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The LRXs-RALFs-FER module controls plant growth and salt stress responses by modulating multiple plant hormones

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National Science Review 2021年第1期8卷 40-55页

作者： Chunzhao zhao wei Jiang Omar Zayed Xin Liu kai Tang Wenfeng nie Yali Li Shaojun Xie Yuan Li Tiandan Long Linlin Liu Yingfang Zhu yang zhao Jian-Kang Zhu Shanghai Center for Plant Stress Biology and Center of Excellence in Molecular Plant Sciences Chinese Academy of Sciences Department of Horticulture and Landscape Architecture Purdue University Key laboratory of Plant Stress Biology School of Life SciencesHenan University National Center for Soybean Improvement Key Laboratory of Biology and Genetics and Breeding for Soybean Ministry of Agriculture State Key Laboratory of Crop Genetics and Germplasm Enhancement Nanjing Agricultural University Genetics Department Faculty of AgricultureMenofia University University of the Chinese Academy of Sciences State Key Laboratory of Plant Physiology and Biochemistry College of Biological SciencesChina Agricultural University State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China Sichuan Agricultural University

Salt stress is a major environmental factor limiting plant growth and productivity. We recently discovered an important new salt tolerance pathway, where the cell wall leucine-rich repeat extensins LRX3/4/5, the RAPID ALKALINIZATION FACTOR (RALF) peptides RALF22/23 and receptor-like kinase FERONIA(FER) function as a module to simultaneously regulate plant growth and salt stress tolerance. However, the intracellular signaling pathways that are regulated by the extracellular LRX3/4/5-RALF22/23-FER module to coordinate growth, cell wall integrity and salt stress responses are still unknown. Here, we report that the LRX3/4/5-RALF22/23-FER module negatively regulates the levels of jasmonic acid (JA), salicylic acid(SA) and abscisic acid (ABA). Blocking JA pathway rescues the dwarf phenotype of the lrx345 and fer-4mutants, while disruption of ABA biosynthesis suppresses the salt-hypersensitivity of these mutants. Many salt stress-responsive genes display abnormal expression patterns in the lrx345 and fer-4 mutants, as well as in the wild type plants treated with epigallocatechin gallate (EGCG), an inhibitor of pectin methylesterases,suggesting cell wall integrity as a critical factor that determines the expression pattern of stress-responsive genes. Production of reactive oxygen species (ROS) is constitutively increased in the lrx345 and fer-4mutants, and inhibition of ROS accumulation suppresses the salt-hypersensitivity of these ***, our work provides strong evidence that the LRX3/4/5-RALF22/23-FER module controls plant growth and salt stress responses by regulating hormonal homeostasis and ROS accumulation.

关键词： salt stress cell wall integrity growth LRX RALF FER hormone

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

Medical Additive Manufacturing: From a Frontier Technology to the Research and Development of Products

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Engineering 2020年第11期6卷 1217-1221页

