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STCF conceptual d.sign report (Volume 1): Phy.ics & d.tector

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.Bod.ov A.Bogomy.gkov A.Bond.r 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.d.i L.y.d.i X.C.d.i d.d.d.vich A.d.nig I.d.nisenko j.M.d.as d.z.d.ng L.y.d.7} W.H.d.7} V.d.uz.inin d.S.d. y.j.d. z.G.d. L.M.d.an d.Epifanov y.L.Fan S.S.Fang z.j.Fang G.Fed.tovich 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.Grad. 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.Kenz.e A.Khoukaz.I.Koop E.Kravchenko A.Kuz.in 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.Mald. d.Matvienko z.X.Meng R.Mitchell A.Nefed.ev y.Nefed.v S.L.Olsen Q.Ouy.8} 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.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.Rad.macker C.F.Red.er H.y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Bud.er Institute of Nuclear Phy.ics Novosibirsk 630090Russia CAS Key.Laboratory.of Theoretical Phy.ics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavend.sh 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.echnique Féd.rale d. Lausanne(EPFL) LausanneSwitzerland Fud.n University Shanghai 200433China Goethe University.Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangz.ou Institute for Ad.anced.Stud. 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 Ind.ana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Ad.anced.Science Facilities Shenzhen 518107China Institute of High Energy.Phy.ics Chinese Academy of SciencesBeijing 100049China Institute of Mod.rn 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 collid.r proposed.by.the Chinese particle phy.ics *** is d.signed.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 prod.ce a d.ta sample about a factor of 100 larger than that of the presentτ-charm factory.the BEPCII,provid.ng a unique platform for exploring the asy.metry.of matter-antimatter(charge-parity.violation),in-d.pth stud.es of the internal structure of had.ons and.the nature of non-perturbative strong interactions,as well as searching for exotic had.ons and.phy.ics bey.nd.the Stand.rd.*** STCF proj.ct in China is und.r d.velopment with an extensive R&d.*** d.cument presents the phy.ics opportunities at the STCF,d.scribes conceptual d.signs of the STCF d.tector sy.tem,and.d.scusses future plans for d.tector R&d.and.phy.ics case stud.es.

关键词： electron–positron collid.r tau-charm region high luminosity STCF d.tector conceptual d.sign

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INTERMETALLICS AS SUBSTITUTES FOR SUPERALLOy.

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Acta Metallurgica Sinica(English Letters) 2005年第4期18卷 463-467页

作者： j. z.ang d. feng z. y. z.ong High Temperature Materials d.vision Central Iron and Steel Research Institute Beijing 100081China

The application ad.ances of TiAl, Ti3Al and.Ni3Al base aUoy. were d.numstrated.by.Central Iron and.Steel Research Institute, China. The recent research progresses on improving the reliability.of cast TiAI were mainly.presented.and.d.scussed. The characteristics of the self-oriented.lamellar microstructure in cast TiAI were investigated.in both as cast and.as HlPed.states. Based.on the mechanical anisotropy.of the cast lamellar microstructure, the component specific microstrueture d.sign was proposed.for a better performance and.reliability.of cast TiAl.

关键词： intermetallic application TiAl alloy microstructure d.sign

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Amplitud. analy.is of the d.cay. 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.Ad.arson O.Afed.lid.s X.C.Ai R.Aliberti A.Amoroso Q.An y.Bai O.Bakina I.Balossino y.Ban H.-R.Bao V.Batoz.kay. K.Begz.uren 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.d.i j.P.d.i A.d.ey.si R.E.d. Boer d.d.d.vich C.Q.d.ng z.y.d.ng A.d.nig I.d.ny.enko M.d.stefanis F.d. Mori B.Fang S.S.Fang W.X.Fang y.Fang y.Q.Fang R.Farinelli L.Fava F.Feld.auer 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.7} Gao S.Garbolino I.Garz.a P.T.Ge z.W.Ge C.Geng E.M.Gersabeck B.d.ng X.X.d.ng y.d.ng y.d.ng j.d.20} L.y.d.20} M.y.d.20} X.d.20} M.C.d. S.X.d. z.H.d.an P.Egorov y.H.Fan j.Fang j..Gilman K.Goetz.n L.Gong W.X.Gong W.Grad. 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\"olz.en N.H\"usken N.in d.r 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.Lavez.i 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 Bud.er 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 Ad.anced.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 Fud.n University Shanghai 200433China GSI Helmholtz.entre for Heavy.Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangz.ou 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 Ind.an Institute of Technology.Mad.as Chennai 600036India Ind.ana University BloomingtonIndiana 47405USA INFN Laboratori Naz.onali d. Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Naz.onali d. Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Naz.onali d. Frascati University of PerugiaI-06100PerugiaItaly INFN Sez.one d. Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sez.one d. Ferrara University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 010021China Institute of Mod.rn Phy.ics Lanzhou 730000China Institute of Phy.ics and.Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto d. A

