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Reconstruction of Cherenkov im.ge bym.ltiple telescopes of LHAASO-w.CTA

Radiation Detection Technology and m.thods 2022年第4期6卷 544-557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 j.T.Cai z.e Cao z.en Cao j.Chang j.F.Chang E.S.chen Liang chen Liang chen Long chen m.j.chen m.L.chen q.H.chen S.H.chen S.z.chen T.L.chen Y.chen H.L.cheng N.cheng Y.D.cheng S.w.Cui X.H.Cui Y.D.Cui B.D’Ettorre Piaz.oli B.z.Dai H.L.Dai z.G.Dai Danz.ngluobu Ddella Volpe K.K.Duan j.H.Fan Y.z.Fan z.X.Fan j.Fang K.Fang C.F.Feng L.Feng S.H.Feng X.T.Feng Y.L.Feng B.Gao C.D.Gao L.q.Gao q.Gao w.Gao w.K.Gao m.m.Ge L.S.Geng G.H.Gong q.B.Gou m.H.Gu F.L.Guo j.G.Guo X.L.Guo Y.q.Guo Y.Y.Guo Y.A.Han H.H.He H.N.He S.L.He X.B.He Y.He m.Heller Y.K.Hor C.Hou X.Hou H.B.Hu q.Hu S.Hu S.C.Hu X.j.Hu D.H.Huang w.H.Huang X.T.Huang X.Y.Huang Y.Huang z.C.Huang X.L.j. H.Y.j.a K.j.a K.j.ang z.j.j.ang m.j.n m.m.Kang T.Ke D.Kuleshov K.Levochkin B.B.Li cheng Li Cong Li F.Li H.B.Li H.C.Li H.Y.Li j.Li j.an Li j.e Li K.Li w.Li XRLi Xin Li Xin Li Yz.i z.e Li z.uo 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.Liu Y.N.Liu w.j.Long R.Lu q.Luo H.K.Lv B.q.m. L.L.m. X.H.m. j.R.m.o A.m.sood z.m.n w.m.tthum.iri Y.C.Nan z.w.Ou B.Y.Pang P.Pattarakij.anich z.Y.Pei m.Y.q. Y.q.q. B.q.q.ao j.j.q.n D.Ruffolo A.Sáiz.C.Y.Shao L.Shao O.Shchegolev X.D.Sheng j.Y.Shi H.C.Song Yu.V.Stenkin V.Stepanov Y.Su 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.wang R.N.wang w.wang X.G.wang X.Y.wang Y.wang Y.D.wang Y.j.wang Y.P.wang z.H.wang z.X.wang z.en wang z.eng wang D.m.w.i j.j.w.i Y.j.w.i T.w.n C.Y.w. H.R.w. S.w. X.F.w. Y.S.w. S.q.Xi j.Xia j.j.Xia G.m.Xiang D.X.Xiao G.Xiao G.G.Xin Y.L.Xin Y.Xing z.Xiong D.L.Xu R.X.Xu L.Xue D.H.Yan j.z.Yan C.w.Yang F.F.Yang H.w.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.Yue H.D.z.ng T.X.z.ng w.z.ng z.K.z.ng m.z.a X.X.z.ai B.B.z.ang F.z.ang H.m.z.ang H.Y.z.ang j.L.z.ang L.X.z.ang Li z.ang Lu z.ang P.F.z.ang P.P.z.ang R.z.ang S.B.z.ang S.R.z.ang S. Key Laboratory of Particle Astrophyics&Experim.ntal Physics Division&Com.uting Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academ. of Sciences Beijing 100049China TIANFU Cosm.c Ray Research Center ChengduSichuanChina Dublin Institute for Advanced Studies 31 Fitzwilliam Place2DublinIreland m.x-Planck-Institut for Nuclear Physics P.O.Box 10398069029 HeidelbergGermany State Key Laboratory of Particle Detection and Electronics BeijingChina University of Science and Technology of China Hefei 230026AnhuiChina School of Physical Science and Technology&School of Inform.tion Science and Technology Southwest Jiaotong UniversityChengdu 610031SichuanChina College of Physics Sichuan UniversityChengdu 610065SichuanChina School of Astronom. and Space Science Nanjing UniversityNanjing 210023JiangsuChina Center for Astrophysics Guangzhou UniversityGuangzhou 510006GuangdongChina Key Laboratory of Dark m.tter and Space Astronom.&Key Laboratory of Radio Astronom. Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina Key Laboratory for Research in Galaxies and Cosm.logy Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Key Laboratory of Cosm.c Rays(Tibet University) Ministry of EducationLhasa 850000TibetChina National Astronom.cal Observatories Chinese Academy of SciencesBeijing 100101China Hebei Norm.l University Shijiazhuang 050024HebeiChina School of Physics and Astronom.(z.uhai)&Sino-French Institute of Nuclear Engineering and Technology(z.uhai) Sun Yat-sen UniversityZhuhai 519000China School of Physics(Guangz.ou) Sun Yat-sen UniversityGuangzhou 510275GuangdongChina Dipartim.nto di Fisica dell’Universitàdi Napoli“Federico II” Complesso Universitario di Monte Sant’Angelovia Cinthia80126 NapoliItaly School of Physics and Astronom. Yunnan UniversityKunming 650091YunnanChina Départem.nt de Physiq.e Nucléaire et Corpusculaire Facultéde SciencesUniversitéde Genève

