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sTCF conceptual design report (Volume 1): Phy.ics & detector

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

作者： M.Achasov X.C.Ai L.P.An R.Aliberti 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.Fedotovich 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.Matvienko z.X.Meng R.Mitchell 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.Peters s.Pivovarov E.Py.ta B.B.q. y.q.q. W.B.q.an y.q.an C.F.q.ao j.j.q.n j.j.q.n L.q.q.n X.s.q.n T.L.q.u j.Rademacker C.F.Redmer H.y.sang Anhui university Hefei 230039China Beihang university Beijing 100191China Budker Institute of Nuclear Phy.ics Novosibirsk 630090Russia CAs key.Laboratory.of Theoretical Phy.ics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal university Wuhan 430079China Central south university Changsha 410083China China university.of Geosciences Wuhan 430074China China university.of Mining and Technology Xuzhou 221116China École Poly.echniq.e Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan university Shanghai 200433China Goethe university.Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal university Guilin 541004China Guangxi uninversity Nanning 530004China Hangzhou Institute for Advanced study UCASHangzhou 310024China Hebei Normal university Shijiazhuang 050024China Hebei university Baoding 071002China Hefei university.of Technology Hefei 230601China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal university Xinxiang 453007China Henan university Kaifeng 475004China High Energy.Phy.ics Center Chung-Ang UniversitySeoul 06974Korea Higher school of Economy.11 Pokrovsky.Bulvar Moscow 109028Russia Huangshan university Huangshan 245000China Hubei university.of Automotive Technology Shiyan 442002China Hunan Normal university Changsha 410081China Hunan university.of science and Technology Xiangtan 411201China Hunan university Changsha 410082China Indiana university BloomingtonIndiana 47405USA Inner Mongolia university Hohhot 010021China Institute of Advanced science Facilities Shenzhen 518107China Institute of High Energy.Phy.ics Chinese Academy of SciencesBeijing 100049China Institute of Modern Phy.ics Chinese Academy of SciencesLanzhou 730000China Institute of Phy.ics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Phy.ics Chinese Academy of SciencesBeijing 100190China j.lin university Changch

The superτ-charm facility.sTCF)is an electron–positron collider proposed by.the Chinese particle phy.ics *** is designed to operate in a center-of-mass energy.range from 2 to 7 GeV with a peak luminosity.of 0.5×10^(35) cm^(–2)·s^(–1) or *** sTCF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory.the BEPCII,providing a uniq.e platform for exploring the asy.metry.of matter-antimatter(charge-parity.violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and phy.ics bey.nd the standard *** sTCF proj.ct in China is under development with an extensive R&D *** document presents the phy.ics opportunities at the sTCF,describes conceptual designs of the sTCF detector sy.tem,and discusses future plans for detector R&D and phy.ics case studies.

关键词： electron–positron collider tau-charm region high luminosity sTCF detector conceptual design

Measurement of the integrated Luminosities of cross-section scan data samples around theψ(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. Ahmed M. Albrecht M. Alekseev A. Amoroso F. F. An q. An y. Bai O. Bakina R. Baldini Ferroli y. Ban k. Begzsuren D. W. Bennett j. V. Bennett N. Berger M. Bertani D. Bettoni F. Bianchi E. Boger I. Boy.o R. A. Briere H. Cai X. Cai O. Cakir A. Calcaterra G. F. Cao s. A. Cetin 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. Cibinetto F. Cossio H. a. Dai, j. F. Dai A. Dbey.si D. Dedovich z. y. Deng A. Denig I. Deny.enko M. Destefanis 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. Fioravanti M. Fritsch C. D. Fu q. Gao X. L. Gao y. Gao, y. G. Gao z. Gao B. Garillon I. Garzia A. Gilman k. Goetzen 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. Holtmann 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. kalantar-Nay.stanaki X. s. kang M. kavatsy.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. kurth W. kiihn j. s. Lange M. Lara P. Larin L. Lavezzi s. Leiber H. Leithofi 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 university Beijing 100191 China Beij.ng Institute of Petrochemical Technology Beijing 102617 China Bochum Ruhr-university D-44780 Bochum Germany Carnegie Mellon university Pittsburgh Pennsylvania 15213 USA Central China Normal university Wuhan 430079 China China Center of Advanced science and Technology Beijing 100190 China COMsATs Institute of Information Technology Lahore Defence Road Off Raiwind Road 54000 Lahore Pakistan G.I. Budker Institute of Nuclear Phy.ics sB RAs （BINP） Novosibirsk 630090 Russia GsI Helmholtzcentre for Heavy.Ion Research GmbH D-64291 Darmstadt Germany Guangxi Normal university Guilin 541004 China Guangxi university Nanning 530004 China Hangzhou Normal university Hangzhou 310036 China Helmholtz Institute Mainz JohannwJoachim-Becher-Weg 45 D-55099 Mainz Germany Henan Normal university Xinxiang 453007 China Henan university.of science and Technology Luoyang 471003 China Huangshan College Huangshan 245000 China Hunan Normal university Changsha 410081 China Hunan university Changsha 410082 China Indian Institute of Tec

