Flux Detector Amplifier Thickness for Energy-Independent Calibration
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Solution Overview
Problem
Existing detectors for measuring ionizing radiation with varying energies require significant thicknesses of heavy materials, leading to increased size and complexity, complicating their fabrication and necessitating complex calibration corrections.
Innovation Solution
A detector design using a thin layer of amplifying material and transducing material, optimized to maintain consistent calibration across a wide energy range, by employing a specific thickness of amplifying material that ensures equal photon generation for different energy levels, thereby reducing the detector's size and simplifying fabrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a significant thickness of heavy material is used to measure high-energy incident ionizing radiation, then the detector achieves consistent calibration across a wide energy range, but the detector's size increases and fabrication becomes more complex
Solution Approach 1:
The heavy material layer is divided into multiple sub-layers with different thicknesses. Each sub-layer is optimized for specific energy ranges, allowing the detector to maintain consistent calibration across a wide energy spectrum while reducing the total thickness compared to a single thick layer.
Solution Approach 2:
The thickness parameter of the heavy material layers is optimized to achieve energy-independent calibration. By carefully selecting specific thickness values for each sub-layer, the detector responds equally to different radiation energies, eliminating the need for large thicknesses while maintaining calibration consistency.
2Reliability
If a significant thickness of heavy material is used to measure high-energy incident ionizing radiation, then the detector achieves consistent calibration across a wide energy range, but fabrication complexity increases
Solution Approach 1:
The heavy material layer is divided into multiple sub-layers with different thicknesses. Each sub-layer is optimized for specific energy ranges, allowing the detector to maintain consistent calibration across a wide energy spectrum while reducing the total thickness compared to a single thick layer.
Solution Approach 2:
The thickness parameter of the heavy material layers is optimized to achieve energy-independent calibration. By carefully selecting specific thickness values for each sub-layer, the detector responds equally to different radiation energies, eliminating the need for large thicknesses while maintaining calibration consistency.
3Length of stationary object
If a thin layer of amplifying material is used, then the detector size is reduced, but the calibration may vary across different energy ranges
Solution Approach 1:
The heavy material layer is divided into multiple sub-layers with different thicknesses. Each sub-layer is optimized for specific energy ranges, allowing the detector to maintain consistent calibration across a wide energy spectrum while reducing the total thickness compared to a single thick layer.
Solution Approach 2:
The detector uses a composite structure combining multiple materials (amplifying material, transducing material, and heavy material sub-layers) with optimized thicknesses. This composite approach enables thin overall dimensions while maintaining energy-independent calibration through the synergistic effect of different material layers.
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
The detector achieves consistent calibration across a wide energy range, reducing the need for complex corrections and maintaining sensitivity, while minimizing size and fabrication complexity.
Implementation Method 1
The amplifying material is a material which, when it is traversed by primary ionizing radiation, generates secondary ionizing radiation with a lower energy than the primary ionizing radiation
Implementation Method 2
the transducing material is a luminescent material which, when it is excited by secondary ionizing radiation, generates photons
Data Source
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Figure 7
AI summary
This method for manufacturing a flux detector of a first and a second incident ionising radiation comprises: - determining (92) the abscissa em of a point of intersection between a first and second curve, the first and second curves representing the change in the number of photons or electrical charges generated per second by a transducer material as a function of the total thickness of an amplifier material when the transducer material is irradiated, through this thickness of transducer material, by, respectively, the first and second incident ionising radiation, then - selecting (94) a total thickness of the amplifier material between 0.9em and 1.1em and producing the detector with this selected thickness of amplifier material.