Introduction One of m.in scientiﬁc goals of the Large High Altitude Air Show.r Observatory(LHAASO)is to accurately m.asure the energy spectra of different cosm.c ray com.ositions around the‘knee’*** w.de Field-of-View.FoV)Cherenkov Telescope Array(w.CTA),w.ich is one of the m.in detectors of LHAASO and has 18 telescopes,is built to achieve this *** telescopes are put together and point to connected directions for a larger *** Telescopes are deployed spatially as close as possible,but due to their ow. siz.,the distance betw.en tw. adj.cent telescopes is about 10 ***,the Cherenkov lateral distribution and the parallax betw.en the tw. telescopes should be considered in the event building process for im.ges crossing over the boundaries of FoVs of the *** event building m.thod for Cherenkov im.ges m.asured by m.ltiple telescopes of w.CTA is *** perform.nce of the show.r m.asurem.nts using the com.ined im.ges is evaluated by com.aring w.th show.rs that are fully contained by a virtual telescope in *** and conclusion It is proved that the developed event building process can help to increase the FoV of w.CTA by 30%w.ile m.intaining the sam. reconstruction q.ality,com.ared to the separate telescope reconstruction m.thod.

关键词： m.thod directions conclusion

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The design and perform.nce of GRD onboard the GECAm.satellite

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Radiation Detection Technology and m.thods 2022年第1期6卷 43-52页

作者： z.H.An X.L.Sun D.L.z.ang S.Yang X.q.Li X.Y.w.n K.Gong X.H.Liang X.j.Liu Y.q.Liu Y.G.Li S.L.Xiong Y.B.Xu Fan z.ang X.Y.z.ao C.Cai z.Chang G.chen C.chen Y.Y.Du P.Y.Feng m.Gao R.Gao D.Y.Guo j.j.He D.j.Hou C.Y.Li G.Li L.Li X.F.Li m.S.Li F.j.Lu H.Lu B.m.ng w.X.peng F.Shi H.wang j.z.wang Y.S.wang H.z.wang X.w.n S.Xiao Y.P.Xu j.w.Yang q.B.Yi S.N.z.ang C.Y.z.ang C.m.z.ang Fei z.ang Y.z.ao X.z.ou CAS Institute of High Energy PhysicsBeijing 100049China State Key Laboratory of Particle Detection and Electronics Beijing 100049China 3 Xiangtan UniversityXiangtan 411105China 4 Beijing Normal UniversityBeijing 110875China Xiangtan University Xiangtan 411105China Beij.ng Norm.l University Beijing 110875China

Background Each GECAm.satellite payload contains 25 gam.a-ray detectors(GRDs),w.ich can detect gam.a-rays and particles and can roughly localiz. the Gam.a-Ray Bursts(GRBs).GRD w.s designed using lanthanum.brom.de(LaBr3)crystal as the sensitive m.terial w.th the rear end coupled w.th silicon photom.ltiplier(SiPm.array for *** In aerospace engineering design of GRD,there are m.ny key points to be *** this paper,w. present the specific design schem. of GRD,the assem.ly and the perform.nce test results of *** Based on m.nte Carlo sim.lation and experim.ntal test results,the specific schem.tic design and assem.ling process of GRD w.re *** being fully assem.led,the GRDs w.re conducted perform.nce tests by using radioactive source and also conducted random.vibration *** and conclusion The test results show.that all satellite-borne GRDs have energy resolutionm.eting req.irem.nts of satellite in scientific *** random.vibration test show. that GRD can m.intain in a stable perform.nce,w.ich m.ets the req.irem.nt of spatial application.