To investigate the nature of the Ψ（3770） resonance and to measure the cross section for e^＋e^-→DD, a cross-section scan data sample, distributed among 41 center-of-mass energy.points from 3.73 to 3.89 GeV, was taken with the BEsIII detector operated at the BEPCII collider in the y.ar 2010. By.analy.ing the large angle Bhabha scattering events, we measure the integrated luminosity.of the data sample at each center-of-mass energy.point. The total integrated luminosity.of the data sample is 76.16±0.04±0.61 pb^-1, where the first uncertainty.is statistical and the second sy.tematic.

关键词： Bhabha scattering events integrated luminosity.BEsⅢ

Observation of the Crab Nebula with LHAAsO-kM2A−a performance study

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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.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.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.Masood W.Mitthumsiri T.Montaruli 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 y..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.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.Laboratory.of Particle Astrophy.cs&Experimental Phy.ics 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 Phy.ics Tsinghua University100084 BeijingChina National Astronomical Observatories Chinese Academy of Sciences100101 BeijingChina National space science Center Chinese Academy of Sciences100190 BeijingChina school of Phy.ics Peking University100871 BeijingChina Center for Astrophy.ics Guangzhou University510006 GuangzhouGuangdongChina school of Phy.ics and Astronomy.school of Phy.ics(Guangzhou) Sun Yat-sen University519000 ZhuhaiGuangdongChina school of Phy.ical science and Technology Guangxi University530004 NanningGuangxiChina Hebei Normal university 050024 ShijiazhuangHebeiChina school of Phy.ics 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 Phy.ics and Astronomy Shanghai Jiao Tong University200240 ShanghaiChina school of Phy.ical science and Technology.school of Information science and Technology Southwest Jiaotong University610031 ChengduSichuanChina College of Phy.ics Sichuan University610065 ChengduSichuanChina key.Laboratory.of Cosmic Ray.(Tibet university. Ministry of Education850000 LhasaTibetChina school of Phy.ics 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 analy.is 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.analy.ing the kM2A data of 136 live day. between December 2019 and May.*** the observations,we test the detector performance,including angular resolution,pointing accuracy.and cosmic-ray.background rej.ction *** 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±0.08sy.)×10^(-14).(E/20 TeV)-309±0.06stat±0.02sy.cm^(-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 ray.

Future Phy.ics Programme of BEsⅢ

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Chinese Phy.ics C 2020年第4期44卷 I0001-I0004,1-102页

