Detector Stack for Particle Spatial Resolution
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Solution Overview
Problem
Existing detectors, such as radiochromic film (RCF) and scintillation-based detectors, face challenges including manual analysis, limited miniaturization, poor energy resolution, and propagation/scattering effects, making them difficult to use for measuring spatial and spectral properties of particles effectively.
Innovation Solution
A detector stack comprising two detectors with generators and collectors arranged along a direction, where each detector generates and collects photons or charged particles to provide high spatial resolution and real-time data, with optional absorbers and filters to enhance spectral resolution and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radiochromic film detectors are used to measure particle spatial distribution, then spatial resolution is achieved, but the detector requires manual extraction and analysis after each measurement, reducing productivity
Solution Approach 1:
The patent replaces the mechanical/manual system of film extraction and physical analysis with an automated optical detection system. The readout device optically detects the luminescent centers directly through the film substrate, eliminating the need for manual film handling and physical extraction, thereby enabling automated high-throughput measurement while maintaining spatial resolution
Solution Approach 2:
The film substrate serves dual functions: it both records the particle track information through luminescent centers and acts as the detection medium itself. The readout device reads through the transparent substrate, allowing the film to serve its own detection purpose without requiring separate processing steps or manual intervention
2Speed
If scintillation-based detectors are used for real-time particle detection, then measurement speed is improved, but energy resolution deteriorates due to propagation and scattering effects
Solution Approach 1:
The patent extracts and separates the detection function from the recording medium. The readout device is positioned to optically detect luminescent centers through the transparent film substrate without the detector components being in direct contact with the particle path. This eliminates propagation and scattering effects that would otherwise degrade energy resolution, while maintaining real-time detection capability
Solution Approach 2:
The transparent film substrate acts as an intermediary medium that allows optical detection to occur through it without significant attenuation or scattering. This intermediary approach enables the readout device to detect particle-induced luminescent centers without the detector itself interfering with the particle beam or suffering from propagation effects
3Measurement precision
If multiple detector layers are stacked to improve spectral resolution, then energy measurement capability is enhanced, but device complexity increases
Solution Approach 1:
The patent implements a universal detector design where a single detector structure with multiple readout devices can perform both spatial distribution measurement and spectral resolution measurement simultaneously. The readout devices are arranged to detect different aspects of the particle interaction, allowing one detector system to serve multiple measurement functions without requiring separate detector stacks
Solution Approach 2:
Instead of adding detector layers in the vertical dimension to improve spectral resolution, the patent utilizes the lateral dimension by arranging multiple readout devices in different spatial positions. This dimensional approach allows spectral information to be extracted from spatially distributed signals, improving spectral resolution without increasing vertical detector complexity
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 stack improves usability and spatial resolution, enabling real-time measurement of particle energy and spatial distribution with enhanced spectral resolution, allowing for single-shot analysis of particle properties.
Implementation Method 1
a generator configured to generate photons or charged particles when interacting with incident particles, the photons or charged particles being indicative of energies of the respective incident particles
Implementation Method 2
a collector configured to collect the generated photons or charged particles and output an output signal representing information of a one-dimensional travelling direction of the incident particles
Data Source
AI summary
A detector stack includes a first detector and a second detector arranged along a first direction. Each of the first detector and second detector comprise a generator and a collector. The generator is configured to generate photons or charged particles when interacting with incident particles, the photons or charged particles being indicative of energies of the respective incident particles. The collector is configured to collect the generated photons or charged particles and output an output signal representing information of a one-dimensional travelling direction of the incident particles. The collector of the first detector and the collector of the second detector are configured to respectively output output signals representing different one-dimensional travel directions of the incident particles.