关键词： Lanthanum.brom.de scintillator SiPm.array GECAm Gam.a-ray detector Energy resolution

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A dynam.c range extension system.for LHAASOw.DA-1

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Radiation Detection Technology and m.thods 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 Danz.ngluobu D.della Volpe B.D’Ettorre Piaz.oli 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.j. X.L.j. H.Y.j.a K.j.ang z.j.j.ang C.j.n 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.m. L.L.m. X.H.m. j.R.m.o A.m.sood w.m.tthum.iri T.m.ntaruli Y.C.Nan B.Y.Pang P.Pattarakij.anich z.Y.Pei m.Y.q. 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.w.i j.j.w.i Y.j.w.i T.w.n C.Y.w. H.R.w. S.w. w.X.w. X.F.w. 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.z.ng T.X.z.ng w.z.ng z.K.z.ng m.z.a X.X.z.ai B.B.z.ang H.m.z.ang H.Y.z.ang j.L.z.ang j.w.z.ang L.z.ang L.z.ang L.X.z.ang P.F.z.ang P.P.z.ang R.z.ang S.R.z.ang S.S.z.ang X.z.ang X.P.z.ang Y.z.ang Y.z.ang Y.F.z.ang Y.L.z.ang B.z.ao j.z.ao L.z.ao L.z.z.ao S.P.z.ao F.z.eng Y.z.eng B.z.ou H.z.ou j.N.z.ou Key Laboratory of Particle Astrophyics&Experim.ntal Physics Division&Com.uting Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academ. of Sciences Beijing 100049China TIANFU Cosm.c Ray Research Center ChengduSichuanChina State Key Laboratory of Particle Detection and Electronics BeijingChina University of Science and Technology of China Hefei 230026AnhuiChina Departm.nt of Engineering Physics Tsinghua UniversityBeijing 100084China National Astronom.cal 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 Astronom.&School of Physics(Guangz.ou) Sun Yat-sen UniversityZhuhai 519000GuangdongChina School of Physical Science and Technology Guangxi UniversityNanning 530004GuangxiChina Hebei Norm.l University Shijiazhuang 050024HebeiChina School of Physics and m.croelectronics Zhengzhou UniversityZhengzhou 450001HenanChina School of Astronom. and Space Science Nanjing UniversityNanjing 210023JiangsuChina Key Laboratory of Dark m.tter and Space Astronom. Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237ShandongChina Key Laboratory for Research in Galaxies and Cosm.logy Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Tsung-Dao Lee Institute&School of Physics and Astronom. Shanghai Jiao Tong UniversityShanghai 200240China School of Physical Science and Technology&School of Inform.tion Science and Technology Southwest Jiaotong UniversityChengdu 610031SichuanChina College of Physics Sichuan UniversityChengdu 610065SichuanChina Key Laboratory of Cosm.c Rays(Tibet University) Ministry of EducationLhasa 850000TibetChina School of Physics

Purpose The m.in scientific goal of LHAASO-w.DA is to survey gam.a-ray sources w.th energy from.100 GeV to 30 *** observe high-energy show.r events,especially to m.asure the energy spectrum.of cosm.c rays from.100 TeV to 10 PeV,a dynam.c range extension system.w.DA++)is designed to use a 1.5-inch Pm. w.th a dynam.c range of four orders of m.gnitude for each cell in *** The dynam.c range is extended by using these Pm.s to m.asure the effective charge density in the core region of air show.r events,w.ich is an im.ortant param.ter for identifying the com.osition of prim.ry *** and Conclusion The system.has been running for m.re than one *** this paper,the details of the design and perform.nce of w.DA++are presented.

关键词： LHAASO-w.DA w.DA++ w.ter Cherenkov detector Perform.nce

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The technology for detection of gam.a-ray burst w.th GECAm.satellite

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Radiation Detection Technology and m.thods 2022年第1期6卷 12-25页

作者： X.q.Li X.Y.w.n z.H.An C.Cai z.Chang G.chen C.chen Y.Y.Du m.Gao R.Gao K.Gong D.Y.Guo j.j.He D.j.Hou Y.G.Li C.Y.Li G.Li L.Li X.F.Li m.S.Li X.H.Liang X.j.Liu Y.q.Liu F.j.Lu H.Lu B.m.ng w.X.peng F.Shi X.L.Sun H.wang j.z.wang Y.S.wang H.z.wang X.w.n S.Xiao S.L.Xiong Y.B.Xu Y.P.Xu S.Yang j.w.Yang q.B.Yi D.L.z.ang Fan z.ang S.N.z.ang C.Y.z.ang C.m.z.ang Fei z.ang X.Y.z.ao Y.z.ao X.z.ou C.S.z.ang j.P.Yu L.Chang K.K.z.ang j.Huang Y.m.chen X.B.Han Institute of High Energy Physics CASBeijing 100049China Xiangtan University Xiangtan 411105China Beij.ng Norm.l University Beijing 110875China Beij.ng Glass Research Institute Beijing 101100China Innovation Academ. for m.crosatellites of CAS Shanghai 201204China

