Radiation detector, as well as a method for synchronized radiation detection

A radiation detector and radiation sensor technology, applied in the field of X-ray radiation, can solve the problems of low cost, large number of connections, etc., and achieve the effect of reducing accuracy requirements

Inactive Publication Date: 2005-09-28
SIEMENS AG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the further increase in the number of measurement channels, the number of connections required between the light sensor and the circuit is so large that conventional construction techniques have reached their limits
Furthermore, due to the high degree of integration of the circuit it is not easy to reduce the accumulated cost per measurement channel to the extent required to obtain a constant total circuit cost

Method used

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  • Radiation detector, as well as a method for synchronized radiation detection
  • Radiation detector, as well as a method for synchronized radiation detection
  • Radiation detector, as well as a method for synchronized radiation detection

Examples

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Embodiment Construction

[0022] Figure 1 takes a side view ( Figure 1B ) and top view ( Figure 1A) shows an example of a basic unit of an (Active Pixel Sensor) APS measurement pixel, as used in the radiation detector of the invention used as detector element. Therein, the radiation detector comprises a pixel matrix with m*n pixels (shown in dotted lines in the figure), which is produced on a CMOS silicon wafer as carrier base 15, wherein m and n are preferably greater than 10 . The basic unit represented by the solid line in Fig. 1 can be divided into three regions. The first area comprises the photosensitive area of ​​the photosensor 1 , which converts incident optical radiation into electrical current. Above the matrix of basic units is arranged a structured scintillator 14 for converting X-ray radiation into visible light. Suitable scintillator materials are known to the skilled person, for example, from the literature mentioned at the outset of the present application. By structuring the sci...

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Abstract

A radiation detector and a method are for synchronized radiation detection. The radiation detector has a two-dimensional arrangement of radiation sensors using APS technology, and evaluation electronics with an input for a synchronization signal. The evaluation electronics have two or more free-running current / frequency converters for conversion of analog signals from the radiation sensors to digital signals. A correction unit is also provided for correction of errors in the digital signals which are caused by time discrepancies in a nominal time period, which is predetermined by the synchronization signal, for detection of the radiation from conversion events of the free-running current / frequency converters. The radiation detector can be produced at low cost, and allows simplified and scalable modular construction.

Description

technical field [0001] The invention relates to a radiation detector for the acquisition of synchrotron radiation, the radiation detector comprising a two-dimensional array of radiation sensors according to APS technology and an evaluation circuit with an input for a synchronization signal, the two-dimensional array of radiation sensors and the evaluation circuit are arranged on or integrated into the carrier base. The invention also relates to a method for the simultaneous acquisition of radiation, in particular X-ray radiation, with a two-dimensional arrangement of radiation sensors according to APS technology, wherein the analog signals of the radiation sensors are converted into digital signals. Background technique [0002] Radiation detectors of the described type and methods can be used in many technical fields for detecting radiation, for example optical radiation or X-ray radiation. Important fields of application of radiation detectors relate to x-ray technology, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/20A61B6/03G01T1/17G01T1/24G01T1/29H01L27/14H01L31/09H04N5/32
CPCG01T1/2928
Inventor 比约恩·海斯曼托马斯·赖歇尔
Owner SIEMENS AG
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