作者： Guixing Qiu Wenjiang Ding wei Tian Ling Qin Yu zhao Lianmeng Zhang Jian Lu Daijie Chen Guangyi Yuan Chengtie Wu Bingheng Lu Ruxu Du Jimin Chen Mo Elbestawi Zhongwei Gu Dichen Li wei Sun Yuanjin zhao Jie He Dadi Jin Bin Liu kai Zhang Jianmo Li Kam WLeong Dewei zhao Dingjun Hao Yingfang Ao Xuliang Deng Huilin yang ShaoKeh Hsu Yingqi Chen Long Li Jianping Fan Guohui nie Yun Chen Hui Zeng wei Chen Yuxiao Lai Department of Orthopedics Peking Union Medical College HospitalChinese Academy of Medical Science 8 Peking Union Medical CollegeBejjing 100730.China National Engineering Research Center of Light Alloys Net Forming&State Key Laboratony of Metal Matrix Composite Shanghai Jiao Tong UniversityShanghai 200240China Notional Engineering Research Center of Mg Materials and Applicarions and School of Materials Science 8r Engineering.Shanghai Jlao Tong University Shanghai 200240China Department of Spine Surgery Beijing Jishuitan HospitalBeijing 100035China Center for Troanslational Medicine Research and Development Institute of Biomedical and Health EngineeringShenzhen Insitute of Advanced Technology.Chinese Academy of SciencesShenzhen 518055China Guangdong Engineering Laboratony of Biomaterials Additive Manufacturing Guangdong 518055China Musculoskeletal Research Laboratory of the Department of Orthopedics 8 Traumatology and Innovative Orthopedic Biomaterial and Drug Translational Research Laboratory Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong 999077.China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Center for Advanced Structural Materials City University of Hong Kong Shenzhen Research InstiuteShenzhen 518057.China Hong Kong Branch of National Precious Metals Material Engineering Research Center Department of Material Science and EngineeringCity Untiversity of Hong KongHong Kong 999077.China Department of Mechanical Engineering ity Untiversity of Hong Kong.Hong Kong 9977 China School of Pharmacy.Shanghai Jiao Tong University Shanghai 200240China China State Instute of Pharmaceutical Industry Shanghai Institute of Pharmaceutical IndustryShonghai 201203China Shanghai Innovation Instinute for Materials Shanghai 200444.China State Key Laboratory of High-Performance Ceramies and Superfine Microstructure Shanghai Institute of CeramicsChinese Acadermy 0f SciencesShanghai 200050Ch

*** and development(R&D)and the challenges of raw materials for medical additive manufacturing Raw materials for medical additive manufacturing have a wide range of commonalities that are also seen in many other fields,making them an important basis in the field of three-dimensional(3D)*** and challenges related to material types,powder properties,formability,viscoelasticity,and so forth also share common *** example,many metal materials are used in the field of aviation,while metals,polymers,and inorganic materials are used in the field of *** most widely used materials in biomedicine are *** homogeneous and non-homogeneous composites are also available for 3D printing,and impose an additional challenge in additive manufacturing;the use of heterogeneous composites in 3D printing is particularly challenging.

关键词： composites printing additive

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基于任务的乘员脑力负荷典型主观评价方法

科学技术与工程 2018年第14期18卷 131-135页

作者：刘维平赵凯旋聂俊峰傅斌贺杨波陆军装甲兵学院机械工程系北京100072

为研究三种脑力负荷主观评价量表即Cooper-Harper量表、SWAT量表以及NASA-TLX量表能否对装甲车辆乘员信息作业脑力负荷进行测量,通过实验任务,以任务完成时间和量表得分为指标,对三种量表的敏感性以及聚合效度进行对比研究。研究结果表... 详细信息

为研究三种脑力负荷主观评价量表即Cooper-Harper量表、SWAT量表以及NASA-TLX量表能否对装甲车辆乘员信息作业脑力负荷进行测量,通过实验任务,以任务完成时间和量表得分为指标,对三种量表的敏感性以及聚合效度进行对比研究。研究结果表明:SWAT量表的敏感性要略高于CH量表以及NASA-TLX量表,SWAT量表与NASA-TLX量表的聚合效度较高,CH量表与SWAT量表以及NASA-TLX量表的聚合效度比较低,CH量表与后两种量表测定结果一致性较差;通过SWAT量表与NASA-TLX量表进行模糊综合评判比较得出NASA-TLX量表要优于SWAT量表。综上所述,NASA-TLX量表是三种量表中测量乘员脑力负荷较为理想的工具。

关键词：装甲车辆脑力负荷主观评价量表敏感性效度

户外变电站(换流站)用典型降噪材料火灾特性及改进现状

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消防科学与技术 2020年第10期39卷 1469-1473页

作者：聂京凯张嵩阳吕中宾赵发平肖伟民张洋王磊磊全球能源互联网研究院有限公司防护材料研究室北京102211 国网河南电力科学研究院河南郑州450052 国网河南洛阳供电公司河南洛阳471003 北京市劳动保护科学研究所北京100055

