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Characterization of silicon microstrip sensors for space astronomy

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Nuclear Science and Techniques 2020年第10期31卷 13-22页

作者： Jia-Ju Wei Jian-Hua Guo Yi-Ming Hu Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China Key Laboratory of Dark Matter and space astronomy Chinese Academy of SciencesNanjing 210023China

Silicon microstrip detectors are widely used in experiments for space astronomy.Before the detector is assembled,extensive characterization of the silicon microstrip sensors is indispensable and challenging.This work electrically evaluates a series of sensor parameters,including the depletion voltage,bias resistance,metal strip resistance,total leakage current,strip leakage current,coupling capacitance,and interstrip capacitance.Two methods are used to accurately measure the strip leakage current,and the test results match each other well.In measuring the coupling capacitance,we extract the correct value based on a SPICE model and two-port network analysis.In addition,the expression of the measured bias resistance is deduced based on the SPICE model.

关键词： Silicon microstrip sensor space astronomy Characterization SPICE model

China’s space astronomy and Solar Physics in 2011—2012

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空间科学学报 2012年第5期32卷 605-617页

作者： ZHANG Shuangnan YAN Yihua GAN Weiqun Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008

In the first part of this paper,we describe briefly the mid and long-term plan of Chinese space astronomy,its preliminary study program,the current status of satellite missions undertaken, and the current status of astronomy experiments in China's manned space flight program.In the second part,the recent research progress made in the fields of solar physics is summarized briefly, including solar vector magnetic field,solar flares,CME and filaments,solar radio and nonthermal processes,EUV waves,MHD waves and coronal waves,solar model and helioseismology,solar wind and behavior of solar cycle.

关键词： space astronomy Solar physics

space Solar Physics in China:2020-2022

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空间科学学报 2022年第4期42卷 608-611页

作者： GAN Weiqun FAN Quanlin Key Laboratory of Dark Matter and space astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023 National space Science Center Chinese Academy of SciencesBeijing 100090

To follow up the last report two years ago,what happened from 2020 to 2022 deserves specially mentioning:CHASE was successfully launched on 14 October 2021;ASO-S will finish soon its Phase-D study and is scheduled for launch in October 2022;four solar mission candidates are being undertaken the engineering project evaluations;three solar mission proposals are being undertaken the background project evaluations;there are also quite a number of pre-study space solar physics projects getting either newly supported or finished.This paper describes in brief the status of all these related projects.

关键词： space astronomy Solar physics mission

Progress Report on ASO-S

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空间科学学报 2022年第4期42卷 565-567页

作者： GAN Weiqun Key Laboratory of Dark Matter and space astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023

The Advanced space-based Solar Observatory(ASO-S)started officially its engineering phases at the beginning of 2018.In the past two years from 2020 to 2022 ASO-S completed smoothly the Phase-C study and is now undertaking the Phase-D study.The launch date is finally set in October of 2022.We here briefly summarize the progress of ASO-S from the late Phase-C to the current Phase-D studies,and plan the scientific affairs around the launch.

关键词： space astronomy Solar physics spacecraft

Status of the Advanced space-based Solar Observatory

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空间科学学报 2020年第5期40卷 704-706页

作者： GAN Weiqun Key Laboratory of Dark Matter and space astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210033

The Advanced space-based Solar Observatory(ASO-S)was formally approved at the end of 2017.In the past two years,ASO-S underwent its official Phase-B and Phase-C studies.The Phase-B study was successfully accomplished by the end of April 2019,and the Phase-C study is being now undertaken until August 2020.Then the flight model is planned to finish within 16 months.Around the end of 2021,ASO-S will be ready in the launch state.We briefly summarize the history of ASO-S,the phase-B studies,and the phase-C studies.

关键词： space astronomy Solar physics spacecraft

Progress on SVOM Satellite Development

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空间科学学报 2020年第5期40卷 698-699页

作者： WEI Jianyan National Astronomical Observatories Chinese Academy of SciencesBeijing 100101

SVOM(space-based multiband astronomical Variable Objects Monitor)is a Chinese-French space mission dedicated to studying Gamma-Ray Bursts.The satellite has four instruments to detect and localize the prompt GRB emission and measure the evolution of the afterglow in the visible band and in X-rays,and a VHF communication system enabling the fast transmission of SVOM alerts to the ground.The ground segment includes an array of wide-angle cameras and two follow-up telescopes.It was planned to be in orbit in 2021,and now has to be delayed about six months because of COVID-19 epidemic.

关键词： space astronomy Gamma-ray burst