本文選題：輻射效應(yīng) + 射線追蹤法　； 參考：《宇航學(xué)報》2017年03期

【摘要】：為快速準確地評估航天器內(nèi)部的空間輻射效應(yīng),本文基于Open CASCADE工具包和Geant4開發(fā)了一套空間環(huán)境輻射效應(yīng)評估軟件SEREAT。SEREAT扇段分析模塊讀取計算機輔助設(shè)計(CAD)文件建立航天器三維模型,利用射線追蹤方法計算航天器內(nèi)任意位置的屏蔽厚度分布,并將CAD文件直接轉(zhuǎn)換為Geant4能夠識別的幾何描述語言(The Geometry Description Markup Language,GDML),為基于Geant4的三維空間輻射效應(yīng)評估提供幾何建模數(shù)據(jù)接口。在此基礎(chǔ)上,SEREAT常規(guī)輻射效應(yīng)模塊讀取屏蔽厚度分布,完成艙內(nèi)屏蔽能譜、單粒子翻轉(zhuǎn)、總劑量等輻射效應(yīng)的計算。利用本方法對地球同步軌道衛(wèi)星的輻射效應(yīng)進行計算,結(jié)果表明SEREAT可以滿足復(fù)雜航天器輻射效應(yīng)分析的需求。
[Abstract]:In order to quickly and accurately evaluate the space radiation effect inside the spacecraft, Based on Open CASCADE Toolkit and Geant4, a set of space environment radiation effect assessment software SEREAT.SEREAT fan segment analysis module reading computer aided design (CAD) file is developed to build three-dimensional model of spacecraft. The radiation tracing method is used to calculate the shielding thickness distribution at any position in the spacecraft. The CAD file is transformed directly into Geant4 recognizable geometric description language (GDML), which provides a geometric modeling data interface for 3D radiation effect evaluation based on Geant4. On this basis, the SEREAT conventional radiation effect module reads the shielding thickness distribution, completes the calculation of the shielding energy spectrum, single particle flip, total dose and other radiation effects in the cabin. The radiation effect of geosynchronous orbit satellite is calculated by using this method. The results show that SEREAT can meet the needs of complex spacecraft radiation effect analysis.
【作者單位】： 中國科學(xué)院國家空間科學(xué)中心;中國科學(xué)院大學(xué);
【基金】：國家重點研發(fā)計劃(2016YFB0501503)
【分類號】：V520.6;TP311.52

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