检索结果-内蒙古大学图书馆

arXiv 2024年

作者： Liu, J.X. Yang, L.T. Yue, Q. Kang, K.J. Li, Y.J. An, H.P. Greeshma, C. Chang, J.P. Chen, Y.H. Cheng, J.P. Dai, W.H. Deng, Z. Fang, C.H. Geng, X.P. Gong, H. Guo, Q.J. Guo, T. Guo, X.Y. He, L. He, J.R. Hu, J.W. Huang, H.X. Huang, T.C. Jiang, L. Karmakar, S. Li, H.B. Li, H.Y. Li, J.M. Li, J. Li, M.C. Li, Q.Y. Li, R.M.J. Li, X.Q. Li, Y.L. Liang, Y.F. Liao, B. Lin, F.K. Lin, S.T. Liu, S.K. Liu, Y.D. Liu, Y. Liu, Y.Y. Ma, H. Mao, Y.C. Nie, Q.Y. Pan, H. Qi, N.C. Ren, J. Ruan, X.C. Shen, M.B. Singh, M.K. Sun, T.X. Sun, W.L. Tang, C.J. Tian, Y. Wang, G.F. Wang, J.Z. Wang, L. Wang, Q. Wang, Y.F. Wang, Y.X. Wong, H.T. Wu, Y.C. Xing, H.Y. Xiong, K.Z. Xu, R. Xu, Y. Xue, T. Yan, Y.L. Yi, N. Yu, C.X. Yu, H.J. Zeng, M. Zeng, Z. Zhang, B.T. Zhang, F.S. Zhang, L. Zhang, P. Zhang, Z.H. Zhang, Z.Y. Zhao, J.Z. Zhao, K.K. Zhao, M.G. Zhou, J.F. Zhou, Z.Y. Zhu, J.J. Key Laboratory of Particle and Radiation Imaging Ministry of Education Department of Engineering Physics Tsinghua University Beijing100084 China Department of Physics Tsinghua University Beijing100084 China Institute of Physics Academia Sinica Taipei11529 Taiwan NUCTECH Company Beijing100084 China YaLong River Hydropower Development Company Chengdu610051 China College of Nuclear Science and Technology Beijing Normal University Beijing100875 China College of Physics Sichuan University Chengdu610065 China School of Physics Peking University Beijing100871 China Department of Nuclear Physics China Institute of Atomic Energy Beijing102413 China Sino-French Institute of Nuclear and Technology Sun Yat-sen University Zhuhai519082 China School of Physics Nankai University Tianjin300071 China Department of Physics Banaras Hindu University Varanasi221005 India Department of Physics Beijing Normal University Beijing100875 China

We present the first results of the search for sub-MeV fermionic dark matter absorbed by electron targets of Germanium using the 205.4 kg·day data collected by the CDEX-10 experiment, with the analysis threshold of 160 eVee. No significant dark matter (DM) signals over the background are observed. Results are presented as limits on the cross section of DM-electron interaction. We present new constraints of cross section in the DM range of 0.1-10 keV/c2 for vector and axial-vector interaction. The upper limit on the cross section is set to be 5.5 × 10−46 cm2 for vector interaction, and 1.8 × 10−46 cm2 for axial-vector interaction at DM mass of 5 keV/c2 Copyright © 2024, The Authors. All rights reserved.

关键词： Dark Matter

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Probing Dark Matter Particles from Evaporating Primordial Black Holes via Electron Scattering in the CDEX-10 Experiment

