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Implications on the origin of cosmic rays in light of 10 TV spectral softenings

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Frontiers of physics 2020年第2期15卷 101-109,F0004页

作者： Cliuan Yue Peng-xiong Ma Qiang Yuan Yi-Zhong Fan Zhan-Fang Chen Ming-Yang cui Hao-Ting Dai Tie-Kuang Dong xiaoyuan Huang Wei Jiang Shi-Jun Lei xiang Li cheng-Ming liu Hao liu Yang liu Chuan-Ning Luo Xu Pan wen-xi Peng Rui Qiao Yi-feng Wei Li-Bo Wu Zhi-Hui Xu Zun-Lei Xu Guan-wen Yuan Jing-Jing Zang Ya-Peng Zhang Yong-Jie Zhang yun-Long Zhang Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210033China School of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China Center for High Energy Physics Peking UniversityBeijing 100871China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Institute of Modem Physics Chinese Academy of SciencesLanzhou 730000China

Precise measurements of the energy spectra of cosmic rays(CRs)show various kinds of features deviating from single power-laws,which give very interesting and important implications on their origin and *** measurements from a few balloon and space experiments indicate the existence of spectral softenings around 10 TV for protons(and probably also for Helium nuclei).Very recently,the DArk Matter Particle Explorer(DAMPE)measurement about the proton spectrum clearly reveals such a softening with a high *** we study the implications of these new measurements,as well as the groundbased indirect measurements,on the origin of *** find that a single component of CRs fails to fit the spectral softening and the air shower experiment data *** the framework of multiple components,we discuss two possible scenarios,the multiple source population scenario and the background plus nearby source *** scenarios give reasonable fits to the wide-band data from TeV to 100 PeV *** the anisotropy observations,the nearby source model is favored.

关键词： cosmic rays

First proof-of-principle experiment with the post-accelerated isotope separator on-line beam at BRIF:measurement of the angular distribution of ^(23)Na+^(40)Ca elastic scattering

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Nuclear Science and Techniques 2021年第5期32卷 101-106页

作者： Wei Nan Bing Guo cheng-Jian Lin Lei Yang Dong-xi Wang Yang-Ping Shen Bing Tang Bao-Qun cui Tao Ge Yin-Long Lyu Hui-Ming Jia yun-Ju Li Chen Chen Li-Hua Chen Qi-wen Fan xin-Yue Li Gang Lian Jian-cheng liu Tian-Peng Luo Nan-Ru Ma Rui-Gang Ma xie Ma Ying-Jun Ma Wei-Ke Nan Dan-Yang Pang You-Bao Wang Pei-Wei wen feng Yang Yong-Jin Yao Sheng Zeng Hao Zhang Fu-Peng Zhong Shan-Hao Zhong Zhi-Hong Li Tian-Jue Zhang Wei-Ping liu BRIF Collaboration China Institute of Atomic Energy(CIAE) P.O.Box 275(10)Beijing 102413China Department of Physics Guangxi Normal UniversityGuilin 541004China College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875China School of Physics Beihang UniversityBeijing 100191China Key Laboratory of Advanced Nuclear Materials and Physics Beihang UniversityBeijing 100191China

The reaction dynamics of exotic nuclei near the drip line is one of the main research topics of current *** scattering is a useful probe for investigating the size and surface diffuseness of exotic *** development of rare isotope accelerators offers opportunities for such *** date,many relevant measurements have been performed at accelerators using the projectile fragmentation technique,while the measurements at accelerators using isotope separator on-line(ISOL)systems are still quite *** this work,we present the first proof-of-principle experiment with a post-accelerated ISOL beam at the Beijing Radioactive Ion Beam Facility(BRIF)by measuring the angular distribution of elastic scattering for the stable nucleus^(23)Na from the doubly magic nucleus^(40)Ca at energies above the Coulomb *** angular distribution measured by a silicon strip detector array in a scattering chamber using the ISOL beam at BRIF is in good agreement with that measured by the high-precision Q3 D magnetic spectrograph using the nonISOL beam at nearly the same *** work provides useful background for making BRIF a powerful tool for the investigation of the reaction dynamics of exotic nuclei.