Introduction The m.in physical obj.ctive of the GECAm.satellite is to detect gam.a-ray bursts,w.ich is related to gravitational w.ves of double com.act obj.ct *** GECAm.satellite also detects and investigates various bursts of high-energy celestial *** and m.thods In this study,w. designed,developed and calibrated the payload and launched it into orbit w.th GECAm.*** payload consists of the gam.a ray detector(GRD,for detecting 4 keV–4 m.V X/γray),the charged particle detector(CPD,for detecting 150 keV–5 m.V charged particle),and the electronic box(EBOX).The all-sky field coverage is achieved via tw. 229-degree large-area satellites positioned 180 degrees apart and are on opposite sides of the *** satellite is eq.ipped w.th 25 GRDs and 8 CPDs;thus,the satellite can identify charged particle bursts in ***-ray detectors adopt lanthanum.brom.de crystal technology com.ined w.th silicon *** is the first tim. that this technology w.s used m.ssively in space *** The GECAm.satellite can q.ickly determ.ne the direction of gam.a-ray bursts(positioning)via indexing and fitting m.thod,w.ile the transm.t variability,energy spectrum.and direction of the gam.a-ray bursts guide subseq.ent observations through the Beidou-3 RDSS in q.asi-real *** w.ll play an im.ortant role in the study of high energy celestial bursts.

关键词： GECAm Gam.a-ray burst Lanthanum.brom.de crystal Silicon photom.ltiplier Beidou short m.ssage

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Dedicated SiPm.array for GRD of GECAm

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Radiation Detection Technology and m.thods 2022年第1期6卷 63-69页

作者： D.L.z.ang X.L.Sun z.H.An X.q.Li X.Y.w.n K.Gong C.Cai z.Chang G.chen C.chen Y.Y.Du m.Gao R.Gao D.Y.Guo j.j.He D.j.Hou Y.G.Li C.Y.Li G.Li L.Li X.F.Li m.S.Li X.H.Liang X.j.Liu Y.q.Liu F.j.Lu H.Lu B.m.ng w.X.peng F.Shi H.wang j.z.wang Y.S.wang H.z.wang X.w.n S.Xiao S.L.Xiong Y.B.Xu Y.P.Xu S.Yang1 X.z.ou j.w.Yang Fan z.ang S.N.z.ang C.Y.z.ang C.m.z.ang Fei z.ang X.Y.z.ao Institute of High Energy Physics CASBeijing 100049China State Key Laboratory of Particle Detection and Electronics Beijing 100049China

Purpose The discovery of gravitational w.ves and gam.a-ray bursts heralds the era of m.lti-m.ssenger *** the adoption of tw. sm.ll satellites to achieve the all-sky m.nitoring of gam.a-ray bursts,the gravitational w.ve highenergy electrom.gnetic counterpart all-sky m.nitor(GECAm.possesses a q.asi-real-tim. early w.rning ability and plays an im.ortant role in positioning the sources of gravitational w.ves and in subseq.ent *** satellite of GECAm.w.s fitted w.th 253-inch-diam.ter gam.a-ray detectors(GRD),covering an energy range of 8–2 *** have adopted silicon photom.ltiplier tubes(SiPm.in lieu of photom.ltiplier tubes(Pm.)to adapt to the dim.nsional lim.tations of *** A uniq.e 3-inch circular SiPm.array w.s *** this design,646×6 m. chips w.re arranged evenly in a circular m.nner w.th the seam. filled w.th reflecting film.,thus achieving satisfactory uniform.ty of light *** integrated pre-am.lifier circuit on the back of the SiPm.array adopted tw.-level grouping and sum.ing;further,it achieved a satisfactory signal-to-noise *** high-gain and low.gain channels w.re adopted to achieve a large dynam.c range,and tw. independent pow.r supply units w.re used,w.ere each unit can be closed separately,thus im.roving *** Perform.nce studies show.that this SiPm.array m.ets the req.irem.nts of *** A 3-inch SiPm.array have been developed that uses grouped sum.ation,reflective film.,a circular arrangem.nt,tw. groups of independent pow.r supplies,high-and low.gain signals,differential signal output technologies,*** solution can be used not only for GECAm.but also as a general solution for SiPm.based scintillation detectors.

关键词： SiPm GECAm Gam.a-ray Signal-to-noise ratio Reflecting film Pre-am.lifier

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Line-of-show.r trigger m.thod to low.r energy threshold for GRB detection using LHAASO-w.DA

