High-energy particle detector performance evaluation method and system

A technology of high-energy particles and detectors, applied in instruments, radiation measurement, etc., can solve problems such as inability to obtain programs, and achieve the effects of improving linear correlation, correcting mismatches, and reducing mean square error.
CN113126142AActive Publication Date: 2021-07-16NAT INST OF NATURAL HAZARDS MINISTRY OF EMERGENCY MANAGEMENT OF CHINA
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NAT INST OF NATURAL HAZARDS MINISTRY OF EMERGENCY MANAGEMENT OF CHINA
Publication Date
2021-07-16

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Abstract

The invention provides a high-energy particle detector performance evaluation method and system. The method comprises the following steps: calculating the omnidirectional flux of high-energy protons through AP8; obtaining a long-period change trend of the high-energy proton vertical cut-off stiffness caused by long-period change of the geomagnetic field by using a numerical simulation method; fitting to obtain a function curve relationship between the long-period relative change of the cut-off stiffness and time; correcting the particle flux calculated by the AP8 according to the function curve relation; obtaining the throwing angle distribution characteristics of the cut-off stiffness corresponding to the high-energy protons of the satellite observation points through numerical calculation; according to the throwing angle distribution characteristics of the cut-off stiffness corresponding to the high-energy protons, combining the corrected omnidirectional flux obtained by the AP8 model to obtain the high-energy particle flux of different throwing angles; obtaining particle flux detected by an electromagnetic satellite high-energy particle detector; and performing statistical analysis on the satellite observation and the numerical model flux by using the obtained satellite observation and numerical model flux to obtain parameters including the overall trend, the linear correlation, the absolute deviation, the standard deviation and the mean square deviation of the satellite observation and numerical model flux for evaluating the performance of the detector. The high-energy particle detector performance evaluation method and system provided by the invention can realize effective evaluation of the on-orbit performance of the particle detector.
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Description

technical field

[0001] The invention relates to the technical field of high-energy particle detection, in particular to a method and system for evaluating the performance of a high-energy particle detector. Background technique

[0002] The high-energy particle radiation in near-Earth space is the main parameter of geophysical field satellite detection. It mainly uses the high-energy particle detector carried by the satellite to measure the energy, flux, and throwing angle of high-energy particles. Before the launch of the satellite, a ground calibration test will be carried out on the performance of the high-energy particle detector, mainly through the ground beamline method to effectively verify its energy linearity, detection efficiency, and geometric factors. After the satellite is in orbit, it is necessary to regularly evaluate the performance of the detector and make necessary parameter adjustments to obtain the best detection results. However, since general detectors...

Claims

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