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World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

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Spatial resolution of the Medipix2 X-ray imaging detector system

Davidson, D.W. and Tlustos, L and Mathieson, K and O'Shea, V and Smith, K.M. and Rahman, M (2004) Spatial resolution of the Medipix2 X-ray imaging detector system. In: 2003 IEEE Nuclear Science Symposium Conference Record. IEEE NUCLEAR SCIENCE SYMPOSIUM - CONFERENCE RECORD, 3 . IEEE, pp. 2727-2729. ISBN 0-7803-8257-9

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Abstract

The charge sharing present in a 55 micrometer square pixel matrix of 300 micrometer thick silicon is examined. This is achieved using a commercial simulation package to investigate the diffusion effects on the charge cloud of created electrons and holes. The total fraction of charge shared is found to be 20.8%, but this can be reduced by the addition of a minimum threshold level of detection. The optimum level giving all of the signal but with the minimum of noise is found to leave 10.4% charge shared on average.