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Journal of Materiomics 2022年第4期8卷 882-892页

作者： Z.Sun x.Chen Juncheng zhang Huiyuan Geng l.x.zhang State Key laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin150001China

Skutterudite(SKD)thermoelectric materials have high conversion efficiency,great mechanical proper-ties,and economical practicability in the medium temperature range(500e550C).They need to bejoined with metal electrodes to form a thermoelectric power generation device during ***,high contact resistivity,severe element diffusion,and large coefficient of thermal expansionmismatch are main obstacles for their *** address these issues,a FeCoNiCrMo high-entropyalloy diffusion barrier layer was designed and prepared using an arc smelting method in this *** heating temperatures on the microstructure and properties of the bonded joints were *** maximum shear strength was 21.6 Mpa and the corresponding reaction layer thickness,contactresistivity were 3.77 mm,1.8 mUcm2 respectively at 600C,40 MPa,10 *** strength dropped downto 18.8 MPa and the contact resistivity increased to 4.2 mU cm2 after aging for 640 *** modelwas established and it predicted that the contact resistivity would keep lower than 6.5 mU cm2(300 h,100 days)and 11 mU cm2(8760 h,1 year)and the reaction layer thickness would not exceed 25 mm(2400 h,100 days)and 45 mm(8760 h,1 year).

关键词： High-entropy diffusion barrier layer Skutterudite Diffusion bonding Microstructure Shear strength Contact resistivity

Bilirubin adsorption property of mesoporous silica and amine-grafted mesoporous silica

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Nano-Micro letters 2009年第1期1卷 14-18页

作者： l.x.zhang M.Zhu l.M.Guo l.li J.l.Shi State Key laboratory of High Performance and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Science

Nephritic, hepatic and immune failures would lead to the overload of endogenous toxic molecules(e.g. bilirubin, cholic acid, uric acid, creatinine etc.) in human bodies. It is fatal in most cases and extracorporeal blood purification(ECBP) is powerful first-aid therapy. Adsorbents are key parts of ECBP apparatus. Mesoporous silicas should be promising candidates for these medical adsorbents, but there is no report about this. Herein, pure and amine-grafted mesoporous silicas have been applied to adsorb bilirubin, cholic acid, uric acid, creatinine and phenobarbital for the first time. These mesoporous materials show high adsorption capacities for bilirubin and uric acid in phosphate buffer solution(PBS). Effects of pore sizes, amine-modification, temperature and ionic strength on their bilirubin adsorption capacities have been studied in detail.

关键词： Mesoporous silica Bilirubin adsorption Amine-grafted

EFFECT OF BRAZING TIME ON TiC CERMET/IRON JOINT BRAZED WITH Ag-Cu-Zn FIllER METAl

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Acta Metallurgica Sinica(English letters) 2004年第1期17卷 107-110页

作者： l.x.zhang J.C.Feng Z.R.li H.J.liu National Key laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 ChinaNational Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 ChinaNational Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 ChinaNational Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China

The brazing of TiC cermet to iron was carried out at 1223K for 5-20min using Ag-Cu-Zn filler metal. The formation phase and interface structure of the joints were investigated by electron probe microanalysis (EPMA), scanning electron microscopy (SEM) and x-ray diffraction (xRD), and the joint strength was tested by shearing method. The results showed: there occurred three new formation phases, Cu(s.s), FeNi and Ag(s.s) in TiC cermet/iron joint. The interface structure was expressed as TiC cermet/Cu(s.s)+FeNi/Ag(s.s)+a little Cu(s.s)+a little FeNi/Cu(s.s)+FeNi/iron, With brazing time increasing, there appeared highest shear strength of the joints, the value of which was up to 252.2MPa when brazing time was 10min.

