Arc-Shaped Radiation Detector Modules for Thermal Stability
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Solution Overview
Problem
Conventional radiation detectors in scanning systems face issues with temperature control and mechanical stability, leading to artifacts and noise in images, as well as difficulties in placement and replacement of detector modules.
Innovation Solution
A radiation detector system with an arc portion that supports detector modules and maintains temperature stability through thermal communication with heat transfer apparatuses, reducing mechanical stress and improving accessibility for module replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional detector cells are individually cooled by airflow, then temperature control is attempted, but temperature stability deteriorates due to changes in airflow when scanner rotational speed changes
Solution Approach 1:
The detector array is divided into multiple independent detector modules, each with its own thermal management capabilities. This segmentation allows each module to maintain stable temperature independently, reducing the impact of airflow variations on overall temperature stability.
Solution Approach 2:
A thermal coupling medium or heat sink structure is introduced between the detector cells and the cooling system. This intermediary provides a stable thermal pathway that is less sensitive to airflow variations, thereby improving temperature stability and reducing image artifacts.
2Reliability
If conventional detector cells are used in rotating scanning systems, then radiation detection is achieved, but mechanical stress and bending increase due to rotation
Solution Approach 1:
The detector modules are mounted on a curved or arc-shaped support structure that follows the rotational path. This curvature design distributes mechanical stresses more evenly across the detector cells, reducing bending and deflection during rotation while maintaining detection functionality.
Solution Approach 2:
Flexible mounting structures or thin-film support elements are used to accommodate rotational movements. These flexible components absorb mechanical stress and prevent rigid constraints that would cause bending, thereby maintaining detector integrity during rotation.
3Area of stationary object
If conventional detector cell arrangements are used, then radiation detection coverage is achieved, but placement and alignment difficulty increases
Solution Approach 1:
The large detector array is segmented into multiple standardized modules that can be independently manufactured and assembled. Each module has pre-defined alignment features, simplifying the placement and alignment process while maintaining overall coverage area.
Solution Approach 2:
Standardized mounting interfaces and alignment mechanisms are designed to be universally applicable across all detector modules. This universality enables consistent placement and alignment procedures regardless of the specific module position or orientation, reducing manufacturing complexity.
4Reliability
If conventional detector cells are used, then radiation detection is achieved, but access for replacement deteriorates when detector cells fail
Solution Approach 1:
The detector system is divided into independently replaceable modules. When a detector cell fails, only the specific module containing the defective cell needs to be accessed and replaced, rather than the entire detector array. This segmentation significantly improves accessibility and simplifies repair operations.
Solution Approach 2:
Detector modules are pre-assembled with all necessary components and connections before installation. This preliminary preparation allows for quick replacement of entire modules rather than individual cells, reducing repair time and improving accessibility during maintenance.
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
This configuration enhances image quality by minimizing temperature fluctuations and mechanical stress, improving the accuracy and serviceability of the detector modules.
Implementation Method 1
a second side in thermal communication with one or more heat transfer apparatuses for maintaining a temperature of the detector modules
Data Source
AI summary
A radiation scanning system comprises a radiation detector configured to measure at least some radiation. The radiation detector comprises an arc portion exhibiting a semicircular shape, the arc portion comprising a plurality of facets on a side thereof, a detector module coupled to each facet, the detector module comprising a base portion comprising a first substantially planar surface in contact with the facet, a detector unit coupled to a second substantially planar surface of the base portion, the second substantially planar surface parallel with the first substantially planar surface, and a cooling structure in thermal communication with a side of the arc portion opposite the plurality of facets. Related radiation detectors and radiation systems are also disclosed.