作者： M.Ablikim M.N.Achasov P.Adlarson s.Ahmed M.Albrecht M.Alekseev A.Amoroso F.F.An q.An y.Bai O.Bakina R.Baldini Ferroli y.Ban k.Begzsuren j.V.Bennett N.Berger M.Bertani D.Bettoni F.Bianchi j.Biernat j.Bloms I.Boy.o R.A.Briere L.Calibbi H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao s.A.Cetin j.Chai j.F.Chang W.L.Chang j.Charles G.Chelkov Chen G.Chen H.s.Chen j.C.Chen M.L.Chen s.j.Chen y.B.Chen H.y.Cheng W.Cheng G.Cibinetto F.Cossio X.F.Cui H.L.Dai j.P.Dai X.C.Dai A.Dbey.si D.Dedovich z.y.Deng A.Denig Deny.enko M.Destefanis s.Descotes-Genon F.De Mori y.Ding C.Dong j.Dong L.y.Dong M.y.Dong z.L.Dou s.X.Du s.I.Eidelman j.z.Fan j.Fang s.s.Fang y.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.q.feng M.Fritsch C.D.Fu y.Fu q.Gao X.L.Gao y.Gao y.Gao y.G.Gao z.Gao B.Garillon I.Garzia E.M.Gersabeck A.Gilman k.Goetzen L.Gong W.X.Gong W.Gradl M.Greco L.M.Gu M.H.Gu y.T.Gu A.q.Guo F.k.Guo L.B.Guo R.P.Guo y.P.Guo A.Guskov s.Han X.q.Hao F.A.Harris k.L.He F.H.Heinsius T.Held y.k.Heng y.R.Hou z.L.Hou H.M.Hu j.F.Hu T.Hu y.Hu G.s.Huang j.s.Huang X.T.Huang X.z.Huang z.L.Huang N.Huesken T.Hussain W.Ikegami Andersson W.Imoehl M.Irshad q.j. q.P.j. X.B.j. X.L.j. H.L.j.ang 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 N.kalantar-Nay.stanaki X.s.kang R.kappert M.kavatsy.k B.C.ke I.k.keshk T.khan A.khoukaz P.kiese R.kiuchi R.kliemt L.koch O.B.kolcu B.kopf M.kuemmel M.kuessner A.kupsc M.kurth M.G.kurth W.kuhn j.s.Lange P.Larin L.Lavezzi H.Leithoff T.Lenz 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 ke Li L.k.Li Lei Li P.L.Li P.R.Li q.y.Li W.D.Li W.G.Li X.H.Li X.L.Li X.N.Li X.q.Li z.B.Li H.Liang H.Liang y.F.Liang y.T.Liang G.R.liao L.z.liao j.Libby.C.X.Lin D.X.Lin y.j.Lin B.Liu B.j.Liu C.X.Liu D.Liu D.y.Liu F.H.Liu Fang Liu feng Liu H.B.Liu H.M.Liu Huanhuan Liu Huihui Liu j.B.Liu j.y.Liu k.y.Liu ke Liu q.Liu s.B.Liu T.Liu X.Liu X.y.Liu y.B.Liu z.A.Liu zhiq.ng Liu y.F.Long X.C.Lou H.j.Lu j.D.Lu j.G.Lu y.Lu y.P.Lu C.L.Luo M.X.Luo P.W.Luo T.Luo X.L.Luo s.Lusso X.R.Ly. F.C.Ma H.L.Ma L.L.Ma M.M.Ma q.M.Ma X.N.Ma X.X. Institute of High Energy.Phy.ics Beijing 100049China Beihang university Beijing 100191China Beij.ng Institute of Petrochemical Technology Beijing 102617China Bochum Ruhr-university D-44780 BochumGermany Carnegie Mellon university PittsburghPennsylvania 15213USA Central China Normal university Wuhan 430079China China Center of Advanced science and Technology Beijing 100190China COMsATs university.Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan university Shanghai 200443China G.I.Budker Institute of Nuclear Phy.ics sB RAs(BINP) Novosibirsk 630090Russia GsI Helmholtzcentre for Heavy.Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal university Guilin 541004China Guangxi university Nanning 530004China Hangzhou Normal university Hangzhou 310036China Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Henan Normal university Xinxiang 453007China Henan university.of science and Technology Luoyang 471003China Huangshan College Huangshan 245000China Hunan Normal university Changsha 410081China Hunan university Changsha 410082China Indian Institute of Technology.Madras Chennai 600036India Indiana university BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati I-00044FrascatiItaly INFN sezione di Ferrara I-44122FerraraItaly Institute of Phy.ics and Technology Peace Ave.54BUlaanbaatar 13330Mongolia j.hannes Gutenberg university.of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany j.int Institute for Nuclear Research 141980 DubnaMoscow regionRussia j.s.us-Liebig-universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16D-35392 GiessenGermany kVI-CART University of GroningenNL-9747 AA GroningenThe Netherlands Lanzhou university Lanzhou 730000China liaoning university Shenyang 110036China Nanj.ng Normal university Nanjing 210023China Nanj.ng university Nanjing 210093China Nankai university Tianjin 300071China Peking university Beijing 100871China shandong university Jinan 250100China shanghai

