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Status of the Hard X-ray Modulation Telescope(Insight-HXMT) Project

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空间科学学报 2018年第5期38卷 623-626页

作者： lu fangjun ZHANG Shuangnan Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049

The Hard X-ray Modulation Telescope(HXMT) was launched at Jiuquan Satellite Launch Center on June 15, 2017, and was named as Insight-HXMT after the launch. Now all the instruments work properly in space, dozens of sources have been observed, and some early scientific results have been published. The nominal lifetime of Insight-HXMT is 4 years.

关键词：检查调整望远镜卫星发射中心工程

In-orbit performance evolution of Insight-HXMT in the first five years

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Radiation Detection Technology and Methods 2023年第1期7卷 1-2页

作者： fangjun lu Institute of High Energy Physics&Bureau of Frontier Science and Education Chinese Academy of SciencesBeijingChina

The Hard X-ray Modulation Telescope,dubbed Insight-HXMT after it was launched into orbit on June 15th,2017,is the first X-ray astronomical satellite in *** contains 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).The main scientific objective of Insight-HXMT is to study neutron star and black holeX-ray binaries in the Galaxy by observing their temporal and spectral properties in 1–250 *** telescopes usually have relatively high backgrounds that are comparable to the source *** is no active temperature control for theME and LE detectors,whose working temperatures and response functions change significantly in ***,a good calibration of the background and energy response matrices is essential for obtaining reliable observational results.

关键词： space matrices performance

Hard X-Ray Modulation Telescope(HXMT) Mission

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空间科学学报 2006年第Z1期26卷 30-41页

作者： LI Tipei ZHANG Shuangnan lu fangjun Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China Department of Engineering Physics Tsinghua University Department of Physics Tsinghua University Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China

The HXMT mission concept consists of a slat-collimated hard X-ray detector assembly sensitive in 20～250 keV with a collection area of about 5000 cm2. Based on the reconstruction technique by direct demodulation developed in recent years, HXMT is mainly devoted to performing a hard X-ray all-sky imaging survey with both high sensitivity and high spatial resolution. It can also be used to make pointed observations of X-ray sources to study their spectroscopic and temporal properties in details. The main detector of HXMT consists of 18 individual cylindrical NaI(T1)/CsI(Na) phoswich modules, each with anarea of 283.5 cm2 and a field of view of 5.7°× 1.1° (FWHM). Its spatial resolution and position accuracy are 5′ and 1′ by using the direct demodulation in 1994, and in 2000 its feasibility and technical demonstration study was selected as a project under the Major State Basic Research Program of China. In October 2005, this project entered the full design phase and was listed as a candidate for the first dedicated astronomy satellite around 2010. We are now also considering secondary low energy instruments for this satellite.

关键词： Space Astronomy, Hard X-ray, Satellite

X-Ray Fine Structure of a Limb Solar Flare Revealed by Insight-HXMT,RHESSI and Fermi

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Research in Astronomy and Astrophysics 2022年第5期22卷 47-55页

作者： Ping Zhang Wei Wang Yang Su Shuangnan Zhang Liming Song fangjun lu Shu Zhang Department of Physics and Technology Wuhan UniversityWuhan 430072China WHU-NAOC Joint Center for Astronomy Wuhan UniversityWuhan 430072China Purple Mountain Observatory of the Chinese Academy of Sciences Nanjing 210023China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China

We conduct a detailed analysis of an M1.3 limb flare occurring on 2017 July 3,which have the X-ray observations recorded by multiple hard X-ray telescopes,including Hard X-ray Modulation Telescope(Insight-HXMT),Ramaty High Energy Solar Spectroscopic Imager(RHESSI),and the Fermi Gamma-ray Space Telescope(Fermi).Joint analysis has also used the extreme ultraviolet(EUV)imaging data from the Atmospheric Imaging Assembly(AIA)aboard the Solar Dynamic *** hard X-ray spectral and imaging evolution suggest a lower corona source,and the non-thermal broken power law distribution has a rather low break energy~15 *** EUV imaging shows a rather stable plasma configuration before the hard X-ray peak phase,and accompanied by a filament eruption during the hard X-ray flare peak *** X-ray image reconstruction from RHESSI data only shows one foot point *** also determined the DEM for the peak phase by SDO/AIA *** integrated EM beyond 10 MK at foot point onset after the peak phase,while the>10 MK source around reconnection site began to *** evolution of EM and hard X-ray source supports lower corona plasma heating after non-thermal energy *** combination of hard X-ray spectra and images during the limb flare provides the understanding on the interchange of non-thermal and thermal energies,and relation between lower corona heating and the upper corona instability.

