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Design considerations to overcome cross talk in a photon counting silicon strip detector for computed tomography
Royal Institute Technology.
Royal Institute Technology.
Linköping University, Department of Electrical Engineering, Electronic Devices. Linköping University, The Institute of Technology.
Royal Institute Technology.
2010 (English)In: NUCLEAR INSTRUMENTS and METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, ISSN 0168-9002, Vol. 621, no 1-3, 371-378 p.Article in journal (Refereed) Published
Abstract [en]

This article presents a Monte Carlo simulation of the detector energy response in the presence of pileup in a segmented silicon microstrip detector designed for high flux spectral computed tomography with sub-millimeter pixel size. Currents induced on the collection electrode of a pixel segment are explicitly modeled and signals emanating from events in neighboring pixels are superimposed together with electronic noise before the entire pulse train is processed by a model of the readout electronics to obtain the detector energy response function. The article shows how the lower threshold and the time constant of the electronic filters need to be set in order to minimize the detrimental influence of cross talk from neighboring pixel segments, an issue that is aggravated by the sub-millimeter pixel size and the proposed segmented detector design.

Place, publisher, year, edition, pages
Elsevier Science B.V., Amsterdam. , 2010. Vol. 621, no 1-3, 371-378 p.
Keyword [en]
Monte Carlo simulation, Silicon microstrip detector, Photon counting CT, Cross talk, Pileup
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-59255DOI: 10.1016/j.nima.2010.04.071ISI: 000281109100050OAI: oai:DiVA.org:liu-59255DiVA: diva2:350373
Available from: 2010-09-10 Created: 2010-09-10 Last updated: 2010-09-10

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Svensson, Christer

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