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Structured scintill...
Structured scintillators for X-ray imaging with micrometre resolution
- Article/chapterEnglish2009
Publisher, publication year, extent ...
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Elsevier BV,2009
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:kth-30716
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-30716URI
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https://doi.org/10.1016/j.nima.2009.03.139DOI
Supplementary language notes
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Language:English
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Summary in:English
Part of subdatabase
Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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QC 20110309
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A 3D X-ray detector for imaging of 30-200keV photons is described. It comprises a stack of semitransparent structured scintillators, where each scintillator is a regular array of waveguides in silicon, and with pores filled with CsI. The performance of the detector is described theoretically and explored in detail through simulations. The resolution of a single screen is shown to be determined only by the pitch, at least up to 100 keV. In comparison to conventional homogenous screens an improvement in efficiency by a factor 5-15 is obtainable. The cross-talk between screens in the 3D detector is shown to be negligible. The concept of such a 3D detector enables ray tracing and super resolution algorithms to be applied. Realized pore geometries have a lower aspect ratio than used in simulations and the roughness of the pore walls gives a 13% decrease in waveguide efficiency. Compared to currently used regular scintillators with similar resolution an efficiency increase by a factor 4 has been found for the structured scintillator.
Subject headings and genre
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Scintillator
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Detector
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Imaging
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Hard X-ray
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Simulation
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TECHNOLOGY
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TEKNIKVETENSKAP
Added entries (persons, corporate bodies, meetings, titles ...)
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Schmidt, S.
(author)
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Poulsen, H. F.
(author)
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Linnros, JanKTH,Mikroelektronik och tillämpad fysik, MAP(Swepub:kth)u1t79mee
(author)
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Yun, Sang HoKTH,Mikroelektronik och tillämpad fysik, MAP(Swepub:kth)u18jpr1x
(author)
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Di Michiel, M.
(author)
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Martin, T.
(author)
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KTHMikroelektronik och tillämpad fysik, MAP
(creator_code:org_t)
Related titles
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In:Nuclear Instruments and Methods in Physics Research Section A: Elsevier BV607:1, s. 141-1440168-90021872-9576
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