关键词： brazing TiC cermet interface shear strength

Active metal brazing of SiO2–BN ceramic and Ti plate with Ag–Cu–Ti＋BN composite filler

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Journal of Materials Science & Technology 2017年第11期33卷 1392-1401页

作者： Z.W.Yang C.l.Wang Y.Wang l.x.zhang D.P.Wang J.C.Feng Tianjin Key lab of Advanced Joining Technology School of Materials Science and Engineering Tianjin University Tianjin 300072 China State Key lab of Advanced Welding andJoining Harbin Institute of Technology Harbin 150001 China

SiO2–BN ceramic and Ti plate were joined by active brazing in vacuum with Ag–Cu–Ti＋BN composite *** effect of BN content,brazing temperature and time on the microstructure and mechanical properties of the brazed joints was *** results showed that a continuous Ti N–Ti B2reaction layer formed adjacent to the SiO2–BN ceramic,whose thickness played a key role in the bonding *** Ti–Cu compound layers,Ti2Cu,Ti3Cu4,Ti Cu2and Ti Cu4,were observed to border Ti substrate due to the strong affinity of Ti and Cu compared with *** central part of the joint was composed of Ag matrix,over which some fine-grains *** added BN particles reacted with Ti in the liquid filler to form fine Ti B whiskers and Ti N particles with low coefficients of thermal expansion（CTE）,leading to the reduction of detrimental residual stress in the joint,and thus improving the joint *** maximum shear strength of 31 MPa was obtained when 3 wt%BN was added in the composite filler,which was 158%higher than that brazed with single Ag–Cu–Ti filler *** morphology and thickness of the reaction layer adjacent to the parent materials changed correspondingly with the increase of BN content,brazing temperature and holding *** on the correlation between the microstructural evolution and brazing parameters,the bonding mechanism of SiO2–BN and Ti was discussed.

关键词： SiO2–BN ceramic BN particles Microstructure Mechanical properties

Adhesive Plastic Deformation of Rough Surfaces

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Adhesive Plastic Deformation of Rough Surfaces

IN-SITU TEM OBSERVATION OF NANOSIlICON FIBRE GROWTH

2003年纳米和表面科学与技术全国会议

作者： l.x.zhang, Ya-Pu Zhao State Key laboratory of Nonlinear Mechanics (lNM), Institute of Mechanics, CAS, Beijing 100080, China

Adhesion is attractive and has close relation to many modern problems of contacts between plastically deformable fractal surfaces on micro/nano scales (such as microelectromechanical systems, MEMS, and nanotechnology). In the present paper a theoretical model is developed to obtain a better understanding of the adhesion of rough surfaces with plastic deformation. The present research is beyond the Gaussian and

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Acta Metallurgica Sinica(English letters) 1999年第5期12卷 1069-1072页

作者： F.C.zhang 1) ,B.T.Hu 1) ,l.x.zhang 1) and C.F.lin 2) 1) Department of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China 2) Institute of Metal Research,The Chinese Academy of Sciences, Shenyang 110015, C

Nano silicon particles can be become nano fibre under low energy electron beam bombarding. The formation of the nano silicon fibre include two stages. At first, on the nano silicon particle surface many silicon atoms are gasified, then these silicon atoms deposit in the place where have more charge on account of the static electrical absorption and the point effect of the charge accumulation , these atoms grow into non crystalline silicon fibres. The second stage is the non crystalline silicon fibres crystallizing. Its crystallizing temperature is about 180℃. The growth mechanism of the nano silicon fibre is vapour solid mode.

关键词： nano fibre silicon in situ TEM observation

Geometrical reconstruction of fluorescence events observed by the lHAASO experiment

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Chinese Physics C 2021年第4期45卷 416-425页