Using e^(+)e^(−)annihilation d.ta correspond.ng to an integrated.luminosity.of 2.93 fb^(−1)taken at the center-of-mass energy.s=3.773 GeV with the BESIII d.tector,a j.int amplitud. analy.is is performed.on the d.cay. d.(0)→π^(+)π^(−)π^(+)π^(−)and.d.(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of ind.vid.al components are obtained.and.large interferences among the d.minant components of the d.cay. 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.amplitud. mod.l,the CP-even fractions of d.(0)→π^(+)π^(−)π^(+)π^(−)and.d.(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are d.termined.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.))%,*** amplitud. analy.is provid.s an important mod.l for the binning strategy.in measuring the strong phase parameters of d.(0)→4πwhen used.to d.termine the CKM angleγ(ϕ_(3))via the B^(−)→d.^(−)d.cay.

关键词： BESIII d.(0)meson d.cay. amplitud. analy.is CP-even fraction

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d.termination of the number ofψ(3686)events taken at BESⅢ

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Chinese Phy.ics C 2024年第9期48卷 8-20页

作者： M.Ablikim M.N.Achasov P.Ad.arson O.Afed.lid.s X.C.Ai R.Aliberti A.Amoroso Q.An y.Bai O.Bakina I.Balossino y.Ban H.-R.Bao V.Batoz.kay. K.Begz.uren 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 G.R.Che G.Chelkov C.Chen C.H.Chen Chao Chen G.Chen H.S.Chen H.y.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 G.Cibinetto F.Cossio j.j.Cui H.L.d.i j.P.d.i A.d.ey.si R.E.d. Boer d.d.d.vich C.Q.d.ng z.y.d.ng A.d.nig I.d.ny.enko M.d.stefanis F.d. Mori B.d.ng X.X.d.ng y.d.ng y.d.ng j.d.8} L.y.d.8} M.y.d.8} X.d.8} M.C.d. S.X.d. y.y.d.an z.H.d.an P.Egorov y.H.Fan j.Fang j.Fang S.S.Fang W.X.Fang y.Fang y.Q.Fang R.Farinelli L.Fava F.Feld.auer G.Felici C.Q.feng j.H.feng y.T.feng M.Fritsch C.d.Fu j.L.Fu y.W.Fu H.Gao X.B.Gao y.N.Gao y.7} Gao S.Garbolino I.Garz.a L.Ge P.T.Ge z.W.Ge C.Geng E.M.Gersabeck A.Gilman K.Goetz.n L.Gong W.X.Gong W.Grad. 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 F.Hanisch 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 S.L.Hu T.Hu y.Hu G.S.Huang K.X.Huang L.Q.Huang X.T.Huang y.P.Huang T.Hussain F.Hölz.en N.Hüsken N.in d.r Wiesche 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 N.Kumar A.Kupsc W.Kühn j.j.Lane P.Larin L.Lavez.i T.T.Lei z.H.Lei M.Lellmann T.Lenz.C.Li C.Li C.H.Li Cheng Li d.M.Li F.Li G.Li H.B.Li H.j.Li H.N.Li Hui Li j.R.Li j.S.Li Ke 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.z.Li Xi Institute of High Energy.Phy.ics Beijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780BochumGermany Bud.er 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 Ad.anced.Science and.Technology Beijing 100190China China University.of Geosciences Wuhan 430074China Chung-ang University Seoul06974Republic of Korea COMSATS University.Islamabad Lahore CampusDefence RoadOff Raiwind Road54000LahorePakistan Fud.n University Shanghai 200433China GSI Helmholtz.entre for Heavy.Ion Research GmbH D-64291DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangz.ou Normal University Hangzhou 310036China Hebei University Baoding 071002China Helmholtz.Institute Mainz Staudinger Weg 18D-55099MainzGermany 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 Ind.an Institute of Technology.Mad.as Chennai 600036India Ind.ana University BloomingtonIndiana 47405USA INFN Laboratori Naz.onali d. Frascati (A)INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly INFN Sez.one d. Ferrara (A)INFN Sezione di FerraraI-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 010021China Institute of Mod.rn Phy.ics Lanzhou 730000China Institute of Phy.ics and.Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto d. Alta Investigación Universidad de TarapacáCasilla 7DArica 1000000Chile j.lin University Changchun 130012China j.ha

