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International Journal of Minerals,Metallurgy and Materials 2011年第1期18卷 48-52页

作者： zhi-jun jia cui-wei du cheng-tao li zou yi xiao-gang li School of Materials Science and Technology University of science and Technology Beijing Beijing 100083 China

Pitting corrosion of 316L stainless steel in NaCl solution was investigated by means of staircase potential electrochemical impedance spectroscopy（SPEIS）.The investigation focused on the transition of stainless steel from the passive state to pitting *** on the evolution of electrical parameters of the equivalent electrical circuit,it is suggested that the most probable mechanism of pit creation is the film breaking *** result demonstrates that staircase potential electrochemical impedance spectroscopy is an effective method for the investigation of pitting corrosion.

关键词： stainless steel passivation film steel corrosion pitting electrochemical impedance spectroscopy

In-beam gamma rays of CSNS Back-n characterized by black resonance filter

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Nuclear Science and Techniques 2024年第10期35卷 149-160页

作者： Jin-cheng Wang Jie Ren wei jiang Xi-Chao Ruan ying-yi liu Hao-Lan Yang Kuo-zhi Xu Xin-yi Pan Qi Sun Jie Bao Han-Xiong Huang Hao-Fan Bai jiang-Bo Bai Ping Cao Qi-Ping Chen Yong-Hao Chen Wen-Hao duan An-Chuan Fan Rui-Rui Fan Chang-Qing Feng Min-Hao Gu Chang-Cai Han Zi-Jie Han Guo-Zhu He Yong-cheng He Yang Hong yi-wei Hu zhi-Jie jiang ling Kang Chang-lin Lan Bo li Feng li Qiang li xiao li Yang li Jie liu Rong liu Shu-Bin liu yi-Na liu Guang-Yuan Luan Chang-jun Ning yi-jia Qiu Wen-Kai Ren zhi-Zhou Ren Zhao-Hui Song Kang Sun zhi-Xin Tan Jing-Yu Tang Sheng-Da Tang li-jiao Wang Peng-cheng Wang Zhao-Hui Wang Zhong-wei Wen xiao-Guang Wu Xuan Wu Ze-Peng Wu Cong Xia li-Kun Xie Han yi tao Yu Yong-Ji Yu Guo-Hui Zhang Hang-Chang Zhang Qi-wei Zhang Xian-Peng Zhang Yu-liang Zhang zhi-Yong Zhang Mao-Yuan Zhao zhi-Hao Zhou Ke-jun Zhu Chong zou Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Modern Physics Fudan UniversityShanghai 200433China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China USTC Archaeometry Lab University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Institute of Advanced Technology University of Science and Technology of ChinaHefei 230027China

The back-streaming white-neutron beamline(Back-n)of the China Spallation Neutron Source is an essential neutronresearch platform built for the study of nuclear data,neutron physics,and neutron *** types of cross-sectional neutron-reaction measurements have been performed at Back-n since early *** measurements have shown that a significant number of gamma rays can be transmitted to the experimental stations of Back-n along with the neutron *** gamma rays,commonly referred to as in-beam gamma rays,can induce a non-negligible experimental background in neutron-reaction *** the characteristics of in-beam gamma rays is important for understanding the experimental ***,measuring in-beam gamma rays is challenging because most gamma-ray detectors are sensitive to neutrons;thus,discriminating between neutron-induced signals and those from in-beam gamma rays is *** this study,we propose the use of the black resonance filter method and a CeBr_(3) scintillation detector to measure the characteristics of the in-beam gamma rays of *** types of black resonance filters,^(181)Ta,^(59)Co,^(nat)Ag,and^(nat)Cd,were used in this *** time-of-flight(TOF)technique was used to select the detector signals remaining in the absorption region of the TOF spectra,which were mainly induced by in-beam gamma *** energy distribution and flux of the in-beam gamma rays of Back-n were determined by analyzing the deposited energy spectra of the CeBr_(3) scintillation detector and using Monte Carlo *** on the results of this study,the background contributions from in-beam gamma rays in neutron-reaction measurements at Back-n can be reasonably evaluated,which is beneficial for enhancing both the experimental methodology and data analysis.