作者： F.Aharonian Q.An Axikegu l.x.Bai Y.x.Bai Y.W.Bao D.Bastieri x.J.Bi Y.J.Bi H.Cai J.T.Cai Z.Cao Z.Cao J.Chang J.F.Chang x.C.Chang B.M.Chen J.Chen l.Chen l.Chen l.Chen M.J.Chen M.l.Chen Q.H.Chen S.H.Chen S.Z.Chen T.l.Chen x.l.Chen Y.Chen N.Cheng Y.D.Cheng S.W.Cui x.H.Cui Y.D.Cui B.Z.Dai H.l.Dai Z.G.Dai Danzengluobu D.della Volpe B.DEtorre Piazzoli x.J.Dong J.H.Fan Y.Z.Fan Z.x.Fan J.Fang J.Fang C.F.Feng l.Feng S.H.Feng Y.l.Feng B.Gao C.D.Gao Q.Gao W.Gao M.M.Ge l.S.Geng G.H.Gong Q.B.Gou M.H.Gu J.G.Guo x.l.Guo Y.Q.Guo Y.Y.Guo Y.A.Han H.H.He H.N.He J.C.He S.l.He x.B.He Y.He M.Heller Y.K.Hor C.Hou x.Hou H.B.Hu S.Hu S.C.Hu x.J.Hu D.H.Huang Q.l.Huang W.H.Huang x.T.Huang Z.C.Huang F.Ji x.l.Ji H.Y.Jia K.Jiang Z.J.Jiang C.Jin D.Kuleshov K.levochkin B.B.li C.li C.li F.li H.B.li H.C.li H.Y.li J.li K.li W.l.li x.li x.li x.R.li Y.li Y.Z.li Z.li Z.li E.W.liang Y.F.liang S.J.lin B.liu C.liu D.liu H.liu H.D.liu J.liu J.l.liu J.l.liu J.S.liu J.Y.liu M.Y.liu R.Y.liu S.M.liu W.liu Y.N.liu Z.x.liu W.J.long R.lu H.K.lv B.Q.Ma l.l.Ma x.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montaruli Y.C.Nan B.Y..Pang P.Pattarakijwanich Z.Y.Pei M.Y.Qi D.Ruffolo V.Rulev A.Saiz l.Shao O.Shchegolev x.D.Sheng J.R.Shi H.C.Song Yu.V.Stenkin V.Stepanov Q.N.Sun x.N.Sun Z.B.Sun P.H.T.Tam Z.B.Tang W.W.Tian B.D.Wang C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang l.P.Wang l.Y.Wang R.N.Wang W.Wang W.Wang x.G.Wang x.J.Wang x.Y.Wang Y.D.Wang Y.J.Wang Y.P.Wang Z.Wang Z.Wang Z.H.Wang Z.x.Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu S.Wu W.x.Wu x.F.Wu S.Q.xi J.xia J.J.xia G.M.xiang G.xiao H.B.xiao G.G.xin Y.l.xin Y.xing D.l.xu R.x.xu l.xue D.H.Yan C.W.Yang F.F.Yang J.Y.Yang l.l.Yang M.J.Yang R.Z.Yang S.B.Yang Y.H.Yao Z.G.Yao Y.M.Ye l.Q.Yin N.Yin x.H.You Z.Y.You Y.H.Yu Q.Yuan H.D.Zeng T.x.Zeng W.Zeng Z.K.Zeng M.Zha x.x.Zhai B.B.zhang H.M.zhang H.Y.zhang J.l.zhang J.W.zhang l.zhang l.zhang l.x.zhang P.F.zhang P.F.zhang R.zhang S.R.zhang S.S.zhang x.zhang x.P.zhang Y.zhang Y.zhang Y.F.zhang Y.l.zhang B.Zhao J.Zhao l.Zhao l.Z.Zhao S.P.Zhao F.Zheng Y.Zheng B.Zhou H.Zhou J.N.Zhou P Key laboratory of Particle Astrophyics&Experimental Physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China TIANFU Cosmic Ray Research Center ChengduSichuanChina State Key laboratory of Paricle Detection and Electronics China University of Science and Technology of China HefeiAnhui 230026China Department of Engineering Physics Tsinghua UniversityBeijing 100084China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China National Space Science Center Chinese Academy of SciencesBeijing 100190China School of Physics Peking UniversityBeijing 100871China Center for Astrophysics Guangzhou UniversityGuangzhouGuangdong 510006China School of Physics and Astronomy&School of Physics(Guangzhou) Sun Yat-sen UniversityZhuhaiGuangdong 519000China School of Physical Science and Technology Guangxi UniversityNanningGuangxi 530004China Hebei Normal University ShijiazhuangHebei 050024China School of Physics and Microelectronics Zhengzhou UniversityZhengzhouHenan 450001China School of Astronomy and Space Science Nanjing UniversityNanjingJiangsu 210023China Key laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjingJiangsu 210023China Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdaoShandong 266237China Key laboratory for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Tsung-Dao lee Institute&School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China School of Physical Science and Technology Southwest Jiaotong UniversityChengduSichuan 610031China College of Physics Sichuan UniversityChengduSichuan 610065China Key laboratory of Cosmic Rays(Tibet University) Ministry of EducationLhasaTibet 850000China School of physics and technology Wuhan UniversityWuhanHubei 430072Ch