关键词： Sun flares-Sun corona-Sun X-rays-gamma-rays-plasmas-radiation mechanisms non-thermal-radiation mechanisms thermal

Review of X-ray pulsar spacecraft autonomous navigation

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Chinese Journal of Aeronautics 2023年第10期36卷 44-63页

作者： Yidi WANG Wei ZHENG Shuangnan ZHANG Minyu GE Liansheng LI Kun JIANG Xiaoqian CHEN Xiang ZHANG Shijie ZHENG fangjun lu College of Aerospace Science and Engineering National University of Defense TechnologyChangsha 410073China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Beijing Institute of Control Engineering Beijing 100080China Beijing Institute of Tracking and Communication Technology Beijing 100091China Aerospace Information Research Institute Chinese Academy of ScienceBeijing 100091China Academy of Military Science Beijing 100091China National Innovation Institute of Defense Technology Academy of Military ScienceBeijing 100091China

This article provides a review on X-ray pulsar-based navigation(XNAV).The review starts with the basic concept of XNAV,and briefly introduces the past,present and future projects concerning *** paper focuses on the advances of the key techniques supporting XNAV,including the navigation pulsar database,the X-ray detection system,and the pulse time of arrival ***,the methods to improve the estimation performance of XNAV are ***,some remarks on the future development of XNAV are provided.

关键词： Estimation of pulse time of arrival Spacecraft autonomous navigation X-ray detection X-ray pulsar-based navigation X-ray pulsar signal processing

Hard X-ray Modulation Telescope

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Bulletin of the Chinese Academy of Sciences 2011年第3期25卷 235-236页

作者： lu fangjun a main technical principal of the HXMT project 不详

The Hard X-ray Modulation Telescope （HXMT） will be China＇s first astronomical satellite. On board HXMT there are three kinds of slat-collimated telescopes, the High Energy X-ray Telescope （HE, 20-250 keV, 5000 cm^2）, the Medium Energy X-ray Telescope （ME, 5-30 keV, 952 cm^2）, and the Low Energy X-ray Telescope （LE, 1-15 keV, 384 cm^2）.

关键词：硬X射线调制望远镜 X射线望远镜准直望远镜天文卫星 HXMT 等能量低能量板式

Introduction to the detection technology of Ali CMB polarization telescope

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Radiation Detection Technology and Methods 2017年第2期1卷 21-30页

作者： He Gao Congzhan Liu Zhangwei Li Yang Liu Yongping Li Siyu Li Hong Li Guanhua Gao fangjun lu Xinmin Zhang Institute of High Energy Physics Chinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina

Background Ali CMB polarization telescope(AliCPT)project is a well-timed and well-planned ground-based CMB project in Ali(Nagri)area of Tibet,*** has been approved at the end of *** To give an introduction to the detection technology of *** The whole receiver of AliCPT is introduced and discussed,including the optics,the cryostat,the preliminary design of focal plane TES bolometers,multiplexing SQUID readout,and so *** The raw sensitivity ofr will reach below 0.001 by 10-year observation as AliCPT project being carried out and upgraded.

关键词： Microwave polarization detection Transition-edge sensor Multiplexing SQUID readout

Uniaxial stress effect on quasi-one-dimensional Kondo lattice CeCo_(2)Ga_(8)

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Chinese Physics B 2022年第6期31卷 104-108页

作者： Kangqiao Cheng Binjie Zhou Cuixiang Wang Shuo Zou Yupeng Pan Xiaobo He Jian Zhang fangjun lu Le Wang Youguo Shi Yongkang luo Wuhan National High Magnetic Field Center and School of Physics Huazhong University of Science and TechnologyWuhan 430074China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Shenzhen Institute for Quantum Science and Engineering and Department of PhysicsSouthern University of Science and TechnologyShenzhen 518055China

Quantum critical phenomena in the quasi-one-dimensional limit remain an open *** report the uniaxial stress effect on the quasi-one-dimensional Kondo lattice CeCo_(2)Ga_(8) by electric transport and AC heat capacity ***_(2)Ga_(8) is speculated to sit in close vicinity but on the quantum-disordered side of a quantum critical *** compressing the c axis,parallel to the Ce-Ce chain,the onset of coherent Kondo effect is *** contrast,the electronic specific heat diverges more rapidly at low temperature when the intra-chain distance is elongated by compressions along a or b *** results suggest that a tensile intra-chain strain(ε_(c)>0)pushes CeCo_(2)Ga_(8) closer to the quantum critical point,while a compressive intra-chain strain(ε_(c)<0)likely causes *** work provides a rare paradigm of manipulation near a quantum critical point in a quasi-1D Kondo lattice by uniaxial stress,and paves the way for further investigations on the unique feature of quantum criticality in the quasi-1D limit.

关键词： heavy-fermion compounds Kondo effect RKKY interaction quantum critical point

Simulation of the in-flight calibration of the collimator alignment and PSF for HXMT

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Science China(Physics,Mechanics & Astronomy) 2010年第S1期53卷 47-50页

作者： XIONG ShaoLin,LI XinQiao,QU Jinlu & lu fangjun Key Laboratory for Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences(CAS),Beijing 100049,China Key Laboratory for Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences (CAS) Beijing China

The Hard X-ray Modulation Telescope(HXMT) is an X-ray astronomical satellite in 1-250 keV,consisting of three collimated *** present the in-flight calibration approach of the collimator alignment and Point Spread Function(PSF) for HXMT,using both the direct fitting method and the imaging *** to observational simulations of the Crab Nebula,we find that these two methods produce almost the same calibration accuracy of the alignment,and with a one-day scanning observation,the alignment can be calibrated to better than 0.45' and 0.1' along the wide and narrow directions of the Field of View(FOV) for a detector module,which corresponds to a localization accuracy of better than 0.1' and meets the scientific requirement.

关键词： HXMT alignment PSF calibration