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Count rate linearity and spectral response of the Medipix3RX chip coupled to a 300μm silicon sensor under high flux conditions
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design. CERN, Route de Meyrin 385, Geneva, Switzerland .
CERN, Route de Meyrin 385, Geneva, Switzerland .
CERN, Route de Meyrin 385, Geneva, Switzerland .
Institute of Photon Science and Synchrotrom Radiation, ANKA Synchrotron Radiation Facility Karlsruhe, Institute of Technology KIT, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany .
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2014 (English)In: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 9, no 4, p. Art. no. C04028-Article in journal (Refereed) Published
Abstract [en]

For clinical X-ray imaging, the detector performance under high flux conditions is very important, with typical flux rates for modern CT systems reaching 109 photons s-1 mm-2 in the direct beam. In addition, for spectral imaging a good energy resolution under these conditions is needed. This poses difficulties, since pulse pileup in the pixel electronics does not only affect the count rate, leading to a deviation from the otherwise linear behavior, but also degrades the spectral response of the detector, making k-edge subtraction and other contrast enhancement techniques less efficient. In this paper, we investigate the count rate capabilities and the energy response of the Medipix3RX chip under high flux conditions using 10 keV monochromatic photons. © CERN 2014.

Place, publisher, year, edition, pages
2014. Vol. 9, no 4, p. Art. no. C04028-
Keywords [en]
Hybrid detectors, X-ray detectors
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-22044DOI: 10.1088/1748-0221/9/04/C04028ISI: 000336123800028Scopus ID: 2-s2.0-84899579747Local ID: STCOAI: oai:DiVA.org:miun-22044DiVA, id: diva2:720654
Note

Language of Original Document: English

Available from: 2014-06-02 Created: 2014-05-30 Last updated: 2017-12-05Bibliographically approved
In thesis
1. Hybrid pixel detectors: Characterization and optimization
Open this publication in new window or tab >>Hybrid pixel detectors: Characterization and optimization
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2015. p. 209
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 228
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-26794 (URN)STC (Local ID)978-91-88025-37-1 (ISBN)STC (Archive number)STC (OAI)
Public defence
2015-09-08, O102, Sundsvall, 13:00 (English)
Supervisors
Note

Vid tidpunkten för disputationen var följande delarbete opublicerat: delarbete 8 inskickat.

At the time of the doctoral defence the following paper was unpublished: paper 8 submitted.

Available from: 2016-01-04 Created: 2016-01-04 Last updated: 2018-09-10Bibliographically approved

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Fröjdh, Erik

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