arXiv

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arXiv 2024年

作者： Zhang, Z.H. Yang, L.T. Yue, Q. Kang, K.J. Li, Y.J. An, H.P. Greeshma, C. Chang, J.P. Chen, Y.H. Cheng, J.P. Dai, W.H. Deng, Z. Fang, C.H. Geng, X.P. Gong, H. Guo, Q.J. Guo, T. Guo, X.Y. He, L. He, S.M. Hu, J.W. Huang, H.X. Huang, T.C. Jiang, L. Karmakar, S. Li, H.B. Li, H.Y. Li, J.M. Li, J. Li, Q.Y. Li, R.M.J. Li, X.Q. Li, Y.L. Liang, Y.F. Liao, B. Lin, F.K. Lin, S.T. Liu, J.X. Liu, S.K. Liu, Y.D. Liu, Y. Liu, Y.Y. Ma, H. Mao, Y.C. Nie, Q.Y. Ning, J.H. Pan, H. Qi, N.C. Ren, J. Ruan, X.C. Singh, M.K. Sun, T.X. Tang, C.J. Tian, Y. Wang, G.F. Wang, J.Z. Wang, L. Wang, Q. Wang, Y.F. Wang, Y.X. Wong, H.T. Wu, S.Y. Wu, Y.C. Xing, H.Y. Xu, R. Xu, Y. Xue, T. Yan, Y.L. Yi, N. Yu, C.X. Yu, H.J. Yue, J.F. Zeng, M. Zeng, Z. Zhang, B.T. Zhang, F.S. Zhang, L. Zhang, Z.Y. Zhao, J.Z. Zhao, K.K. Zhao, M.G. Zhou, J.F. Zhou, Z.Y. Zhu, J.J. Key Laboratory of Particle and Radiation Imaging Ministry of Education Department of Engineering Physics Tsinghua University Beijing100084 China Department of Physics Tsinghua University Beijing100084 China Institute of Physics Academia Sinica Taipei11529 Taiwan NUCTECH Company Beijing100084 China YaLong River Hydropower Development Company Chengdu610051 China College of Nuclear Science and Technology Beijing Normal University Beijing100875 China College of Physics Sichuan University Chengdu610065 China School of Physics Peking University Beijing100871 China Department of Nuclear Physics China Institute of Atomic Energy Beijing102413 China Sino-French Institute of Nuclear and Technology Sun Yat-sen University Zhuhai519082 China School of Physics Nankai University Tianjin300071 China Department of Physics Banaras Hindu University Varanasi221005 India Department of Physics Beijing Normal University Beijing100875 China

Dark matter (DM) is a major constituent of the Universe. However, no definite evidence of DM particles (denoted as "χ") has been found in DM direct detection (DD) experiments to date. There is a novel concept of detecting χ from evaporating primordial black holes (PBHs). We search for χ emitted from PBHs by investigating their interaction with target electrons. The examined PBH masses range from 1×1015to 7×1016g under the current limits of PBH abundance fPBH. Using 205.4 kg day data obtained from the CDEX-10 experiment conducted in the China Jinping Underground Laboratory, we exclude the χ-electron (χ-e) elastic-scattering cross section σχe ∼ 5 × 10-29cm2for χ with a mass mχ 0.1 keV from our results. With the higher radiation background but lower energy threshold (160 eV), CDEX-10 fill a part of the gap in the previous work. If (mχ, σχe) can be determined in the future, DD experiments are expected to impose strong constraints on fPBH for large MPBHs. Copyright © 2024, The Authors. All rights reserved.

关键词： Electron scattering

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Sub-Picosecond-Level Laser-Based Underwater Transfer of Radio Frequency with Optical Phase Compensation 20

Sub-Picosecond-Level Laser-Based Underwater Transfer of Radi...

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20th IEEE International Conference on Communication technology, ICCT 2020

作者： Pan, Bisong Li, Haopengyu Hou, Dong Zhao, Jianye Univ. of Electronic Science and Technology of China School of Automation Engineering Chengdu China Peking University College of Elec. Engineering and Computer Science Beijing China

ISBN: (纸本)9781728181417

We demonstrated a sub-picosecond laser-based underwater frequency transfer with an optical phase compensation. With this transfer technique, a highly-stable 500 MHz radio-frequency (RF) signal was disseminated over a 5-m underwater link for 5000 s, and the characteristic of the timing fluctuation and instability for the transfer was analyzed and measured. The experimental results show the total root-mean-square (RMS) timing fluctuation of the transferred RF signal with compensation is about 162 fs with a fractional frequency instability on the order of 2.8 × 10-13 at 1 s and 2.7 × 10-16 at 1000 s. The laser-based underwater frequency transfer proposed in this paper has a potential application of transferring atomic clock in water environment as its instability is less than the currently-used commercial Cs or H-master clocks. © 2020 IEEE.

关键词： Stability

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Design of multi-Sensor Cooperative Detection Architecture Based on Analytic Hierarchy Process

Design of multi-Sensor Cooperative Detection Architecture Ba...

