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STCF conceptual design report (Volume 1): Physics & detector

Frontiers of physics 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.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko 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.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.Lyu X.R.Lyu 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.Ouyang 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.Pyata 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 Physics Novosibirsk 630090Russia CAS Key Laboratory of Theoretical Physics 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 Polytechnique 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 Physics 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 Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China jilin University Changch

The superτ-charm facility(STCF)is an electron–positron collider proposed by the Chinese particle physics *** 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 exploring the asymmetry 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 physics beyond the Standard *** STCF project in China is under development with an extensive R&D *** document presents the physics opportunities at the STCF,describes conceptual designs of the STCF detector system,and discusses future plans for detector R&D and physics case studies.

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

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STUDY ON PREPARATION, COMPLEX PERMITTIVITY,PERMEABILITY AND MICROWAVE PROPERTIES OF BaZnzCo(2-z)Fe16O27/SiO2 MICROCRYSTALLINE GLASS CERAMICS

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Acta Metallurgica Sinica(English Letters) 2003年第6期16卷 421-427页

作者： h.j.zhang X.L.jia X.Yao L.Y.zhang highTemperatureCeramicsInstitute ZhengzhouUniversityZhengzhou450052China FunctionalMaterialsResearchLaboratory TongjiUniversityShanghai200092China

BaZnzCo2-zFe16O27/SiO2 microcrystalline glass ceramics with Z=0.0, 0.5, 0.8 and 1.1 were prepared at temperature 1200℃ for 5h by citrate sol-gel process. The complex dielectric constant and complex permeability of BaZnzCo2-zFe16 O27/SiO2-paraffin wax composites had been measured. Both the complex dielectric constant and dielectric loss exhibit almost no variation with frequency in 0.1-6.0Ghz. The real part of permeability decreases with increasing frequency for all samples, and the imaginary part of permeability exhibits a clear resonance peak at 1.44Ghz for Co2 W/SiO2, 1.32Ghz for Zn0.5Co1.5 W/SiO2, 1.20Ghz for Zn0.8Co1.2W/SiO2, and 1.08Ghz for Zn1.1 Co0.9 W/SiO2. It is also showed that the content of zinc has a close effect on the magnetic properties of BaZnzCo2-zFe16O27/SiO2 microcrystalline glass ceramics, the greater the zinc content, the higher the values of imaginary part of permeability and magnetic loss.

关键词： BaZnz Co2-zFe16O27/SiO2 microcrystalline glass ceramics,sol-gel microwave property

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Relations between SMBh Parameters and jet Generation and Efficiency in Blazars

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Research in Astronomy and Astrophysics 2023年第11期23卷 67-83页

作者： h.zhang h.j.zhang Department of Physics Yunnan Normal UniversityKunming 650092China

We analyzed the relationship between several basic parameters describing supermassive black holes such as jet power,black hole spin,accretion disk magnetic field,black hole mass,*** found that there is a general correlation between these parameters,such as jet power is significantly positively correlated with black hole spin,while black hole mass is significantly negatively correlated with black hole *** apprehend these relationships,we consider the Blandford–Znajek model to be superior to the Blandford–Payne *** is also found that the intrinsic gamma luminosity of the FSRQs has a positive correlation with the accretion disk magnetic field,while the intrinsic gamma luminosity of the BL Lacs has a negative correlation with the accretion disk magnetic field.A feedback effect may exist between accretion disk accretion rate and magnetic field,which may be the key to the evolution between BL Lacs and *** is no significant difference in the jet power and jet generation efficiency of FSRQs and BL Lacs,which suggests that the jets are generated by the same *** contribution rate of accretion rate to jet generation efficiency is high,while the contribution rate of accretion rate to jet power is very low.

关键词： galaxies:evolution galaxies:fundamental parameters galaxies:jets

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A comparison study of Ce/La and Ca microalloying on the bio-corrosion behaviors of extruded Mg-Zn alloys

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journal of Magnesium and Alloys 2020年第4期8卷 1269-1280页

作者： j.h.Chu L.B.Tong Z.h.jiang D.N.Zou Q.j.Wang S.F.Liu h.j.zhang School of Metallurgical Engineering Xi'an University of Architecture and TechnologyXi'an 710055China State Key Laboratory of Rare Earth Resources Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Key Lab of Automobile Materials College of Materials Science and EngineeringJilin UniversityNanling CampusChangchun 130025China

The influences of Ca and Ce/La microalloying on the microstructure evolution and bio-corrosion resistances of extruded Mg-Zn alloys have been systematically investigated in the current *** with single Ca or Ce/La addition,the Ca-Ce/La cooperative microalloying results in an outstanding grain refinement,because the fine secondary phase particles effectively hinder the recrystallized grain *** coarse Ca2Mg6Zn3 phases promote the formation of Ca3(PO4)2 or hydroxyapatite particles during the immersion process and accelerate the dissolution of the corrosion product film,which destroys its integrity and results in the deterioration of anti-corrosive *** Ce/La elements can be dispersed within the conventional Mg7Zn3 phases,which reduce the internal galvanic corrosion between Mg matrix and the secondary phases,leading to an obvious improvement of corrosion ***,the Ca-Ce/La cooperative microalloying achieves a homogenous fine-grained microstructure and improves the protective ability of surface film,which will pave a new avenue for the design of biomedical Mg alloys in the coming future.