关键词： In-beam gamma rays Back-n CeBr_(3)scintillator Black filter resonance technique

Timing analysis of the black hole candidate EXO 1846–031 with Insight-HXMT monitoring

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Research in Astronomy and Astrophysics 2021年第3期21卷 193-204页

作者： He-Xin liu Yue Huang Guang-cheng xiao Qing-cui Bu Jin-Lu Qu Shu Zhang Shuang-Nan Zhang Shu-Mei jia Fang-jun Lu Xiang Ma lian tao wei Zhang li Chen li-Ming Song Ti-Pei li Yu-Peng Xu Xue-Lei Cao Yong Chen Cong-Zhan liu Ce Cai zhi Chang gang Chen Tian-Xiang Chen yi-Bao Chen Yu-Peng Chen wei cui wei-wei cui Jing-Kang Deng Yong-wei Dong Yuan-Yuan du Min-Xue Fu Guan-Hua Gao He Gao Min Gao Ming-Yu Ge Yu-Dong Gu Ju Guan cheng-cheng Guo Da-wei Han jia Huo Lu-Hua jiang wei-Chun jiang Jing Jin Yong-Jie Jin ling-Da Kong Bing li cheng-Kui li gang li Mao-Shun li wei li Xian li xiao-Bo li Xu-Fang li Yang-Guo li Zheng-wei li xiao-Hua liang Jing-Yuan liao Bai-Sheng liu Guo-Qing liu Hong-wei liu xiao-Jing liu yi-Nong liu Bo Lu Xue-Feng Lu Qi Luo tao Luo Bin Meng yi Nang jian-yin Nie Ge Ou Na Sai Ren-cheng Shang Xin-ying Song liang Sun ying Tan You-li Tuo Chen Wang Guo-Feng Wang Juan Wang ling-jun Wang Weng-Shuai Wang Yu-Sa Wang Xiang-Yang Wen Bai-Yang Wu Bo-Bing Wu Mei Wu Shuo xiao Shao-lin Xiong He Xu jia-wei Yang Sheng Yang Yan-Ji Yang yi-jung Yang Qi-Bin yi Qian-Qing yin Yuan You Ai-Mei Zhang cheng-Mo Zhang Fan Zhang Hong-Mei Zhang Juan Zhang Tong Zhang Wan-Chang Zhang Wen-Zhao Zhang yi Zhang yi-Fei Zhang Yong-Jie Zhang Yuan-Hang Zhang Yue Zhang Zhao Zhang zhi Zhang Zi-liang Zhang Hai-Sheng Zhao xiao-Fan Zhao Shi-Jie Zheng Yao-Guang Zheng Deng-Ke Zhou jian-Feng Zhou Yu-Xuan Zhu Ren-lin Zhuang Yue Zhu 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 Institut fur Astronomie und Astrophysik Kepler Center for Astro and Particle PhysicsEberhard Karls Universität72076 TubingenGermany Department of Astronomy Beijing Normal UniversityBeijing 100088China Department of Astronomy Tsinghua UniversityBeijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China Department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China College of Physics Sciences&Technology Hebei UniversityBaoding 071002Hebei ProvinceChina

We present the observational results from a detailed timing analysis of the black hole candidate EXO 1846-031 during its outburst in 2019 with the observations of Insight-HXMT,NICER and *** outburst can be classified roughly into four different ***-C quasi-periodic oscillations(QPOs)observed by NICER(about 0.1-6 Hz)and Insight-HXMT(about 0.7-8 Hz)are also reported in this ***,we study various physical quantities related to QPO *** QPO rms-frequency relationship in the energy band 1-10 keV indicates that there is a turning pointing in frequency around2 Hz,which is similar to that of GRS 1915+105.A possible hypothesis for the relationship above may be related to the inclination of the source,which may require a high inclination to explain *** relationships between QPO frequency and QPO rms,hardness,total fractional rms and count rate have also been found in other transient sources,which can indicate that the origin of type-C QPOs is non-thermal.

