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Observation of the Crab Nebula with LhAASO-KM2A−a performance study

Chinese Physics C 2021年第2期45卷 518-530页

作者： F.Aharonian Q.An Axikegu L.X.Bai y.X.Bai y.w.Bao D.Bastieri X.j.Bi y.j.Bi h.Cai j.t.Cai Z.Cao j.Chang j.F.Chang X.C.Chang B.M.Chen j.Chen L.Chen M.j.Chen M.L.Chen Q.h.Chen S.h.Chen S.Z.Chen t.L.Chen X.L.Chen y.Chen N.Cheng y.D.Cheng S.w.Cui X.h.Cui y.D.Cui B.Z.Dai h.L.Dai Z.G.Dai D.della Volpe B.D'Ettorre Piazzoli X.j.Dong j.h.Fan y.Z.Fan Z.X.Fan j.Fang K.Fang C.F.Feng L.Feng S.h.Feng y.L.Feng B.gao C.D.gao Q.gao w.gao M.M.Ge L.S.Geng G.h.Gong Q.B.Gou M.h.Gu j.G.Guo X.L.Guo y.Q.Guo y.y.Guo y.A.han h.h.he h.N.he j.C.he S.L.he X.B.he y.he M.heller y.K.hor C.hou X.hou h.B.hu S.hu S.C.hu X.j.hu D.h.huang Q.L.huang w.h.huang X.t.huang Z.C.huang F.ji X.L.ji h.y.jia K.jiang Z.j.jiang C.jin D.Kuleshov K.Levochkin B.B.Li C.Li F.Li h.B.Li h.C.Li h.y.Li j.Li K.Li w.L.Li X.Li X.R.Li y.Li y.Z.Li Z.Li E.w.Liang y.F.Liang S.j.Lin B.liu C.liu D.liu h.liu h.D.liu j.liu j.L.liu j.S.liu j.y.liu M.y.liu R.y.liu S.M.liu w.liu y.N.liu Z.X.liu w.j.Long R.Lu h.K.Lv B.Q.Ma L.L.Ma X.h.Ma j.R.Mao A.Masood w.Mitthumsiri t.Montaruli y.C.Nan B.y.Pang P.Pattarakijwanich Z.y.Pei M.y.Qi D.Ruffolo V.Rulev A.Sáiz L.Shao O.Shchegolev X.D.Sheng j.R.Shi h.C.Song yu.V.Stenkin V.Stepanov Q.N.Sun X.N.Sun Z.B.Sun P.h.t.tam Z.B.tang w.w.tian B.D.wang C.wang h.wang h.G.wang j.C.wang j.S.wang L.P.wang L.y.wang R.N.wang w.wang X.G.wang X.j.wang X.y.wang y.D.wang y.j.wang y.P.wang Z.wang Z.h.wang Z.X.wang D.M.wei j.j.wei y.j.wei t.wen C.y.wu h.R.wu S.wu w.X.wu X.F.wu S.Q.Xi j.Xia j.j.Xia G.M.Xiang G.Xiao h.B.Xiao G.G.Xin y.L.Xin y.Xing D.L.Xu R.X.Xu L.Xue D.h.yan C.w.yang F.F.yang j.y.yang L.L.yang M.j.yang R.Z.yang S.B.yang y.h.yao Z.G.yao y.M.ye L.Q.yin N.yin X.h.you Z.y.you y.h.yu Q.yuan h.D.zeng t.X.zeng w.zeng Z.K.zeng M.Zha X.X.Zhai B.B.Zhang h.M.Zhang h.y.Zhang j.L.Zhang j.w.Zhang L.Zhang L.X.Zhang P.F.Zhang P.P.Zhang R.Zhang S.R.Zhang S.S.Zhang X.Zhang X.P.Zhang y.Zhang y.F.Zhang y.L.Zhang B.Zhao j.Zhao L.Zhao L.Z.Zhao S.P.Zhao F.Zheng y.Zheng B.Zhou h.Zhou j.N.Zhou P.Zhou R.Zhou X.X.Zhou C.G.Zhu F.R.Zhu h.Zhu K.j.Zhu X.Zuo Key Laboratory of Particle Astrophyics&Experimental Physics Division&Computing Center Institute of High Energy PhysicsChinese Academy of Sciences100049 BeijingChina University of Chinese Academy of Sciences 100049 BeijingChina tIANFU Cosmic Ray Research Center ChengduSichuanChina State Key Laboratory of Particle Detection and Electronics China University of Science and technology of China 230026 HefeiAnhuiChina Department of Engineering Physics Tsinghua University100084 BeijingChina National Astronomical Observatories Chinese Academy of Sciences100101 BeijingChina National Space Science Center Chinese Academy of Sciences100190 BeijingChina School of Physics Peking University100871 BeijingChina Center for Astrophysics Guangzhou University510006 GuangzhouGuangdongChina School of Physics and Astronomy&School of Physics(Guangzhou) Sun Yat-sen University519000 ZhuhaiGuangdongChina School of Physical Science and technology Guangxi University530004 NanningGuangxiChina hebei Normal University 050024 ShijiazhuangHebeiChina School of Physics and Microelectronics Zhengzhou University450001 ZhengzhouHenanChina School of Astronomy and Space Science Nanjing University210023 NanjingJiangsuChina Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of Sciences210023 NanjingJiangsuChina Institute of Frontier and Interdisciplinary Science Shandong University266237 QingdaoShandongChina Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of Sciences200030 ShanghaiChina tsung-Dao Lee Institute&School of Physics and Astronomy Shanghai Jiao Tong University200240 ShanghaiChina School of Physical Science and technology&School of Information Science and technology Southwest Jiaotong University610031 ChengduSichuanChina College of Physics Sichuan University610065 ChengduSichuanChina Key Laboratory of Cosmic Rays(tibet University) Ministry of Education850000 LhasaTibetChina School of Physics and tec