关键词： BRIF Exotic nuclei Elastic scattering Angular distribution

Measurement of the ^(232)Th(n,f)cross section in the 1-200 MeV range at the CSNS Back-n

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Nuclear Science and Techniques 2023年第8期34卷 142-153页

作者： Zhi-Zhou Ren Yi-Wei Yang Yong-Hao Chen Rong liu Bang-Jiao Ye Jie wen Hai-Rui Guo Zi-Jie Han Qi-Ping Chen Zhong-Wei wen Wei-Li Sun Han Yi xing-Yan liu Tao Ye Jiang-Bo Bai Qi An Jie Bao Yu Bao Ping Cao Hao-Lei Chen Zhen Chen Zeng-Qi cui Rui-Rui Fan Chang-Qing feng Ke-Qing Gao xiao-Long Gao Min-Hao Gu Chang-Cai Han Guo-Zhu He Yong-cheng He Yang Hong Yi-Wei Hu Han-xiong Huang xi-Ru Huang Hao-Yu Jiang Wei Jiang Zhi-Jie Jiang Han-Tao Jing Ling Kang Bo Li Chao Li Jia-wen Li Qiang Li xiao Li Yang Li Jie liu Shu-Bin liu Ze Long Guang-Yuan Luan Chang-Jun Ning Meng-Chen Niu Bin-Bin Qi Jie Ren xi-Chao Ruan Zhao-Hui Song Kang Sun Zhi-Jia Sun Zhi-xin Tan Jing-Yu Tang xin-Yi Tang Bin-Bin Tian Li-Jiao Wang Peng-cheng Wang Zhao-Hui Wang xiao-Guang Wu Xuan Wu Li-Kun xie xiao-yun Yang Li Yu Tao Yu Yong-Ji Yu Guo-Hui Zhang Lin-Hao Zhang Qi-Wei Zhang xian-Peng Zhang Yu-Liang Zhang Zhi-Yong Zhang Lu-Ping Zhou Zhi-Hao Zhou Ke-Jun Zhu Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China Institute of Applied Physics and Computational Mathematics Beijing 100088China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230027China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China Department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China

The ^(232)Th(n,f)cross section is very important in basic nuclear physics and applications based on the Th/U fuel *** the time-of-flight method and a multi-cell fast-fission ionization chamber,a novel measurement of the^(232)Th(n,f)cross sec-tion relative to^(235)U in the 1–200 MeV range was performed at the China Spallation Neutron Source Back-n white neutron source(Back-n).The fission event-neutron energy spectra of^(232)Th and^(235)U fission cells were measured in the single-bunch *** 232Th/235U fission cross-sectional ratios were obtained,and the measurement uncertainties were 2.5–3.7%for energies in the 2–20 MeV range and 3.6–6.2%for energies in the 20–200 MeV ***^(232)Th(n,f)cross section was obtained by introducing the standard cross section of^(235)U(n,f).The results were compared with those of previous theoreti-cal calculations,measurements,and *** measured 232Th fission cross section agreed with the main evaluation results in terms of the experimental uncertainty,and 232Th fission resonances were observed in the 1–3 MeV *** present results provide^(232)Th(n,f)cross-sectional data for the evaluation and design of Th/U cycle nuclear systems.

关键词： 232Th(n f)cross section Fast-fission ionization chamber Back-n white neutron source

Back-n white neutron source at CSNS and its applications

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Nuclear Science and Techniques 2021年第1期32卷 95-104页

作者： Jing-Yu Tang Qi An Jiang-Bo Bai Jie Bao Yu Bao Ping Cao Hao-Lei Chen Qi-Ping Chen Yong-Hao Chen Zhen Chen Zeng-Qi cui Rui-Rui Fan Chang-Qing feng Ke-Qing Gao xiao-Long Gao Min-Hao Gu Chang-Cai Han Zi-Jie Han Guo-Zhu He Yong-cheng He Yang Hong Yi-Wei Hu Han-xiong Huang xi-Ru Huang Hao-Yu Jiang Wei Jiang Zhi-Jie Jiang Han-Tao Jing Ling Kang Bo Li Chao Li Jia-wen Li Qiang Li xiao Li Yang Li Jie liu Rong liu Shu-Bin liu xing-Yan liu Ze Long Guang-Yuan Luan Chang-Jun Ning Meng-Chen Niu Bin-Bin Qi Jie Ren Zhi-Zhou Ren xi-Chao Ruan Zhao-Hui Song Kang Sun Zhi-Jia Sun Zhi-xin Tan xin-Yi Tang Bin-Bin Tian Li-Jiao Wang Peng-cheng Wang Zhao-Hui Wang Zhong-Wei wen xiao-Guang Wu Xuan Wu Li-Kun xie xiao-yun Yang Yi-Wei Yang Han Yi Li Yu Tao Yu Yong-Ji Yu Guo-Hui Zhang Lin-Hao Zhang Qi-Wei Zhang xian-Peng Zhang Yu-Liang Zhang Zhi-Yong Zhang Lu-Ping Zhou Zhi-Hao Zhou Ke-Jun Zhu 无 State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China Department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China The CSNS Back-n Collaboration

