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Improving t.ermal conduct.vit.0}of mg-Si-Zn-Cu alloy.t.rough minimizing elect.on scat.ering at.phase int.rface

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j.urnal of magnesium and Alloy. 2024年第9期12卷 3717-3728页

作者： lu chen Shulin lü j.any. li Wei guo Shusen wu St.t. Key.lab of mat.rials processing and Die&mould t.chnology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074PR China

t.e primary.cause of t.e decrease in t.ermal conduct.vit.0}of convent.onal t.ermal conduct.ve magnesium alloy. is elect.on scat.ering brought.on by.solut. ***,t.e impact.of phase int.rface on t.ermal conduct.vit.0}of magnesium alloy. is usually.*** st.dy.has developed a.m.-Si-Zn-Cu alloy.wit. high t.ermal conduct.vit.0}t.at.is dist.nguished by.having a very.low solut. at.m cont.nt.and a significant.number of phase *** t.ermal conduct.vit.0}of t.e mg^(-1).38Si-0.5Zn-0.5Cu alloy.raises from it. unt.eat.d value of 133.2 W/(m·K)t. 142.2 W/(m·K),which is 91%of t.e t.ermal conduct.vit.0}of pure *** is accomplished by.subj.ct.ng t.e alloy.t. bot. 0.8wt.Ce modificat.on and t. heat.*** morphology.of eut.ct.c mg_(2)Si phase is changed by.Ce modificat.on and heat.t.ea.m.nt.and as a result.t.e scat.ering of elect.ons at.t.e mg_(2)Si/mg int.rface is reduced,result.ng in increase of t.e alloy.s t.ermal conduct.vit.0}

关键词： t.ermal conduct.vit. Ce modificat.on mg_(2)Si heat.t.ea.m.nt

Geomet.ical reconst.uct.on of fluorescence event. observed by.t.e lhAASO experiment

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Chinese phy.ics 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.Bast.eri 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.DEt.rre 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.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.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.m.sood W.mit.humsiri t.mont.ruli y.C.Nan B.y..pang p.pat.arakij.anich 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 y..V.St.nkin V.St.panov Q.N.Sun x.N.Sun Z.B.Sun p.h.t.t.m Z.B.t.ng W.W.t.an 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.x.n y.xing D.l.x. R.x.xu l.x.e D.h.y.n C.W.y.ng F.F.y.ng j.y.y.ng l.l.y.ng m.j.y.ng R.Z.y.ng S.B.y.ng y.h.y.o Z.G.y.o y.m.y. l.Q.y.n N.y.n x.h.y.u Z.y.y.u y.h.y. Q.y.an 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.laborat.ry.of part.cle Ast.ophy.cs&Experiment.l phy.ics Division&Comput.ng Cent.r Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Universit.0}of Chinese Academy.of Sciences Beijing 100049China t.ANFU Cosmic Ray.Research Cent.r ChengduSichuanChina St.t. Key.laborat.ry.of paricle Det.ct.on and Elect.onics China Universit.0}of Science and t.chnology.of China HefeiAnhui 230026China Depart.ent.of Engineering phy.ics Tsinghua UniversityBeijing 100084China Nat.onal Ast.onomical Observat.ries Chinese Academy of SciencesBeijing 100101China Nat.onal Space Science Cent.r Chinese Academy of SciencesBeijing 100190China School of phy.ics Peking UniversityBeijing 100871China Cent.r for Ast.ophy.ics Guangzhou UniversityGuangzhouGuangdong 510006China School of phy.ics and Ast.onomy.School of phy.ics(Guangzhou) Sun Yat-sen UniversityZhuhaiGuangdong 519000China School of phy.ical Science and t.chnology Guangxi UniversityNanningGuangxi 530004China hebei Normal Universit. ShijiazhuangHebei 050024China School of phy.ics and microelect.onics Zhengzhou UniversityZhengzhouHenan 450001China School of Ast.onomy.and Space Science Nanjing UniversityNanjingJiangsu 210023China Key.laborat.ry.of Dark mat.er and Space Ast.onomy Purple Mountain ObservatoryChinese Academy of SciencesNanjingJiangsu 210023China Inst.t.t. of Front.er and Int.rdisciplinary.Science Shandong UniversityQingdaoShandong 266237China Key.laborat.ry.for Research in Gal.x.es and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China t.ung-Dao lee Inst.t.t.&School of phy.ics and Ast.onomy Shanghai Jiao Tong UniversityShanghai 200240China School of phy.ical Science and t.chnology Southwest Jiaotong UniversityChengduSichuan 610031China College of phy.ics Sichuan UniversityChengduSichuan 610065China Key.laborat.ry.of Cosmic Ray.(t.bet.Universit.0} Ministry of EducationLhasaTibet 850000China School of phy.ics and t.chnology Wuhan UniversityWuhanHubei 430072Ch

t.e lhAASO-WFCt. experiment.which a.m. t. observe cosmic ray. in t.e sub-EeV range using t.e fluorescence t.chnique,uses a new generat.on of high-performance *** ensure t.at.t.e experiment.has ex-cellent.det.ct.on capabilit.1}associat.d wit. t.e measurement.of t.e energy.spect.um,t.e primary.composit.on of cosmic ray.,and so on,an accurat. geomet.ical reconst.uct.on of air-shower event. is *** paper de-scribes t.e development.and t.st.ng of geomet.ical reconst.uct.on for st.reo viewed event. using t.e WFCt.(Wide Field of view Cherenkov/Fluorescence t.lescope Array.*** approaches,which t.ke full advant.ge oft.e WFCt. *** *** is t.e st.reo-angular met.od,which uses t.e point.ng of t.iggered Sipms in t.e shower t.aj.ct.ry.and t.e ot.er is t.e st.reo-t.ming met.od,which uses t.e t.iggering t.me of t.e fired *** result. show t.at.bot. met.ods have good geomet.ical resolut.on:t.e resolut.on of t.e st.reo-t.ming met.od is slight.y.bet.er t.an t.e st.reo-angular met.od because t.e resolut.on of t.e lat.er is slight.y.limit.d by.t.e shower t.ack lengt..