A sub-array of the Large high Altitude Air Shower Observatory(LhAASO),KM2A is mainly designed to observe a large fraction of the northern sky to hunt for γ-ray sources at energies above 10 *** though the detector construction is still underway,half of the KM2A array has been operating stably since the end of *** this paper,we present the KM2A data analysis pipeline and the first observation of the Crab Nebula,a standard candle in very high energy γ-ray *** detect γ-ray signals from the Crab Nebula in both energy ranges of 10-100 teV and>100 teV with high significance,by analyzing the KM2A data of 136 live days between December 2019 and May *** the observations,we test the detector performance,including angular resolution,pointing accuracy and cosmic-ray background rejection *** energy spectrum of the Crab Nebula in the energy range 10-250 teV fits well with a single power-law function dN/dE=(1.13±0.05stat±0.08sys)×10^(-14).(E/20 teV)-309±0.06stat±0.02syscm^(-2) s^(-1) teV^(-1).It is consistent with previous measurements by other *** opens a new window of γ-ray astronomy above 0.1 PeV through which new ultrahigh-energy γ-ray phenomena,such as cosmic PeVatrons,might be discovered.

关键词： γ-ray Crab Nebula extensive air showers cosmic rays

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小叶买麻藤茎化学成分及其黄嘌呤氧化酶抑制活性研究

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中成药 2024年第9期46卷 2994-2999页

作者：陈倩张正宽骆田田曾爱芬徐国波朱勤凤廖尚高贵州医科大学药学院/省部共建药用植物功效与利用国家重点实验室贵州贵阳550025 教育部民族药与中药开发应用工程研究中心/贵州省药物制剂重点实验室贵州贵阳550025

目的研究小叶买麻藤Gnetum parvifolium(warb.)*** ex Chun茎的化学成分及其黄嘌呤氧化酶抑制活性。方法小叶买麻藤茎95%乙醇提取物采用硅胶、MCI、制备hPLC进行分离纯化,根据理化性质及波谱数据鉴定所得化合物的结构。采用紫外分光光... 详细信息

目的研究小叶买麻藤Gnetum parvifolium(warb.)*** ex Chun茎的化学成分及其黄嘌呤氧化酶抑制活性。方法小叶买麻藤茎95%乙醇提取物采用硅胶、MCI、制备hPLC进行分离纯化,根据理化性质及波谱数据鉴定所得化合物的结构。采用紫外分光光度法测定黄嘌呤氧化酶的抑制活性。结果从中分离得到17个化合物,分别鉴定为异单叶大黄素(1)、白藜芦醇(2)、对羟基苯甲醛(3)、环桉树醇(4)、(E)-1-(3′,5′-dimethoxyphenyl)-2-(3,4-dimethoxyphenyl)ethene(5)、豆甾-4-烯-3-酮(6)、medioresinol(7)、白杨素(8)、金色酰胺醇酯(9)、(-)-松脂醇(10)、对羟基苯甲酸酯(11)、2-甲氧基对苯二酚(12)、gnetumontain C(13)、丁香脂素(14)、高圣草素(15)、香草醛(16)、β-谷甾醇(17)。化合物1~3、15~16的IC_(50)值分别为(11.4±0.54)、(14.1±1.06)、(320.4±0.75)、(360.6±0.78)、(386.3±0.71)μmol/L。结论化合物3~4为首次从该植物中分离得到,化合物5~13为首次从买麻藤属植物中分离得到。化合物1~3、15~16具有黄嘌呤氧化酶抑制活性。

