Direct Radiation Converter Temperature Control for Polarization
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Solution Overview
Problem
Direct radiation converters face limitations due to nonlinear relationships between incident radiation and generated electric signals, particularly at high radiation densities, caused by intrinsic impurities leading to polarization, which restricts the maximum detectable radiation density.
Innovation Solution
Operating a direct radiation converter within a temperature range of 38° C. to 55° C. to minimize polarization effects, utilizing a direct conversion element that maintains high electron mobility and reduces the influence of hole-forming impurities, allowing for uninhibited electron mobility and efficient detection of high radiation fluxes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If direct radiation converter operates at room temperature, then device complexity is low, but polarization effect occurs limiting maximum detectable radiation density
Solution Approach 1:
The patent applies parameter changes by operating the direct radiation converter at elevated temperatures (38°C to 55°C) rather than room temperature. This temperature parameter change reduces the polarization effect caused by intrinsic impurities, allowing the detector to handle high radiation fluxes (>10^8 photons/mm²/s) without severe restrictions on maximum detectable radiation density.
2Reliability
If temperature is increased to reduce polarization, then maximum detectable radiation density improves, but energy resolution may deteriorate
Solution Approach 1:
The patent optimizes the temperature parameter within a specific range (38°C to 55°C) to achieve a balance between reducing polarization effects and maintaining acceptable energy resolution. This controlled parameter change allows the system to handle high radiation fluxes while keeping thermal leakage current and energy resolution degradation within acceptable limits.
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 temperature range of 38° C. to 55° C. enables the direct radiation converter to handle high radiation fluxes without polarization, ensuring artifact-free measurements and improved signal stability and reproducibility, making it suitable for both high and low radiation fluxes in imaging diagnostic equipment.
Implementation Method 1
a direct conversion element (4) designed for detecting gamma or X-ray radiation and having a temperature maintained at at least 38° C. and at most 55° C.
Implementation Method 2
X-ray detectors, which have an X-ray conversion layer or a scintillation layer which first of all converts incident X-ray radiation into visible light which can be detected using photodiodes
Data Source
AI summary
A direct radiation converter is disclosed. In at least one embodiment, the direct radiation converter is operated using a direct conversion element having a temperature of at least 38° C. and at most 55° C., and designed for detecting X-ray radiation.