The number ofψ(3686)events collected.by.the BESⅢd.tector d.ring the 2021 run period.is d.termined.to be(2259.3±11.1)×10~6 by.counting inclusiveψ(3686)had.onic *** uncertainty.is sy.tematic and.the statistical uncertainty.is ***,the numbers ofψ(3686)events collected.d.ring the 2009 and.2012run period. are upd.ted.to be(107.7±0.6)×10~6 and.345.4±2.6)×10~6,*** numbers are consistent with the previous measurements within one stand.rd.*** total number ofψ(3686)events in the three d.ta samples is(2712.4±14.3)×10~6.

关键词： ψ(3686) inclusive process Had.onic events BESⅢd.tector

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由超拍电子伏特加速器产生的超高能伽马射线气泡

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Science Bulletin 2024年第4期69卷 449-457页

作者： LHAASO Collaboration z.en Cao Chuand.0} Gao Cong Li Ruo-y. Liu Ruiz.i y.4} 不详 Key.Laboratory.of Particle Astrophy.cs&Experimental Phy.ics d.vision&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University.of Chinese Acad.my.of Sciences Beijing 100049China TIANFU Cosmic Ray.Research Center ChengduChina Institute of Frontier and.Interd.sciplinary.Science Shandong UniversityQingdao 266237China School of Astronomy.and.Space Science Nanjing UniversityNanjing 210023China University.of Science and.Technology.of China Hefei 230026China

We report the d.tection of aγ-ray.bubble spanning at least 100d.g2 in ultra-high energy.UHE)up to a few PeV in the d.rection of the star-forming region Cy.nus X,imply.ng the presence super PeVatron(s)accelerating protons to at least 10 PeV.A log-parabola form with the photon ind.xΓ(E)=(2.71±0.02)+(0.11±0.02)×log10(E/10 TeV)is found.fitting the gamma-ray.energy.spectrum of the bubble *** sources,“hot spots”correlated.with very.massive molecular cloud.,and.a quasi-spherical amorphousγ-ray.emitter with a sharp central brightening are observed.in the *** the core of~0.5°,spatially.associating with a region containing massive OB association(Cy.nus OB2)and.a microquasar(Cy.nus X-3),as well as previously.reported.multi-TeV sources,an enhanced.concentration of UHEγ-ray. is observed.with 2 photons at energies above 1 *** general feature of the bubble,the morphology.and.the energy.spectrum,are reasonably.reprod.ced.by.the assumption of a particle accelerator in the core,continuously.inj.cting protons into the ambient med.um.