关键词：小叶买麻藤茎化学成分分离鉴定黄嘌呤氧化酶

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产单核细胞李氏杆菌Lm4b_02325/26双基因缺失株构建及部分生物学特性试验

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畜牧兽医学报 2024年第6期55卷 2578-2587页

作者：任慧杰马勋王静刘彩霞曾东东寇丽君史唯地吕双飞钱瑞宣高盛杰石河子大学动物科技学院新疆石河子832003

旨在构建食源性产单核细胞李氏杆菌毒力岛4(LIPI-4)中的抗转录终止子(Lm4b_02325)和未知蛋白(Lm4b_02326)基因的双缺失株,研究Lm4b_02325/26基因对产单核细胞李氏杆菌(Listeria monocytogenes,LM)的部分生物学特性的影响。利用同源重组... 详细信息

旨在构建食源性产单核细胞李氏杆菌毒力岛4(LIPI-4)中的抗转录终止子(Lm4b_02325)和未知蛋白(Lm4b_02326)基因的双缺失株,研究Lm4b_02325/26基因对产单核细胞李氏杆菌(Listeria monocytogenes,LM)的部分生物学特性的影响。利用同源重组技术构建LM928ΔLm4b_02325/26双缺失株,测定LM928和LM928ΔLm4b_02325/26双缺失株在脑心浸出液肉汤(brain heart infusion broth, BhI)、不同EtOh浓度、不同NaCl浓度、不同ph、不同温度下的D_(600 nm),绘制生长曲线;Rt-qPCR检测双基因缺失前后体外BhI培养环境下部分毒力因子转录水平;平板计数测定其对鼠巨噬细胞RAw264.7的黏附、侵袭与胞内增殖情况;感染C57BL/6小鼠后检测肝、脾、脑组织中的细菌数量。结果表明,成功构建具有遗传稳定性的双缺失株LM928ΔLm4b_02325/26。在含0.5%~10%NaCl或3%~4.5%EtOh的培养基中,双缺失株与野毒株生长没有明显差异,在ph=5条件下,双缺失株的生长率显著高于野毒株,ph=9条件下双缺失株的生长率显著低于野毒株。在不同温度(4℃、37℃、42℃)BhI培养基中,双缺失株与野毒株生长没有明显差异。Lm4b_02325/26基因双缺失株在BhI培养基中毒力因子hly、inlC和PlcA极显著上调(PtA、inlP、PlcB、prfA、SigB、iap和inlA极显著下调(Pw264.7细胞的黏附率(14.86%)和侵袭率(2.23%)明显低于野毒株的黏附率(22.93%)和侵袭率(4.28%)(Ph时胞内增殖数量极显著低于野毒株(Pw264.7细胞的黏附、侵袭和胞内增殖有关。本研究为LIPI-4的功能研究奠定了基础。

关键词：产单核细胞李氏杆菌双缺失株黏附侵袭胞内增殖载菌量生长曲线

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阻断程序性死亡配体-1改善糖尿病脓毒症小鼠免疫状态并对肾脏起保护作用

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中国急救医学 2024年第8期44卷 683-689页

作者：杨黎高倩杨铁城郭树彬首都医科大学附属北京世纪坛医院急诊科急危重症医学中心北京100038 首都医科大学附属北京朝阳医院急诊医学临床研究中心心肺脑复苏北京市重点实验室北京100020

目的探讨阻断程序性死亡配体-1(PD-L1)对糖尿病脓毒症小鼠免疫状态的改变及肾功能保护的可能机制。方法C57BL/6j雄性小鼠随机分为四组:非糖尿病鼠假手术组(Sham组)、糖尿病鼠假手术组(DMS组)、糖尿病鼠脓毒症模型组(DMCLP组)和PD-L1抗... 详细信息