关键词： cosmic ray fluorescence t.lescope st.reo observat.on geomet.ical reconst.uct.on

St.F concept.al design report.(Volume 1): phy.ics & det.ct.r

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Front.ers of phy.ics 2024年第1期19卷 1-154页

作者： m.Achasov x.C.Ai l.p.An R.Alibert. Q.An x.Z.Bai y.Bai O.Bakina A.Barny.kov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomy.gkov A.Bondar I.Boy.o Z.h.Bu F.m.Cai h.Cai j.j.Cao Q.h.Cao x.Cao Z.Cao Q.Chang K.t.Chao D.y.chen h.chen h.x.chen j.F.chen K.chen l.l.chen p.chen S.l.chen S.m.chen S.chen S.p.chen W.chen x.chen x.F.chen x.R.chen y.chen y.Q.chen h.y.cheng j.cheng S.cheng t.G.cheng j.p.Dai l.y.Dai x.C.Dai D.Dedovich A.Denig I.Denisenko j.m.Dias D.Z.Ding l.y.Dong W.h.Dong V.Druzhinin D.S.Du y.j.Du Z.G.Du l.m.Duan D.Epifanov y.l.Fan S.S.Fang Z.j.Fang G.Fedot.vich C.Q.Feng x.Feng y.t.Feng j.l.Fu j.Gao y.N.Gao p.S.Ge C.Q.Geng l.S.Geng A.Gilman l.Gong t.Gong B.Gou W.Gradl j.l.Gu A.Guevara l.C.Gui A.Q.guo F.K.guo j.C.guo j.guo y.p.guo Z.h.guo A.Guskov K.l.han l.han m.han x.Q.hao j.B.he S.Q.he x.G.he y.l.he Z.B.he Z.x.heng B.l.hou t.j.hou y.R.hou C.y.hu h.m.hu K.hu R.j.hu W.h.hu x.h.hu y.C.hu j.hua G.S.huang j.S.huang m.huang Q.y.huang W.Q.huang x.t.huang x.j.huang y.B.huang y.S.huang N.hüsken V.Ivanov Q.p.j. j.j.j.a S.j.a Z.K.j.a h.B.j.ang j.j.ang S.Z.j.ang j.B.j.ao Z.j.ao h.j.j.ng x.l.Kang x.S.Kang B.C.Ke m.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin y.lei E.levichev C.h.li C.li D.y.li F.li G.li G.li h.B.li h.li h.N.li h.j.li h.l.li j.m.li j.li l.li l.li l.y.li N.li p.R.li R.h.li S.li t.li W.j.li x.li x.h.li x.Q.li x.h.li y.li y.y.li Z.j.li h.liang j.h.liang y.t.liang G.R.liao l.Z.liao y.liao C.x.lin D.x.lin x.S.lin B.j.liu C.W.liu D.liu F.liu G.m.liu h.B.liu j.liu j.j.liu j.B.liu K.liu K.y.liu K.liu l.liu Q.liu S.B.liu t.liu x.liu y.W.liu y.liu y.l.liu Z.Q.liu Z.y.liu Z.W.liu I.logashenko y.long C.G.lu j.x.lu N.lu Q.F.lü y.lu y.lu Z.lu p.lukin F.j.luo t.luo x.F.luo y.h.luo h.j.ly. x.R.ly. j.p.ma p.ma y.ma y.m.ma F.maas S.malde D.mat.ienko Z.x.meng R.mit.hell A.Nefediev y.Nefedov S.l.Olsen Q.Ouy.ng p.pakhlov G.pakhlova x.pan y.pan E.passemar y.p.pei h.p.peng l.peng x.y.peng x.j.peng K.pet.rs S.pivovarov E.py.t. B.B.Qi y.Q.Qi W.B.Qian y.Qian C.F.Qiao j.j.Qin j.j.Qin l.Q.Qin x.S.Qin t.l.Qiu j.Rademacker C.F.Redmer h.y.Sang Anhui Universit. Hefei 230039China Beihang Universit. Beijing 100191China Budker Inst.t.t. of Nuclear phy.ics Novosibirsk 630090Russia CAS Key.laborat.ry.of t.eoret.cal phy.ics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish laborat.ry University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Cent.al China Normal Universit. Wuhan 430079China Cent.al Sout. Universit. Changsha 410083China China Universit.0}of Geosciences Wuhan 430074China China Universit.0}of mining and t.chnology Xuzhou 221116China École poly.echnique Fédérale de lausanne(EpFl) LausanneSwitzerland Fudan Universit. Shanghai 200433China Goet.e Universit.0}Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal Universit. Guilin 541004China Guangxi Uninversit. Nanning 530004China hangzhou Inst.t.t. for Advanced St.dy UCASHangzhou 310024China hebei Normal Universit. Shijiazhuang 050024China hebei Universit. Baoding 071002China hefei Universit.0}of t.chnology Hefei 230601China helmholt. Inst.t.t. mainz Staudinger Weg 18D-55099 MainzGermany henan Normal Universit. Xinxiang 453007China henan Universit. Kaifeng 475004China high Energy.phy.ics Cent.r Chung-Ang UniversitySeoul 06974Korea higher School of Economy.11 pokrovsky.Bulvar Moscow 109028Russia huangshan Universit. Huangshan 245000China hubei Universit.0}of Aut.mot.ve t.chnology Shiyan 442002China hunan Normal Universit. Changsha 410081China hunan Universit.0}of Science and t.chnology Xiangtan 411201China hunan Universit. Changsha 410082China Indiana Universit. BloomingtonIndiana 47405USA Inner mongolia Universit. Hohhot 010021China Inst.t.t. of Advanced Science Facilit.es Shenzhen 518107China Inst.t.t. of high Energy.phy.ics Chinese Academy of SciencesBeijing 100049China Inst.t.t. of modern phy.ics Chinese Academy of SciencesLanzhou 730000China Inst.t.t. of phy.ics Academia SinicaTaipeiTaiwan 11529China Inst.t.t. of t.eoret.cal phy.ics Chinese Academy of SciencesBeijing 100190China j.lin Universit. Changch

t.e superτ-cha.m.facilit.1}St.F)is an elect.on–posit.on collider proposed by.t.e Chinese part.cle phy.ics *** is designed t. operat. in a cent.r-of-mass energy.range from 2 t. 7 GeV wit. a peak luminosit.1}of 0.5×10^(35) cm^(–2)·s^(–1) or *** St.F will produce a dat. sample about.a fact.r of 100 larger t.an t.at.of t.e present.-cha.m.fact.ry.t.e BEpCII,providing a unique plat.orm for exploring t.e asy.met.y.of mat.er-ant.mat.er(charge-parit.1}violat.on),in-dep.h.st.dies of t.e int.rnal st.uct.re of hadrons and t.e nat.re of non-pert.rbat.ve st.ong int.ract.ons,as well as searching for exot.c hadrons and phy.ics bey.nd t.e St.ndard *** St.F proj.ct.in China is under development.wit. an ext.nsive R&D *** document.present. t.e phy.ics opport.nit.es at.t.e St.F,describes concept.al designs of t.e St.F det.ct.r sy.t.m,and discusses fut.re plans for det.ct.r R&D and phy.ics case st.dies.

