Gas detector fabrication method, gas detector, and ray detection device
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Solution Overview
Problem
Existing α-ray and β-ray detection devices face challenges in achieving low background and high resolution due to complex processing technologies and materials limitations, leading to difficulties in detection accuracy.
Innovation Solution
A gas detector fabrication method involving the fabrication of a signal readout plate with metal electrodes on an insulating layer, followed by pressing and surface processing to reduce surface roughness, and the integration of a resistive anode electrode and detector amplification assembly using low-radioactivity materials to prevent sparking and enhance resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If low-radioactivity materials are used to achieve low background detection, then the processing technology becomes complicated due to material texture and shape limitations
Solution Approach 1:
The detector is divided into multiple functional modules: signal readout plate, resistive anode electrode, and detector amplification assembly. Each module is fabricated separately using standardized processes and then assembled, avoiding the need to process low-radioactivity materials through complex monolithic fabrication steps.
Solution Approach 2:
A signal readout plate with metal electrodes on insulating layers is introduced as an intermediary component between the detection medium and the readout electronics. This allows standard electronic fabrication techniques to be used while maintaining compatibility with low-radioactivity detection requirements.
2Reliability
If existing detection devices are used to achieve low background, then the resolution is low making detection difficult
Solution Approach 1:
The signal readout plate incorporates metal electrodes with specific local geometries and the detector amplification assembly provides localized signal enhancement. These localized structural optimizations improve resolution without requiring uniform changes to the entire detector structure, thus maintaining compatibility with low-radioactivity materials.
Solution Approach 2:
The detector combines low-radioactivity materials with standard electronic materials (metal electrodes, insulating layers, amplification components) to create a composite structure. This allows the low-radioactivity portion to maintain low background while the composite structure provides enhanced resolution through precise geometric control of the metal and insulating components.
3Manufacturing precision
If complex processing technology is used to improve detection capability, then manufacturing cost and complexity increase
Solution Approach 1:
The detector fabrication is segmented into standardizable modules (signal readout plate, resistive anode electrode, amplification assembly) that can be manufactured using conventional techniques and assembled through standardized procedures, reducing overall processing complexity while maintaining detection capability.
Solution Approach 2:
The signal readout plate uses metal electrode patterns that can be replicated using standard PCB or thin-film fabrication techniques. These patterns are copied from design layouts through conventional photolithography or printing processes, enabling precise geometric control without complex custom processing.
Data Source
AI summary
A gas detector fabrication method is provided. The method includes: fabricating a signal readout plate: fabricating metal readout electrodes on an upper end surface of a lower insulating layer, and covering upper end surfaces of the metal readout electrodes with an upper insulating layer; pressing the signal readout plate and performing surface processing: pressing the signal readout plate on a substrate, and making a side, distant from the substrate, of the upper insulating layer to be a plane; fabricating a resistive anode electrode: fabricating a resistive layer on an upper end surface of the signal readout plate, and fixing a low-resistance electrode ring to a periphery of an upper end surface of the resistive layer; and fabricating a detector amplification assembly: fixing a support frame to an upper end of the low-resistance electrode ring, and fixing a micro-grid electrode to an upper end of the support frame.