目的探讨阻断程序性死亡配体-1(PD-L1)对糖尿病脓毒症小鼠免疫状态的改变及肾功能保护的可能机制。方法C57BL/6j雄性小鼠随机分为四组:非糖尿病鼠假手术组(Sham组)、糖尿病鼠假手术组(DMS组)、糖尿病鼠脓毒症模型组(DMCLP组)和PD-L1抗体治疗组(anti-PD-L1组),每组6只。采用高糖高脂饮食喂养联合链脲佐菌素(streptozotocin,StZ)注射构建糖尿病小鼠模型,模型建立后继续饲养28 d,盲肠结扎穿孔术(cecal ligation and puncture,CLP)构建脓毒症小鼠模型,PD-L1抗体治疗组于小鼠CLP后1 h腹腔注射抗PD-L1抗体50μg/只。24 h后采用流式细胞术观察各组小鼠经典单核细胞亚型及其表面组织相容性复合体Ⅱ(MhCⅡ)表达,酶联免疫吸附实验(ELISA)检测血清炎症因子IL-6、tNF-α、IL-10表达,全自动生化检测仪检测血清尿素氮(BUN)和肌酐(SCr)水平,苏木素-伊红(hE)染色观察小鼠肾组织损伤情况。结果与Sham组和DMS组比较,DMCLP组小鼠经典单核细胞(Ly6C hi单核细胞)百分比明显增加,其表面MhCⅡ表达明显减少,外周血炎症因子IL-6、tNF-α、IL-10水平升高,BUN和SCr水平明显升高,差异有统计学意义(均Pti-PD-L1治疗组小鼠Ly6C hi单核细胞百分比减少,其表面MhCⅡ表达明显增加,外周血炎症因子IL-6、tNF-α、IL-10水平下降,BUN和SCr水平降低,差异有统计学意义(均P<0.05);肾脏病理损害减轻。结论PD-L1抗体通过改善经典单核细胞功能而改变糖尿病脓毒症小鼠免疫状态,进而对肾脏起保护作用。

关键词：糖尿病脓毒症单核细胞程序性死亡配体-1 盲肠结扎穿孔术血清肌酐

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Pollinator attraction in Cornus capitata (Cornaceae): the relative role of visual and olfactory cues

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journal of Plant Ecology 2015年第2期8卷 173-181页

作者： Bo Song yang Niu jürg Stöcklin gao Chen De-Li Peng yong-qian gao hang Sun Key Laboratory for Plant Diversity and Biogeography of East Asian Kunming Institute of BotanyChinese Academy of Sciences132 Lanhei RoadKunming 650201YunnanChina Section of Plant Ecology Institute of BotanyUniversity of BaselSchönbeinstrasse 6Basel 4056Switzerland Kunming Botanical Garden Kunming Institute of BotanyChinese Academy of Sciences132 Lanhei RoadKunming 650201YunnanChina Department of Ecology and Environmental Engineering Yunnan Forestry Technological College1 Chuanjin RoadKunming 650224YunnanChina

Aims it is generally accepted that visual displays and floral scent play important roles in communication between flowering plants and their ***,the relative role of visual and olfactory cues in pollinator attraction is largely *** this study,we determined the roles of both types of cue in attracting pollinators to Cornus capitata,a medium sized tree with each capitulum sur-rounded by four large,white,petaloid *** Pollinator observations and pollination experiments were con-ducted in a natural population;the inflorescences’visual and olfactory signals were characterized by spectral and chemical analyses;the responses of pollinators to visual and olfactory cues were tested using dual-choice behavioural bioassays;the relative roles of visual and olfactory cues in pollinator attrac-tion were tested by comparing the responses of pollinators to inflorescences subjected to three experimental treatments(intact,all bracts removed,and capitulum removed)within the natural *** Findings For fruit set,*** is entirely dependent on pollinators,with a bee,Anthophora sp.,being the main *** present high colour distance and green contrast against the *** volatile compounds in the floral scent were detected,most of which have previously been reported to be attractive to a broad spectrum of bee *** bioassays showed that both,visual cues alone and olfactory cues alone,are attractive to pollinating ***,vis-ual cues alone attracted significantly more approaches than olfactory cues alone,while olfactory cues alone elicited a significantly higher landing percentage than visual cues *** finding suggests that,in the ***-Anthophora ***,visual cues are mainly used for location from long distances,while olfactory cues mainly aid landing from short *** results indicate that different modalities of floral cues should be considered together to understand fully