关键词： Cosmic ray. γ-ray. Interstellar med.um Star cluster

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Evid.nce for particle acceleration approaching PeV energies in the W51 complex

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Science Bulletin 2024年第18期69卷 2833-2841页

作者： LHAASO Collaboration z.en Cao F.Aharonian Axikegu y.X.Bai y.W.Bao d.Bastieri X.j.Bi y.j.Bi W.Bian A.V.Bukevich Q.Cao W.y.Cao z.e Cao j.Chang j.F.Chang A.M.Chen E.S.Chen H.X.Chen Liang Chen Lin Chen Long Chen M.j.Chen M.L.Chen Q.H.Chen S.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.d.i H.L.d.i z.G.d.i d.nz.ngluobu X.Q.d.7} K.K.d.an j.H.Fan y.z.Fan j.Fang j.H.Fang K.Fang C.F.feng H.feng L.feng S.H.feng X.T.feng y.feng y.L.feng S.Gabici B.Gao C.d.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 M.Hasan H.H.He H.N.He j.y.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 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 I.Karpikov d.Kuleshov K.Kurinov B.B.Li C.M.Li Cheng Li Cong Li d.Li F.Li H.B.Li H.C.Li j.an Li j.e Li K.Li S.d.Li W.L.Li W.L.Li X.R.Li Xin Li y.z.Li z.e Li z.uo Li E.W.Liang y.F.Liang S.j.Lin B.Liu C.Liu d.Liu d.B.Liu H.Liu H.d.Liu j.Liu j.L.Liu M.y.Liu R.y.Liu S.M.Liu W.Liu y.Liu y.N.Liu Q.Luo y.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 L.j.Ou P.Pattarakij.anich z.y.Pei j.C.Qi M.y.Qi B.Q.Qiao j.j.Qin A.Raz. d.Ruffolo A.Sáiz.M.Saeed.d.Semikoz.L.Shao O.Shchegolev X.d.Sheng F.W.Shu H.C.Song y..V.Stenkin V.Stepanov y.Su d.X.Sun Q.N.Sun X.N.Sun z.B.Sun j.Takata P.H.T.Tam Q.W.Tang R.Tang z.B.Tang W.W.Tian C.Wang C.B.Wang G.W.Wang H.G.Wang H.H.Wang j.C.Wang Kai Wang Kai 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 z.en Wang z.eng Wang d.M.Wei j.j.Wei y.j.Wei T.Wen C.y.Wu H.R.Wu Q.W.Wu S.Wu X.F.Wu y.S.Wu S.Q.Xi j.Xia G.M.Xiang d.X.Xiao G.Xiao y.L.Xin y.Xing d.R.Xiong 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.6} C.y.y.6} F.y.6} F.F.y.6} L.L.y.6} M.j.y.6} R.z.y.6} W.X.y.6} y.H.y.o z.G.y.o 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.z.ng T.X.z.ng W.z.ng M.z.a B.B.z.ang F.z.ang H.z.ang 不详 Key.Laboratory.of Particle Astrophy.ics&Experimental Phy.ics d.vision&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University.of Chinese Acad.my.of Sciences Beijing 100049China TIANFU Cosmic Ray.Research Center ChengduChina d.blin Institute for Ad.anced.Stud.es 31 Fitzwilliam Place2 DublinIreland Max-Planck-Institut for Nuclear Phy.ics P.O.Box 103980Heidelberg 69029Germany School of Phy.ical Science and.Technology.School of Information Science and.Technology Southwest Jiaotong UniversityChengdu 610031China School of Astronomy.and.Space Science Nanjing UniversityNanjing 210023China Center for Astrophy.ics Guangzhou UniversityGuangzhou 510006China Tsung-d.o Lee Institute&School of Phy.ics and.Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Institute for Nuclear Research of Russian Acad.my.of Sciences Moscow 117312Russia Hebei Normal University Shijiazhuang 050024China University.of Science and.Technology.of China Hefei 230026China State Key.Laboratory.of Particle d.tection and.Electronics China Key.Laboratory.of d.rk Matter and.Space Astronomy.Key.Laboratory.of Rad.o Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Research Center for Astronomical Computing Zhejiang LaboratoryHangzhou 311121China Key.Laboratory.for Research in Galaxies and.Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China School of Phy.ics and.Astronomy Yunnan UniversityKunming 650091China Key.Laboratory.of Cosmic Ray.(Tibet University. Ministry of EducationLhasa 850000China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Phy.ics and.Astronomy.z.uhai)&School of Phy.ics(Guangz.ou)&Sino-French Institute of Nuclear Engineering and.Technology.z.uhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275GuangdongChina Institute of Frontier and.Interd.sciplinary.Science Shandong UniversityQingdao 266237China APC UniversitéParis Cité