关键词： X-ray binaries black hole candidate QPO EXO 1846–031

The In-Flight Realtime Trigger and Localization Software of GECAM

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Research in Astronomy and Astrophysics 2024年第10期24卷 11-24页

作者： xiao-Yun Zhao Shao-lin Xiong Xiang-Yang Wen Xin-Qiao li Ce Cai Shuo xiao Qi Luo Wen-Xi Peng Dong-Ya Guo Zheng-Hua An Ke Gong Jin-Yuan liao Yan-Qiu Zhang Yue Huang Lu li Xing Wen Fei Zhang Jing duan Chen-wei Wang Dong-li Shi Peng Zhang Qi-Bin yi Chao-Yang li Yan-Bing Xu xiao-Hua liang Ya-Qing liu Da-li Zhang Xi-Lei Sun Fan Zhang gang Chen Huan-Yu Wang Sheng Yang xiao-Jing liu Min Gao Mao-Shun li Jin-Zhou Wang Xing Zhou yi Zhao Wang-Chen Xue Chao Zheng jia-Cong liu Xing-Bo Han Jin-ling Qi jia Huang Ke-Ke Zhang Can Chen Xiong-tao Yang Dong-Jie Hou Yu-Sa Wang Rui Qiao Xiang Ma xiao-Bo li Ping Wang Xin-ying Song li-Ming Song Shi-Jie Zheng Bing li Hong-Mei Zhang Yue Zhu wei Chen jian-jian He Zhen Zhang Jin Hou Hong-jun Wang Yan-Chao Hao Xiang-Yu Wang Zong-Yuan Yang zhi-Long Wen zhi Chang Yuan-Yuan du Rui Gao xiao-Fei Lan Yan-Guo li gang li Xu-Fang li Fang-jun Lu Hong Lu Bin Meng Feng Shi Hui Wang Hui-Zhen Wang Yu-Peng Xu jia-wei Yang Xue-Juan Yang Shuang-Nan Zhang Chao-Yue Zhang cheng-Mo Zhang zhi-cheng Tang cheng cheng 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 School of Information Science and Technology Southwest Jiaotong UniversityChengdu 611756China Key Laboratory of Stellar and Interstellar Physics and Department of Physics Xiangtan UniversityXiangtan 411105China Physics and Space Science College China West Normal UniversityNanchong 637002China Department of Astronomy Beijing Normal UniversityBeijing 100875China Innovation Academy for Microsatellites of CAS Shanghai 201203China Changchun University of Science and Technology Changchun 130022China Chinese Academy of Sciences South America Center for Astronomy National Astronomical ObservatoriesCASBeijing 100101China

Realtime trigger and localization of bursts are the key functions of GECAM,an all-sky gamma-ray monitor launched on 2020 December *** developed a multifunctional trigger and localization software operating in the CPU of the GECAM Electronic *** onboard software has the following features:high trigger efficiency for real celestial bursts with a suppression of false triggers caused by charged particle bursts and background fluctuation,dedicated localization algorithm optimized for both short and long bursts,and low time latency of the trigger information which is downlinked through the Global Short Message Communication service of the global BeiDou navigation *** paper provides a detailed description of the design and development of the trigger and localization software system for *** covers the general design,workflow,the main functions,and the algorithms used in the *** paper also includes on-ground trigger tests using simulated gamma-ray bursts generated by a dedicated X-ray tube,as well as an overview of the performance for real celestial bursts during its in-orbit operation.