The lHAASO-WFCTA experiment,which aims to observe cosmic rays in the sub-EeV range using the fluorescence technique,uses a new generation of high-performance *** ensure that the experiment has ex-cellent detection capability associated with the measurement of the energy spectrum,the primary composition of cosmic rays,and so on,an accurate geometrical reconstruction of air-shower events is *** paper de-scribes the development and testing of geometrical reconstruction for stereo viewed events using the WFCTA(Wide Field of view Cherenkov/Fluorescence Telescope Array)*** approaches,which take full advantage ofthe WFCTA *** *** is the stereo-angular method,which uses the pointing of triggered SiPMs in the shower trajectory,and the other is the stereo-timing method,which uses the triggering time of the fired *** results show that both methods have good geometrical resolution:the resolution of the stereo-timing method is slightly better than the stereo-angular method because the resolution of the latter is slightly limited by the shower track length.

关键词： cosmic ray fluorescence telescope stereo observation geometrical reconstruction

Observation of the Crab Nebula with lHAASO-KM2A−a performance study

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Chinese Physics C 2021年第2期45卷 518-530页

作者： F.Aharonian Q.An Axikegu l.x.Bai Y.x.Bai Y.W.Bao D.Bastieri x.J.Bi Y.J.Bi H.Cai J.T.Cai Z.Cao J.Chang J.F.Chang x.C.Chang B.M.Chen J.Chen l.Chen M.J.Chen M.l.Chen Q.H.Chen S.H.Chen S.Z.Chen T.l.Chen x.l.Chen Y.Chen N.Cheng Y.D.Cheng S.W.Cui x.H.Cui Y.D.Cui B.Z.Dai H.l.Dai Z.G.Dai D.della Volpe B.D'Ettorre Piazzoli x.J.Dong J.H.Fan Y.Z.Fan Z.x.Fan J.Fang K.Fang C.F.Feng l.Feng S.H.Feng Y.l.Feng B.Gao C.D.Gao Q.Gao W.Gao M.M.Ge l.S.Geng G.H.Gong Q.B.Gou M.H.Gu J.G.Guo x.l.Guo Y.Q.Guo Y.Y.Guo Y.A.Han H.H.He H.N.He J.C.He S.l.He x.B.He Y.He M.Heller Y.K.Hor C.Hou x.Hou H.B.Hu S.Hu S.C.Hu x.J.Hu D.H.Huang Q.l.Huang W.H.Huang x.T.Huang Z.C.Huang F.Ji x.l.Ji H.Y.Jia K.Jiang Z.J.Jiang C.Jin D.Kuleshov K.levochkin B.B.li C.li F.li H.B.li H.C.li H.Y.li J.li K.li W.l.li x.li x.R.li Y.li Y.Z.li Z.li E.W.liang Y.F.liang S.J.lin B.liu C.liu D.liu H.liu H.D.liu J.liu J.l.liu J.S.liu J.Y.liu M.Y.liu R.Y.liu S.M.liu W.liu Y.N.liu Z.x.liu W.J.long R.lu H.K.lv B.Q.Ma l.l.Ma x.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montaruli Y.C.Nan B.Y.Pang P.Pattarakijwanich Z.Y.Pei M.Y.Qi D.Ruffolo V.Rulev A.Sáiz l.Shao O.Shchegolev x.D.Sheng J.R.Shi H.C.Song Yu.V.Stenkin V.Stepanov Q.N.Sun x.N.Sun Z.B.Sun P.H.T.Tam Z.B.Tang W.W.Tian B.D.Wang C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang l.P.Wang l.Y.Wang R.N.Wang W.Wang x.G.Wang x.J.Wang x.Y.Wang Y.D.Wang Y.J.Wang Y.P.Wang Z.Wang Z.H.Wang Z.x.Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu S.Wu W.x.Wu x.F.Wu S.Q.xi J.xia J.J.xia G.M.xiang G.xiao H.B.xiao G.G.xin Y.l.xin Y.xing D.l.xu R.x.xu l.xue D.H.Yan C.W.Yang F.F.Yang J.Y.Yang l.l.Yang M.J.Yang R.Z.Yang S.B.Yang Y.H.Yao Z.G.Yao Y.M.Ye l.Q.Yin N.Yin x.H.You Z.Y.You Y.H.Yu Q.Yuan H.D.Zeng T.x.Zeng W.Zeng Z.K.Zeng M.Zha x.x.Zhai B.B.zhang H.M.zhang H.Y.zhang J.l.zhang J.W.zhang l.zhang l.x.zhang P.F.zhang P.P.zhang R.zhang S.R.zhang S.S.zhang x.zhang x.P.zhang Y.zhang Y.F.zhang Y.l.zhang