There has recently.been a dramatic renewal of interest in hadron spectroscopy.and charm phy.ics. This renaissance has been driven in part by.the discovery.of a plethora of charmonium-like Xy. states at BEsⅢ and B factories, and the observation of an intriguing proton-antiproton threshold enhancement and the possibly.related X(1835) meson state at BEsⅢ, as well as the threshold measurements of charm mesons and charm bary.ns. We present a detailed survey.of the important topics in tau-charm phy.ics and hadron phy.ics that can be further explored at BEsⅢ during the remaining operation period of BEPCⅡ. This survey.will help in the optimization of the data-taking plan over the coming y.ars, and provides phy.ics motivation for the possible upgrade of BEPCⅡ to higher luminosity.

关键词： meson hadron optimization

Measurements of the center-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.Ahmed M.Albrecht R.Aliberti 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.Bertani D.Bettoni F.Bianchi j.Bloms A.Bortone I.Boy.o R.A.Briere H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao s.A.Cetin 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.Cibinetto 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.Destefanis 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.Fritsch 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.Goetzen 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.Holtmann 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.Huang 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.kalantar-Nay.stanaki X.s.kang R.kappert M.kavatsy.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.kurth W.kuhn j.j.Lane j.s.Lange P.Larin A.Lavania L.Lavezzi z.H.Lei H.Leithoff 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 Institute of High Energy.Phy.ics Beijing 100049China Beihang university Beijing 100191China Beij.ng Institute of Petrochemical Technology Beijing 102617China Bochum Ruhr-university D-44780 BochumGermany Carnegie Mellon university PittsburghPennsylvania 15213USA Central China Normal university Wuhan 430079China China Center of Advanced science and Technology Beijing 100190China COMsATs university.Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan university Shanghai 200443China G.I.Budker Institute of Nuclear Phy.ics sB RAs(BINP) Novosibirsk 630090Russia GsI Helmholtzcentre for Heavy.Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal university Guilin 541004China Guangxi university Nanning 530004China Hangzhou Normal university Hangzhou 310036China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal university Xinxiang 453007China Henan university.of science and Technology Luoyang 471003China Huangshan College Huangshan 245000China Hunan Normal university Changsha 410081China Hunan university Changsha 410082China Indian Institute of Technology.Madras Chennai 600036India Indiana university BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Nazionali di Frascati 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 Institute of Modern Phy.ics Lanzhou 730000China Institute of Phy.ics and Technology Peace Ave.54BUlaanbaatar 13330Mongolia j.lin university Changchun 130012China j.hannes Gutenberg university.of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany j.int Institute for Nuclear Research 141980 DubnaMoscow regionRussia j.s.us-Liebig-universitaet Giessen II.Physikali

During the 2016-17 and 2018-19 running periods,the BEsIII experiment collected 7.5 fb of e^(+)e^(-)collision data at center-of-mass energies ranging from 4.13 to 4.44 *** data samples are primarily.used for the study.of excited charmonium and charmoniumlike *** analy.ing the di-muon process e^(+)e^(-)→(γIsR=FsR)μ^(+)μ^(-),we measure the center-of-mass energies of the data samples with a precision of 0.6 *** a run-by.run study.we find that the center-of-mass energies were stable throughout most of the data-collection period.

