The Application Of Anti-Coincidence Detective Cup Technology In Space Particle Detection

In recent years, the development of China’s space particle detection technology rapidly,In many satellites equipped with particle radiation detector for space research and satellite security.However, due to the complexity and detection principle’s limitations of the space environment, the measurement process will inevitably interfere with the measurement result and measurement accuracy by interference particles.Therefore, at home and abroad the satellite payloads have adopted a number of techniques to exclude pollution particles in which the Anti-coincidence detection cup technology is a very effective means.Scintillator Anti-coincidence detection system technology is rarely used in China’s space probe load measurements.This topic is based on the SPORT program,based on the orbit of the space environment and particle measurement needs, Through an investigation of the state about the technology of foreign Anti-coincidence detect cup, study the technology of space anti-coincidence detection cup, aims to achieve a breakthroughs in the corresponding key technologies.This article is based on the research of foreign Anti-coincidence detection Cup technology, details of the composition of the Anti-coincidence detection cup system,on this basis, focuses on the Anti-coincidence detection cup design, including materials selection, Shape processing, In this paper,we innovative use a new type of photoelectric detector---silicon photo-multiplier tube as the Anti-coincidence cup measuring system back-end light detector through the basis of comparison of different photo-detectors,and design the detection system,including the electronic read-out circuit module and signal collection function module, Write FPGA program in Quartus II environment using VHDL to capture the pulse number,Through the data acquisition card to collect the FPGA output count,Write a PC program in Lab View environment for data display.Then the electronic read-out circuit module and signalcollection function module were tested separately, Verify the correctness of the system’s design through the analysis of the results,Finally,detect the whole system through 90Sr/90 Yi Radioactive Sources,the number of particle events is about 30 under no circumstances sources environment,and the number of particle events is around 3200 with the circumstances sources environment,The number of events has significant gaps before and after, validate the anti-coincidence cup system’s function furtherly,Combined with the problems in the experiment, the current problems in the circuit system are described and proposed solutions for improvement.lay a good foundation by the results of this research the technology in space applications in the rail.