Back-streaming neutrons from the spallation target of the China Spallation Neutron Source(CSNS)that emit through the incoming proton channel were exploited to build a white neutron beam facility(the so-called Back-n white neutron source),which was completed in March *** Back-n neutron beam is very intense,at approximately 29107 n/cm2/s at 55 m from the target,and has a nominal proton beam with a power of 100 kW in the CSNS-I phase and a kinetic energy of 1.6 GeV and a thick tungsten target in multiple slices with modest moderation from the cooling water through the *** addition,the excellent energy spectrum spanning from 0.5 eV to 200 MeV,and a good time resolution related tothe time-of-flight measurements make it a typical white neutron source for nuclear data measurements;its overall performance is among that of the best white neutron sources in the *** with advanced spectrometers,detectors,and application utilities,the Back-n facility can serve wide applications,with a focus on neutron-induced cross-sectional *** article presents an overview of the neutron beam characteristics,the experimental setups,and the ongoing applications at Backn.

关键词： White neutron source Nuclear data measurements Experimental setups Neutron applications

嫦娥三号粒子激发X射线谱仪能谱温度影响的修正方法

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光谱学与光谱分析 2012年第7期32卷 1965-1968页

作者：吴明烨王焕玉彭文溪张承模张家宇崔兴柱梁晓华汪锦州杨家卫樊瑞睿刘雅清董亦凡吴峰赵小芸中国科学院高能物理研究所北京100049

粒子激发X射线谱仪(APXS)是中国探月工程二期嫦娥三号月球巡视器的有效载荷之一。简要介绍APXS的工作原理、组成部分,以及它在月面的工作环境,通过模拟及实验研究了月面热环境对APXS的影响,结果显示,APXS将工作在显著的变温过程中。相... 详细信息

粒子激发X射线谱仪(APXS)是中国探月工程二期嫦娥三号月球巡视器的有效载荷之一。简要介绍APXS的工作原理、组成部分,以及它在月面的工作环境,通过模拟及实验研究了月面热环境对APXS的影响,结果显示,APXS将工作在显著的变温过程中。相对恒温过程,APXS在变温过程中的能量分辨率明显变差。为了消除该温度效应的影响,提出了一种基于皮尔逊卡方检验(Pearson’s chi-squared test)的修正方法,能够有效提高变温过程中的能量分辨率。通过温度循环试验中变温阶段的数据对该方法进行了测试,结果表明,该方法具有很好的修正效果和较高的可靠性。

关键词：粒子激发X射线谱仪温度影响,修正皮尔逊卡方检验

Chinese Expert Consensus on the Diagnosis and Treatment of Adult Dermatomyositis (2022)

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International Journal of Dermatology and Venereology 2024年第3期7卷 163-173页

