An x-ray imaging pixel detector based on a scintillating guides screen
2000 (English)In: IEEE Transactions on Nuclear Science, ISSN 0018-9499, E-ISSN 1558-1578, Vol. 47, no 4, 1483-1486 p.Article in journal (Refereed) Published
We have developed and preliminary tested a new digital X-ray imaging sensor based on a scintillating guide screen. The scintillating guides are used to channel the emitted visible light to the pixel detector. This enables us to avoid the well-known tradeoff between detection efficiency and spatial resolution which is encountered when a non-patterned scintillating layer is used on top of a CCD. A prototype has been fabricated using microtechnologies. The scintillator is CsI:T1 and the low-index cladding material used to channel the light is silicon dioxide. The performance of this prototype has been compared to that of a thick CsI single crystal. The results concerning the spatial resolution are quite promising and demonstrate a proof-of-principle. However, the performance in terms of signal to noise ratio and sensitivity have to be improved. These problems are currently addressed.
Place, publisher, year, edition, pages
2000. Vol. 47, no 4, 1483-1486 p.
IdentifiersURN: urn:nbn:se:kth:diva-20062ISI: 000089576200036OAI: oai:DiVA.org:kth-20062DiVA: diva2:338755
QC 201005252010-08-102010-08-10Bibliographically approved