关键词： telescopes instrumentation:detectors methods:observational

Advances in nuclear detection and readout techniques

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Nuclear Science and Techniques 2023年第12期34卷 281-358页

作者： Rui He xiao‑Yang Niu yi Wang Hong‑wei liang Hong‑Bang liu Ye Tian Hong‑lin Zhang Chao‑Jie zou zhi‑yi liu Yun‑Long Zhang Hai‑Bo Yang Ju Huang Hong‑Kai Wang wei‑jia Han Bei Cao gang Chen Cong Dai li‑Min duan Rui‑Rui Fan Fang‑Fa Fu jian‑Hua Guo Dong Han wei jiang Xian‑Qin li Xin li Zhuo‑Dai li Yu‑Tie liang Shun liao De‑Xu lin cheng‑Ming liu Guo‑Rui liu jun‑tao liu Ze Long Meng‑Chen Niu Hao Qiu Hu Ran Xiang‑Ming Sun Bo‑Tan Wang jia Wang Jin‑Xiang Wang Qi‑lin Wang Yong‑Sheng Wang xiao‑Chuan Xia Hao‑Qing Xie He‑Run Yang Hong yin Hong Yuan Chun‑Hui Zhang Rui‑Guang Zhao Ran Zheng cheng‑Xin Zhao Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000China Key Laboratory of Particle and Radiation Imaging Department of Engineering PhysicsTsinghua UniversityBeijing 100084China School of Integrated Circuits Dalian University of TechnologyDalian 116020China Guangxi Key Laboratory for Relativistic Astrophysics School of Physical Science and TechnologyGuangxi UniversityNanning 530004China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Radiation Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Electronic Engineering School Heilongjiang UniversityHarbin 150080China Spallation Neutron Source Science Center Dongguan 523803China Micro‑electronic Department Harbin Institute of TechnologyHarbin 150001China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210034China liaoning Academy of Materials Shenyang 110167China Istituto Nazionale di Fisica Nucleare Sezione di PerugiaPerugiaItaly School of Mathematics and Physics Chengdu University of TechnologyChengdu 620035China PLAC Key Laboratory of Quark and Lepton Physics(MOE)Central China Normal UniversityWuhan 430079China School of Electronics and Information Northwestern Polytechnical UniversityXi’an 710129China State Key Lab of Superhard Materials College of PhysicsJilin UniversityChangchun 130012China School of Computer Science Northwestern Polytechnical UniversityXi’an 710129China

“A Craftsman Must Sharpen His Tools to Do His Job,”said *** detection and readout techniques are the foundation of particle physics,nuclear physics,and particle astrophysics to reveal the nature of the ***,they are being increasingly used in other disciplines like nuclear power generation,life sciences,environmental sciences,medical sciences,*** article reviews the short history,recent development,and trend of nuclear detection and readout techniques,covering Semiconductor Detector,Gaseous Detector,Scintillation Detector,Cherenkov Detector,Transition Radiation Detector,and Readout *** explaining the principle and using examples,we hope to help the interested reader underst and this research field and bring exciting information to the community.

关键词： Silicon detector Wide bandgap detector Time projection chamber(TPC) Multigap resistive plate chamber detector(MRPC) Scintillation detector Calorimeters Cherenkov detector Transition radiation detector Artificial intelligence Trigger-less readout

Insight-HXMT observations of the first binary neutron star merger GW170817

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Science China(Physics,Mechanics & Astronomy) 2018年第3期61卷 26-33页