作者： Hua Cao Ai-Jun Chen Yong cui Dan-Qi Deng xing-Hua Gao Yan-Ling He xiao-Jing Kang Hong-Zhong Jin cheng-xin Li feng Li Heng-Jin Li wen-Jun Liao xiao-Ming liu Qian-Jin Lu Yan Lu Meng Pan Wei-Hua Pan xiao-Ming Shu Qing Sun Ke-yun Tang Juan Tao Yu Wang Ting xiao Fu-Ren Zhang Han-Lin Zhang Dermatology Branch of the China International Exchange and Promotion Association for Medical and Health Care National Clinical Research Center for Dermatologic and Immunologic Diseases Department of Dermatology Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200025China Department of Dermatology First Affiliated Hospital of Chongqing Medical UniversityChongqing 400042China Department of Dermatology China-Japan Friendship HospitalBeijing 100029China Department of Dermatology the Second Affiliated Hospital of Kunming Medical UniversityKunmingYunnan 650101China Department of Dermatology the First Hospital of China Medical UniversityShenyangLiaoning 110001China Department of Dermatology Beijing Chaoyang Hospital Affiliated to Capital Medical UniversityBeijing 100020China Department of Dermatology and Venereology People’s Hospital of Xinjiang Uygur Autonomous RegionUrumqiXinjiang Uygur Autonomous Region 830001China Department of Dermatology State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100730China Department of Dermatology First Medical CenterPLA General HospitalBeijing 100853China Department of Dermatology Hainan Hospital of PLA General HospitalSanyaHainan 572013China Department of Dermatology Xijing HospitalAir Force Medical UniversityXi’anShaanxi 710032China Department of Dermatology Huazhong University of Science and Technology Union Shenzhen HospitalShenzhenGuangdong 518052China Hospital for Skin Diseases(Institute of Dermatology) Chinese Academy of Medical Sciences and Peking Union Medical CollegeNanjingJiangsu 210042China Department of Dermatology Jiangsu Province Hospitalthe First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu 210029China Department of Dermatology Shanghai Changzheng HospitalSecond Affiliated Hospital of Naval Medical UniversityShanghai 200003China Department of Rheumatology China-Japan Friendship HospitalBeijing 100029China Department of Dermatology Qilu Hospital of Shandong UniversityJinanShandong 250012China Department of Dermatology Union Hospital

Dermatomyositis,an idiopathic inflammatory myopathy,is characterized by distinctive skin manifestations,proximal muscle weakness,and multiple organ involvement and can be accompanied by *** provide a reference for dermatologists and clinicians in other relevant fields of clinical practice,experts from the Dermatology Branch of the China International Exchange and Promotion Association for Medical and Health Care and the National Clinical Research Center for Dermatologic and Immunologic Diseases developed this consensus on the diagnosis and treatment of adult dermatomyositis using Chinese and international literature and expert advice.

关键词： dermatomyositis adult diagnosis treatment clinical protocols expert consensus

重症监护病房中心静脉导管相关血流感染控制与干预的多中心研究

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中华医院感染学杂志 2017年第13期27卷 2889-2892页

作者：吴镝崔霞马文杰刘运喜邢玉斌曹晋桂李海峰罗爱武张群柴明珍张波陈炜史皆然翟红岩冉素平祝丙华高延新王志刚王芳杨慧宁梅卫玲程文琴空军总医院感染控制科北京100142 解放军总医院感染管理与疾病控制科北京100853 解放军总医院海南分院感染管理与疾病控制科海南三亚572013 解放军第202医院感染控制科辽宁沈阳110003 广州总医院疾病预防控制科广东广州510010 第二军医大学长征医院感染控制科上海200003 第二军医大学东方肝胆外科医院感染控制科上海201805 第三军医大学西南医院感染控制科重庆400038 第三军医大学新桥医院院感科重庆400042 第四军医大学西京医院疾病预防控制科陕西西安710132 解放军第307医院感染控制科北京100071 解放军第306医院感染控制科北京100101 解放军第305医院感染控制科北京100017 乌鲁木齐总医院感染控制科新疆乌鲁木齐830000 陆军总医院感染控制科北京100700 解放军第309医院感染控制科北京100193 中国人民武装警察部队总医院感染控制科北京100039 解放军第113医院感染控制科浙江宁波315040 火箭军总医院疾病预防控制科北京100088

目的通过对多中心重症监护病房(ICU)中心静脉导管相关血流感染(CLABSI)情况的调查,采取相应的控制与干预方法,以降低其感染率。方法 2015年4月-2015年9月对全军19家医院的22个ICU的患者进行基线调查作为干预前的资料;2015年9月对相关人... 详细信息

