Simulation of the in-flight background for HXMT/HE

CORC > 高能物理研究所 > 中国科学院高能物理研究所 > 粒子天体物理中心

	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
通讯作者	谢斐
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.
学科主题	Astronomy & Astrophysics
类目[WOS]	Astronomy & Astrophysics
收录类别	SCI
WOS记录号	WOS:000366632000013
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228843]
专题	高能物理研究所_粒子天体物理中心
推荐引用方式 GB/T 7714	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.