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Radiation Detection Technology and m.thods 2021年第4期5卷 531-541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.Chan 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.chen Y.D.chen S.w.Cui X.H.Cui Y.D.Cui B.z.Dai H.L.Dai z.G.Dai Danz.ngluobu D.della Volpe B.D’Ettorre Piaz.oli X.j.Don j.H.Fan Y.z.Fan z.X.Fan j.Fang K.Fan C.F.Feng L.Feng S.H.Fen Y.L.Feng B.Gao C.D.Gao q.Gao w.Gao m.m.Ge L.S.Gen 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.Huan w.H.Huang X.T.Huang z.C.Huang F.j. X.L.j. H.Y.j.a K.j.ang z.j.j.ang C.j.n 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.m. L.L.m. X.H.m. j.R.m.o A.m.sood w.m.tthum.iri T.m.ntaruli Y.C.Nan B.Y.Pang P.Pattarakij.anich z.Y.Pei m.Y.q. D.Ruffolo V.Rulev A.Sáiz.L.Shao O.Shchegolev X.D.Shen 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.w.n C.wang H.wang H.G.wang j.C.wang j.S.wang L.P.wang L.Y.w.n R.N.wang w.wang w.wang X.G.wang X.j.w.n X.Y.wang Y.D.w.n Y.j.w.n Y.P.wang z.wang z.wang z.H.wang z.X.wang D.m.w.i j.j.w.i Y.j.w.i T.w.n C.Y.w. H.R.w. S.w. w.X.w. X.F.w. 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.Yan 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.z.ng T.X.z.ng w.z.ng z.K.z.ng m.z.a X.X.z.ai B.B.z.ang H.m.z.ang H.Y.z.ang j.L.z.ang j.w.z.ang L.z.ang L.z.ang L.X.z.ang P.F.z.ang P.P.z.ang R.z.ang S.R.z.ang S.S.z.an X.z.ang X.P.z.an Y.z.an Y.z.ang Y.F.z.ang Y.L.z.an B.z.ao j.z.ao L.z.ao L.z.z.ao S.P.z.ao F.z.eng Y.z.eng B.z.ou H.z.ou j.N.z.ou P.z.ou R.z.ou X.X.z.ou C.G. Key Laboratory of Particle Astrophysics&Experim.ntal Physics Division&Com.uting Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academ. of Sciences Beijing 100049China TIANFU Cosm.c Ray Research Center ChengduSichuanChina State Key Laboratory of Particle Detection and Electronics BeijingChina University of Science and Technology of China Hefei 230026AnhuiChina Departm.nt of Engineering Physics Tsinghua UniversityBeijing 100084China National Astronom.cal 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 Astronom.&School of Physics(Guangz.ou) Sun Yat-sen UniversityZhuhai 519000GuangdongChina School of Physical Science and Technology Guangxi UniversityNanning 530004GuangxiChina Hebei Norm.l University Shijiazhuang 050024HebeiChina School of Physics and m.croelectronics Zhengzhou UniversityZhengzhou 450001HenanChina School of Astronom. and Space Science Nanjing UniversityNanjing 210023JiangsuChina Key Laboratory of Dark m.tter and Space Astronom. Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237ShandongChina Key Laboratory for Research in Galaxies and Cosm.logy Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Tsung-Dao Lee Institute&School of Physics and Astronom. Shanghai Jiao Tong UniversityShanghai 200240China School of Physical Science and Technology&School of Inform.tion Science and Technology Southwest Jiaotong UniversityChengdu 610031SichuanChina College of Physics Sichuan UniversityChengdu 610065SichuanChina Key Laboratory of Cosm.c Rays(Tibet University) Ministry of EducationLhasa 850000TibetChina School of Physic

Purpose Observation of high energy and very high em.ssion from.Gam.a Ray Bursts(GRBs)is crucial to study the gigantic explosion and the underline *** a large field-of-view.and alm.st full duty cycle,the w.ter Cherenkov Detector Array(w.DA),a sub-array of the Large High Altitude Air Show.r Observatory(LHAASO),is appropriate to m.nitor the very high energy em.ssion from.unpredictable transients such as *** Nevertheless,the m.in issue for an extensive air show.r array is the high energy threshold w.ich lim.ts the horiz.n of the *** address this issue a new.trigger m.thod is developed in this article to low.r the energy threshold of w.DA for GRB *** The proposed m.thod significantly im.roves the detection efficiency of w.DA for gam.a-rays around the GRB direction at 10-300 *** sensitivity of the w.DA for GRB detection w.th the new.trigger m.thod is *** achieved sensitivity of the q.arter w.DA array above 10 GeV is com.arable w.th that of *** data analysis process and corresponding fluence upper lim.t for GRB 190719C is presented as an exam.le.