关键词： bract floral scent olfactory cues spectral reflectance visual cues

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碳纤维复合材料压缩强度影响因素研究

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石油化工 2024年第4期53卷 525-531页

作者：张恒王若妍曾彤张洋高爱君王宇北京化工大学材料科学与工程学院北京100029 碳纤维及功能高分子教育部重点实验室北京100029

采用碳纤维束丝法制备碳纤维复合材料,借助DSC、XRD、SEM、万能材料试验机和动态接触角等测试方法,研究了碳纤维和树脂性能对碳纤维复合材料压缩强度的影响。实验结果表明,与环氧树脂E51相比,浇铸体拉伸模量较高的环氧树脂tDE85制备的... 详细信息

采用碳纤维束丝法制备碳纤维复合材料,借助DSC、XRD、SEM、万能材料试验机和动态接触角等测试方法,研究了碳纤维和树脂性能对碳纤维复合材料压缩强度的影响。实验结果表明,与环氧树脂E51相比,浇铸体拉伸模量较高的环氧树脂tDE85制备的碳纤维复合材料压缩强度较高;在本研究范围内,树脂环向支撑厚度增加有利于碳纤维复合材料压缩强度的提高;受微晶结构抵抗外界破坏能力的影响,htS40,CCF300,CCF700h三种碳纤维复合材料的压缩强度随着碳纤维拉伸强度和拉伸模量的增大而增大,而t800h,Gw5535,M40j三种碳纤维复合材料的压缩强度随拉伸模量的增加呈下降趋势。

关键词：碳纤维束丝压缩性能树脂拉伸模量

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Search for electron-antineutrinos associated with gravitational-wave events Gw150914,Gw151012,Gw151226,Gw170104,Gw170608,Gw170814,and Gw170817 at Daya Bay

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Chinese Physics C 2021年第5期45卷 190-201页