户外变电站(换流站)的降噪措施以隔声罩、隔声屏障为主,其主要构成材料为“碳钢、玻璃棉和岩棉”。电力火灾主要以绝缘油和高聚物燃烧为主,升温速度及最高温度均高于纤维类火灾,对材料影响更为严酷。电力火灾下,矿物棉类材料会发生热缩... 详细信息

户外变电站(换流站)的降噪措施以隔声罩、隔声屏障为主,其主要构成材料为“碳钢、玻璃棉和岩棉”。电力火灾主要以绝缘油和高聚物燃烧为主,升温速度及最高温度均高于纤维类火灾,对材料影响更为严酷。电力火灾下,矿物棉类材料会发生热缩、粉化,对于消防基本无影响,但钢结构及镀锌钢板即使在1000℃时仍有强度,虽然软化变形,但不会直接断裂,仍阻碍灭火工作。“高温熔落式颗粒板”“基于热塑性PA6材料的高温可熔落结构”两种隔声罩改进方式改善了消防条件,其最终服役性能还需在应用中进一步积累试验数据。变电设备的本体低噪声化将是电工装备技术发展的最终趋势。

关键词：降噪材料 BOX-In 隔声罩电力火灾高温失效材料服役性能

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Biomarkers of aging

Science China(Life Sciences) 2023年第5期66卷 893-1066页

作者： Aging Biomarker Consortium Hainan Bao Jiani Cao Mengting Chen Min Chen wei Chen Xiao Chen Yanhao Chen Yu Chen Yutian Chen Zhiyang Chen Jagadish K Chhetri Yingjie Ding Junlin Feng Jun Guo Mengmeng Guo Chuting He Yujuan Jia Haiping Jiang Ying Jing Dingfeng Li Jiaming Li Jingyi Li Qinhao Liang Rui Liang Feng Liu Xiaoqian Liu Zuojun Liu Oscar Junhong Luo Jianwei Lv Jingyi Ma Kehang Mao Jiawei nie Xinhua Qiao Xinpei Sun Xiaoqiang Tang Jianfang Wang Qiaoran Wang Siyuan Wang Xuan Wang Yaning Wang Yuhan Wang Rimo Wu kai Xia Fu-Hui Xiao Lingyan Xu Yingying Xu Haoteng Yan Liang yang Ruici yang Yuanxin yang Yilin Ying Le Zhang weiwei Zhang Wenwan Zhang Xing Zhang Zhuo Zhang Min Zhou Rui Zhou Qingchen Zhu Zhengmao Zhu Feng Cao Zhongwei Cao Piu Chan Chang Chen Guobing Chen Hou-Zao Chen Jun Chen weimin Ci Bi-Sen Ding Qiurong Ding Feng Gao Jing-Dong JHan kai Huang Zhenyu Ju Qing-Peng Kong Ji Li Jian Li Xin Li Baohua Liu Feng Liu Lin Liu Qiang Liu Qiang Liu Xingguo Liu Yong Liu Xianghang Luo Shuai Ma Xinran Ma Zhiyong Mao Jing nie Yaojin Peng Jing Qu Jie Ren Ruibao Ren Moshi Song Zhou Songyang Yi Eve Sun Yu Sun Mei Tian Shusen Wang Si Wang Xia Wang Xiaoning Wang Yan-Jiang Wang Yunfang Wang Catherine CL Wong Andy Peng Xiang Yichuan Xiao Zhengwei Xie Daichao Xu Jing Ye Rui Yue Cuntai Zhang Hongbo Zhang Liang Zhang weiqi Zhang Yong Zhang Yun-Wu Zhang Zhuohua Zhang Tongbiao zhao Yuzheng zhao Dahai Zhu weiguo Zou Gang Pei Guang-Hui Liu Aging Biomarker Consortium(ABC) Beijing 100101China CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of Sciences and China National Center for BioinformationBeijing 100101China State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Department of Dermatology Xiangya HospitalCentral South UniversityChangsha 410008China Hunan Key Laboratory of Aging Biology Xiangya HospitalCentral South UniversityChangsha 410008China National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangsha 410008China Clinic Center of Human Gene Research Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Hubei Clinical Research Center of Metabolic and Cardiovascular Disease Huazhong University of Science and TechnologyWuhan 430022China Hubei Key Laboratory of Metabolic Abnormalities and Vascular Aging Huazhong University of Science and TechnologyWuhan 430022China Stem Cell Translational Research Center Tongji HospitalTongji University School of MedicineShanghai 200065China Department of Nuclear Medicine Daping HospitalThird Military Medical UniversityChongqing 400042China CAS Key Laboratory of Nutrition Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200031China Shanghai Key Laboratory of Maternal Fetal Medicine Clinical and Translational Research Center of Shanghai First Maternity and Infant HospitalFrontier Science Center for Stem Cell ResearchShanghai Key Laboratory of Signaling and Disease ResearchSchool of Life Sciences and TechnologyTongji UniversityShanghai 200092China The Department of Endovascular Surgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052China Key Laboratory of Regenerative Medicine of Ministry of Education Institute of Ageing and Regenerative MedicineJ