作者： TiPei li Shaolin Xiong ShuangNan Zhang Fangjun Lu liMing Song XueLei Cao zhi Chang gang Chen li Chen TianXiang Chen Yong Chen yiBao Chen YuPeng Chen wei cui weiwei cui JingKang Deng Yongwei Dong YuanYuan du MinXue Fu GuanHua Gao He Gao Min Gao MingYu Ge YuDong Gu Ju Guan chengcheng Guo Dawei Han wei Hu Yue Huang jia Huo ShuMei jia LuHua jiang weiChun jiang Jing Jin YongJie Jin Bing li chengKui li gang li MaoShun li wei li Xian li xiaoBo li XuFang li YanGuo li Zijian li Zhengwei li xiaoHua liang JinYuan liao CongZhan liu GuoQing liu Hongwei liu ShaoZhen liu xiaoJing liu Yuan liu yiNong liu Bo Lu XueFeng Lu tao Luo Xiang Ma Bin Meng yi Nang jianyin Nie Ge OU JinLu Qu Na Sai liang Sun yin Tan lian tao WenHui tao Youli Tuo GuoFeng Wang HuanYu Wang Juan Wang WenShuai Wang YuSa Wang XiangYang Wen BoBing WU Mei Wu Guangcheng xiao He Xu YuPeng Xu linli Yan jiawei Yang Sheng Yang YanJi Yang AiMei Zhang ChunLei Zhang chengMo Zhang Fan Zhang HongMei Zhang Juan Zhang Qiang Zhang Shu Zhang Tong Zhang wei Zhang WanChang Zhang WenZhao Zhang yi Zhang Yue Zhang yiFei Zhang YongJie Zhang Zhao Zhang Ziliang Zhang HaiSheng Zhao jianling Zhao xiaoFan Zhao ShiJie Zheng Yue Zhu YuXuan Zhu Changlin zou Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China Department of Physics Tsinghua University Beijing 100084 China University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100049 China Department of Astronomy Beijing Normal University Beijing 100088 China Department of Engineering Physics Tsinghua University Beijing 100084 China

Finding the electromagnetic （EM） counterpart of binary compact star merger, especially the binary neutron star （BNS） merger, is critically important for gravitational wave （GW） astronomy, cosmology and fundamental physics. On Aug. 17, 2017, Advanced liGO and Fermi/GBM independently triggered the first BNS merger, GW170817, and its high energy EM counterpart, GRB 170817A, respectively, resulting in a global observation campaign covering gamma-ray, X-ray, UV, optical, IR, radio as well as neutrinos. The High Energy X-ray telescope （HE） onboard Insight-HXMT （Hard X-ray Modulation Telescope） is the unique high-energy gamma-ray telescope that monitored the entire GW localization area and especially the optical counterpart （SSS17a/AT2017gfo） with very large collection area （M000 cm2） and microsecond time resolution in 0.2-5 MeV. In addition, Insight-HXMT quickly implemented a Target of Opportunity （TOO） observation to scan the GW localization area for potential X-ray emission from the GW source. Although Insight-HXMT did not detect any significant high energy （0.2-5 MeV） radiation from GW170817, its observation helped to confirm the unexpected weak and soft nature of GRB 170817A. Meanwhile, Insight-HXMT/HE provides one of the most stringent constraints （-10-7 to 104 erg/cm2/s） for both GRB170817A and any other possible precursor or extended emissions in 0.2-5 MeV, which help us to better understand the properties of EM radiation from this BNS merger. Therefore the observation of Insight-HXMT constitutes an important chapter in the full context of multi-wavelength and multi-messenger observation of this historical GW event.

关键词： GW170817 BNS merger gravitational wave electromagnetic counterpart

An all-round Al-Chemist with a scientific mind

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National Science Review 2022年第10期9卷 158-168页

作者： Qing Zhu Fei Zhang Yan Huang Hengyu xiao Lu Yuan Zhao Xu Chun Zhang tao Song Xin Sheng Tang Xiang li Guo He Bao Chen Chong jun yi Zhou yi Han Zhang Baicheng Zhang jia Qi Cao Man Luo Song Wang Gui lin Ye Wan jun Zhang Xin Chen Shuang Cong Donglai Zhou Huirong li jialei li gang zou wei wei Shang jun jiang yi Luo Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science University of Science and Technology of China School of Information Science and Technology University of Science and Technology of China Hefei Ji Shu Quantum Technology Co.Ltd Hefei National Laboratory University of Science and Technology of China