关键词： center-of-mass energy e^(+)e^(-) annihilation BEsIII

study.of BEsIII trigger efficiencies with the 2018 j.ψ data

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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.Ahmed M.Albrecht R.Aliberti 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.Bertani D.Bettoni F.Bianchi j.Bloms A.Bortone I.Boy.o R.A.Briere H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao s.A.Cetin 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.Cibinetto 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.Destefanis 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.Fritsch 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.Goetzen 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.Holtmann 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.Huang 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.kalantar-Nay.stanaki X.s.kang R.kappert M.kavatsy.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.kurth W.kühn j.j.Lane j.s.Lange P.Larin A.Lavania L.Lavezzi z.H.Lei H.Leithoff 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 Institute of High Energy.Phy.ics Beijing 100049China Beihang university Beijing 100191China Beij.ng Institute of Petrochemical Technology Beijing 102617China Bochum Ruhr-university D-44780 BochumGermany Carnegie Mellon university PittsburghPennsylvania 15213USA Central China Normal university Wuhan 430079China China Center of Advanced science and Technology Beijing 100190China COMsATs university.Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan university Shanghai 200443China GIBudker Institute of Nuclear Phy.ics sB RAs(BINP) Novosibirsk 630090Russia GsI Helmholtzcentre for Heavy.Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal university Guilin 541004China Guangxi university Nanning 530004China Hangzhou Normal university Hangzhou 310036China Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Henan Normal university Xinxiang 453007China Henan university.of science and Technology Luoyang 471003China Huangshan College Huangshan 245000China Hunan Normal university Changsha 410081China Hunan university Changsha 410082China Indian Institute of Technology.Madras Chennai 600036India Indiana university BloomingtonIndiana 47405USA (A)INFN Laboratori Nazionali di Frascati 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 Institute of Modern Phy.ics Lanzhou 730000China Institute of Phy.ics and Technology Peace Ave54BUlaanbaatar 13330Mongolia j.lin university Changchun 130012China j.hannes Gutenberg university.of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany j.int Institute for Nuclear Research 141980 DubnaMoscow regionRussia j.s.us-Liebig-universitaet Giessen IIPhysikalisches InstitutHeinrich-Buff-Ring 16D-35392GiessenGermany kVI-CART University of GroningenNL-9747 AA GroningenThe Netherlands Lanzhou university Lanzhou 730000China liaoning Normal unive

using a dedicated data sample taken in 2018 on the j.ψpeak,we perform a detailed study.of the trigger efficiencies of the BEsIII *** efficiencies are determined from three representative phy.ics processes,namely.Bhabha scattering,dimuon production and generic hadronic events with charged *** combined efficiency.of all active triggers approaches 100%in most cases,with uncertainties small enough not to affect most phy.ics analy.es.

关键词： BEsIII trigger efficiency Bhabha dimuon hadronic events