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International Conference on Communication engineering and technology (ICCET)

作者： Kaiyu Li Xinxin Cai Jialei Liu Shuang Huang Yuanbao Chen Wenlin Wang Yang Yu Quanhua Zhu Zhihui Xu Dagui Wang Naval University of Engineering Wuhan Second Ship Design and Research Institute Wuhan China Naval University of Engineering Wuhan China Wuhan Second Ship Design and Research Institute Wuhan China Sino-German College of Intelligent Manufacturing Shenzhen Technology University Shenzhen China Nuclear Power Institute of China Chengdu China China Ship Scientific Research Center Wuxi China State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment Shenzhen China School of Mechanical and Electrical Engineering C Anhui Jianzhu University Hefei China

Due to the diversity of information sources, the information provided by a single sensor can no longer meet the needs. Therefore, multi-sensor collaborative detection technology is a hot topic in the current research field. At present, there is no recognized, reasonable and effective method for evaluating the effectiveness of multi-sensor collaborative detection. To solve this problem, this paper will take sonar sensor, magnetic detector and infrared detector as the research object, and propose a multi- sensor collaborative detection architecture based on analytic hierarchy process to provide technical support for multi-sensor collaborative detection technology.

关键词： Infrared detectors Collaboration Sonar Analytic hierarchy process Detectors Magnetic analysis Data communication

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Search for solar axions by Primakoff effect with the full dataset of the CDEX-1B Experiment

arXiv

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arXiv 2024年

作者： Yang, L.T. Liu, S.K. Yue, Q. Kang, K.J. Li, Y.J. An, H.P. Greeshma, C. Chang, J.P. Chen, Y.H. Cheng, J.P. Dai, W.H. Deng, Z. Fang, C.H. Geng, X.P. Gong, H. Guo, Q.J. Guo, T. Guo, X.Y. He, L. He, J.R. Hu, J.W. Huang, H.X. Huang, T.C. Jiang, L. Karmakar, S. Li, H.B. Li, H.Y. Li, J.M. Li, J. Li, M.C. Li, Q.Y. Li, R.M.J. Li, X.Q. Li, Y.L. Liang, Y.F. Liao, B. Lin, F.K. Lin, S.T. Liu, J.X. Liu, Y.D. Liu, Y. Liu, Y.Y. Ma, H. Mao, Y.C. Nie, Q.Y. Pan, H. Qi, N.C. Ren, J. Ruan, X.C. Shen, M.B. Singh, M.K. Sun, T.X. Sun, W.L. Tang, C.J. Tian, Y. Wang, G.F. Wang, J.Z. Wang, L. Wang, Q. Wang, Y.F. Wang, Y.X. Wong, H.T. Wu, Y.C. Xing, H.Y. Xiong, K.Z. Xu, R. Xu, Y. Xue, T. Yan, Y.L. Yi, N. Yu, C.X. Yu, H.J. Zeng, M. Zeng, Z. Zhang, B.T. Zhang, F.S. Zhang, L. Zhang, P. Zhang, Z.H. Zhang, Z.Y. Zhao, J.Z. Zhao, K.K. Zhao, M.G. Zhou, J.F. Zhou, Z.Y. Zhu, J.J. Department of Engineering Physics Tsinghua University Beijing100084 China College of Physics Sichuan University Chengdu610065 China Department of Physics Tsinghua University Beijing100084 China Institute of Physics Academia Sinica Taipei11529 Taiwan NUCTECH Company Beijing100084 China YaLong River Hydropower Development Company Chengdu610051 China College of Nuclear Science and Technology Beijing Normal University Beijing100875 China School of Physics Peking University Beijing100871 China Department of Nuclear Physics China Institute of Atomic Energy Beijing102413 China Sino-French Institute of Nuclear and Technology Sun Yat-sen University Zhuhai519082 China School of Physics Nankai University Tianjin300071 China Department of Physics Banaras Hindu University Varanasi221005 India Department of Physics Beijing Normal University Beijing100875 China

We present the first limit on gAγ coupling constant using the Bragg-Primakoff conversion based on an exposure of 1107.5 kg days of data from the CDEX-1B experiment at the China Jinping Underground Laboratory. The data are consistent with the null signal hypothesis, and no excess signals are observed. Limits of the coupling gAγ −9 GeV−1 (95% C.L.) are derived for axions with mass up to 100 eV/c2. Within the hadronic model of KSVZ, our results exclude axion mass > 5.3 eV/c2 at 95% C.L. Copyright © 2024, The Authors. All rights reserved.