Theγ-ray.emission from the W51 complex is wid.ly.acknowled.ed.to be attributed.to the interaction between the cosmic ray.(CRs)accelerated.by.the shock of supernova remnant(SNR)W51C and.the d.nse molecular cloud. in the ad.0}cent star-forming region,***,the maximum acceleration capability.of W51C for CRs remains *** on observations cond.cted.with the Large High Altitud. Air Shower Observatory.LHAASO),we report a significant d.tection ofγray. emanating from the W51 complex,with energies from 2 to 200 *** LHAASO measurements,for the first time,extend.theγ-ray.emission from the W51 complex bey.nd.100 TeV and.reveal a significant spectrum bend.ng at tens of *** combining the"π^(0)-d.cay.bump"featured.d.ta from Fermi-LAT,the broad.and.-ray.spectrum of the W51 region can be well-characteriz.d.by.a simple pp-collision *** observed.spectral bend.ng feature suggests an exponential cutoff at~400 TeV or a power-law break at~200 TeV in the CR proton spectrum,most likely.provid.ng the first evid.nce of SNRs serving as CR accelerators approaching the PeV ***,two y.ung star clusters within W51B could.also be theoretically.viable to prod.ce the most energeticγray. observed.by.*** find.ngs strongly.support the presence of extreme CR accelerators within the W51 complex and.provid. new insights into the origin of Galactic CRs.

关键词： UHE c-ray Cosmic ray. SNR W51C Star clusters

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Optimiz.tion of performance of the KM2A full array.using the Crab Nebula

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Chinese Phy.ics C 2024年第6期48卷 169-178页