B.Zhao J.Zhao l.Zhao l.Z.Zhao S.P.Zhao F.Zheng Y.Zheng B.Zhou H.Zhou J.N.Zhou P.Zhou R.Zhou x.x.Zhou C.G.Zhu F.R.Zhu H.Zhu K.J.Zhu x.Zuo Key laboratory of Particle Astrophyics&Experimental Physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of Sciences100049 BeijingChina University of Chinese Academy of Sciences 100049 BeijingChina TIANFU Cosmic Ray Research Center ChengduSichuanChina State Key laboratory of Particle Detection and Electronics China University of Science and Technology of China 230026 HefeiAnhuiChina Department of Engineering Physics Tsinghua University100084 BeijingChina National Astronomical Observatories Chinese Academy of Sciences100101 BeijingChina National Space Science Center Chinese Academy of Sciences100190 BeijingChina School of Physics Peking University100871 BeijingChina Center for Astrophysics Guangzhou University510006 GuangzhouGuangdongChina School of Physics and Astronomy&School of Physics(Guangzhou) Sun Yat-sen University519000 ZhuhaiGuangdongChina School of Physical Science and Technology Guangxi University530004 NanningGuangxiChina Hebei Normal University 050024 ShijiazhuangHebeiChina School of Physics and Microelectronics Zhengzhou University450001 ZhengzhouHenanChina School of Astronomy and Space Science Nanjing University210023 NanjingJiangsuChina Key laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of Sciences210023 NanjingJiangsuChina Institute of Frontier and Interdisciplinary Science Shandong University266237 QingdaoShandongChina Key laboratory for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of Sciences200030 ShanghaiChina Tsung-Dao lee Institute&School of Physics and Astronomy Shanghai Jiao Tong University200240 ShanghaiChina School of Physical Science and Technology&School of Information Science and Technology Southwest Jiaotong University610031 ChengduSichuanChina College of Physics Sichuan University610065 ChengduSichuanChina Key laboratory of Cosmic Rays(Tibet University) Ministry of Education850000 LhasaTibetChina School of Physics and Tec

A sub-array of the large High Altitude Air Shower Observatory(lHAASO),KM2A is mainly designed to observe a large fraction of the northern sky to hunt for γ-ray sources at energies above 10 *** though the detector construction is still underway,half of the KM2A array has been operating stably since the end of *** this paper,we present the KM2A data analysis pipeline and the first observation of the Crab Nebula,a standard candle in very high energy γ-ray *** detect γ-ray signals from the Crab Nebula in both energy ranges of 10-100 TeV and>100 TeV with high significance,by analyzing the KM2A data of 136 live days between December 2019 and May *** the observations,we test the detector performance,including angular resolution,pointing accuracy and cosmic-ray background rejection *** energy spectrum of the Crab Nebula in the energy range 10-250 TeV fits well with a single power-law function dN/dE=(1.13±0.05stat±0.08sys)×10^(-14).(E/20 TeV)-309±0.06stat±0.02syscm^(-2) s^(-1) TeV^(-1).It is consistent with previous measurements by other *** opens a new window of γ-ray astronomy above 0.1 PeV through which new ultrahigh-energy γ-ray phenomena,such as cosmic PeVatrons,might be discovered.