关键词： elect.on–posit.on collider t.u-cha.m.region high luminosit. St.F det.ct.r concept.al design

Observat.on of t.e Crab Nebula wit. lhAASO-Km2A−a performance st.dy

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Chinese phy.ics 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.Bast.eri 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'Et.orre 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.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 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.m.sood W.mit.humsiri t.mont.ruli y.C.Nan B.y.pang p.pat.arakij.anich 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 y..V.St.nkin V.St.panov Q.N.Sun x.N.Sun Z.B.Sun p.h.t.t.m Z.B.t.ng W.W.t.an 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.x.n y.xing D.l.x. R.x.xu l.x.e D.h.y.n C.W.y.ng F.F.y.ng j.y.y.ng l.l.y.ng m.j.y.ng R.Z.y.ng S.B.y.ng y.h.y.o Z.G.y.o y.m.y. l.Q.y.n N.y.n x.h.y.u Z.y.y.u y.h.y. Q.y.an 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.laborat.ry.of part.cle Ast.ophy.cs&Experiment.l phy.ics Division&Comput.ng Cent.r Institute of High Energy PhysicsChinese Academy of Sciences100049 BeijingChina Universit.0}of Chinese Academy.of Sciences 100049 BeijingChina t.ANFU Cosmic Ray.Research Cent.r ChengduSichuanChina St.t. Key.laborat.ry.of part.cle Det.ct.on and Elect.onics China Universit.0}of Science and t.chnology.of China 230026 HefeiAnhuiChina Depart.ent.of Engineering phy.ics Tsinghua University100084 BeijingChina Nat.onal Ast.onomical Observat.ries Chinese Academy of Sciences100101 BeijingChina Nat.onal Space Science Cent.r Chinese Academy of Sciences100190 BeijingChina School of phy.ics Peking University100871 BeijingChina Cent.r for Ast.ophy.ics Guangzhou University510006 GuangzhouGuangdongChina School of phy.ics and Ast.onomy.School of phy.ics(Guangzhou) Sun Yat-sen University519000 ZhuhaiGuangdongChina School of phy.ical Science and t.chnology Guangxi University530004 NanningGuangxiChina hebei Normal Universit. 050024 ShijiazhuangHebeiChina School of phy.ics and microelect.onics Zhengzhou University450001 ZhengzhouHenanChina School of Ast.onomy.and Space Science Nanjing University210023 NanjingJiangsuChina Key.laborat.ry.of Dark mat.er and Space Ast.onomy Purple Mountain ObservatoryChinese Academy of Sciences210023 NanjingJiangsuChina Inst.t.t. of Front.er and Int.rdisciplinary.Science Shandong University266237 QingdaoShandongChina Key.laborat.ry.for Research in Gal.x.es and Cosmology Shanghai Astronomical ObservatoryChinese Academy of Sciences200030 ShanghaiChina t.ung-Dao lee Inst.t.t.&School of phy.ics and Ast.onomy Shanghai Jiao Tong University200240 ShanghaiChina School of phy.ical Science and t.chnology.School of Informat.on Science and t.chnology Southwest Jiaotong University610031 ChengduSichuanChina College of phy.ics Sichuan University610065 ChengduSichuanChina Key.laborat.ry.of Cosmic Ray.(t.bet.Universit.0} Ministry of Education850000 LhasaTibetChina School of phy.ics and t.c

A sub-array.of t.e large high Alt.t.de Air Shower Observat.ry.lhAASO),Km2A is mainly.designed t. observe a large fract.on of t.e nort.ern sky.t. hunt.for γ-ray.sources at.energies above 10 *** t.ough t.e det.ct.r const.uct.on is st.ll underway.half of t.e Km2A array.has been operat.ng st.bly.since t.e end of *** t.is paper,we present.t.e Km2A dat. analy.is pipeline and t.e first.observat.on of t.e Crab Nebula,a st.ndard candle in very.high energy.γ-ray.*** det.ct.γ-ray.signals from t.e Crab Nebula in bot. energy.ranges of 10-100 t.V and>100 t.V wit. high significance,by.analy.ing t.e Km2A dat. of 136 live day. bet.een December 2019 and may.*** t.e observat.ons,we t.st.t.e det.ct.r performance,including angular resolut.on,point.ng accuracy.and cosmic-ray.background rej.ct.on *** energy.spect.um of t.e Crab Nebula in t.e energy.range 10-250 t.V fit. well wit. a single power-law funct.on dN/dE=(1.13±0.05st.t.0.08sy.)×10^(-14).(E/20 t.V)-309±0.06st.t.0.02sy.cm^(-2) s^(-1) t.V^(-1).It.is consist.nt.wit. previous measurement. by.ot.er *** opens a new window of γ-ray.ast.onomy.above 0.1 peV t.rough which new ult.ahigh-energy.γ-ray.phenomena,such as cosmic peVat.ons,might.be discovered.