Amplitude analy.is of the decay. D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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Chinese Phy.ics C 2024年第8期48卷 6-33页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis X.C.Ai R.Aliberti A.Amoroso q.An y.Bai O.Bakina I.Balossino y.Ban H.-R.Bao V.Batoz.k.y. k.Begzsuren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boy.o R.A.Briere A.Brueggemann H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao s.A.Cetin j.F.Chang W.L.Chang G.R.Che G.Chelkov C.Chen C.H.Chen Chao Chen G.Chen H.s.Chen M.L.Chen s.j.Chen s.L.Chen s.M.Chen T.Chen X.R.Chen X.T.Chen y.B.Chen y.q.Chen z.j.Chen z.y.Chen s.k.Choi X.Chu G.Cibinetto F.Cossio j.j.Cui H.L.Dai j.P.Dai A.Dbey.si R.E.de Boer D.Dedovich C.q.Deng z.y.Deng A.Denig I.Deny.enko M.Destefanis F.De Mori B.Fang s.s.Fang W.X.Fang y.Fang y.q.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.q.feng j.H.feng y.T.feng k.Fischer M.Fritsch C.D.Fu j.L.Fu y.W.Fu H.Gao y.N.Gao y.ng Gao s.Garbolino I.Garzia P.T.Ge z.W.Ge C.Geng E.M.Gersabeck B.Ding X.X.Ding y.Ding y.Ding j.Dong L.y.Dong M.y.Dong X.Dong M.C.Du s.X.Du z.H.Duan P.Egorov y.H.Fan j.Fang j..Gilman k.Goetzen L.Gong W.X.Gong W.Gradl s.Gramigna M.Greco M.H.Gu y.T.Gu C.y.Guan z.L.Guan A.q.Guo L.B.Guo M.j.Guo R.P.Guo y.P.Guo A.Guskov j.Gutierrez.k.L.Han T.T.Han X.q.Hao F.A.Harris k.k.He k.L.He F.H.Heinsius C.H.Heinz y.k.Heng C.Herold T.Holtmann P.C.Hong G.y.Hou X.T.Hou y.R.Hou z.L.Hou B.y.Hu H.M.Hu j.F.Hu T.Hu y.Hu G.s.Huang k.X.Huang L.q.Huang X.T.Huang y.P.Huang T.Hussain F.H\"olzken N.H\"usken N.in der Wiesche M.Irshad j.j.ckson s.j.nchiv j.H.j.ong q.j. q.P.j. W.j. X.B.j. X.L.j. y.y.j. X.q.j.a z.k.j.a D.j.ang H.B.j.ang P.C.j.ang s.s.j.ang T.j.j.ang X.s.j.ang y.j.ang j.B.j.ao j.k.j.ao z.j.ao s.j.n y.j.n M.q.j.ng X.M.j.ng T.j.hansson s.kabana N.kalantar-Nay.stanaki X.L.kang X.s.kang M.kavatsy.k B.C.ke V.khachatry.n A.khoukaz R.kiuchi O.B.kolcu B.kopf M.kuessner X.kui A.kupsc W.k\"uhn j.j.Lane P.Larin L.Lavezzi T.T.Lei z.H.Lei H.Leithoff M.Lellmann T.Lenz C.Li C.Li C.H.Li Cheng Li D.M.Li F.Li G.Li H.Li H.B.Li H.j.Li H.N.Li Hui Li j.R.Li j.s.Li k.Li L.j.Li L.k.Li Lei Li M.H.Li P.R.Li q.M.Li q.X.Li R.Li s.X.Li T.Li W.D.Li W.G.Li X.Li X.H.Li X.L.Li X.y.Li y Institute of High Energy.Phy.ics Chinese Academy of SciencesBeijing 100049China Beihang university Beijing 100191China Bochum Ruhr-university D-44780 BochumGermany Budker Institute of Nuclear Phy.ics sB RAs(BINP) Novosibirsk 630090Russia Carnegie Mellon university PittsburghPennsylvania 15213USA Central China Normal university Wuhan 430079China Central south university Changsha 410083China China Center of Advanced science and Technology Beijing 100190China China university.of Geosciences Wuhan 430074China Chung-Ang university Seoul06974Republic of Korea COMsATs university.Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan university Shanghai 200433China GsI Helmholtzcentre for Heavy.Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal university Guilin 541004China Guangxi university Nanning 530004China Hangzhou Normal university Hangzhou 310036China Hebei university Baoding 071002China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal university Xinxiang 453007China Henan university Kaifeng 475004China Henan university.of science and Technology Luoyang 471003China Henan university.of Technology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan Normal university Changsha 410081China Hunan university Changsha 410082China Indian Institute of Technology.Madras Chennai 600036India Indiana university BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Nazionali di Frascati University of PerugiaI-06100PerugiaItaly INFN sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN sezione di Ferrara University of FerraraI-44122FerraraItaly Inner Mongolia university Hohhot 010021China Institute of Modern Phy.ics Lanzhou 730000China Institute of Phy.ics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