关键词： γ-ray Crab Nebula extensive air showers cosmic rays

北京从新肺结核病人分离出结核菌初始耐药性的趋势及其与结核病控制规程的关联

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国际结核病与肺部疾病杂志 1995年第2期 77-80页

作者： l.x.zhang G.Q.Kan D.H.Tu J.S.li x.x.liu 阚冠卿 Beijing Research Institute for Tuberculosis Control Beijing China

背景:北京结核病控制规程。目的:观察结核菌初始耐药性的趋势并探讨它与北京结核病控制规程的关联。设计:从以前无抗结核病治疗史的新肺结核病人中随机收集阳性痰培养分离的菌株于1962年和从1980年起连续做敏感性测验。从北京结核病控... 详细信息

背景:北京结核病控制规程。目的:观察结核菌初始耐药性的趋势并探讨它与北京结核病控制规程的关联。设计:从以前无抗结核病治疗史的新肺结核病人中随机收集阳性痰培养分离的菌株于1962年和从1980年起连续做敏感性测验。从北京结核病控制工作中收集治疗资料。结果:1978年起北京初始耐药性的趋势开始下降。北京结核病治疗工作很成功,使涂片阳性肺结核患病率迅速下降。结论:初始耐药性的趋势显然与北京结核病控制规程落实的进程有关联。建议把初始耐药性的连续观察作为结核病监测的指标之一。

关键词：初始耐药性结核病控制肺结核病人化学治疗规程抗结核病性病人全程监督核菌 Control

A dynamic range extension system for lHAASOWCDA-1

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Radiation Detection Technology and Methods 2021年第4期5卷 520-530页