关键词： γ-ray Crab Nebula ext.nsive air showers cosmic ray.

measurement.of t.e int.grat.d luminosit.es of cross-sect.on scan dat. samples around t.eψ(3770)mass region

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Chinese phy.ics C 2018年第6期42卷 1-8页

作者： m. Ablikim m. N. Achasov S. a.m.d m. Albrecht.m. Alekseev A. Amoroso F. F. An Q. An y. Bai O. Bakina R. Baldini Ferroli y. Ban K. Begzsuren D. W. Bennet. j. V. Bennet. N. Berger m. Bert.ni D. Bet.oni F. Bianchi E. Boger I. Boy.o R. A. Briere h. Cai x. Cai O. Cakir A. Calcat.rra G. F. Cao S. A. Cet.n j. Chai j. F. Chang W. l. Chang G. Chelkov G. chen h. S. chen j. C. chen m. l. chen p. l. chen S. j. chen x. R. chen y. B. chen x. K. Chu G. Cibinet.o F. Cossio h. a. Dai, j. F. Dai A. Dbey.si D. Dedovich Z. y. Deng A. Denig I. Deny.enko m. Dest.fanis F. De mori y. Ding C. Dong j. Dong l. y. Dong m. y. Dong Z. l. Dou S. x. Du p. F. nuan j. Fang S. S. Fang y. Fang R. Farinelli l. Fava S. Fegan F. Feldbauer G. Felici C. Q. Feng E. Fioravant. m. Frit.ch C. D. Fu Q. Gao x. l. Gao y. Gao, y. G. Gao Z. Gao B. Garillon I. Garzia A. Gilman K. Goet.en l. Gong W. x. Gong W. Gradl m. Greco l. m. Gu m. h. Gu y. t. Gu A. q. guo l. B. guo R. p. guo y. F. guo A. Guskov Z. haddadi S. han x. Q. hao F. A. harris Z. l. he x. O. he F. h. heinsius t. held y. K. heng t. holt.ann Z. l. hou h. m. hu j. F. gu t. hu y. hu G. S. huang j. S. huang x. t. huang x. Z. huang Z. l. guang t. hussain W. Ikegami Andersson m Irshad Q. j. Q. p. j. x. B. j. x. l. j. x. S. j.ang x. y. j.ang j. B. j.ao Z. j.ao D. p. j.n S. j.n y. j.n t. j.hansson A. j.lin N. Kalant.r-Nay.st.naki x. S. Kang m. Kavat.y.k B. C. Ke t. Khan A. Khoukaz p. Kiese R. Kliemt.l. Koch O. B. Kolcu B. Kopf m. Kornicer m. Kuemmel m. Kuessner A. Kupsc m. Kurt. W. Kiihn j. S. lange m. lara p. larin l. lavezzi S. leiber h. leit.ofi C. li cheng li D. m. li F. li F. y. li G. li h. B. li h. j. li j. C. li j. W. li K. j. li Kang li Ke li lei li p. l. li p. R. li Q. y. li t. li W. D. li W. G. li x. l. li x. N. li x. Q. li Z. B. li h. liang y. F. liang y. t. liang G. R. liao l. Z. liao j. libby.C. x. lin D. x. lin S. liu B. j. liu C. x. liu D. liu D. y. liu F. h. liu Fang liu Feng liu h. B. liu h. l liu h. m. liu huanhuan liu huihui liu j. B. liu j. y. liu K. liu K. y. liu Ke liu l. D. liu Q. liu S B. Y. Zhang144 C. C. Zhang1D. H. Zhang1 H. H. Zhang45H. Y. Zhang144 J. Zhang151 J. L. Zhang65 J. Q. Zhang4 J. W. Zhang1 J. Y. Zhang1 J. Z. Zhang151 K. Zhang151 L. Zhang46 S. F. Zhang35 T. J. Zhang3975 X. Y. Zhang38 Y. Zhang4457 Y. H. Zhang144 Y. T. Zhang4557 Yang Zhang1 Yao Zhang1 Yu Zhang51 Z. H. Zhang6 Z. P. Zhan57Z. Y. Zhang64 G. Zhao1J. W. Zhao144 J. Y. Zhao151 J. Z. Zhao144 Lei Zhao4457 Ling Zhao1 M. G. Zhao35 Q. Zhao1 S. J. Zhao67 T. C. Zhao1 Y. B. Zhao144 Z. G. Zhao4457 A. Zhemehugov2869 B. Zheng58J. P. Zheng144 W. J. Zheng38 Y. H. Zheng51B. Zhong33 L. Zhou144 Q. Zhou151 X. Zhou64 X. K. Zhou4457 X. R. Zhou4457 X. Y. Zhou1 A. N. Zhu151 J. Zhu35 J. Zhu45 K. Zhu1 K. J. Zhu1 S. Zhu1 S. H. Zhu56 X. L. Zhu46 Y. C. Zhu4457 Y. S. Zhu151 Z. A. Zhu151 J. Zhuang144B. S. Zou1 J. H. Zou1 （ 1 Institute of High Energy Physics Beijing 100049 China Beihang Universit. Beijing 100191 China Beij.ng Inst.t.t. of pet.ochemical t.chnology Beijing 102617 China Bochum Ruhr-Universit. D-44780 Bochum Germany Carnegie mellon Universit. Pittsburgh Pennsylvania 15213 USA Cent.al China Normal Universit. Wuhan 430079 China China Cent.r of Advanced Science and t.chnology Beijing 100190 China COmSAt. Inst.t.t. of Informat.on t.chnology Lahore Defence Road Off Raiwind Road 54000 Lahore Pakistan G.I. Budker Inst.t.t. of Nuclear phy.ics SB RAS （BINp） Novosibirsk 630090 Russia GSI helmholt.cent.e for heavy.Ion Research Gmbh D-64291 Darmstadt Germany Guangxi Normal Universit. Guilin 541004 China Guangxi Universit. Nanning 530004 China hangzhou Normal Universit. Hangzhou 310036 China helmholt. Inst.t.t. mainz JohannwJoachim-Becher-Weg 45 D-55099 Mainz Germany henan Normal Universit. Xinxiang 453007 China henan Universit.0}of Science and t.chnology Luoyang 471003 China huangshan College Huangshan 245000 China hunan Normal Universit. Changsha 410081 China hunan Universit. Changsha 410082 China Indian Inst.t.t. of t.c

t. invest.gat. t.e nat.re of t.e Ψ（3770） resonance and t. measure t.e cross sect.on for e^＋e^-→DD, a cross-sect.on scan dat. sample, dist.ibut.d among 41 cent.r-of-mass energy.point. from 3.73 t. 3.89 GeV, was t.ken wit. t.e BESIII det.ct.r operat.d at.t.e BEpCII collider in t.e y.ar 2010. By.analy.ing t.e large angle Bhabha scat.ering event., we measure t.e int.grat.d luminosit.0}of t.e dat. sample at.each cent.r-of-mass energy.point. t.e t.t.l int.grat.d luminosit.0}of t.e dat. sample is 76.16±0.04±0.61 pb^-1, where t.e first.uncert.int.0}is st.t.st.cal and t.e second sy.t.mat.c.

关键词： Bhabha scat.ering event. int.grat.d luminosit.0}BESⅢ

measurement. of t.e cent.r-of-mass energies of e^(+)e^(-)collisions at.BESIII

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Chinese phy.ics C 2021年第10期45卷 7-15页

作者： m.Ablikim m.N.Achasov p.Adlarson S.a.m.d m.Albrecht.R.Alibert. A.Amoroso m.R.An Q.An x.h.Bai y.Bai O.Bakina R.Baldini Ferroli I.Balossino y.Ban K.Begzsuren N.Berger m.Bert.ni D.Bet.oni F.Bianchi j.Bloms A.Bort.ne I.Boy.o R.A.Briere h.Cai x.Cai A.Calcat.rra G.F.Cao N.Cao S.A.Cet.n j.F.Chang W.l.Chang G.Chelkov D.y.chen G.chen h.S.chen m.l.chen S.j.chen x.R.chen y.B.chen Z.j.chen W.S.cheng G.Cibinet.o F.Cossio x.F.Cui h.l.Dai x.C.Dai A.Dbey.si R.E.de Boer D.Dedovich Z.y.Deng A.Denig I.Deny.enko m.Dest.fanis F.De mori y.Ding C.Dong j.Dong l.y.Dong m.y.Dong x.Dong S.x.Du y.l.Fan j.Fang S.S.Fang y.Fang R.Farinelli l.Fava F.Feldbauer G.Felici C.Q.Feng j.h.Feng m.Frit.ch C.D.Fu y.Gao y.Gao y.Gao y.G.Gao I.Garzia p.t.Ge C.Geng E.m.Gersabeck A Gilman K.Goet.en l.Gong W.x.Gong W.Gradl m.Greco l.m.Gu m.h.Gu y.t.Gu C.y.Guan A.Q.guo l.B.guo R.p.guo y.p.guo A.Guskov t.t.han W.y.han x.Q.hao F.A.harris K.l.he F.h.heinsius C.h.heinz t.held y.K.heng C.herold m.himmelreich t.holt.ann G.y.hou y.R.hou Z.l.hou h.m.hu j.F.hu t.hu y.hu G.S.huang l.Q.huang x.t.huang y.p.h.ang Z.huang t.hussain N husken W.Ikegami Andersson W.Imoehl m.Irshad S.j.eger S.j.nchiv Q.j. Q.p.j. x.B.j. x.l.j. y.y.j. h.B.j.ang x.S.j.ang j.B.j.ao Z.j.ao S.j.n y.j.n m.Q.j.ng t.j.hansson N.Kalant.r-Nay.st.naki x.S.Kang R.Kappert.m.Kavat.y.k B.C.Ke I.K.Keshk A.Khoukaz p.Kiese R.Kiuchi R.Kliemt.l.Koch O.B.Kolcu B.Kopf m.Kuemmel m.Kuessner A.Kupsc m.G.Kurt. W.Kuhn j.j.lane j.S.lange p.larin A.lavania l.lavezzi Z.h.lei h.leit.off m.lellmann t.lenz C.li C.h.li cheng li D.m.li F.li G.li h.li h.li h.B.li h.j.li j.l.li j.Q.li j.S.li Ke li l.K.li lei li p.R.li S.y.li W.D.li W.G.li x.h.li x.l.li xiaoy. li Z.y.li h.liang h.liang h.liang y.F.liang y.t.liang G.R.liao l. Z. liao j.libby.C.x.lin B.j.liu C.x.liu D.liu F.h.liu Fang liu Feng liu h.B.liu h.m.liu huanhuan liu huihui liu j.B.liu j.l.liu j.y.liu K.liu K.y.liu l.liu m.h.liu p.l.liu Q.liu Q.liu S.B.liu Shuai liu t.liu W.m.liu x.liu y.liu y.B.liu Z.A.liu Z.Q.liu x.C.lou F.x.lu h.j.lu j.D.lu j.G.lu x.l.lu y.lu y.p.lu C.l.luo Inst.t.t. of high Energy.phy.ics Beijing 100049China Beihang Universit. Beijing 100191China Beij.ng Inst.t.t. of pet.ochemical t.chnology Beijing 102617China Bochum Ruhr-Universit. D-44780 BochumGermany Carnegie mellon Universit. PittsburghPennsylvania 15213USA Cent.al China Normal Universit. Wuhan 430079China China Cent.r of Advanced Science and t.chnology Beijing 100190China COmSAt. Universit.0}Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan Universit. Shanghai 200443China G.I.Budker Inst.t.t. of Nuclear phy.ics SB RAS(BINp) Novosibirsk 630090Russia GSI helmholt.cent.e for heavy.Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal Universit. Guilin 541004China Guangxi Universit. Nanning 530004China hangzhou Normal Universit. Hangzhou 310036China helmholt. Inst.t.t. mainz Staudinger Weg 18D-55099 MainzGermany henan Normal Universit. Xinxiang 453007China henan Universit.0}of Science and t.chnology Luoyang 471003China huangshan College Huangshan 245000China hunan Normal Universit. Changsha 410081China hunan Universit. Changsha 410082China Indian Inst.t.t. of t.chnology.madras Chennai 600036India Indiana Universit. BloomingtonIndiana 47405USA INFN laborat.ri Nazionali di Frascat. INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN laborat.ri Nazionali di Frascat. INFN Sezione di PerugiaI-06100PerugiaItaly INFN laborat.ri Nazionali di Frascat. University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly 25Institute of Modern PhysicsLanzhou 730000China Inst.t.t. of modern phy.ics Lanzhou 730000China Inst.t.t. of phy.ics and t.chnology Peace Ave.54BUlaanbaatar 13330Mongolia j.lin Universit. Changchun 130012China j.hannes Gut.nberg Universit.0}of mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany j.int.Inst.t.t. for Nuclear Research 141980 DubnaMoscow regionRussia j.st.s-liebig-Universit.et.Giessen II.Physikali

During t.e 2016-17 and 2018-19 running periods,t.e BESIII experiment.collect.d 7.5 fb of e^(+)e^(-)collision dat. at.cent.r-of-mass energies ranging from 4.13 t. 4.44 *** dat. samples are primarily.used for t.e st.dy.of excit.d cha.m.nium and cha.m.niumlike *** analy.ing t.e di-muon process e^(+)e^(-)→(γISR=FSR)μ^(+)μ^(-),we measure t.e cent.r-of-mass energies of t.e dat. samples wit. a precision of 0.6 *** a run-by.run st.dy.we find t.at.t.e cent.r-of-mass energies were st.ble t.roughout.most.of t.e dat.-collect.on period.

关键词： cent.r-of-mass energy e^(+)e^(-) annihilat.on BESIII

St.dy.of BESIII t.igger efficiencies wit. t.e 2018 j.ψ dat.

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Chinese phy.ics C 2021年第2期45卷 48-55页

作者： m.Ablikim m.N.Achasov p.Adlarson S.a.m.d m.Albrecht.R.Alibert. A.Amoroso m.R.An Q.An x.h.Bai y.Bai O.Bakina R.Baldini Ferroli I.Balossino y.Ban K.Begzsuren N.Berger m.Bert.ni D.Bet.oni F.Bianchi j.Bloms A.Bort.ne I.Boy.o R.A.Briere h.Cai x.Cai A.Calcat.rra G.F.Cao N.Cao S.A.Cet.n j.F.Chang W.l.Chang G.Chelkov D.y.chen G.chen h.S.chen m.l.chen S.j.chen x.R.chen y.B.chen Z.j.chen W.S.cheng G.Cibinet.o F.Cossio x.F.Cui h.l.Dai x.C.Dai A.Dbey.si R.E.de Boer D.Dedovich Z.y.Deng A.Denig I.Deny.enko m.Dest.fanis F.De mori y.Ding C.Dong j.Dong l.y.Dong m.y.Dong x.Dong S.x.Du y.l.Fan j.Fang S.S.Fang y.Fang R.Farinelli l.Fava F.Feldbauer G.Felici C.Q.Feng j.h.Feng m.Frit.ch C.D.Fu y.Gao y.Gao y.Gao y.G.Gao I.Garzia p.t.Ge C.Geng E.m.Gersabeck A Gilman K.Goet.en l.Gong W.x.Gong W.Gradl m.Greco l.m.Gu m.h.Gu S.Gu y.t.Gu C.y.Guan A.Q.guo l.B.guo R.p.guo y.p.guo A.Guskov t.t.han W.y.han x.Q.hao F.A.harris h hüsken K.l.he F.h.heinsius C.h.heinz t.held y.K.heng C.herold m.himmelreich t.holt.ann y.R.hou Z.l.hou h.m.hu j.F.hu t.hu y.hu G.S.huang l.Q.huang x.t.huang y.p.h.ang Z.huang t.hussain W.Ikegami Andersson W.Imoehl m.Irshad S.j.eger S.j.nchiv Q.j. Q.p.j. x.B.j. x.l.j. h.B.j.ang x.S.j.ang j.B.j.ao Z.j.ao S.j.n y.j.n t.j.hansson N.Kalant.r-Nay.st.naki x.S.Kang R.Kappert.m.Kavat.y.k B.C.Ke I.K.Keshk A.Khoukaz p.Kiese R.Kiuchi R.Kliemt.l.Koch O.B.Kolcu B.Kopf m.Kuemmel m.Kuessner A.Kupsc m.G.Kurt. W.Kühn j.j.lane j.S.lange p.larin A.lavania l.lavezzi Z.h.lei h.leit.off m.lellmann t.lenz C.li C.h.li cheng li D.m.li F.li G.li h.li h.li h.B.li h.j.li j.l.li j.Q.li j.S.li Ke li l.K.li lei li p.R.li S.y.li W.D.li W.G.li x.h.li x.l.li Z.y.li h.liang h.liang h.liang y.F.liang y.t.liang l.Z.liao j.libby.C.x.lin B.j.liu C.x.liu D.liu F.h.liu Fang liu Feng liu h.B.liu h.m.liu huanhuan liu huihui liu j.B.liu j.l.liu j.y.liu K.liu K.y.liu Ke liu l.liu m.h.liu p.l.liu Q.liu Q.liu S.B.liu Shuai liu t.liu W.m.liu x.liu y.liu y.B.liu Z.A.liu Z.Q.liu x.C.lou F.x.lu h.j.lu j.D.lu j.G.lu x.l.lu y.lu y.p.lu C.l.luo m.x.luo b p.W.luo t.luo x.l.luo S Inst.t.t. of high Energy.phy.ics Beijing 100049China Beihang Universit. Beijing 100191China Beij.ng Inst.t.t. of pet.ochemical t.chnology Beijing 102617China Bochum Ruhr-Universit. D-44780 BochumGermany Carnegie mellon Universit. PittsburghPennsylvania 15213USA Cent.al China Normal Universit. Wuhan 430079China China Cent.r of Advanced Science and t.chnology Beijing 100190China COmSAt. Universit.0}Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan Universit. Shanghai 200443China GIBudker Inst.t.t. of Nuclear phy.ics SB RAS(BINp) Novosibirsk 630090Russia GSI helmholt.cent.e for heavy.Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal Universit. Guilin 541004China Guangxi Universit. Nanning 530004China hangzhou Normal Universit. Hangzhou 310036China helmholt. Inst.t.t. mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany henan Normal Universit. Xinxiang 453007China henan Universit.0}of Science and t.chnology Luoyang 471003China huangshan College Huangshan 245000China hunan Normal Universit. Changsha 410081China hunan Universit. Changsha 410082China Indian Inst.t.t. of t.chnology.madras Chennai 600036India Indiana Universit. BloomingtonIndiana 47405USA (A)INFN laborat.ri Nazionali di Frascat. I-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly (A)INFN Sezione di Ferrara I-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Inst.t.t. of modern phy.ics Lanzhou 730000China Inst.t.t. of phy.ics and t.chnology Peace Ave54BUlaanbaatar 13330Mongolia j.lin Universit. Changchun 130012China j.hannes Gut.nberg Universit.0}of mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany j.int.Inst.t.t. for Nuclear Research 141980 DubnaMoscow regionRussia j.st.s-liebig-Universit.et.Giessen IIPhysikalisches InstitutHeinrich-Buff-Ring 16D-35392GiessenGermany KVI-CARt University of GroningenNL-9747 AA GroningenThe Netherlands lanzhou Universit. Lanzhou 730000China liaoning Normal Unive

Using a dedicat.d dat. sample t.ken in 2018 on t.e j.ψpeak,we perform a det.iled st.dy.of t.e t.igger efficiencies of t.e BESIII *** efficiencies are det.rmined from t.ree represent.t.ve phy.ics processes,namely.Bhabha scat.ering,dimuon product.on and generic hadronic event. wit. charged *** combined efficiency.of all act.ve t.iggers approaches 100%in most.cases,wit. uncert.int.es small enough not.t. affect.most.phy.ics analy.es.

关键词： BESIII t.igger efficiency Bhabha dimuon hadronic event.

line-of-shower t.igger met.od t. lower energy.t.reshold for GRB det.ct.on using lhAASO-WCDA

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Radiat.on Det.ct.on t.chnology.and met.ods 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.Bast.eri 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 Danzengluobu D.della Volpe B.D’Et.orre piazzoli 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.ma l.l.ma x.h.ma j.R.mao a.m.sood W.mit.humsiri t.mont.ruli y.C.Nan B.y.pang p.pat.arakij.anich Z.y.pei m.y.Qi D.Ruffolo V.Rulev A.Sáiz l.Shao O.Shchegolev x.D.Shen j.R.Shi h.C.Song y..V.St.nkin V.St.panov Q.N.Sun x.N.Sun Z.B.Sun p.h.t.t.m Z.B.t.ng W.W.t.an B.D.Wan C.Wang h.Wang h.G.Wang j.C.Wang j.S.Wang l.p.Wang l.y.Wan R.N.Wang W.Wang W.Wang x.G.Wang x.j.Wan x.y.Wang y.D.Wan y.j.Wan 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.x.n y.xing D.l.x. R.x.xu l.x.e D.h.y.n C.W.y.ng F.F.y.ng j.y.y.ng l.l.y.ng m.j.y.n R.Z.y.ng S.B.y.ng y.h.y.o Z.G.y.o y.m.y. l.Q.y.n N.y.n x.h.y.u Z.y.y.u y.h.y. Q.y.an 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.Zhan x.Zhang x.p.Zhan y.Zhan y.Zhang y.F.Zhang y.l.Zhan 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. Key.laborat.ry.of part.cle Ast.ophy.ics&Experiment.l phy.ics Division&Comput.ng Cent.r Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Universit.0}of Chinese Academy.of Sciences Beijing 100049China t.ANFU Cosmic Ray.Research Cent.r ChengduSichuanChina St.t. Key.laborat.ry.of part.cle Det.ct.on and Elect.onics BeijingChina Universit.0}of Science and t.chnology.of China Hefei 230026AnhuiChina Depart.ent.of Engineering phy.ics Tsinghua UniversityBeijing 100084China Nat.onal Ast.onomical Observat.ries Chinese Academy of SciencesBeijing 100101China Nat.onal Space Science Cent.r Chinese Academy of SciencesBeijing 100190China School of phy.ics Peking UniversityBeijing 100871China Cent.r for Ast.ophy.ics Guangzhou UniversityGuangzhou 510006GuangdongChina School of phy.ics and Ast.onomy.School of phy.ics(Guangzhou) Sun Yat-sen UniversityZhuhai 519000GuangdongChina School of phy.ical Science and t.chnology Guangxi UniversityNanning 530004GuangxiChina hebei Normal Universit. Shijiazhuang 050024HebeiChina School of phy.ics and microelect.onics Zhengzhou UniversityZhengzhou 450001HenanChina School of Ast.onomy.and Space Science Nanjing UniversityNanjing 210023JiangsuChina Key.laborat.ry.of Dark mat.er and Space Ast.onomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina Inst.t.t. of Front.er and Int.rdisciplinary.Science Shandong UniversityQingdao 266237ShandongChina Key.laborat.ry.for Research in Gal.x.es and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China t.ung-Dao lee Inst.t.t.&School of phy.ics and Ast.onomy Shanghai Jiao Tong UniversityShanghai 200240China School of phy.ical Science and t.chnology.School of Informat.on Science and t.chnology Southwest Jiaotong UniversityChengdu 610031SichuanChina College of phy.ics Sichuan UniversityChengdu 610065SichuanChina Key.laborat.ry.of Cosmic Ray.(t.bet.Universit.0} Ministry of EducationLhasa 850000TibetChina School of phy.ic

purpose Observat.on of high energy.and very.high emission from Ga.m. Ray.Burst.(GRBs)is crucial t. st.dy.t.e gigant.c explosion and t.e underline *** a large field-of-view and a.m.st.full dut.0}cy.le,t.e Wat.r Cherenkov Det.ct.r Array.WCDA),a sub-array.of t.e large high Alt.t.de Air Shower Observat.ry.lhAASO),is appropriat. t. monit.r t.e very.high energy.emission from unpredict.ble t.ansient. such as *** Nevert.eless,t.e main issue for an ext.nsive air shower array.is t.e high energy.t.reshold which limit. t.e horizon of t.e *** address t.is issue a new t.igger met.od is developed in t.is art.cle t. lower t.e energy.t.reshold of WCDA for GRB *** t.e proposed met.od significant.y.improves t.e det.ct.on efficiency.of WCDA for ga.m.-ray. around t.e GRB direct.on at.10-300 *** sensit.vit.0}of t.e WCDA for GRB det.ct.on wit. t.e new t.igger met.od is *** achieved sensit.vit.0}of t.e quart.r WCDA array.above 10 GeV is comparable wit. t.at.of *** dat. analy.is process and corresponding fluence upper limit.for GRB 190719C is present.d as an example.

关键词： lhAASO WCDA GRB

Search for elect.on-ant.neut.inos associat.d wit. gravit.t.onal-wave event. GW150914,GW151012,GW151226,GW170104,GW170608,GW170814,and GW170817 at.Day. Bay

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Chinese phy.ics C 2021年第5期45卷 190-201页

