X-ray detector unit with solid converter
AssigneeXCounter AB
InventorsTom Francke, Vladimir Peskov
Life of this patent
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Abstract
A detector unit for two-dimensional detection of incoming radiation from an X-ray source, primarily for use in X-ray radiography. The unit includes a solid material structure (2) having a plurality of passages (6) extending therein and comprising surface portions (7) comprising a conversion medium. The surface portions of the passages are inclined, so that the incoming radiation impinges at an acute angle onto the surface portions. In this way, the efficiency of the detector and the positional resolution are improved.
Claims14
A detector unit for two-dimensional detection of incoming radiation from an X-ray source, comprising:
- a solid material structure including a conversion medium in which said incoming radiation causes the emission of electrons into at least one drift region,
- an anode and cathode for generating an electric field in said at least one drift region, and
- a detector sensitive in two dimensions adjacent to said solid material structure so as to detect electrons originating from said at least one drift region in response to said incoming radiation, wherein
- a plurality of passages, arranged in a two-dimensional array, are located close to each other and extend within the solid material structure,
- the passages having surface portions including the conversion medium and being inclined at an angle relative to the direction of the incoming radiation,
- whereby said incoming radiation will impinge onto said surface portions at an acute angle and cause the emission of electrons from said surface portions into said drift regions.
A solid material structure for use in a detector unit having a plurality of passages, arranged in a two-dimensional array, extending within the solid material structure, passages having surface portions including a conversion medium for converting incoming radiation from an X-ray source, impinging at an acute angle onto the surface portions, into electrons, some of which will escape into the passages so as to be available for two-dimensional detection in response to the incoming radiation.
Dependencies are inferred from the claim text.