Aging biomarkers are a combination of biological parameters to(i)assess age-related changes,(ii)track the physiological aging process,and(iii)predict the transition into a pathological *** a broad spectrum of aging biomarkers has been developed,their potential uses and limitations remain poorly *** immediate goal of biomarkers is to help us answer the following three fundamental questions in aging research:How old are we?Why do we get old?And how can we age slower?This review aims to address this ***,we summarize our current knowledge of biomarkers developed for cellular,organ,and organismal levels of aging,comprising six pillars:physiological characteristics,medical imaging,histological features,cellular alterations,molecular changes,and secretory *** fulfill all these requisites,we propose that aging biomarkers should qualify for being specific,systemic,and clinically relevant.

关键词： aging senescence biomarker clock

冠脉内注射比伐芦定对急性ST段抬高型心肌梗死直接PCI术中冠脉血流及临床事件影响

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临床军医杂志 2016年第11期44卷 1107-1110,1115页

作者：梁振洋赵雪东刘海伟徐凯刘美丽赵昕聂绍平韩雅玲沈阳军区总医院心血管内科全军心血管病研究所辽宁沈阳110016 首都医科大学附属安贞医院急诊危重症中心北京100001

目的探讨在直接经皮冠状动脉介入(PPCI)术中,冠脉内注射比伐芦定对急性ST段抬高型心肌梗死(STEMI)患者罪犯冠脉血流恢复情况,以及术后30 d内临床事件的影响。方法本研究为前瞻性、随机对照探索性临床研究,选择2015年7月至2015年12月收... 详细信息

目的探讨在直接经皮冠状动脉介入(PPCI)术中,冠脉内注射比伐芦定对急性ST段抬高型心肌梗死(STEMI)患者罪犯冠脉血流恢复情况,以及术后30 d内临床事件的影响。方法本研究为前瞻性、随机对照探索性临床研究,选择2015年7月至2015年12月收治的拟行PPCI的急性STEMI患者84例,将患者随机分为对照组(n=40)和比伐芦定组(n=44)。经冠状动脉插入指引导丝或小直径球囊导管预扩张,使冠状动脉恢复前向血流≥TIMI 1级后,对照组不予冠脉内注射比伐芦定,正常进行PPCI常规操作;比伐芦定组经指引导管或微导管一次性冠脉内推注50%静脉负荷剂量的比伐芦定,此后按照PPCI常规正常操作。主要观察终点为PPCI术终靶血管校正的TIMI血流帧数(CTFC);次要观察终点为患者30 d内不良心脑血管事件(MACCE)发生率(包括死亡、再次心肌梗死、靶血管血运重建、脑卒中)、支架内血栓及出血学术研究会(BARC)定义的出血事件。结果两组患者靶血管PPCI术后,最终CTFC比较,差异无统计学意义(P>0.05);两组术后30 d内,MACCE事件发生率、支架内血栓及出血事件发生率比较,差异无统计学意义(P>0.05)。结论比伐芦定组与对照组比较,在改善冠脉血流方面无显著作用;冠脉内应用比伐芦定对术后30 d的临床缺血及出血事件均无明显影响。