作者： F.p.An A.B.Balant.kin h.R.Band m.Bishai S.Bly.h G.F.Cao j.Cao j.F.Chang y.Chang h.S.chen S.m.chen y.chen y.x.chen j.cheng Z.K.cheng j.j.Cherwinka.m.C.Chu j.p.Cummings O.Dalager F.S.Deng y.y.Ding m.V.Diwan t.Dohnal j.Dove m.Dvorak D.A.Dwy.r j.p.Gallo m.Gonchar G.h.Gong h.Gong W.Q.Gu j.y.guo l.guo x.h.guo y.h.guo Z.guo R.W.hackenburg S.hans m.he K.m.heeger y.K.heng A.higuera y.K.hor y.B.hsiung B.Z.hu j.R.hu t.hu Z.j.hu h.x.huang x.t.huang y.B.huang p.h.ber D.E.j.ffe K.l.j.n x.l.j. x.p.j. R.A.j.hnson D.j.nes l.Kang S.h.Ket.ell S.Kohn m.Kramer t.j.langford j.lee j.h.C.lee R.t.lei R.leit.er j.K.C.leung F.li j.j.li Q.j.li S.li S.C.li W.D.li x.N.li x.Q.li y.F.li Z.B.li h.liang C.j.lin G.l.lin S.lin j.j.ling j.m.link l.lit.enberg B.R.lit.lej.hn j.C.liu j.l.liu C.lu h.Q.lu j.S.lu K.B.luk x.B.ma x.y.ma y.Q.ma C.marshall D.a.m.rt.nez Caicedo K.t.meDonald R.D.mcKeown y.meng j.Napolit.no D.Na.m.v E.Na.m.va j.p.Ochoa-Ricoux A.OIshevskiy.h.-R.pan j.park S.pat.on j.C.peng C.S.j.pun F.Z.Qi m.Qi x.Qian N.Raper j.Ren C.morales Reveco R.Rosero B.Roskovec x.C.Ruan h.St.iner j.l.Sun t.t.ej.K.t.eskov W.-h.t.e C.E.t.ll B.Viren V.Vorobel C.h.Wang j.Wang m.Wang N.y.Wang R.G.Wang W.Wang W.Wang x.Wang y.Wang y.F.Wang Z.Wang Z.Wang Z.m.Wang h.y.Wei l.h.Wei l.j.Wen K.Whisnant.C.G.Whit. h.l.h.Wong E.Worcest.r D.R.wu F.l.wu Q.wu W.j.wu D.m.xia Z.Q.xie Z.Z.xing j.l.x. t.xu t.xue C.G.y.ng l.y.ng y.Z.y.ng h.F.y.o m.y. m.y.h B.l.y.ung h.Z.y. Z.y.y. B.B.y.e S.zeng y.zeng l.Zhan C.Zhang F.y.Zhang h.h.Zhang j.W.Zhang Q.m.Zhang x.t.Zhang y.m.Zhang y.x.Zhang y.y.Zhang Z.j.Zhang Z.p.Zhang Z.y.Zhang j.Zhao l.Zhou h.l.Zhuang j.h.Zou Inst.ut. of modern phy.ics East China University of Science and TechnologyShanghai 200237 Universit.0}of Wisconsin MadisonWisconsin 53706 Wright.laborat.ry.and Depart.ent.of phy.ics Yale UniversityNew HavenConnecticut 06520 Brookhaven Nat.onal laborat.ry UptonNew York 11973 Depart.ent.of phy.ics National Taiwan UniversityTaipei Inst.t.t. of high Energy.phy.ics Beijing 100049 Nat.onal Unit.d Universit. Miao-Li Depart.ent.of Engineering phy.ics Tsinghua UniversityBejing 100084 Shenzhen Universit. Shenzhen 518060 Sun y.t.Sen(Zhongshan)Universit. Guangzhou Nort. China Elect.ic power Universit. Bejjing 102206 Chinese Universit.0}of hong Kong Hong Kong 999077 Siena College LoudonvilleNew York 12211 Depart.ent.of phy.ics and Ast.onomy University of CaliforniaIrvineCaliformia 92697 Universit.0}of Science and t.chnology.of China Hefei 230026 Charles Universit. Faculty of Mathematics and PhysicsPrague Depart.ent.of phy.ics University of llinois at Urbana-ChampaignUrbanaIlinois 61801 lawrence Berkeley.Nat.onal laborat.ry BerkeleyCalifornia 94720 Depart.ent.of phy.ics Illinois Institute of TechnologyChicagoIllinois 60616 j.int.Inst.t.t. for Nuclear Research DubnaMoscow Region Beij.ng Normal Universit. Beijing 100875 Depart.ent.of Nuclear Science and t.chnology School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049 Depart.ent.of phy.ics University of HoustonHoustonTexas 77204 China Inst.t.t. of At.mic Energy Beijing 102413 Shandong Universit. Jinan 250100 Guangxi Universit. Nanning 530004 Cent.r for Neut.ino phy.ics Virginia TechBlacksburgVirginia 24061 Inst.t.t. of phy.ics National Chiao-Tung UniversityHsinchu Depart.ent.of phy.ics University of CincinnatiCincinnatiOhio 45221 Depart.ent.of phy.ies Collge of Science and TechnologyTemple UniversityPhiladelphiaPennsylvania 19122 Dongguan Universit.0}of t.chnology Dongguan 523808 Depart.ent.of phy.ics University of CaliforniaBerkeleyCalifornia 94720 Depart.ent.of phy.ics The University of Hong KongPokfulamHong Kong 999077 School

t.e est.blishment.of a possible connect.on bet.een neut.ino emission and gravit.t.onal-wave(GW)burst. is import.nt.t. our underst.nding of t.e phy.ical processes t.at.occur when black holes or neut.on st.rs *** t.e Day. Bay.experiment.using t.e dat. collect.d from December 2011 t. August.2017,a search was per-formed for elect.on-ant.neut.ino signals t.at.coincided wit. det.ct.d GW event.,including GW150914,GW151012,GW151226,GW170104,GW170608,GW 170814,and GW *** used t.ree t.me windows of±10,±500,and±1000 s relat.ve t. t.e occurrence of t.e GW event. and a neut.ino energy.range of 1.8 t. 100 meV t. search for correlat.d neut.ino *** det.ct.d elect.on-ant.neut.ino candidat.s were consist.nt.wit. t.e expect.d background rat.s for all t.e t.ree t.me *** monochromat.c spect.a,we found upper limit.(90%confidence level)of t.e elect.on-ant.neut.ino fluence of(1.13-2.44)×10^(11)cm^(-2)at.5 meV t. 8.0×10^(7)cm^(-2)at.100 meV for t.e t.ree t.me w *** t.e assumpt.on of a Fermi-Dirac spect.um,t.e upper limit. were found t. be(5.4-7.0)×10^(9)cm^(2)for t.e t.ree t.me windows.

关键词： grav it.t.onal waves elect.on-ant.neut.inos fluence upper limit