Simulation of the in-flight background for HXMT/HE
Xie F(谢斐); Zhang J(张娟); Song LM(宋黎明); Xiong SL(熊少林); Guan J(关菊); Xie, F; Zhang, J; Song, LM; Xiong, SL; Guan, J
刊名ASTROPHYSICS AND SPACE SCIENCE
2015
卷号360期号:2页码:47
关键词HXMT Geant4 Background Simulation
学科分类Astronomy & Astrophysics
DOI10.1007/s10509-015-2559-1
通讯作者谢斐
文章类型Article
英文摘要The Hard X-ray Modulation Telescope (HXMT) is a broad-band X-ray astronomical satellite from 1 to 250 keV. Understanding the X-ray background in detail will help to achieve a good performance of the instrument. In this work, we make use of the mass modeling technique to estimate the background of High Energy Telescope (HE) aboard HXMT. It consists of three steps. First, we built a complete geometric model of HXMT. Then based on the investigation about the space environment concerning HXMT low-earth orbit, in our simulation we considered cosmic rays, cosmic X-ray background (CXB), South Atlantic Anomaly (SAA) trapped particles, the albedo gamma, and neutrons from interaction of cosmic rays with the Earth's atmosphere. Finally, the Shielding Physics List supplied by Geant4 collaborations was adopted. According to our simulation, (1) the total background of HXMT/HE is about 540 count/s on average over 20-250 keV energy band after 100 days in orbit; (2) the delayed component caused by cosmic rays and SAA trapped particles dominates the full energy band of HXMT/HE; (3) some emission lines are prominent in the background continuum spectrum and will be used for inorbit calibration; (4) the estimated sensitivity is similar to 0.1 mCrab at 50 keV with an exposure of 10(6) s.
类目[WOS]Astronomy & Astrophysics
收录类别SCI
WOS记录号WOS:000366632000013
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228843
专题中国科学院高能物理研究所_粒子天体物理中心_期刊论文
中国科学院高能物理研究所_粒子天体物理中心
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Xie F,Zhang J,Song LM,et al. Simulation of the in-flight background for HXMT/HE[J]. ASTROPHYSICS AND SPACE SCIENCE,2015,360(2):47.
APA 谢斐.,张娟.,宋黎明.,熊少林.,关菊.,...&Guan, J.(2015).Simulation of the in-flight background for HXMT/HE.ASTROPHYSICS AND SPACE SCIENCE,360(2),47.
MLA 谢斐,et al."Simulation of the in-flight background for HXMT/HE".ASTROPHYSICS AND SPACE SCIENCE 360.2(2015):47.
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