空间中能电子多次散射对探测结果的影响
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摘要
使用MC法模拟了中能电子的多次散射过程,对不同能量中能电子在多次散射条件下的探测结果进行了比较。使用电子加速器对研制的中能电子探测器进行了测试,验证了该物理过程对探测结果的影响。分析了加速器测试和仿真结果的异同,提出了针对多次散射过程的传感器优化设计方法。
In this work,the transport process of medium-energy electron in silicon detector was simulated using Geant4,and the impact of multiple scattering on detection results under different conditions was analyzed. Accelerator test results of a medium-energy electron detector(MEED) were consistent with the simulation results. Based on both test and simulation results,some optimization methods of detector design are proposed to reduce the impact of multiple scattering.
In this work,the transport process of medium-energy electron in silicon detector was simulated using Geant4,and the impact of multiple scattering on detection results under different conditions was analyzed. Accelerator test results of a medium-energy electron detector(MEED) were consistent with the simulation results. Based on both test and simulation results,some optimization methods of detector design are proposed to reduce the impact of multiple scattering.
引文
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[2]Robin Gubby,John Evans.Space environment and satellite design[J].Journal of Atmospheric and Solar-Terrestrial Physics,2002,64:1723-1733.
[3]Vampola A L.Analysis of environmentally induced spacecraft anomalies[J].Journal of Spacecraft&Rockets,2015,31(2):154-159.
[4]Baker D N,Higbie P R,Belian R D,et al.Do jovian electrons influence the terrestrial outer radiation zone[J].Geophys.Res,Lett,2013,6(6):531-534.
[5]Baker D N,Kanekal S,Looper M,et al.Jovin,solar and other possible source of radiation belt particles[C].In:Lemaire D HJ ed Radiation Belts Models and Standard.Washington D C:AGU Geophysical Monograph,2013,97:49-55.
[6]Carrington A,Nicholson H W,et al.Electron backscattering from a silicon detector from 0.182 to0.579 Me V[J].Nucl Instrum Methods A,1986,248:425-428.
[7]Torsti J,Valtonen E,et al.Energetic particle experiment ERNE[J].Solar Physics,1995,162:505-531.
[8]Stone E C,Cohen C M S,et al.The solar isotope spectrometer for the Advanced Composition Explorer[J].Space Sci Rev,1998,86:357-408.
[9]Stone E C,Cohen C M S,Cook W R,et al.The cosmic-ray isotope spectrometer for the Advanced Composition Explorer[J].Space Sci Rev,1998,86:285-356.
[10]Muller-Mellin R,Kunov H,et al.COSTEP—Comprehensive suprathermal and energetic particle analyzer[J].Solar Physics,1995,162:483-504.
[11]Marsden R G,Henrion J,Sanderson T R,et al.Calibration of a space-borne charged particle telescope using protons in the energy range 0.4 to20 Me V[J].Nucl Instrum Methods in Phys Res,1984,221:619-626.