关键词：比伐芦定急性ST段抬高型心肌梗死直接经皮冠状动脉介入

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甜樱桃花芽冻害发生时间初步观察与分析

山西农业科学 2014年第8期42卷 910-912,924页

作者：聂国伟戴桂林杨晓华宋永宏李凯王芸芸赵武娟山西省农业科学院果树研究所山西太谷030800

通过连续16 a对甜樱桃花芽冻害的调查发现,甜樱桃花芽受冻害时间不是发生在冬季极端低温或3月份上中旬低温发生时,主要发生在4月低温时,当温度低到一定程度时会造成毁灭性的冻害。

关键词：甜樱桃花芽冻害时间

中国散裂中子源反角白光中子束流参数的初步测量

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物理学报 2019年第8期68卷 38-49页

作者：鲍杰陈永浩张显鹏栾广源任杰王琦阮锡超张凯安琪白怀勇曹平陈琪萍程品晶崔增琪樊瑞睿封常青顾旻皓郭凤琴韩长材韩子杰贺国珠何泳成何越峰黄翰雄黄蔚玲黄锡汝季筱路吉旭阳江浩雨蒋伟敬罕涛康玲康明涛兰长林李波李论李强李晓李阳李样刘荣刘树彬刘星言马应林宁常军聂阳波齐斌斌宋朝晖孙虹孙晓阳孙志嘉谭志新唐洪庆唐靖宇王鹏程王涛峰王艳凤王朝辉王征文杰温中伟吴青彪吴晓光吴煊解立坤羊奕伟杨毅易晗于莉余滔于永积张国辉张旌张林浩张利英张清民张奇伟张玉亮张志永赵映潭周良周祖英朱丹阳朱科军朱鹏中国原子能科学研究院核数据重点实验室北京102413 中国科学院高能物理研究所北京100049 东莞中子科学中心东莞523803 西北核技术研究所西安710024 核探测与核电子学国家重点实验室北京100049 中国科学技术大学近代物理系合肥230026 核物理与核技术国家重点实验室北京大学物理学院北京100871 中国工程物理研究院核物理与化学研究所绵阳621900 南华大学衡阳421001 中国科学技术大学工程与应用物理系合肥230026 兰州大学核科学与技术学院兰州730000 北京航空航天大学北京100083 西安交通大学西安710049

中国散裂中子源(CSNS)已于2018年5月建设完工,随后进行了试运行.其中的反角白光中子束线(Back-n)可用于中子核数据测量、中子物理研究和核技术应用等多方面的实验.本文报道对该中子束的品质参数测量实验过程以及最终实验结果.实验主要... 详细信息

中国散裂中子源(CSNS)已于2018年5月建设完工,随后进行了试运行.其中的反角白光中子束线(Back-n)可用于中子核数据测量、中子物理研究和核技术应用等多方面的实验.本文报道对该中子束的品质参数测量实验过程以及最终实验结果.实验主要采用中子飞行时间法,利用^(235)U,^(238)U裂变室和~6Li-Si探测器测量了中子能谱和中子注量率,又利用闪烁体-互补金属氧化物半导体探测系统测量了中子束斑的剖面,得到了该束线的初步实验测量结果.其中白光中子的全能谱测量范围eV—100 MeV,给出了不确定度分析;给出了中子注量率两个实验厅位置的满功率值;给出了白光中子在直径60 mm情况下的全能区束斑.通过与模拟结果的比较探讨了以上结果的合理性,并提出了改进计划.这些实验结果为以后该束线的核数据测量和探测器标定实验奠定了基础.

关键词：中国散裂中子源反角白光中子中子飞行时间法中子束线特征参数