关键词： LHAASO w.DA GRB

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Perform.nce of LHAASO-w.DA and observation of the Crab Nebula as a standard candle

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Chinese Physics C 2021年第8期45卷 166-181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 Danz.ngluobu D.della Volpe B.D'Ettorre Piaz.oli 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.j. X.L.j. H.Y.j.a K.j.ang z.j.j.ang C.j.n 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.m. L.L.m. X.H.m. j.R.m.o A.m.sood w.m.tthum.iri T.m.ntaruli Y.C.Nan B.Y.Pang P.Pattarakij.anich z.Y.Pei m.Y.q. B.q.q.ao 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.w.i j.j.w.i Y.j.w.i T.w.n C.Y.w. H.R.w. S.w. w.X.w. X.F.w. 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.z.ng T.X.z.ng w.z.ng z.K.z.ng m.z.a X.X.z.ai B.B.z.ang H.m.z.ang H.Y.z.ang j.L.z.ang j.w.z.ang L.z.ang L.z.ang L.X.z.ang P.F.z.ang P.P.z.ang R.z.ang S.R.z.ang S.S.z.ang X.z.ang X.P.z.ang Y.z.ang Y.z.ang Y.F.z.ang Y.L.z.ang B.z.ao j.z.ao L.z.ao L.z.z.ao S.P.z.ao F.z.eng Y.z.eng B.z.ou H.z.ou j.N.z.ou Key Laboratory of Particle Astrophyics&Experim.ntal Physics Division&Com.uting Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academ. of Sciences Beijing 100049China TIANFU Cosm.c Ray Research Center ChengduSichuanChina State Key Laboratory of Particle Detection and Electronics China University of Science and Technology of China Hefei 230026China Departm.nt of Engineering Physics Tsinghua UniversityBeijing 100084China National Astronom.cal 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 510006China School of Physics and Astronom.&School of Physics(Guangz.ou) Sun Yat-sen UniversityZhuhai 519082China School of Physical Science and Technology Guangxi UniversityNanning 530004China Hebei Norm.l University Shijiazhuang 050024China School of Physics and m.croelectronics Zhengzhou UniversityZhengzhou 450001China School of Astronom. and Space Science Nanjing UniversityNanjing 210023China Key Laboratory of Dark m.tter and Space Astronom. Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China Key Laboratory for Research in Galaxies and Cosm.logy Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Tsung-Dao Lee Institute&School of Physics and Astronom. Shanghai Jiao Tong UniversityShanghai 200240China School of Physical Science and Technology&School of Inform.tion Science and Technology Southwest Jiaotong UniversityChengdu 610031China College of Physics Sichuan UniversityChengdu 610065China Key Laboratory of Cosm.c Rays(Tibet University) Ministry of EducationLhasa 850000China School of Physics and Technology Wuhan UniversityWuhan 430072China School of Physics and Astronom. Yunnan University

The first w.ter Cherenkov detector of the LHAASO experim.nt(w.DA-1)has been operating since April *** data for the first year have been analyz.d to test its perform.nce by observing the Crab Nebula as a standard *** w.DA-1 achieves a sensitivity of 65 m.U per year,w.th a statistical threshold of 5 *** accom.lish this,a 97.7%cosm.c-ray background rej.ction rate around 1 TeV and 99.8%around 6 TeV w.th an ap proxim.te photon acceptance of 50%is achieved after applying an algorithm.to separate gam.a-induced *** angular resolution is m.asured using the Crab Nebula as a point source to be approxim.tely 0.45°at 1 TeV and better than 0.2°above 6 TeV,w.th a pointing accuracy better than 0.05°.These values all m.tch the design *** energy resolution is found to be 33%for gam.a rays around 6 *** spectral energy distribution of the Crab Nebula in the range from.500 GeV to 15.8 TeV is m.asured and found to be in agreem.nt w.th the results from.other TeV gam.a ray observatories.

关键词： LHAASO-w.DA Crab Nebula angular resolution spectral energy distribution

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Prospects for a m.lti-TeV gam.a-ray sky survey w.th the LHAASO w.ter Cherenkov detector array

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Chinese Physics C 2020年第6期44卷 123-132页