The realization of automated chemical experiments by robots unveiled the prelude to an artificial intelligence(AI) *** AI-based systems or robots with specific chemical skills have been demonstrated,but conducting all-round scientific research remains ***,we present an all-round AI-Chemist e quipped with scientific data intelligence that is capable of performing basic tasks generally re quired in chemical *** on a service platform,the AI-Chemist is able to automatically read the literatures from a cloud database and propose experimental plans *** can control a mobile robot in-house or online to automatically execute the complete experimental process on 14workstations,including synthesis,characterization and performance *** experimental data can be simultaneously analysed by the computational brain of the AI-Chemist through machine learning and Bayesian optimization,allowing a new hypothesis for the next iteration to be *** competence of the AI-Chemist has been scrutinized by three different chemical *** the future,the more advanced all-round AI-Chemists equipped with scientific data intelligence may cause changes to the landscape of the chemical laboratory.

关键词： AI-Chemist computational brain mobile robot machine reading all-round research

The first data release(DR1) of the LAMOST regular survey

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Research in Astronomy and Astrophysics 2015年第8期15卷 1095-1124页

作者： A-li Luo Yong-Heng Zhao gang Zhao li-Cai Deng xiao-wei liu yi-Peng Jing gang Wang Hao-Tong Zhang jian-Rong Shi Xiang-Qun cui Yao-Quan Chu Guo-Ping li Zhong-Rui Bai Yue Wu Yan Cai Shu-Yun Cao Zi-Huang Cao Jeffrey L.Carlin Hai-Yuan Chen jian-jun Chen Kun-Xin Chen li Chen Xue-Lei Chen xiao-Yan Chen ying Chen Norbert Christlieb jia-Ru Chu Chen-Zhou cui yi-Qiao Dong Bing du Dong-wei Fan Lei Feng jian-Ning Fu Peng Gao Xue-Fei Gong Bo-Zhong Gu Yan-Xin Guo Zhan-Wen Han Bo-liang He Jin-liang Hou Yong-Hui Hou Wen Hou Hong-Zhuan Hu Ning-Sheng Hu Zhong-Wen Hu zhi-ying Huo Lei jia Fang-Hua jiang Xiang jiang zhi-Bo jiang Ge Jin xiao Kong Xu Kong Ya-Juan Lei Ai-Hua li Chang-Hua li Guang-wei li Hai-Ning li jian li Qi li Shuang li Sha-Sha li Xin-Nan li Yan li yin-Bi li Ye-Ping li Yuan liang Chien-cheng lin Chao liu Gen-Rong liu Guan-Qun liu zhi-gang liu Wen-zhi Lu Yu Luo yin-dun Mao Heidi Newberg Ji-jun Ni Zhao-Xiang Qi Yong-jun Qi Shi-yin Shen Huo-Ming Shi Jing Song yi-Han Song Ding-Qiang Su Hong-jun Su Zheng-Hong Tang Qing-Sheng tao Yuan Tian Dan Wang Da-Qi Wang Feng-Fei Wang Guo-Min Wang Hai Wang Hong-Chi Wang jian Wang jia-Ning Wang jian-ling Wang jian-Ping Wang jun-Xian Wang Lei Wang Meng-Xin Wang Shou-Guan Wang Shu-Qing Wang Xia Wang Ya-Nan Wang You Wang Yue-Fei Wang You-Fen Wang Peng wei Ming-zhi wei Hong Wu Ke-Fei Wu Xue-Bing Wu Yu-Zhong Wu xiao-Zheng Xing ling-Zhe Xu Xin-Qi Xu Yan Xu Tai-Sheng Yan De-Hua Yang Hai-Feng Yang Hui-Qin Yang Ming Yang Zheng-Qiu Yao Yong Yu Hui Yuan Hai-Bo Yuan Hai-Long Yuan wei-Min Yuan Chao Zhai En-Peng Zhang Hua-wei Zhang jian-Nan Zhang li-Pin Zhang wei Zhang Yong Zhang Yan-Xia Zhang Zheng-Chao Zhang Ming Zhao Fang Zhou Xu Zhou Jie Zhu Yong-Tian Zhu Si-cheng zou Fang Zuo National Astronomical Observatories Chinese Academy of Sciences Department of Astronomy Peking University Shanghai Astronomical Observatory Chinese Academy of Sciences Nanjing Institute of Astronomical Optics & Technology National Astronomical ObservatoriesChinese Academy of Sciences University of Science and Technology of China Department of Physics Applied Physics and AstronomyRensselaer Polytechnic InstituteTroyNY 12180USA Department of Physics and Astronomy Earlham CollegeRichmondIN 47374USA Universitt Heidelberg Zentrum für AstronomieLandessternwarteKnigstuhl 1269117 HeidelbergGermany Department of Astronomy Beijing Normal University Yunnan Observatories Chinese Academy of Sciences Purple Mountain Observatory Chinese Academy of Sciences

