the best performance after 1×1016 1 MeV-neq/cm2 damage is achieved by using 4–6 n+electrodes per pixel.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:O'Shea, Professor Val and Bates, Dr Richard and Parkes, Dr Christopher
Authors: Pennicard, D., Pellegrini, G., Fleta, C., Bates, R., O'Shea, V., Parkes, C., and Tartoni, N.
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
ISSN:0168-9002
ISSN (Online):1872-9576
Published Online:27 March 2008

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
4078043D Detectors for Synchrotron ApplicationsChristopher ParkesEngineering & Physical Sciences Research Council (EPSRC)EP/D014573/1Physics and Astronomy