作者： F.P.An A.B.Balantekin h.R.Band M.Bishai S.Blyth G.F.Cao j.Cao j.F.Chang y.Chang h.S.Chen S.M.Chen y.Chen y.X.Chen j.Cheng Z.K.Cheng j.j.Cherwinka M.C.Chu j.P.Cummings O.Dalager F.S.Deng y.y.Ding M.V.Diwan t.Dohnal j.Dove M.Dvorak D.A.Dwyer j.P.Gallo M.Gonchar G.h.Gong h.Gong w.Q.Gu j.y.Guo L.Guo X.h.Guo y.h.Guo Z.Guo R.w.hackenburg S.hans M.he K.M.heeger y.K.heng A.higuera y.K.hor y.B.hsiung B.Z.hu j.R.hu t.hu Z.j.hu h.X.huang X.t.huang y.B.huang P.huber D.E.jaffe K.L.jen X.L.ji X.P.ji R.A.johnson D.jones L.Kang S.h.Kettell S.Kohn M.Kramer t.j.Langford j.Lee j.h.C.Lee R.t.Lei R.Leitner j.K.C.Leung F.Li j.j.Li Q.j.Li S.Li S.C.Li w.D.Li X.N.Li X.Q.Li y.F.Li Z.B.Li h.Liang C.j.Lin G.L.Lin S.Lin j.j.Ling j.M.Link L.Littenberg B.R.Littlejohn j.C.liu j.L.liu C.Lu h.Q.Lu j.S.Lu K.B.Luk X.B.Ma X.y.Ma y.Q.Ma C.Marshall D.A.Martinez Caicedo K.t.MeDonald R.D.McKeown y.Meng j.Napolitano D.Naumov E.Naumova j.P.Ochoa-Ricoux A.OIshevskiy h.-R.Pan j.Park S.Patton j.C.Peng C.S.j.Pun F.Z.Qi M.Qi X.qian N.Raper j.Ren C.Morales Reveco R.Rosero B.Roskovec X.C.Ruan h.Steiner j.L.Sun t.tmej K.treskov w.-h.tse C.E.tull B.Viren V.Vorobel C.h.wang j.wang M.wang N.y.wang R.G.wang w.wang w.wang X.wang y.wang y.F.wang Z.wang Z.wang Z.M.wang h.y.wei L.h.wei L.j.wen K.whisnant C.G.white h.L.h.wong E.worcester D.R.wu F.L.wu Q.wu w.j.wu D.M.Xia Z.Q.Xie Z.Z.Xing j.L.Xu t.Xu t.Xue C.G.yang L.yang y.Z.yang h.F.yao M.ye M.yeh B.L.young h.Z.yu Z.y.yu B.B.yue S.zeng y.zeng L.Zhan C.Zhang F.y.Zhang h.h.Zhang j.w.Zhang Q.M.Zhang X.t.Zhang y.M.Zhang y.X.Zhang y.y.Zhang Z.j.Zhang Z.P.Zhang Z.y.Zhang j.Zhao L.Zhou h.L.Zhuang j.h.Zou Instiute of Modern Physics East China University of Science and TechnologyShanghai 200237 University of wisconsin MadisonWisconsin 53706 wright Laboratory and Department of Physics Yale UniversityNew HavenConnecticut 06520 Brookhaven National Laboratory UptonNew York 11973 Department of Physics National Taiwan UniversityTaipei Institute of high Energy Physics Beijing 100049 National United University Miao-Li Department of Engineering Physics Tsinghua UniversityBejing 100084 Shenzhen University Shenzhen 518060 Sun yat-Sen(Zhongshan)University Guangzhou North China Electric Power University Bejjing 102206 Chinese University of hong Kong Hong Kong 999077 Siena College LoudonvilleNew York 12211 Department of Physics and Astronomy University of CaliforniaIrvineCaliformia 92697 University of Science and technology of China Hefei 230026 Charles University Faculty of Mathematics and PhysicsPrague Department of Physics University of llinois at Urbana-ChampaignUrbanaIlinois 61801 Lawrence Berkeley National Laboratory BerkeleyCalifornia 94720 Department of Physics Illinois Institute of TechnologyChicagoIllinois 60616 joint Institute for Nuclear Research DubnaMoscow Region Beijing Normal University Beijing 100875 Department of Nuclear Science and technology School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049 Department of Physics University of HoustonHoustonTexas 77204 China Institute of Atomic Energy Beijing 102413 Shandong University Jinan 250100 Guangxi University Nanning 530004 Center for Neutrino Physics Virginia TechBlacksburgVirginia 24061 Institute of Physics National Chiao-Tung UniversityHsinchu Department of Physics University of CincinnatiCincinnatiOhio 45221 Department of Physies Collge of Science and TechnologyTemple UniversityPhiladelphiaPennsylvania 19122 Dongguan University of technology Dongguan 523808 Department of Physics University of CaliforniaBerkeleyCalifornia 94720 Department of Physics The University of Hong KongPokfulamHong Kong 999077 School

the establishment of a possible connection between neutrino emission and gravitational-wave(Gw)bursts is important to our understanding of the physical processes that occur when black holes or neutron stars *** the Daya Bay experiment,using the data collected from December 2011 to August 2017,a search was per-formed for electron-antineutrino signals that coincided with detected Gw events,including Gw150914,Gw151012,Gw151226,Gw170104,Gw170608,Gw 170814,and Gw *** used three time windows of±10,±500,and±1000 s relative to the occurrence of the Gw events and a neutrino energy range of 1.8 to 100 MeV to search for correlated neutrino *** detected electron-antineutrino candidates were consistent with the expected background rates for all the three time *** monochromatic spectra,we found upper limits(90%confidence level)of the electron-antineutrino fluence of(1.13-2.44)×10^(11)cm^(-2)at 5 MeV to 8.0×10^(7)cm^(-2)at 100 MeV for the three time w *** the assumption of a Fermi-Dirac spectrum,the upper limits were found to be(5.4-7.0)×10^(9)cm^(2)for the three time windows.