关键词： Extruded Mg-Zn alloy Ca and Ce/La microalloying Microstructure evolution Bio-corrosion behaviors

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Passive Q-switching and Q-switched mode-locking operations of 2 μm Tm:CLNGG laser with MoS2 saturable absorber mirror

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Photonics Research 2015年第2期3卷 47-50页

作者： L.C.Kong G.Q.Xie P.Yuan L.j.Qian S.X.Wang h.h.Yu h.j.zhang Key Laboratory for Laser Plasmas (Ministry of Education) IFSA Collaborative Innovation Center Department of Physics and Astronomy Shanghai Jiao Tong University State Key Laboratory of Crystal Materials and Institute of Crystal Materials Shandong University

With MoS2 as saturable absorber, passive Q-switching and Q-switched mode-locking operations of a Tm-doped calcium lithium niobium gallium garnet（Tm:CLNGG） laser were experimentally demonstrated. The Q-switched laser emitted a maximum average output power of 62 mW and highest pulse energy of 0.72 μj. Q-switched mode locking was also obtained in the experiment. The research results will open up applications of MoS2 at the mid-infrared wavelength.

关键词： mode rate m Tm:CLNGG laser with MoS2 saturable absorber mirror Passive Q-switching and Q-switched mode-locking operations of 2 Tm

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Reducing the tension-compression yield asymmetry of extruded Mg-Zn-Ca alloy via equal channel angular pressing

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journal of Magnesium and Alloys 2015年第4期3卷 302-308页

作者： L.B.Tong M.Y.Zheng S.Kamado D.P.zhang j.Meng L.R.Cheng h.j.zhang State Key Laboratory of Rare Earth Resources Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Department of Mechanical Engineering Nagaoka University of TechnologyNagaoka 940-2188Japan

The influence of equal channel angular pressing on the tension-compression yield asymmetry of extruded Mg-5.3 Zn-0.6 Ca(weight percent)alloy has been *** microstructure was obviously refined by the large strain during the equal channel angular pressing,accompanied with very fine Ca_(2)Mg_(6)Zn_(3) phases with average diameter of 70 *** weak tension-compression yield asymmetry after equal channel angular pressing is mainly attributed to the reduced volume fraction of extension twinning during the compression,because the slope(k)of twinning in hall-Petch relationship is higher than that of dislocation slip,and the twinning deformation is difficult to take place with decreasing grain *** basal slip is more active in the alloy after equal channel angular pressing,due to the non-basal texture components,which hinders the twinning activation and reduces the yield ***,the presence of fine precipitate restricts the twinning activation,which also contributes to the reduction of yield asymmetry.

关键词： Mg-Zn-Ca alloy Yield asymmetry Equal channel angular pressing Twinning Precipitates

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Electronic structure and photocatalytic properties of copper-doped CaTiO3

Electronic structure and photocatalytic properties of copper...

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第九届全国氢能学术会议

作者： h.j.zhang,G.Chen,Y.X.Li,Y.j.Teng harbin Institute of Technology,China

Doping foreign elements into a semiconductor with wide band gap to create a new donor or acceptor level in the forbidden band is known to be one of the methods for developing visible-light driven *** this paper,the effects of divalent metal copper ion doping on the photocatalytic activity of CaTiO powder for overall water splitting were

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Band structure and photocatalytic activities for h2 production of ABi2Nb2O9(A=Ca,Sr,Ba)

Band structure and photocatalytic activities for H2 producti...

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第九届全国氢能学术会议

作者： Y.X.Li,G Chen,h.j.zhang,Z.S Lv harbin Institute of Technology,China

Layered metal oxides have been demonstrated to be highly active photocatalysts under light *** was explained that these layered materials use their interlayer space as reaction sites,where electron-hole recombination process could be retarded by physical separation of electron and hole pairs generated by *** this paper,a new series of layered perovskite photocatalysts,ABiNbO(A=Ca,Sr,Ba),were synthesized by the

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A novel electrocatalyst for oxygen reduction reaction based on pyrolyzed non-noble metal chelate

A novel electrocatalyst for oxygen reduction reaction based ...

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第九届全国氢能学术会议

作者： h.j.zhang,Z.F.Ma,Q.Z.jiang,X.X.Yuan,Y.C.hu,D.Liu Shanghai jiao Tong University,China

＜正＞Finding a low-cost electrocatalyst for oxygen reduction reaction（ORR） is an important issue for the commercialization of PEMFCs,due to the higher loading of Pt at the cathode as compared to the *** the present presentation,a new and promising non-noble metal cobalt-based electrocatalyst for ORR is prepared with sol-gel method from a carbon-supported

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伊豆—小笠原俯冲带板片的形态与形变研究

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世界地震译丛 2020年第5期51卷 566-577页

作者： h.j.zhang F.Wang R.Myhill h.Guo 刘思青(译) 常利军(校) 不详广州海洋地质调查局中国地震局地球物理研究所

地震层析成像方法为俯冲板片的形态、形变与流变(间接)提供了独特的约束条件。本文利用远震双差P波成像技术对伊豆—小笠原板片的复杂结构进行了非常清晰的成像,结果显示位于26.5°N^28°N之间的地幔过渡带(MTZ)中存在一个板片撕裂。撕... 详细信息

地震层析成像方法为俯冲板片的形态、形变与流变(间接)提供了独特的约束条件。本文利用远震双差P波成像技术对伊豆—小笠原板片的复杂结构进行了非常清晰的成像,结果显示位于26.5°N^28°N之间的地幔过渡带(MTZ)中存在一个板片撕裂。撕裂以北,板片在MTZ发生折叠,在褶皱枢纽的正上方,剪切带内初期的黏性耗散形成了P波衰减区。撕裂以南,在MTZ底部板片发生翻转且平铺于MTZ的底部。2015年小笠原地震(M W约为7.9)的震源深度约为680km,该地震发生在翻转板片的最北端。伊豆—小笠原板片的局部撕裂、剪切和屈曲表明,其经过上地幔和地幔过渡带后仍然保持了较高的黏滞性。

关键词：地震层析成像地幔过渡带震源深度褶皱枢纽俯冲带剪切带远震上地幔

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