Quantum Detector Module With Mixed Pixel Apertures
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Solution Overview
Problem
Conventional quantum detector modules face challenges in accurately determining the number and energy of quantum absorption events due to limitations in pixel aperture size, leading to erroneous detection at high quantum flow rates and impaired linearity.
Innovation Solution
A quantum detector module with a combination of detector pixels having two mutually different pixel apertures, allowing for precise determination by optimizing electrode sizes and spacings to adapt to varying quantum flow rates and energy ranges, and utilizing a scattered radiation collimator for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If detector pixels have uniform pixel apertures, then the detector structure is simple and easy to manufacture, but the measurement precision of quantum absorption events deteriorates due to inability to adapt to varying quantum flow rates
Solution Approach 1:
The patent applies local quality by creating detector pixels with different pixel aperture sizes in different regions of the detector. Specifically, detector pixels adjacent to scattered radiation collimator shadow zones have smaller pixel apertures, while those in central regions have larger pixel apertures. This local variation optimizes detection accuracy for different quantum flow rates and energy ranges in different spatial locations, resolving the contradiction between measurement precision and device complexity.
2Area of stationary object
If pixel aperture size is increased, then the detection area is enlarged, but the linearity and detection accuracy at high quantum flow rates deteriorate
Solution Approach 1:
The patent implements local quality by varying pixel aperture sizes across different detector regions. Detector pixels in central regions have larger apertures for optimal detection, while pixels adjacent to scattered radiation collimator shadow zones have smaller apertures to maintain linearity at high quantum flow rates. This spatial variation resolves the contradiction between detection area and detection reliability.
3Measurement precision
If detector pixels are positioned adjacent to scattered radiation collimator shadow zones, then scattered radiation detection is improved, but the pixel aperture must be reduced which decreases detection efficiency
Solution Approach 1:
The patent applies local quality by assigning different pixel aperture characteristics to different spatial locations. Detector pixels adjacent to scattered radiation collimator shadow zones are designed with smaller pixel apertures that optimize scattered radiation detection accuracy, while accepting reduced detection efficiency in these specific regions. This localized optimization resolves the contradiction between measurement precision for scattered radiation and overall productivity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise quantitative and energy-resolved determination of quantum absorption events by combining electrical signals from pixels with different apertures, enhancing detection accuracy and dynamic range across various quantum flow rates.
Implementation Method 1
For the, in particular direct, conversion of the quantum absorption events into electrical charges, the quantum detector module of at least one embodiment comprises a multiplicity of detector pixels
Implementation Method 2
During operation of the detector, a voltage is applied between the cover electrode and the individual electrodes, whereby electric fields form in the converter layer. Electrical charges generated in the active region of the electric fields of the detector pixels as a result of e.g. one or more quantum absorption events are separated from one another in the converter layer and accelerated
Data Source
AI summary
A quantum detector module for the quantitative and energy-resolved determination of quantum absorption events, a quantum detector, a method for determining quantum absorption events, a computer program product and a radiation detection device are disclosed. In at least one embodiment, the quantum detector module includes a multiplicity of detector pixels. In order to determine the quantum absorption events particularly precisely, in at least one embodiment it is provided that the detector pixels have at least two mutually different pixel apertures.