Performance evaluation method and system for high-energy particle detectors

Abstract

The invention provides a method and system for evaluating the performance of a high-energy particle detector. The method includes: calculating the omnidirectional flux of high-energy protons through AP8; using numerical simulation methods to obtain the long-period variation trend of high-energy proton vertical cut-off stiffness caused by long-period changes in the geomagnetic field; The function curve relationship of the function curve; through the above function curve relationship, the particle flux calculated by AP8 is corrected; the distribution characteristics of the throwing angle of the high-energy proton corresponding to the cut-off stiffness of the satellite observation point are obtained through numerical calculation; according to the throwing angle of the high-energy proton corresponding to the cut-off stiffness distribution characteristics, combined with the corrected omnidirectional flux obtained by the AP8 model, the high-energy particle flux at different throwing angles is obtained; the particle flux detected by the high-energy particle detector of the electromagnetic satellite is obtained; the satellite observation and numerical model obtained above are used to pass Quantities, statistical analysis of the two, including the overall trend, linear correlation, absolute deviation, standard deviation and the size of the mean square error used to evaluate the parameters of the detector performance. The method and system for evaluating the performance of the high-energy particle detector provided by the invention can realize the effective evaluation of the on-orbit performance of the particle detector.

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...

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Problems solved by technology

[0007] The AP9 model currently seen on foreign websites and journal organizations is the latest proton radiation environment model developed by the United States, but due to the US technology blockade and other reasons, we have not been able to obtain its program in China

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