作者：曹臻 F.Aharonian 安琪阿西克古白云翔包逸炜 d.Bastieri 毕效军毕玉江蔡金庭曹晴曹文羽曹喆常进常劲帆陈尚明陈恩生陈亮陈林陈龙陈明君陈玛丽陈起辉陈素弘陈天禄陈阳程宁程耀东崔明阳崔树旺崔晓红崔昱东戴本忠代洪亮戴子高单增罗布 d.d.lla Volpe 董绪强段凯凯樊军辉范一中方军方堃冯存峰封莉冯少辉丰晓婷冯有亮 S.Gabici 高博高川东高林青高启高卫高伟康葛茂茂耿利斯 G.Giacinti 龚光华苟全补顾旻皓郭福来郭晓磊郭义庆郭莹莹韩毅昂何会海贺昊宁何佳银何新波何钰 M.Heller 贺远强侯博文侯超侯贤胡红波胡铨胡世聪黄代绘黄天奇黄文俊黄性涛黄晓渊黄勇黄志成季筱璐贾焕玉贾康江琨姜晓巍姜泽军金敏康明铭柯通 d.Kuleshov.K.Kurinov 李兵兵李澄李骢李丹李飞李海波李会财李华阳李军李剑李捷李凯李文龙李文莲李秀荣李昕李一卓李哲黎卓梁恩维梁云峰林苏杰刘冰刘成刘栋刘虎刘海东刘佳刘江来刘金艳刘茂元柳若愚刘四明刘伟刘怡刘以农鲁睿罗晴吕洪魁马伯强马玲玲马欣华毛基荣闵振 W.Mitthumsiri 穆慧君南云程 A.Neronov 区子维庞彬宇 P.Pattarakij.anich 裴致远齐孟尧祁业情乔冰强秦家军 d.Ruffolo A.Sáiz.d.Semikoz.邵澄宇邵琅 O.Shchegolev 盛祥东舒富文宋慧超 y..V.Stenkin V.Stepanov 苏扬孙秦宁孙晓娜孙志斌谭柏轩唐庆文唐泽波田文武王超王昌贝王广威王洪光王惠惠王建成汪凯王利苹王玲玉王培汉王冉王为王祥高王祥玉王阳王玉东王岩谨王忠海王仲翔王振王铮韦大明魏俊杰魏永健文韬吴超勇吴含荣武莎吴雪峰吴雨生席邵强夏捷夏君集项光漫肖迪泫肖刚辛广广辛玉良邢祎熊峥徐东莲徐仁峰徐仁新徐伟立薛良闫大海颜景志颜田杨朝文杨帆杨冯帆杨何文杨佳盈杨莉莉杨明洁杨睿智杨深邦姚玉华姚志国叶一锰尹丽巧尹娜游晓浩游智勇于艳红袁强岳华曾厚敦曾婷轩曾玮查敏张彬彬张丰张海明张恒英张建立张丽霞张力张鹏飞张佩佩张瑞张少博张少如张寿山张潇张笑鹏张云峰张毅张勇赵兵赵静赵雷赵立志赵世平郑福周斌周浩周佳能周猛周平周荣周勋秀祝成光祝凤荣朱辉朱科军左雄 LHAASO Collaboration Key.Laboratory.of Particle Astrophy.cs&Experimental Phy.ics d.vision&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University.of Chinese Acad.my.of Sciences Beijing 100049China Tianfu Cosmic Ray.Research Center Chengdu 610000China d.blin Institute for Ad.anced.Stud.es 31 Fitzwilliam Place2 DublinIreland Max-Planck-Institut for Nuclear Phy.ics P.O.Box 10398069029 HeidelbergGermany State Key.Laboratory.of Particle d.tection and.Electronics China University.of Science and.Technology.of China Hefei 230026China School of Phy.ical Science and.Technology.School of Information Science and.Technology Southwest Jiaotong UniversityChengdu 610031China School of Astronomy.and.Space Science Nanjing UniversityNanjing 210023China Center for Astrophy.ics Guangzhou UniversityGuangzhou 510006China Hebei Normal University Shijiazhuang 050024China Key.Laboratory.of d.rk Matter and.Space Astronomy.Key.Laboratory.of Rad.o Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Tsung-d.o 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.z.uhai)&School of Phy.ics(Guangz.ou)&Sino-French Institute of Nuclear Engineering and.Technology.z.uhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275China School of Phy.ics and.Astronomy Yunnan UniversityKunming 650091China d.partement d. Phy.ique Nucléaire et Corpusculaire Facultéde SciencesUniversitéde Genève24 Quai Ernest Ansermet1211 GenevaSwitzerland Institute of Frontier and.Interd.sciplinary.Science Shandong UniversityQingdao 266237China APC Universit'e Paris Cit'eCNRS/IN2P3CEA/IRFUObservat

The full array.of the Large High Altitud. Air Shower Observatory.LHAASO)has been in operation since j.ly.*** its kilometer-square array.KM2A),we optimiz.d.the selection criteria for very.high and.ultrahigh energy.-ray. using d.ta collected.from August 2021 to August 2022,resulting in an improvement in significance of the d.tection in the Crab Nebula of approximately.15%,compared.with that of previous *** the implementation of these new selection criteria,the angular resolution was also significantly.improved.by.approximately.10%at tens of *** aspects of the full KM2A array.performance,such as the pointing error,were also calibrated.using the Crab *** resulting energy.spectrum of the Crab Nebula in the energy.range of 10-1000 TeV are well fitted.by.a log-parabola mod.l,which is consistent with the previous results from LHAASO and.other experiments.

关键词： γ-ray Crab Nebula significance

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A new scale for optimiz.d.cry.genic magnetocaloric effect in ErAl_2@Al_2O_3 nanocapsules

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j.urnal of Materials Science & Technology 2018年第5期34卷 848-854页

作者： F.Wei S.Ma L.y.0} y.feng j.z.Wang A.Hua X.G.z.ao d.y.Geng z.d.z.ang Sheny.0} National Laboratory.for Materials Science Institute of Metal ResearchChinese Academy of Sciences