作者： F.Aharonian Q.An Axikegu l.x.Bai Y.x.Bai Y.W.Bao D.Bastieri x.J.Bi Y.J.Bi H.Cai J.T.Cai Z.Cao Z.Cao J.Chang J.F.Chang x.C.Chang B.M.Chen J.Chen l.Chen l.Chen l.Chen M.J.Chen M.l.Chen Q.H.Chen S.H.Chen S.Z.Chen T.l.Chen x.l.Chen Y.Chen N.Cheng Y.D.Cheng S.W.Cui x.H.Cui Y.D.Cui B.Z.Dai H.l.Dai Z.G.Dai Danzengluobu D.della Volpe B.D’Ettorre Piazzoli x.J.Dong J.H.Fan Y.Z.Fan Z.x.Fan J.Fang K.Fang C.F.Feng l.Feng S.H.Feng Y.l.Feng B.Gao C.D.Gao Q.Gao W.Gao M.M.Ge l.S.Geng G.H.Gong Q.B.Gou M.H.Gu J.G.Guo x.l.Guo Y.Q.Guo Y.Y.Guo Y.A.Han H.H.He H.N.He J.C.He S.l.He x.B.He Y.He M.Heller Y.K.Hor C.Hou x.Hou H.B.Hu S.Hu S.C.Hu x.J.Hu D.H.Huang Q.l.Huang W.H.Huang x.T.Huang Y.Huang Z.C.Huang F.Ji x.l.Ji H.Y.Jia K.Jiang Z.J.Jiang C.Jin D.Kuleshov K.levochkin B.B.li C.li C.li F.li H.B.li H.C.li H.Y.li J.li K.li W.l.li x.li x.li x.R.li Y.li Y.Z.li Z.li Z.li E.W.liang Y.F.liang S.J.lin B.liu C.liu D.liu H.liu H.D.liu J.liu J.l.liu J.S.liu J.Y.liu M.Y.liu R.Y.liu S.M.liu W.liu Y.N.liu Z.x.liu W.J.long R.lu H.K.lv B.Q.Ma l.l.Ma x.H.Ma J.R.Mao A.Masood W.Mitthumsiri T.Montaruli Y.C.Nan B.Y.Pang P.Pattarakijwanich Z.Y.Pei M.Y.Qi D.Ruffolo V.Rulev A.Sáiz l.Shao O.Shchegolev x.D.Sheng J.R.Shi H.C.Song Yu.V.Stenkin V.Stepanov Q.N.Sun x.N.Sun Z.B.Sun P.H.T.Tam Z.B.Tang W.W.Tian B.D.Wang C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang l.P.Wang l.Y.Wang R.N.Wang W.Wang W.Wang x.G.Wang x.J.Wang x.Y.Wang Y.D.Wang Y.J.Wang Y.P.Wang Z.Wang Z.Wang Z.H.Wang Z.x.Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen C.Y.Wu H.R.Wu S.Wu W.x.Wu x.F.Wu S.Q.xi J.xia J.J.xia G.M.xiang G.xiao H.B.xiao G.G.xin Y.l.xin Y.xing D.l.xu R.x.xu l.xue D.H.Yan C.W.Yang F.F.Yang J.Y.Yang l.l.Yang M.J.Yang R.Z.Yang S.B.Yang Y.H.Yao Z.G.Yao Y.M.Ye l.Q.Yin N.Yin x.H.You Z.Y.You Y.H.Yu Q.Yuan H.D.Zeng T.x.Zeng W.Zeng Z.K.Zeng M.Zha x.x.Zhai B.B.zhang H.M.zhang H.Y.zhang J.l.zhang J.W.zhang l.zhang l.zhang l.x.zhang P.F.zhang P.P.zhang R.zhang S.R.zhang S.S.zhang x.zhang x.P.zhang Y.zhang Y.zhang Y.F.zhang Y.l.zhang B.Zhao J.Zhao l.Zhao l.Z.Zhao S.P.Zhao F.Zheng Y.Zheng B.Zhou H.Zhou J.N.Zhou Key laboratory of Particle Astrophyics&Experimental Physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China TIANFU Cosmic Ray Research Center ChengduSichuanChina State Key laboratory of Particle Detection and Electronics BeijingChina University of Science and Technology of China Hefei 230026AnhuiChina Department of Engineering Physics Tsinghua UniversityBeijing 100084China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China National Space Science Center Chinese Academy of SciencesBeijing 100190China School of Physics Peking UniversityBeijing 100871China Center for Astrophysics Guangzhou UniversityGuangzhou 510006GuangdongChina School of Physics and Astronomy&School of Physics(Guangzhou) Sun Yat-sen UniversityZhuhai 519000GuangdongChina School of Physical Science and Technology Guangxi UniversityNanning 530004GuangxiChina Hebei Normal University Shijiazhuang 050024HebeiChina School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001HenanChina School of Astronomy and Space Science Nanjing UniversityNanjing 210023JiangsuChina Key laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237ShandongChina Key laboratory for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Tsung-Dao lee Institute&School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China School of Physical Science and Technology&School of Information Science and Technology Southwest Jiaotong UniversityChengdu 610031SichuanChina College of Physics Sichuan UniversityChengdu 610065SichuanChina Key laboratory of Cosmic Rays(Tibet University) Ministry of EducationLhasa 850000TibetChina School of Physics

Purpose The main scientific goal of lHAASO-WCDA is to survey gamma-ray sources with energy from 100 GeV to 30 *** observe high-energy shower events,especially to measure the energy spectrum of cosmic rays from 100 TeV to 10 PeV,a dynamic range extension system(WCDA++)is designed to use a 1.5-inch PMT with a dynamic range of four orders of magnitude for each cell in *** The dynamic range is extended by using these PMTs to measure the effective charge density in the core region of air shower events,which is an important parameter for identifying the composition of primary *** and Conclusion The system has been running for more than one *** this paper,the details of the design and performance of WCDA++are presented.

关键词： lHAASO-WCDA WCDA++ Water Cherenkov detector Performance