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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.h. 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.h.ang W.Q.huang x.T.huang x.J.huang y.B.huang y.S.huang N.hüsken V.Ivanov Q.P.Ji J.J.Jia S.Jia Z.K.Jia h.B.Jiang J.Jiang S.Z.Jiang J.B.Jiao Z.Jiao h.J.Jing 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.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 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.echnique Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University.Frankfurt D-60325 Frankfurt am MainGermany Guangx. Normal University Guilin 541004China Guangx. 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 Jilin 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 unique platform for ex.loring 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 ex.tic hadrons and phy.ics bey.nd the Standard *** STCF project in China is under development with an ex.ensive 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

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.Batozskay. 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 JA.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.h.u x.T.hou y.R.hou Z.L.hou B.y.h. h.M.hu J.F.hu T.hu y.h. 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.Jackson S.Janchiv J.h.Jeong Q.Ji Q.P.Ji W.Ji x.B.Ji x.L.Ji y.y.Ji x.Q.Jia Z.K.Jia D.Jiang h.B.Jiang P.C.Jiang S.S.Jiang T.J.Jiang x.S.Jiang y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin y.Jin M.Q.Jing x.M.Jing T.Johansson 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 Guangx. Normal University Guilin 541004China Guangx. 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 joint 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

Water modeling on fluid flow and mix.ng phenomena in a BOF steelmaking converter

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Journal of Iron and Steel Research International 2024年第3期31卷 595-607页

作者： x.n-y. Cai hao-jian duan ding-han Li Anjun x. Li-feng Zhang School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing 100083China School of Mechanical and Materials Engineering North China University of TechnologyBeijing 100144China

A 1∶8 phy.ical water model was constructed to investigate the fluid flow and mix.ng phenomena in the basic ox.gen furnace(BOF)*** particle image velocimetry.was employ.d to measure the velocity.distribution of the bath and the high-speed camera was applied to capture the cavity.shape in the combined blowing BOF *** mix.ng time for varied operating conditions was measured by.the stimulus-response *** cavity.depth increased with the decrease in the lance height and the increase in the top gas flow rate while the bottom blowing gas had little influence on the cavity.*** minimum cavity.depth was obtained under the condition of a 69.8 m^(3)/h top gas flow rate,a 287.5 mm lance height and a 0.93 m^(3)/h bottom blowing gas flow rate,which was 161.2 *** mix.ng time decreased as the lance height decreased and the top blowing gas flow rate *** mix.ng time was first decreased and then increased with the increase in the bottom gas flow *** the condition of 69.8 m^(3)/h gas flow rate of top blowing,the 287.5 mm lance height and the 0.93 m^(3)/h gas flow rate of bottom blowing,the mix.ng time in the converter was 48.65 *** empirical formula between the stirring power and the mix.ng time in the converter was calculated.

关键词： Water model Fluid flow Particle image velocimetry Mix.ng time BOF converter

Determination 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.Adlarson O.Afedulidis x.C.Ai R.Aliberti A.Amoroso Q.An y.Bai O.Bakina I.Balossino y.Ban h.-R.Bao V.Batozskay. 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 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.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.ding x.x.ding y.ding y.ding J.Dong L.y.Dong M.y.Dong x.Dong M.C.Du S.x.Du y.y.duan Z.h.duan 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.Feldbauer 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.ng Gao S.Garbolino I.Garzia L.Ge P.T.Ge Z.W.Ge C.Geng E.M.Gersabeck A.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 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.h.u x.T.hou y.R.hou Z.L.hou B.y.h. h.M.hu J.F.hu S.L.hu T.hu y.h. G.S.huang K.x.huang L.Q.huang x.T.huang y.P.huang T.hussain F.hölzken N.hüsken N.in der Wiesche J.Jackson S.Janchiv J.h.Jeong Q.Ji Q.P.Ji W.Ji x.B.Ji x.L.Ji y.y.Ji x.Q.Jia Z.K.Jia D.Jiang h.B.Jiang P.C.Jiang S.S.Jiang T.J.Jiang x.S.Jiang y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin y.Jin M.Q.Jing x.M.Jing T.Johansson 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.Lavezzi 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 x. Institute of high Energy.Phy.ics Beijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780BochumGermany 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 Road54000LahorePakistan Fudan University Shanghai 200433China GSI helmholtzcentre for heavy.Ion Research Gmbh D-64291DarmstadtGermany Guangx. Normal University Guilin 541004China Guangx. University Nanning 530004China hangzhou 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 Indian Institute of Technology.Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati (A)INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara (A)INFN Sezione di FerraraI-44122FerraraItaly(B)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 Alta Investigación Universidad de TarapacáCasilla 7DArica 1000000Chile Jilin University Changchun 130012China Joha