The Large sky Area Multi-Object Fiber Spectroscopic Telescope（LAMOST） general survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and collect 10 million spectra of stars, galaxies and QSOs. Objects in both the pilot survey and the first year regular survey are included in the LAMOST DR1. The pilot survey started in October 2011 and ended in june 2012, and the data have been released to the public as the LAMOST Pilot Data Release in August 2012. The regular survey started in September 2012, and completed its first year of operation in june 2013. The LAMOST DR1 includes a total of 1202 plates containing 2 955 336 spectra, of which 1 790 879 spectra have observed signalto-noise ratio（SNR） ≥ 10. All data with SNR ≥ 2 are formally released as LAMOST DR1 under the LAMOST data policy. This data release contains a total of 2 204 696 spectra, of which 1 944 329 are stellar spectra, 12 082 are galaxy spectra and 5017 are quasars. The DR1 not only includes spectra, but also three stellar catalogs with measured parameters： late A,FGK-type stars with high quality spectra（1 061 918 entries）, A-type stars（100 073 entries）, and M-type stars（121 522 entries）. This paper introduces the survey design, the observational and instrumental limitations, data reduction and analysis, and some caveats. A description of the FITS structure of spectral files and parameter catalogs is also provided.

关键词： techniques: spectroscopic survey—data release—catalog

The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST)

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Research in Astronomy and Astrophysics 2012年第9期12卷 1197-1242页

作者： Xiang-Qun cui Yong-Heng Zhao Yao-Quan Chu Guo-Ping li Qi li li-Ping Zhang Hong-jun Su Zheng-Qiu Yao Ya-Nan Wang xiao-Zheng Xing Xin-Nan li Yong-Tian Zhu gang Wang Bo-Zhong Gu A-li Luo Xin-Qi Xu Zhen-Chao Zhang Gen-Rong liu Hao-Tong Zhang De-Hua Yang Shu-Yun Cao Hai-Yuan Chen jian-jun Chen Kun-Xin Chen ying Chen jia-Ru Chu Lei Feng Xue-Fei Gong Yong-Hui Hou Hong-Zhuan Hu Ning-Sheng Hu Zhong-Wen Hu Lei jia Fang-Hua jiang Xiang jiang Zi-Bo jiang Ge Jin Ai-Hua li Yan li Ye-Ping li Guan-Qunliu zhi-gang liu Huo-Ming Shi Zheng-Hong Tang Qing-Sheng tao Xiang-Yan Yuan Chao Zhai Jing Zhang Yan-Xia Zhang Yong Zhang Ming Zhao Fang Zhou Guo-Hua Zhou Jie Zhu Si-cheng zou National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China yzhao @ *** Nanjing Institute of Astronomical Optics and Technology National Astronomical ObservatoriesChinese Academy of Sciences Nanjing 210042 China University of Science and Tecfinologyof China Hefei 230026 China Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China Institute of Architecture Design and Research Chinese Academy of Sciences Beijing 100190China