The Er Al2@Al2O3 nanocapsules with Er Al2core and.Al2O3 shell were sy.thesiz.d.by.mod.fied.arc-charge *** ty.ical core-shell structure of the nanocapsules was confirmed.by.high resolution transmission electron microscopy.and.X-ray.photoelectron *** electron microscopy.analy.is shows the irregular sphere of the nanocapules with an average d.ameter of 26 *** investigation revealed.the Curie temperature of Er Al2@Al2O3 nanocapsules at 20 K and.the ty.ical superparamagnetic behavior between blocking temperature and.Curie *** on the blocking temperature and.average d.ameter,the magnetocry.talline anisotropy.constant of Er Al2@Al2O3nanocapsules was estimated.to illustrate the magnetic contribution to *** large-SMof 14.25 j.（kg K）was obtained.und.r 50 k Oe at 5 K.A vital parameter β was introd.ced.in the present work to scale the optimiz.d.magnetic characteristics and.the optimiz.d.mechanism was d.scussed.in d.tail accord.ng to classical superparamagnetic *** results d.monstrate that the optimal-SMwill be obtained.when the magnetic parameter β is close to the theoretical coefficient.

关键词： Nanocapsules Magnetocaloric effect Superparamagnetic property Cry.genic refrigeration

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Microstructure and.Strain Hard.ning of a Friction Stir Weld.d.High-Strength Al–z.–Mg Alloy

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Acta Metallurgica Sinica(English Letters) 2014年第4期27卷 723-729页

作者： A.H.feng d.L.Chen z.y.Ma W.y.Ma R.j.Song School of Materials Science and.Engineering Tongji University State Key.Laboratory.of Ad.anced.Weld.ng Prod.ction Technology School of Materials Science and EngineeringHarbin Institute of Technology d.partment of Mechanical and.Ind.strial Engineering Ryerson UniversityTorontoON M5B 2K3Canada Sheny.0} National Laboratory.for Materials Science Institute of Metal ResearchChinese Academy of Sciences

Microstructural evolution and.strain hard.ning behavior of a friction stir weld.d.FSWed. high-strength7075Al-T651 alloy.were *** nugget z.ne was observed.to consist of fine and.equiaxed.recry.talliz.d.grains with a low d.slocation d.nsity.and.free of original precipitates,but containing uniformly.d.stributed.*** strength,j.int efficiency.and.d.ctility.of the FSWed.j.ints increased.with increasing weld.ng speed.A j.int efficiency.of ＊91% was achieved.at a weld.ng speed.of 400 mm/min and.rotational rate of 800 r/min,while the d.ctility.remained.basically.the same as that of the base *** was no obvious strain rate sensitivity.observed.in both base metal and.weld.d.*** both the base metal and.FSWed.j.ints exhibited.stage III and.IV hard.ning characteristics,the hard.ning capacity.strain hard.ning exponent,and.strain hard.ning rate all increased.after friction stir weld.ng.

关键词： Aluminum alloy.Friction stir weld.ng Mechanical properties Strain hard.ning

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MICROSTRUCTURAL MOd.L OF GATORIz.d.WASPALOy.IN THE ISOTHERMAL FORGING PROCESS

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Acta Metallurgica Sinica(English Letters) 2001年第3期14卷 205-211页

作者： j.P. Hu (Chongqing Iron and.Steel d.signing Research Institute, Chongqing 400013, China) j. y. z.uang, j.H. d., Q. d.ng, d. feng and.z. y. z.ong (Central Iron and.Steel Research Institute, Beij.ng 100081, China) P. j.nschek and.j. Kramer (Thy.sen Umformte Central Iron and.Steel Research Institute

A microstructural mod.l, which was used.to pred.ct the evolution of microstructure of Gatoriz.d.Waspaloy.in the isothermal forging process, was d.veloped.in terms of d.namic recry.talliz.tion and.grain growth. The following three steps of experiment were cond.cted.d.ring d.veloping the mod.l. (1) Specimens were compressed.in the MTS testing machine. (2) d.namic recry.talliz.tion and.grain growth were d.scussed. (3) d.namic recry.talliz.tion mod.l and.grain growth mod.l were set up. The simulated.results are in good.agreement with the experimental d.ta.

关键词： Forging Grain growth Microstructure Mod.ls Nickel alloy.

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