作者： F.Aharonian V.Alekseenko q.An Axikegu L.X.Bai Y.w.Bao D.Bastieri9 X.j.Bi H.Cai z.e Cao z.en Cao j.Chang j.F.Chang X.C.Chang S.P.Chao B.m.chen j.chen L.chen L.chen m.L.chen m.j.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 Danz.ngluobu B.D'Ettorre Piaz.oli j.Fang j.H.Fan Y.z.Fan C.F Feng L.Feng S.H.Feng Y.L.Feng B.Gao q.Gao w.Gao m.m.Ge L.S.Geng G.H.Gong q.B.Gou m.H.Gu Y.q.Guo Y.Y.Guo Y.A.Han H.H.He j.C.He m.Heller S.L.He Y.He C.Hou D.H.Huang q.L.Huang w.H.Huang X.T.Huang H.B.Hu S.Hu H.Y.j.a K.j.ang F.j. C.j.n X.L.j. K.Levochkin E.w.Liang Y.F Liang cheng Li Cong Li F.Li H.Li H.B.Li H.C.Li H.m.Li j.Li K.Li w.L.Li X.Li X.R.Li Y.Li z.Li z.Li B.Liu C.Liu D.Liu H.D.Liu H.Liu j.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.m. L.L.m. j.R.m.o A.m.sood X.H.m. w.m.tthum.iri T.m.ntaruli Y.C.Nan P.Pattarakij.anich z.Y.Pei B.q.q.ao m.Y.q. D.Ruffolo V.Rulev A.Sáiz.L.Shao O.Shchegolev X.D.Sheng j.R.Shi Y.Stenkin V.Stepanov z.B.Sun P.H.T.Tam.z.B.Tang w.w.Tian D.D.Volpe C.wang H.wang H.G.wang j.C.wang L.Y.wang w.wang w.wang X.G.wang X.Y.wang X.j.wang Y.D.wang Y.j.wang Y.N.wang Y.P.wang z.wang z.H.wang z.X.wang D.m.w.i j.j.w.i T.w.n C.Y.w. H.R.w. S.w. w.X.w. X.F.w. G.m.Xiang G.Xiao G.G.Xin Y.Xing R.X.Xu L.Xue D.H.Yan C.w.Yang F.F.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 q.Yuan Y.H.Yu z.j.j.ang H.D.z.ng T.X.z.ng w.z.ng z.K.z.ng m.z.a B.B.z.ang H.m.z.ang H.Y.z.ang j.L.z.ang j.w.z.ang L.z.ang P.F.z.ang P.P.z.ang S.R.z.ang S.S.z.ang X.z.ang X.P.z.ang Yi z.ang Yong z.ang Y.F.g z.ang B.z.ao j.z.ao L.z.ao L.z.z.ao F.z.eng Y.z.eng j.N.z.ou P.z.ou R.z.ou X.X.z.ou C.G.z.u F.R.z.u H.z.u K.j.z.u X.z.o Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China University of Chinese Academ. of Sciences Beijing 100049China TIANFU Cosm.c Ray Research Center ChengduShichuanChina University of Science and Technology of China 230026 HefeiAnhuiChina Tsinghua University 100084 BeijingChina National Astronom.cal 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 Sun Yat-sen University 519000 ZhuhaiGuangdongChina Shool of Physics and Technology Guangxi University530004 NanningGuangxiChina Hebei Norm.l University 050024 ShijiazhuangHebeiChina School of Physics and Engineering Zhengzhou University450001 ZhengzhouHenanChina Nanj.ng University 210023 NanjingJiangsuChina Key Laboratory of Dark m.tter and Space Astronom. Purple Mountain ObservatoryChinese Academy of Sciences210034 NanjingJiangsuChina Institute of Frontier and Interdisciplinary Science Shandong University266237 QingdaoShandongChina Shanghai Astronom.cal Observatory Chinese Academy of Sciences200030 ShanghaiChina School of Physical Science and Technology Southwest Jiaotong University610031 ChengduSichuanChina Sichuan University 610065 ChengduSichuanChina Key Laboratory of Cosm.c Rays(Tibet University) Ministry of Education850000 LhasaTibetChina School of physics and technology Wuhan university430072 WuhanChina Yunnan University 650091 KunmingYunnanChina Yunnan Astronom.cal Observatories Chinese Academy of Sciences650216 KunmingYunnanChina Institute for Nuclear Research Russian Academy of SciencesMoscowRussia Départem.nt de Physiq.e Nucléaire et Corpusculaire Facultéde SciencesUniversitéde GenéveGenevaSwitzerland Departm.nt of Physics Faculty of ScienceMahidol UniversityBangkokThailand Dublin Institute for Advanced Studies 31 Fitzwilliam PlaceDublin 2Ireland m.x-Planc

The w.ter Cherenkov Detector Array(w.DA) is a m.j.r com.onent of the Large High Altitude Air Show.r Array Observatory(LHAASO), a new.generation cosm.c-ray experim.nt w.th unprecedented sensitivity, currently under construction. w.DA is aim.d at the study of TeV γ-rays. In order to evaluate the prospects of searching for TeV γ-ray sources w.th w.DA, w. present a proj.ction of the one-year sensitivity of w.DA to TeV γ-ray sources from.TeVCat using an all-sky approach. Out of 128 TeVCat sources observable by w.DA up to a z.nith angle of 45°, w. estim.te that 42 w.uld be detectable in one year of observations at a m.dian energy of 1 TeV. m.st of them.are Galactic sources, and the extragalactic sources are Active Galactic Nuclei(AGN).

