Occlusion-Based Radiation Detector Layout for Source Localization
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Solution Overview
Problem
Existing radiation detection systems are non-directional and require multiple devices for detecting gamma and neutron radiation, leading to inefficiency and imprecision, and dual-mode detectors suffer from pulse pileup and low yields.
Innovation Solution
A modular detection system with adjacent gamma and neutron detectors that utilize occlusion principles to determine direction and location by comparing radiation counts and energy spectra, using scintillators and sensors to process gamma and neutron radiation, and a processor to generate radiation maps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate detection devices are used for gamma and neutron radiation, then detection capability for multiple radiation types is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent combines separate gamma and neutron detection devices into a single integrated radiation detection device. The device includes a first detection unit for gamma radiation and a second detection unit for neutron radiation, both integrated within one device structure. This merging approach maintains the ability to detect multiple radiation types while reducing overall device complexity and improving ease of operation.
2Device complexity
If dual-mode detectors are used to detect both gamma and neutron radiation, then device complexity is reduced, but measurement precision deteriorates due to pulse pileup
Solution Approach 1:
The patent segments the detection device into separate detection units: a first detection unit for gamma radiation and a second detection unit for neutron radiation. Each unit is optimized for its specific radiation type, avoiding the pulse pileup problem that occurs in dual-mode detectors. The processor then integrates data from both segmented units to provide comprehensive radiation detection with high measurement precision.
3Device complexity
If non-directional detection systems are used, then device complexity is reduced, but measurement precision of source location deteriorates
Solution Approach 1:
The patent introduces asymmetric spatial arrangement of multiple detection units within the radiation detection device. The first and second detection units are positioned at different locations and orientations, creating asymmetric detection geometry. This asymmetry enables the processor to determine directional information and localize radiation sources by analyzing the spatial distribution and intensity differences of detected radiation across the asymmetrically positioned units.
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
Accurately determines the direction and type of radiation sources within a small angular cone, enabling precise localization and discrimination between sources, improving efficiency and reducing the need for multiple devices.
Implementation Method 1
using scintillators and sensors to process gamma and neutron radiation
Data Source
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AI summary
Various techniques are provided to detect the direction and location of one or more radiation sources. In one example, a system includes a plurality of radiation detectors configured to receive radiation from a radiation source. A first one of the radiation detectors is positioned to at least partially occlude a second one of the radiation detectors to attenuate the radiation received by the second radiation detector. The system also includes a processor configured to receive detection information provided by the first and second radiation detectors in response to the radiation, and determine a direction of the radiation source using the detection information. A modular system including gamma radiation detectors and neutron radiation detectors and related methods are also provided. In some cases, radiation source type may be determined in addition to or separate from radiation source direction.