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	Comparison of simulated backgrounds with in-orbit observations for HE, ME, and LE onboard Insight-HXMT 期刊论文 OAI收割 Astrophysics and Space Science, 2020, 卷号: 365, 页码: 158 作者: HXMT \| 收藏 \| 浏览/下载：53/0 \| 提交时间：2022/02/08 Insight-HXMT Geant4 simulation Background observation Astrophysics - Instrumentation and Methods for Astrophysics Abstract: Insight-HXMT, the first X-ray astronomical satellite in China, aims to reveal new sources in the Galaxy and to study fundamental physics of X-ray binaries from 1 to 250 keV. It has three collimated telescopes, the High Energy X-ray telescope (HE), the Medium Energy X-ray telescope (ME), and the Low Energy X-ray telescope (LE). Before the launch, in-orbit backgrounds of these three telescopes had been estimated through Geant4 simulation, in order to investigate the instrument performance and the achievement of scientific goals. In this work, these simulated backgrounds are compared with in-orbit observations. Good agreements are shown for all three telescopes. For HE, (1) the deviation of the simulated background rate after two years of operation in space is 5 % from the observation (2) the total background spectrum and the relative abundance of the 67 keV line show long-term increases both in simulations and observations. For ME, (1) the deviation of simulated background rate is within 15 % from the observation, and (2) there are no obvious long-term increase features in the background spectra of simulations and observations. For LE, the background level given by simulations is also consistent with observations. The consistencies of these comparisons validate that the Insight-HXMT mass model, i.e., space environment components and models adopted, physics processes selected, and detector constructions built, is reasonable. However, the line features at 7.5 and 8.0 keV, which are obvious in the observed spectra of LE, are not evident in simulations. This might result from uncertainties in the LE constructions.
	Design and investigation of absolute radiance calibration primary radiometer 期刊论文 OAI收割 IET SCIENCE MEASUREMENT & TECHNOLOGY, 2018, 卷号: 12, 期号: 8, 页码: 994-1000 作者: Wang Yupeng; Xia Zhiwei; Luo Yang; Wang Kai; Fang Wei \| 收藏 \| 浏览/下载：82/0 \| 提交时间：2019/08/26 radiometry temperature control geophysical equipment cryogenics calibration radiometers power measurement calibration precision space remote sensor absolute radiance calibration primary radiometer ARCPR irradiance calibration standard mechanical cryogenic absolute radiometer cryogenic environment Stryn-type pulse tube cryocooler high-precision temperature controllers detector characteristics measurement radiometric calibration standard
	The Ground Simulation of Spacecraft Discharge Impacts on the Space Environment Detectors 期刊论文 OAI收割 IEEE TRANSACTIONS ON PLASMA SCIENCE, 2016, 卷号: 44, 期号: 7, 页码: 1247-1253 作者: Wang, Jinlong; Zhang, Zhenlong 收藏 \| 浏览/下载：25/0 \| 提交时间：2016/11/08 Ground simulation method mitigation method space environment detector spacecraft charge and discharge
	Inspection focus technology of space tridimensional mapping camera based on astigmatic method (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China 作者: Wang Z.; Wang Z.; Zhang L.; Zhang L. 收藏 \| 浏览/下载：28/0 \| 提交时间：2013/03/25 The CCD plane of the space tridimensional mapping camera will be deviated from the focal plane(including the CCD plane deviated due to camera focal length changed) under the condition of space environment and vibration impact when satellite is launching image resolution ratio will be descended because defocusing. For tridimensional mapping camera principal point position and focal length variation of the camera affect positioning accuracy of ground target conventional solution is under the condition of vacuum and focusing range calibrate the position of CCD plane with code of photoelectric encoder when the camera defocusing in orbit the magnitude and direction of defocusing amount are obtained by photoelectric encoder then the focusing mechanism driven by step motor to compensate defocusing amount of the CCD plane. For tridimensional mapping camera under the condition of space environment and vibration impact when satellite is launching if the camera focal length changes above focusing method has been meaningless. Thus the measuring and focusing method was put forward based on astigmation a quadrant detector was adopted to measure the astigmation caused by the deviation of the CCD plane refer to calibrated relation between the CCD plane poison and the asrigmation the deviation vector of the CCD plane can be obtained. This method includes all factors caused deviation of the CCD plane experimental results show that the focusing resolution of mapping camera focusing mechanism based on astigmatic method can reach 0.25 m. 2010 Copyright SPIE - The International Society for Optical Engineering.
	Semiconductor charged particle detector and its application in space physical science 期刊论文 OAI收割 HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2003, 卷号: 27, 期号: 2, 页码: 150-153 作者: Tan, JL; Gao, P; Shen, SZ; Liang, JB; Bao, ZQ \| 收藏 \| 浏览/下载：16/0 \| 提交时间：2010/10/29 charged particle detector space physical science application space radiation environment solar proton event