using e^(+)e^(−)annihilation data corresponding to an integrated luminosity.of 2.93 fb^(−1)taken at the center-of-mass energy.s=3.773 GeV with the BEsIII detector,a j.int amplitude analy.is is performed on the decay. D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual components are obtained,and large interferences among the dominant components of the decay. D^(0)→a_(1)(1260)π,D^(0)→π(1300)π,D^(0)→ρ(770)ρ(770),and D^(0)→2(ππ)_(s)are observed in both *** the obtained amplitude model,the CP-even fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(sy.t.))%and(68.9±1.5_(stat).±2.4_(sy.t.))%,*** branching fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(sy.t.))%and(0.951±0.025_(stat.)±0.021_(sy.t.))%,*** amplitude analy.is provides an important model for the binning strategy.in measuring the strong phase parameters of D^(0)→4πwhen used to determine the CkM angleγ(ϕ_(3))via the B^(−)→Dk^(−)decay.

关键词： BEsIII D^(0)meson decay. amplitude analy.is CP-even fraction

Reconstruction of Cherenkov image by.ultiple telescopes of LHAAsO-WFCTA

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Radiation Detection Technology.and Methods 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 zhe Cao zhen 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 Piazzoli B.z.Dai H.L.Dai z.G.Dai Danzengluobu 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 WLLi XRLi Xin Li Xin Li y.Li zhe Li zhuo 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.Ma L.L.Ma X.H.Ma j.R.Mao A.Masood z.Min W.Mitthumsiri 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 y..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 zhen Wang zheng Wang D.M.Wei j.j.Wei y.j.Wei T.Wen C.y.Wu H.R.Wu s.Wu X.F.Wu y.s.Wu 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.y.n j.z.y.n C.W.y.ng F.F.y.ng H.W.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.y.e H.D.zeng T.X.zeng W.zeng z.k.zeng M.zha X.X.zhai B.B.zhang F.zhang H.M.zhang H.y.zhang j.L.zhang L.X.zhang Li zhang Lu zhang P.F.zhang P.P.zhang R.zhang s.B.zhang s.R.zhang s. key.Laboratory.of Particle Astrophy.cs&Experimental Phy.ics 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 Dublin Institute for Advanced studies 31 Fitzwilliam Place2DublinIreland Max-Planck-Institut for Nuclear Phy.ics 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 Phy.ical science and Technology.school of Information science and Technology Southwest Jiaotong UniversityChengdu 610031SichuanChina College of Phy.ics Sichuan UniversityChengdu 610065SichuanChina school of Astronomy.and space science Nanjing UniversityNanjing 210023JiangsuChina Center for Astrophy.ics Guangzhou UniversityGuangzhou 510006GuangdongChina key.Laboratory.of Dark Matter and space Astronomy.key.Laboratory.of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina key.Laboratory.for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China key.Laboratory.of Cosmic Ray.(Tibet university. Ministry of EducationLhasa 850000TibetChina National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Hebei Normal university Shijiazhuang 050024HebeiChina school of Phy.ics and Astronomy.zhuhai)&sino-French Institute of Nuclear Engineering and Technology.zhuhai) Sun Yat-sen UniversityZhuhai 519000China school of Phy.ics(Guangzhou) Sun Yat-sen UniversityGuangzhou 510275GuangdongChina Dipartimento di Fisica dell’universitàdi Napoli“Federico II” Complesso Universitario di Monte Sant’Angelovia Cinthia80126 NapoliItaly school of Phy.ics and Astronomy Yunnan UniversityKunming 650091YunnanChina Département de Phy.iq.e Nucléaire et Corpusculaire Facultéde SciencesUniversitéde Genève

Introduction One of main scientiﬁc goals of the Large High Altitude Air shower Observatory.LHAAsO)is to accurately.measure the energy.spectra of different cosmic ray.compositions around the‘knee’*** Wide Field-of-View(FoV)Cherenkov Telescope Array.WFCTA),which is one of the main 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 deploy.d spatially.as close as possible,but due to their own size,the distance between two adj.cent telescopes is about 10 ***,the Cherenkov lateral distribution and the parallax between the two telescopes should be considered in the event building process for images crossing over the boundaries of FoVs of the *** event building method for Cherenkov images measured by.multiple telescopes of WFCTA is *** performance of the shower measurements using the combined images is evaluated by.comparing with showers 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 WFCTA by.30%while maintaining the same reconstruction q.ality.compared to the separate telescope reconstruction method.

关键词： method directions conclusion

LHAAsO-kM2A detector simulation using Geant4

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Radiation Detection Technology.and Methods 2024年第3期8卷 1437-1447页