关键词： grav itational waves electron-antineutrinos fluence upper limit

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Power Balance Estimation in Long Duration Discharges on QUESt

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Plasma Science and technology 2016年第11期18卷 1069-1075页

作者： K.hANADA h.ZUShI h.IDEI K.NAKAMURA M.IShIGURO S.tAShIMA E.I.KALINNIKOVA y.NAGAShIMA M.hASEGAwA A.FUjISAwA A.hIGAShIjIMA S.KAwASAKI h.NAKAShIMA O.MItARAI A.FUKUyAMA y.tAKASE X.gao h.liu j.qian M.ONO R.RAMAN Research Institute for Applied Mechanics Kyushu UniversityFukuoka 816-8580Japan Interdisciplinary Graduate School of Engineering Science Kyushu UniversityFukuoka 816-8580Japan School of Industrial Engineering Tokai UniversityKumamoto 862-8652Japan Graduate School of technology Kyoto UniversityKyoto 615-8530Japan Graduate School of Frontier Science University of TokyoChiba 277-8561Japan Institute of Plasma Physics Chinese Academy of SciencesHefei 230031China Princeton Plasma Physics Laboratory Princeton NJ 08540USA SAeronautics&Astronautics University of WashingtonSeattle WA 98195-2400USA

Fully non-inductive plasma start-up was successfully achieved by using a well- controlled microwave source on the spherical tokamak, QUESt. Non-inductive plasmas were maintained for approximately 3-5 min, during which time power balance estimates could be achieved by monitoring wall and cooling-water temperatures. Approximately 70%-90% of the injected power could be accounted for by calorimetric measurements and approximately half of the injected power was found to be deposited on the vessel wall, which is slightly dependent on the magnetic configuration. the power distribution to water-cooled limiters, which are expected to be exposed to local heat loads, depends significantly on the magnetic configuration, however some of the deposited power is due to energetic electrons, which have large poloidal orbits and are likely to be deposited on the plasma facing components.

关键词： steady state operation spherical tokamak plasma wall interaction power balance

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Studies of the 2α and 3α channels of the ^(12)C+^(12)C reaction in the range of E_(c.m.)=8.9 MeV to 21 MeV using the active target time Projection Chamber

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Chinese Physics C 2022年第10期46卷 116-125页

作者： X.y.wang N.t.Zhang Z.C.Zhang C.G.Lu t.L.Pu j.L.Zhang L.M.Duan B.S.gao K.A.Li y.t.Li y.qian L.h.Ru B.wang X.D.Xu h.y.Zhao w.P.Lin Z.w.Cai B.F.ji Q.t.Li j.y.Xu X.D.tang joint department for nuclear physics Institute of Modern Physics and Lanzhou UniversityChinese Academy of SciencesLanzhou 730000China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and technology Lanzhou UniversityLanzhou 730000China School of Nuclear Science and technology University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Radiation Physics and technology of the Ministry of Education Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064China School of Physics and State Key Laboratory of Nuclear Physics and technology Peking UniversityBeijing 100871China

the ^(12)C+^(12)C fusion reaction was studied in the range of E_(c.m.)=8.9 to 21 MeV using the active-target time Projection *** full information on all tracks of the reaction products,cross sections of the^(12)C(^(12)C,^(8)Be)^(16)O_(g.s.)channel and the ^(12)C(^(12)C,3a)^(12)C channel could be measured down to the level of a few *** ^(12)C(^(12)C,^(8)Be)^(16)O_(g.s.)reaction channel was determined to be 10_(-8)^(+24) mb at E_(c.m.)=11.1 MeV,supporting the direct a transfer reaction *** ^(12)C(^(12)C,3α)^(12)C reaction channel was studied for the first time using an exclusive *** result does not confirm the anomaly behavior reported in the previous inclusive measurement by Kolata et al.[***.C 21,579(1980)].Our comparisons with statistical model calculations suggest that the 3 a channel is dominated by the fusion evaporation process at E_(c.m.)>19 *** additional contribution of the 3 a channel increases the fusion reaction cross section by 10% at energies above 20 *** also find that an additional reaction mechanism is needed to explain the measured cross section at E_(c.m.)t which point the statistical model prediction vanishes.

关键词： fusion cross section Coulomb barrier time Projection Chamber active target

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Study of BESIII trigger efficiencies with the 2018 j/ψ data

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Chinese Physics C 2021年第2期45卷 48-55页