The number ofψ(3686)events collected by.the BESⅢdetector during the 2021 run period is determined to be(2259.3±11.1)×10~6 by.counting inclusiveψ(3686)hadronic *** uncertainty.is sy.tematic and the statistical uncertainty.is ***,the numbers ofψ(3686)events collected during the 2009 and 2012run periods are updated to be(107.7±0.6)×10~6 and(345.4±2.6)×10~6,*** numbers are consistent with the previous measurements within one standard *** total number ofψ(3686)events in the three data samples is(2712.4±14.3)×10~6.

关键词： ψ(3686) inclusive process hadronic events BESⅢdetector

Evidence 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 Zhen Cao F.Aharonian Ax.kegu y.x.Bai y.W.Bao D.Bastieri x.J.Bi y.J.Bi W.Bian A.V.Bukevich Q.Cao W.y.Cao Zhe 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.Dai h.L.Dai Z.G.Dai Danzengluobu x.Q.Dong K.K.duan 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.h. y.h. 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.h.ang y.h.ang x.L.Ji h.y.Jia K.Jia K.Jiang x.W.Jiang Z.J.Jiang M.Jin 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 Jian Li Jie Li K.Li S.D.Li W.L.Li W.L.Li x.R.Li x.n Li y.Z.Li Zhe Li Zhuo 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.Pattarakijwanich Z.y.Pei J.C.Qi M.y.Qi B.Q.Qiao J.J.Qin A.Raza 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 Zhen wang Zheng 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.x. J.x.a G.M.x.ang D.x.x.ao G.x.ao y.L.x.n y.x.ng D.R.x.ong Z.x.ong D.L.x. R.F.x. R.x.x. W.L.x. L.x.e D.h.y.n J.Z.y.n T.y.n C.W.y.ng C.y.y.ng F.y.ng F.F.y.ng L.L.y.ng M.J.y.ng R.Z.y.ng W.x.y.ng 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.Zeng T.x.Zeng W.Zeng M.Zha B.B.Zhang F.Zhang h.Zhang 不详 Key.Laboratory.of Particle Astrophy.ics&Ex.erimental 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 ChengduChina Dublin Institute for Advanced Studies 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-Dao Lee Institute&School of Phy.ics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Institute for Nuclear Research of Russian Academy.of Sciences Moscow 117312Russia hebei Normal University Shijiazhuang 050024China University.of Science and Technology.of China Hefei 230026China State Key.Laboratory.of Particle Detection and Electronics China Key.Laboratory.of Dark Matter and Space Astronomy.Key.Laboratory.of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Research Center for Astronomical Computing Zhejiang LaboratoryHangzhou 311121China Key.Laboratory.for Research in Galax.es 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.Zhuhai)&School of Phy.ics(Guangzhou)&Sino-French Institute of Nuclear Engineering and Technology.Zhuhai) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275GuangdongChina Institute of Frontier and Interdisciplinary.Science Shandong UniversityQingdao 266237China APC UniversitéParis Cité

