Search: onr:"swepub:oai:DiVA.org:kth-30716" >
Structured scintill...
Structured scintillators for X-ray imaging with micrometre resolution
-
Olsen, U. L. (author)
-
Schmidt, S. (author)
-
Poulsen, H. F. (author)
-
show more...
-
- Linnros, Jan (author)
- KTH,Mikroelektronik och tillämpad fysik, MAP
-
- Yun, Sang Ho (author)
- KTH,Mikroelektronik och tillämpad fysik, MAP
-
Di Michiel, M. (author)
-
Martin, T. (author)
-
show less...
-
(creator_code:org_t)
- Elsevier BV, 2009
- 2009
- English.
-
In: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576. ; 607:1, s. 141-144
- Related links:
-
https://urn.kb.se/re...
-
show more...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- 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.
Keyword
- Scintillator
- Detector
- Imaging
- Hard X-ray
- Simulation
- TECHNOLOGY
- TEKNIKVETENSKAP
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database