作者： M.Ablikim M.N.Achasov P.Adlarson S.Ahmed M.Albrecht R.Aliberti A.Amoroso M.R.An Q.An X.h.Bai y.Bai O.Bakina R.Baldini Ferroli I.Balossino y.Ban K.Begzsuren N.Berger M.Bertani D.Bettoni F.Bianchi j.Bloms A.Bortone I.Boyko R.A.Briere h.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin j.F.Chang w.L.Chang G.Chelkov D.y.Chen G.Chen h.S.Chen M.L.Chen S.j.Chen X.R.Chen y.B.Chen Z.j Chen w.S.Cheng G.Cibinetto F.Cossio X.F.Cui h.L.Dai X.C.Dai A.Dbeyssi R.E.de Boer D.Dedovich Z.y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori y.Ding C.Dong j.Dong L.y.Dong M.y.Dong X.Dong S.X.Du y.L.Fan j.Fang S.S.Fang y.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng j.h.Feng M.Fritsch C.D.Fu y.gao y.gao y.gao y.G.gao I.Garzia P.t.Ge C.Geng E.M.Gersabeck A Gilman K.Goetzen L.Gong w.X.Gong w.Gradl M.Greco L.M.Gu M.h.Gu S.Gu y.t.Gu C.y Guan A.Q.Guo L.B.Guo R.P.Guo y.P.Guo A.Guskov t.t.han w.y.han X.Q.hao F.A.harris h hüsken K.L.he F.h.heinsius C.h.heinz t.held y.K.heng C.herold M.himmelreich t.holtmann y.R.hou Z.L.hou h.M.hu j.F.hu t.hu y.hu G.S.huang L.Q.huang X.t.huang y.P.huang Z.huang t.hussain w.Ikegami Andersson w.Imoehl M.Irshad S.jaeger S.janchiv Q.ji Q.P.ji X.B.ji X.L.ji h.B.jiang X.S.jiang j.B.jiao Z.jiao S.jin y.jin t.johansson N.Kalantar-Nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.G.Kurth w.Kühn j.j.Lane j.S.Lange P.Larin A.Lavania L.Lavezzi Z.h.Lei h.Leithoff M.Lellmann t.Lenz C.Li C.h.Li Cheng Li D.M.Li F.Li G.Li h.Li h.Li h.B.Li h.j.Li j.L.Li j.Q.Li j.S.Li Ke Li L.K.Li Lei Li P.R.Li S.y.Li w.D.Li w.G.Li X.h.Li X.L.Li Z.y.Li h.Liang h.Liang h.Liang y.F.Liang y.t.Liang L.Z.Liao j.Libby C.X.Lin B.j.liu C.X.liu D.liu F.h.liu Fang liu Feng liu h.B.liu h.M.liu huanhuan liu huihui liu j.B.liu j.L.liu j.y.liu K.liu K.y.liu Ke liu L.liu M.h.liu P.L.liu Q.liu Q.liu S.B.liu Shuai liu t.liu w.M.liu X.liu y.liu y.B.liu Z.A.liu Z.Q.liu X.C.Lou F.X.Lu h.j.Lu j.D.Lu j.G.Lu X.L.Lu y.Lu y.P.Lu C.L.Luo M.X.Luo b P.w.Luo t.Luo X.L.Luo S Institute of high Energy Physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petrochemical technology Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China China Center of Advanced Science and technology Beijing 100190China COMSAtS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China GIBudker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI helmholtzcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China hangzhou Normal University Hangzhou 310036China helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany henan Normal University Xinxiang 453007China henan University of Science and technology Luoyang 471003China huangshan College Huangshan 245000China hunan Normal University Changsha 410081China hunan University Changsha 410082China Indian Institute of technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA (A)INFN Laboratori Nazionali di Frascati I-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly (A)INFN Sezione di Ferrara I-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Institute of Modern Physics Lanzhou 730000China Institute of Physics and technology Peace Ave54BUlaanbaatar 13330Mongolia jilin University Changchun 130012China johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany joint Institute for Nuclear Research 141980 DubnaMoscow regionRussia justus-Liebig-Universitaet Giessen IIPhysikalisches InstitutHeinrich-Buff-Ring 16D-35392GiessenGermany KVI-CARt University of GroningenNL-9747 AA GroningenThe Netherlands Lanzhou University Lanzhou 730000China Liaoning Normal Unive

Using a dedicated data sample taken in 2018 on the j/ψpeak,we perform a detailed study of the trigger efficiencies of the BESIII *** efficiencies are determined from three representative physics processes,namely Bhabha scattering,dimuon production and generic hadronic events with charged *** combined efficiency of all active triggers approaches 100%in most cases,with uncertainties small enough not to affect most physics analyses.

关键词： BESIII trigger efficiency Bhabha dimuon hadronic events

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