目的通过对多中心重症监护病房(ICU)中心静脉导管相关血流感染(CLABSI)情况的调查,采取相应的控制与干预方法,以降低其感染率。方法 2015年4月-2015年9月对全军19家医院的22个ICU的患者进行基线调查作为干预前的资料;2015年9月对相关人员进行干预措施培训;2015年10月-2016年5月进行插管干预和维护干预方法作为干预后资料,对干预前后资料进行比较。结果干预前后中央静脉导管使用率,置管部位构成比,手卫生的依从性和正确率,皮肤消毒剂构成,每日评估并记录,使用无菌大铺巾、置管者着装合格、端口消毒合格率的比较,差异有统计学意义(P<0.05);干预前后CLABSI千日发病率比较,差异无统计学意义。结论插管干预组合和维护干预组合两者结合,提高中心静脉置管使用过程中的安全性,对降低CLABSI的发生还有待更进一步研究。

关键词：中心静脉导管导管相关血流感染干预措施

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湘雅医院15年间医院感染现患率调查

中国感染控制杂志 2016年第6期15卷 367-373页

作者：曾翠任南黄勋冯丽龚瑞娥文细毛刘珍如吴红曼李春辉吕一欣王曼平易霞云付陈超熊辛睿周鹏程陈玉华张莹徐秀华吴安华中南大学湘雅医院湖南长沙410008

目的：了解湘雅医院感染的实际情况及变化趋势，为有效预防与控制医院感染提供依据。方法采用床旁调查与病历调查相结合的横断面调查方法，调查该院2000—2014年（2006年未进行）某一日所有住院患者的医院感染现患率、横断面抗菌药物使... 详细信息

目的：了解湘雅医院感染的实际情况及变化趋势，为有效预防与控制医院感染提供依据。方法采用床旁调查与病历调查相结合的横断面调查方法，调查该院2000—2014年（2006年未进行）某一日所有住院患者的医院感染现患率、横断面抗菌药物使用率及细菌培养送检率。结果2000—2014年医院感染现患率从6．30％降低至3．91％，差异有统计学意义（χ2＝35．14，P ＜0．001）；社区感染现患率为15．61％～15．76％，各年度比较，差异无统计学意义。医院感染现患率最高的科室为综合重症监护病房（ICU）；医院感染与社区感染均以下呼吸道感染居首位；泌尿道置管率呈下降趋势，动静脉置管率呈上升趋势，差异均有统计学意义（χ2值分别为5．21、96．24，均P ＜0．001）。2008—2014年治疗性使用抗菌药物患者病原体送检率为36．37％～44．51％，医院感染病例病原体送检率为34．00％～44．99％，医院感染病原体检出率为41．57％～68．48％，均呈增长趋势，差异均有统计学意义（χ2值分别为22．78、10．03、26．49，均 P ＜0．001）。感染病原体以革兰阴性（G－）菌为主；抗菌药物横断面使用率与联合用药率均呈下降趋势，差异均有统计学意义（P ＜0．05）。结论该院医院感染防控与抗菌药物管理取得初步成效，医院感染现患率与抗菌药物横断面使用率均明显下降，感染病原体以 G－菌为主，感染部位以下呼吸道居首位。

关键词：医院感染现患率病原菌感染部位抗菌药物

CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen xiang Chen xiaoyu Chen xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen cheng Huajie cheng Shan cheng Tongguang cheng yunlong Chi Pietro Chimenti wen Han Chiu Guk Cho Ming-Chung Chu xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua cui xiaohao cui Zhaoyuan cui Brunella D'Anzi Ling-yun Dai xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH University of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui University HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu University Institute of ScienceVaranasi Bandirma Onyedi Eylul University Bandirma Beihang University Beijing Beijing Computational Science Research Center Beijing Beijing Conveyi LTD Beijing Beijing Glass Research Institute Co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal University Beijing Brown University ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad University Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo University Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central China Normal University WuhanHubei Central South University ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China Center of Advanced Science and Technology Beijing China Institute of Atomic Energy Beijing China Jiliang University HangzhouZhejiang China Nuclear Instrument CO. LTDBeijing China University of Geosciences Beijing China University of Geosciences WuhanHubei China University of Mining and Technology XuzhouJiangsu China West Normal University NanchongSichuan Chongqing University Department of PhysicsChongqing Chulalongkorn University Bangkok City University of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell University IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu University DalianLiaoning Dalian University of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East China University Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise