Method for determining width value of avalanche air gap of gas detector and related device
By obtaining the energy spectrum group of the anode readout plate at different voltages and combining relevant parameters to calculate and fit the width value of the avalanche air gap, the problem of difficulty in accurately determining the width value of the avalanche air gap in the prior art is solved, and the measurement accuracy is improved.
CN119803361AActive Publication Date: 2025-04-11CHINA SPALLATION NEUTRON SOURCE SCI CENT +2
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Patent Information
- Application Number
- CN202411905687.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2044-12-23
AI Technical Summary
Technical Problem
The prior art is difficult to accurately determine the width value of the avalanche air gap of the Micromegas gas detector, affecting the measurement accuracy.
Method used
By obtaining the energy spectrum group when the anode readout plate is irradiated by the radiation source at multiple different voltages, combining the original number of electrons, detector gain, gas parameters and photon feedback terms, the width value of the avalanche air gap at different voltages is calculated and fitted to determine the width value of the final avalanche air gap.
Benefits of technology
Improve the accuracy of the avalanche air gap width value and enhance the measurement accuracy of the gas detector at different voltages.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a method for determining the width value of an avalanche air gap of a gas detector and a related device, and belongs to the technical field of detectors. The method comprises the following steps: sequentially obtaining a plurality of energy spectrum groups of an anode reading plate under a plurality of different voltages when the anode reading plate is irradiated by a radioactive source; obtaining an original electron number; for the energy spectrum group corresponding to each voltage, obtaining the detector gain corresponding to the voltage based on the energy spectrum group and the primary electron number; determining a gas parameter and a photon feedback item corresponding to the voltage; determining a width value of an avalanche air gap under the voltage based on a detector gain corresponding to the voltage, a gas parameter corresponding to the voltage and a photon feedback item corresponding to the voltage; and determining the final width value of the avalanche air gap of the gas detector based on the width values of the avalanche air gaps under the plurality of different voltages. According to the invention, the accuracy of the determined width value of the avalanche air gap can be improved, so that the avalanche air gap of the gas detector is accurately calibrated.
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