Theγ-ray.emission from the W51 complex.is widely.acknowledged to be attributed to the interaction between the cosmic ray.(CRs)accelerated by.the shock of supernova remnant(SNR)W51C and the dense molecular clouds in the adjacent star-forming region,***,the max.mum acceleration capability.of W51C for CRs remains *** on observations conducted with the Large high Altitude Air Shower Observatory.LhAASO),we report a significant detection ofγray. emanating from the W51 complex.with energies from 2 to 200 *** LhAASO measurements,for the first time,ex.end theγ-ray.emission from the W51 complex.bey.nd 100 TeV and reveal a significant spectrum bending at tens of *** combining the"π^(0)-decay.bump"featured data from Fermi-LAT,the broadbandγ-ray.spectrum of the W51 region can be well-characterized by.a simple pp-collision *** observed spectral bending feature suggests an ex.onential cutoff at~400 TeV or a power-law break at~200 TeV in the CR proton spectrum,most likely.providing the first evidence of SNRs serving as CR accelerators approaching the PeV ***,two y.ung star clusters within W51B could also be theoretically.viable to produce the most energeticγray. observed by.*** findings strongly.support the presence of ex.reme CR accelerators within the W51 complex.and provide new insights into the origin of Galactic CRs.

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

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 Zhen Cao Chuandong Gao Cong Li Ruo-y. Liu Ruizhi y.ng 不详 Key.Laboratory.of Particle Astrophy.cs&Ex.erimental 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 ChengduChina Institute of Frontier and Interdisciplinary.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 detection of aγ-ray.bubble spanning at least 100deg2 in ultra-high energy.UhE)up to a few PeV in the direction 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 index.(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 clouds,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.reproduced by.the assumption of a particle accelerator in the core,continuously.injecting protons into the ambient medium.

关键词： Cosmic ray. γ-ray. Interstellar medium Star cluster

Residual alkali-evoked cross-linked poly.er lay.r for anti-air-sensitivity.LiNi_(0.89)Co_(0.06)Mn_(0.05)O_(2)cathode

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Journal of Energy.Chemistry 2024年第5期92卷 450-458页

作者： Chao Zhao x.ebao Li y.n Zhao Jingjing he y.anpeng Cao Wei Luo ding wang Jianguo duan x.anshu wang Baohua Li National and Local Joint Engineering Research Center of Lithium-ion Batteries and Materials Preparation Technology Key Laboratory of Advanced Battery Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093YunnanChina School of Materials Science and Engineering Central South UniversityChangsha 410083HunanChina Institute of Materials Research Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055Guangdong China City.College Kunming University of Science and TechnologyKunming 650051YunnanChina

high-energy.density.lithium-ion batteries(LIBs)with lay.red high-nickel ox.de cathodes(LiNi_(x.Co_(y.Mn_(1-x.y.O_(2),x.0.8)show great promise in consumer electronics and vehicular ***,LiNi_(x.Co_(y.Mn_(1-x.y.O_(2)faces challenges related to capacity.decay.caused by.residual alkalis owing to high sensitivity.to *** address this issue,we propose a hazardous substances upcy.ling method that fundamentally.mitigates alkali content and concurrently.induces the emergence of an anti-air-sensitive lay.r on the cathode *** the neutralization of poly.cry.ic acid(PAA)with residual alkalis and then coupling it with 3-aminopropy. triethox.silane(Kh550),a stable and ion-conductive cross-linked poly.er lay.r is in situ integrated into the LiNi_(0.89)Co_(0.06)Mn_(0.05)O_(2)(NCM)*** characterization and measurements demonstrate its *** NCM material ex.ibits impressive cy.ling performance,retaining 88.4%of its capacity.after 200 cy.les at 5 C and achieving an ex.raordinary.specific capacity.of 170.0 mA h g^(-1) at 10 ***,this lay.r on the NCM efficiently.suppresses unfavorable phase transitions,severe electroly.e degradation,and CO_(2)gas evolution,while maintaining commendable resistance to air *** surface modification strategy.shows widespread potential for creating air-stable LiNi_(x.Co_(y.Mn_(1-x.y.O_(2)cathodes,thereby.advancing high-performance LIBs.