The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST, also called the Guo Shou Jing Telescope) is a special reflecting Schmidt telescope. LAMOST’s special design allows both a large aperture (effective aperture of 3.6 m–4.9 m) and a wide field of view (FOV) (5°). It has an innovative active reflecting Schmidt configuration which continuously changes the mirror’s surface that adjusts during the observation process and combines thin deformable mirror active optics with segmented active optics. Its primary mirror (6.67m×6.05 m) and active Schmidt mirror (5.74m×4.40 m) are both segmented, and composed of 37 and 24 hexagonal sub-mirrors respectively. By using a parallel controllable fiber positioning technique, the focal surface of 1.75 m in diameter can accommodate 4000 optical fibers. Also, LAMOST has 16 spectrographs with 32 CCD cameras. LAMOST will be the telescope with the highest rate of spectral acquisition. As a national large scientific project, the LAMOST project was formally proposed in 1996, and approved by the Chinese government in 1997. The construction started in 2001, was completed in 2008 and passed the official acceptance in june 2009. The LAMOST pilot survey was started in October 2011 and the spectroscopic survey will launch in September 2012. Up to now, LAMOST has released more than 480 000 spectra of objects. LAMOST will make an important contribution to the study of the large-scale structure of the Universe, structure and evolution of the Galaxy, and cross-identification of multiwaveband properties in celestial objects.

关键词： techniques: wide field telescope - active optics - multi fiber - spectroscopy survey - data reduction

Data release of the LAMOST pilot survey

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Research in Astronomy and Astrophysics 2012年第9期12卷 1243-1246页

作者： A-li Luo Hao-Tong Zhang Yong-Heng Zhao gang Zhao Xiang-Qun cui Guo-Ping li Yao-Quan Chu jian-Rong Shi gang Wang jian-Nan Zhang Zhong-Rui Bai xiao-Yan Chen Feng-Fei Wang Yan-Xin Guo jian-jun Chen Bing du xiao Kong Ya-Juan Lei yin-Bi li yi-Han Song Yue Wu Yan-Xia Zhang Xin-lin Zhou Fang Zuo Peng du lin He Wen Hou yi-Qiao Dong jian li Guang-wei li Shuang li Jing Song Yuan Tian Meng-Xin Wang Yong-Hui Hou zhi-ying Huo Hong-Zhuan Hu Ning-Sheng Hu Zhong-Wen Hu Lei jia Fang-Hua jiang Xiang jiang Zi-Bo jiang Ge Jin Ai-Hua li Qi li yin-dun Mao Zheng-Hong Tang Qing-Sheng tao liang-Ping Tu Da-Qing Wang Dan Wang jian-Ping Wang Lei Wang Shou-Guan Wang Shu-Qing Wang Ya-Nan Wang You Wang Yue-Fei Wang Ming-zhi wei Xiang-Xiang Xue xiao-Zheng Xing ling-Zhe Xu Xin-Qi Xu Yan Xu De-Hua Yang Shi-Hai Yang Zheng-Qiu Yao Yong Yu Hui Yuan Chao Zhai En-Peng Zhang Jing Zhang li-Ping Zhang weiZhang Yong Zhang Zhen-Chao Zhang Ming Zhao Fang Zhou Yong-Tian Zhu Jie Zhu Si-cheng zou National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China lal @ lamost o rg Nanjing Institute of Astronomical Optics and Technology National Astronomical ObservatoriesChinese Academy of Sciences Nanjing 210042 China University of Science and Technologyof China Hefei 230026 China Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China Institute of Architecture Design and Research Chinese Academy of Sciences Beijing 100190China

This paper describes the data release of the LAMOST pilot survey, which includes data reduction, calibration, spectral analysis, data products and data access. The accuracy of the released data and the information about the FITS headers of spectra are also introduced. The released data set includes 319 000 spectra and a catalog of these objects.

关键词： techniques: spectroscopic survey — data reduction — data release