关键词： TeVγ-ray astronom. observational prospect LHAASO-w.DA

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q.ality assurance test and failure analysis of SiPm.arrays of GECAm.satellites

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Radiation Detection Technology and m.thods 2022年第1期6卷 35-42页

作者： D.L.z.ang m.Gao X.L.Sun X.q.Li z.H.An X.Y.w.n C.Cai z.Chang G.chen C.chen Y.Y.Du R.Gao K.Gong D.Y.Guo j.j.He D.j.Hou Y.G.Li C.Y.Li G.Li L.Li X.F.Li m.S.Li X.H.Liang X.j.Liu Y.q.Liu F.j.Lu H.Lu B.m.ng w.X.peng F.Shi H.wang j.z.wang Y.S.wang H.z.wang X.w.n S.Xiao S.L.Xiong Y.B.Xu Y.P.Xu S.Yang j.w.Yang Fan.z.ang S.N.z.ang C.Y.z.ang C.m.z.ang Fei z.ang X.Y.z.ao X.z.ou Institute of High Energy Physics CASBeijing 100049People’s Republic of China

Background The Gravitational w.ve high-energy Electrom.gnetic Counterpart All-sky m.nitor(GECAm.satellite developed a SiPm.based gam.a-ray detector to m.nitor the gravitational w.ve-related GRBs and guide subseq.ent observations in other w.velengths of *** As all the available SiPm.devices belong to com.ercial grade,q.ality assurance tests need to be perform.d in accordance w.th the aerospace *** In the SiPm.application of GECAm.q.ality assurance experim.nts w.re *** m.chanism.of the failure of SiPm.devices w.s analyz.d during the developm.nt *** Based on the q.ality assurance test results,the fnal pass rate of SiPm.array w.s 95%.Based on the failure analysis,it w.s found that a piece of SiPm.had a leakage channel after longtim. operation due to device *** According to the accum.lated experience,in the reliability test of SiPm.it is necessary to pay special attention to test the im.edance of each pin of SiPm.to ground and confrm.that the pow.r sw.tch state of SiPm.is controllable.

关键词： Gravitational w.ves Gam.a-ray detectors Silicon photom.ltipliers q.ality assurance test Failure analysis

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A biom.terial-based therapy for low.r lim. ischem.a using Sr/Si bioactive hydrogel that inhibits skeletal m.scle necrosis and enhances angiogenesis

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Bioactive m.terials 2023年第8期26卷 264-278页

作者： Ye Yuan z.aow.nbin z.ang Fandi m. chen Yang Yiren j.ao Enci wang Yuchong z.ang peng Lin chengkai Hu w.iguo Fu j.ang Chang Lixin wang Departm.nt of Vascular Surgery Zhongshan HospitalFudan University180 Fenglin RoadShanghai200032China Departm.nt of Vascular Surgery Zhongshan Xiamen HospitalFudan University668 JinhuRoadXiamen361015China j.int Centre of Translational m.dicine The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou325000China z.ej.ang Engineering Research Center for Tissue Repair m.terials Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhou325000China Shanghai Institute of Ceram.cs Chinese Academy of Sciences1295 Dingxi RoadShanghai200050China

m.scle necrosis and angiogenesis are tw. m.j.r challenges in the treatm.nt of low.r-lim. ischem.c *** this study,a triple-functional Sr/Si-containing bioceram.c/alginate com.osite hydrogel w.th sim.ltaneous bioactivity in enhancing angiogenesis,regulating inflam.ation,and inhibiting m.scle necrosis w.s designed to treat low.r-lim. ischem.c *** particular,sodium.alginate,calcium.silicate and strontium.carbonate w.re used to prepare inj.ctable hydrogels,w.ich w.s gelled w.thin 10 *** im.ortantly,this com.osite hydrogel sustainedly releases bioactive Sr^(2+)and SiO_(3)^(2-) ions w.thin 28 *** biological activity of the bioactive ions released from.the hydrogels w.s verified on HUVECs,Sm.s,C2C12 and Raw.264.7 cells in vitro,and the therapeutic effect of the hydrogel w.s confirm.d using C57BL/6 m.use m.del of fem.ral artery ligation in *** results show.d that the com.osite hydrogel stim.lated angiogenesis,developed new.collateral capillaries,and re-established the blood *** addition,the bioactive hydrogel directly prom.ted the expression of m.scle-regulating factors(m.oG and m.oD)to protect skeletal m.scle from.necrosis,inhibited m. polariz.tion,and prom.ted m. polariz.tion of m.crophages to reduce inflam.ation,thereby protecting skeletal m.scle cells and indirectly prom.ting *** results indicate that these bioceram.c/alginate com.osite bioactive hydrogels are effective biom.terials for treating hindlim. ischem.a and suggest that biom.terial-based approaches m.y have rem.rkable potential in treating ischem.c diseases.

关键词： Hindlim. ischem.c diseases Strontium.carbonate and calcium.silicate bioceram.c Bioactive hydrogel m.scle necrosis Angiogenesis

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