关键词： Lithium-ion batteries Nickel-rich lay.red cathode Residual alkalis Cross-linked poly.e rmodification Airsensitivity

Optimization 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.della 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.Pattarakijwanich 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&Ex.erimental 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 Chengdu 610000China Dublin Institute for Advanced Studies 31 Fitzwilliam Place2 DublinIreland Max.Planck-Institut for Nuclear Phy.ics P.O.Box 10398069029 HeidelbergGermany State Key.Laboratory.of Particle Detection 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 Dark Matter and Space Astronomy.Key.Laboratory.of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Tsung-Dao Lee Institute&School of Phy.ics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Key.Laboratory.for Research in Galax.es 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 UniversityZhuhai 519000&Guangzhou 510275China School of Phy.ics and Astronomy Yunnan UniversityKunming 650091China Département de Phy.ique Nucléaire et Corpusculaire Facultéde SciencesUniversitéde Genève24 Quai Ernest Ansermet1211 GenevaSwitzerland Institute of Frontier and Interdisciplinary.Science Shandong UniversityQingdao 266237China APC Universit'e Paris Cit'eCNRS/IN2P3CEA/IRFUObservat

The full array.of the Large high Altitude Air Shower Observatory.LhAASO)has been in operation since July.*** its kilometer-square array.KM2A),we optimized the selection criteria for very.h.gh and ultrahigh energy.-ray. using data collected from August 2021 to August 2022,resulting in an improvement in significance of the detection in the Crab Nebula of approx.mately.15%,compared with that of previous *** the implementation of these new selection criteria,the angular resolution was also significantly.improved by.approx.mately.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 model,which is consistent with the previous results from LhAASO and other ex.eriments.

关键词： γ-ray Crab Nebula significance

Ethanol steam reforming over Ni/ZSM-5 nanosheet for hy.rogen production

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Chinese Journal of Chemical Engineering 2024年第3期67卷 247-256页

作者： Porapak Suriy. Shanshan x. Shengzhe ding Saray.te Chansai y.lai Jiao Joseph hurd Daniel Lee y.x.n Zhang Christopher hardacre Prasert Reubroy.h.roen x.aolei Fan Department of Chemical Engineering School of EngineeringThe University of ManchesterManchester M139PLUnited Kingdom Program of Petrochemistry.and Poly.er Science Faculty of ScienceChulalongkorn UniversityBangkok10330Thailand Sheny.ng National Laboratory.for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Liaoning Academy.of Materials Shenyang 110167China Center of Ex.ellence in Cataly.is for Bioenergy.and Renewable Chemicals(CBRC) andDepartment of Chemical TechnologyFaculty of ScienceChulalongkorn UniversityBangkok 10330Thailand Nottingham Ningbo China Beacons of Ex.ellence Research and Innovation Institute University of Nottingham Ningbo ChinaNingbo315100China

Compared to reforming reactions using hy.rocarbons,ethanol steam reforming(ESR)is a sustainable alternative for hy.rogen(h_(2))production since ethanol can be produced sustainably.using *** work ex.lores the cataly.t design strategies for preparing the Ni supported on ZSM-5 zeolite cataly.ts to promote ***,two-dimensional ZSM-5 nanosheet and conventional ZSM-5 cry.tal were used as the cataly.t carriers and two sy.thesis strategies,i.e.,in situ encapsulation and wet impregnation method,were employ.d to prepare the *** on the comparative characterization of the cataly.ts and comparative cataly.ic assessments,it was found that the combination of the in situ encapsulation sy.thesis and the ZSM-5 nanosheet carrier was the effective strategy.to develop cataly.ts for promoting h_(2) production via ESR due to the improved mass transfer(through the 2-D structure of ZSM-5 nanosheet)and formation of confined small Ni nanoparticles(resulted via the in situ encapsulation sy.thesis).In addition,the resulting ZSM-5 nanosheet supported Ni cataly.t also showed high Ni dispersion and high accessibility.to Ni sites by.the reactants,being able to improve the activity.and stability.of cataly.ts and suppress metal sintering and coking during ESR at high reaction ***,the Ni supported on ZSM-5 nanosheet cataly.t prepared by.encapsulation showed the stable performance with~88% ethanol conversion and~65% h_(2) y.eld achieved during a 48-h longevity.test at 550-C.

关键词： ZSM-5 nanosheet In situ encapsulation Ni cataly.t Ethanol steam reforming hy.rogen production