作者： zhen Cao F.Aharonian q.An Axikegu y.X.Bai y.W.Bao D.Bastieri X.j.Bi y.j.Bi j.T.Cai q.Cao W.y.Cao zhe Cao j.Chang j.F.Chang A.M.Chen E.s.Chen Liang Chen Lin Chen Long Chen M.j.Chen M.L.Chen q.H.Chen s.H.Chen s.z.Chen T.L.Chen y.Chen N.Cheng y.D.Cheng M.y.Cui s.W.Cui X.H.Cui y.D.Cui B.z.Dai H.L.Dai z.G.Dai Danzengluobu X.q.Dong k.k.Duan j.H.Fan y.z.Fan j.Fang k.Fang C.F.feng L.feng s.H.feng X.T.feng y.L.feng s.Gabici B.Gao C.D.Gao L.q.Gao q.Gao W.Gao W.k.Gao M.M.Ge L.s.Geng G.Giacinti G.H.Gong q.B.Gou M.H.Gu F.L.Guo X.L.Guo y.q.Guo y.y.Guo y.A.Han H.H.He H.N.He j.y.He X.B.He y.He y.k.Hor B.W.Hou C.Hou X.Hou H.B.Hu q.Hu s.C.Hu D.H.Huang T.q.Huang W.j.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 X.W.j.ang z.j.j.ang M.j.n M.M.kang T.ke D.kuleshov k.kurinov B.B.Li Cheng Li Cong Li D.Li F.Li H.B.Li H.C.Li H.y.Li j.Li j.an Li j.e Li k.Li W.L.Li W.L.Li X.R.Li Xin Li y.z.Li zhe Li zhuo 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.y.Liu M.y.Liu R.y.Liu s.M.Liu W.Liu y.Liu y.N.Liu R.Lu q.Luo H.k.Lv B.q.Ma L.L.Ma X.H.Ma j.R.Mao z.Min W.Mitthumsiri H.j.Mu y.C.Nan A.Neronov 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 D.semikoz C.y.shao L.shao O.shchegolev X.D.sheng F.W.shu H.C.song y..V.stenkin V.stepanov y.su q.N.sun X.N.sun z.B.sun P.H.T.Tam q.W.Tang z.B.Tang W.W.Tian C.Wang C.B.Wang G.W.Wang H.G.Wang H.H.Wang j.C.Wang k.Wang L.P.Wang L.y.Wang P.H.Wang R.Wang W.Wang X.G.Wang X.y.Wang y.Wang y.D.Wang y.j.Wang z.H.Wang z.X.Wang zhen Wang zheng Wang D.M.Wei j.j.Wei y.j.Wei T.Wen C.y.Wu H.R.Wu s.Wu X.F.Wu y.s.Wu 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.F.Xu R.X.Xu W.L.Xu L.Xue D.H.y.n j.z.y.n T.y.n C.W.y.ng F.y.ng F.F.y.ng H.W.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.y.e H.D.zeng T.X.zeng W.zeng M.zha B.B.zhang F.zhang H.M.zhang H.y.zhang j.L.zhang L.X.zhang Li zhang P.F.zhang P.P.zhang R.zhang s.B.zh key.Laboratory.of Particle Astrophy.ics&Experimental Phy.ics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing100049China university.of Chinese Academy.of sciences Beijing100049China TIANFu Cosmic Ray.Research Center ChengduSichuanChina Dublin Institute for Advanced studies 31 Fitzwilliam Place2 DublinIreland Max-Planck-Institute for Nuclear Phy.ics 69029Heidelberg103980Germany state key.Laboratory.of Particle Detection and Electronics BeijingChina university.of science and Technology.of China Hefei230026AnhuiChina school of Phy.ical science and Technology.school of Information science and Technology Southwest Jiaotong UniversityChengdu610031SichuanChina school of Astronomy.and space science Nanjing UniversityNanjing210023JiangsuChina Center for Astrophy.ics Guangzhou UniversityGuangzhou510006GuangdongChina Hebei Normal university Shijiazhuang050024HebeiChina key.Laboratory.of Dark Matter and space Astronomy.key.Laboratory.of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina Tsung-Dao Lee Institute&school of Phy.ics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China key.Laboratory.for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China key.Laboratory.of Cosmic Ray.(Tibet university. Ministry of EducationLhasa 850000TibetChina National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China school of Phy.ics and Astronomy.zhuhai)&school of Phy.ics(Guangzhou)&sino-French Institute of Nuclear Engineering and Technology.zhuhai) Sun Yat-sen UniversityGuangzhouZhuhai 510275519000GuangdongChina school of Phy.ics and Astronomy Yunnan UniversityKunming 650091YunnanChina Institute of Frontier and Interdisciplinary.science Shandong UniversityQingdao 266237ShandongChina APC UniversitéParis CitéCNRS/IN2P3CEA/IRFUObservatoire de ParisParis 11975205France Department of Engineering Phy.

kM2A is one of the main sub-array. of LHAAsO,working on gamma ray.astronomy.and cosmic ray.phy.ics at energies above 10 *** simulation is the important foundation for estimating detector performance and data *** is a big challenge to simulate the kM2A detector in the framework of Geant4 due to the need to track numerous photons from a large number of detector units(>6000)with large altitude difference(30)and huge coverage(1.3).In this paper,the design of the kM2A simulation code G4kM2A based on Geant4 is *** process of G4kM2A is optimized mainly.in memory.consumption to avoid memory.*** simplifications are used to significantly.speed up the execution of *** running time is reduced by.at least 30 times compared to full detector *** particle distributions and the core/angle resolution comparison between simulation and experimental data of the full kM2A array.are also presented,which show good agreement.

关键词： LHAAsO kM2A simulation GEANT4