关键词： Germanium alloys

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First result from the Jinping Underground nuclear Astrophysics experiment JUNA:precise measurement of the 92 keV ^(25)Mg(p,γ)^(26)Al resonance

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Science Bulletin 2022年第2期67卷 125-132,M0003页

作者： Jun Su Hao Zhang Zhihong Li Paolo Ventura Yunju Li Ertao Li Chen Chen Yangping Shen Gang Lian Bing Guo Xinyue Li Liyong Zhang Jianjun He Yaode Sheng Yinji Chen Luohuan Wang Long Zhang Fuqiang Cao Wei Nan Weike Nan Gexing Li Na Song Baoqun Cui Lihua Chen Ruigang Ma Zhicheng Zhang Taoyu Jiao Bingshui Gao Xiaodong Tang Qi Wu Jiaqing Li Liangting Sun Shuo Wang Shengquan Yan Junhui Liao Youbao Wang Sheng Zeng Ding Nan Qiwen Fan Ningchun Qi Wenliang Sun Xuyuan Guo Peng Zhang Yunhua Chen Yong Zhou Jifang Zhou Jinrong He Changsong Shang Mingchuan Li Jianping Cheng Weiping Liu JUNA Collaboration China Institute of Atomic Energy P.O.Box 275(10)Beijing 102413China Key Laboratory of Beam Technology of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 101408China INAF Osservatorio Astronomico di RomaVia Frascati 33Monte Porzio Catone(RM)00077Italy College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment Institute of Space SciencesShandong UniversityWeihai 264209China Yalong River Hydropower Development Company Chengdu 610051China 不详

The ^(25)Mg(p,γ)^(26)Al reaction plays an important role in the study of cosmic 1.809 MeV γ-ray as a signature of ongoing nucleosynthesis in the *** astrophysical temperature around 0.1 GK,the ^(25)Mg(p,γ)^(26)Al reaction rates are dominated by the 92 keV resonance capture *** report a precise measurement of the 92 keV ^(25)Mg(p,γ)^(26)Al resonance in the day-one experiment at Jinping Underground nuclear Astrophysics experiment(JUNA)facility in the China Jinping Underground Laboratory(CJPL).The resonance strength and ground state feeding factor are determined to be 3.8±0.3×10^(-10) eV and 0:660:04,*** results are in agreement with those reported in the previous direct underground measurement within uncertainty,but with significantly reduced ***,we recommend new ^(25)Mg(p,γ)^(26)Al reaction rates which are by a factor of 2.4 larger than those adopted in REACLIB database at the temperature around 0.1 *** new results indicate higher production rates of ^(26g)Al and the cosmic 1.809 MeV γ-*** implication of the new rates for the understanding of other astrophysical situations is also discussed.

关键词： nuclear astrophysics Underground laboratory Cosmic c ray Resonance reaction 26Al

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Study on the Performance of SY-01 Satellite Gamma-Ray Detector

Study on the Performance of SY-01 Satellite Gamma-Ray Detect...

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International Conference on Electronic Measurement and Instruments, ICEMI

作者： Xiaoyu Qie Siming Guo Jiang He Zheng Jiang Tao Yu Xing Wen Shiwei Ren Zhenghua An Jinjie Wu School of Science Hebei University of Science and Technology Shijiazhuang China Division of Ionizing Radiation Metrology National Institute of Metrology(NIM) Beijing China Key Laboratory of Particle Astrophysics Institute of High Energy Physics Beijing China The College of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu China

ISBN: (纸本)9781665444927

The New Space technology Test Satellite (SY-01) is scheduled to carry out its first flight with a Chinese aerospace rocket, carrying multiple payloads to carry out space scientific exploration missions. SY-01 can carry multiple payloads to carry out space exploration missions. Among them, the High Energy Burst Researcher (HEBS) is one of the important payloads on the satellite. It will monitor the high-energy electromagnetic counterparts of gravitational wave events throughout the day and discover large samples of gamma-ray bursts. This paper mainly introduces the ground test experiment of the HEBS payload gamma-ray detector (GRD) and studies energy resolution and energy linearity in the range of (38–80)keV. The test results show that the GRD has good performance in the low-energy region, which can meet the requirements of monitoring gravitational wave gamma-ray bursts on-orbit.

关键词： Satellites Gamma-ray bursts Space missions Energy resolution Linearity Gravitational waves Detectors

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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

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Study on the influence of the gas superficial velocity on the radon adsorption of activated carbon

Study on the influence of the gas superficial velocity on th...

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2019 International Conference on applied Machine Learning and Data Science, ICAMLDS 2019

作者： Wang, Meng Gu, Yi Li, Fei Ge, Liangquan Lu, Heng Luo, Liang College of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu610059 China Key Laboratory of Applied Nuclear Techniques in Geosciences Sichuan Chengdu University of Technology Chengdu610059 China Chongqing Jian An Instrument Co Ltd Chongqing400060 China

In order to improve the radon adsorption efficiency of activated carbon and provide a reference for reducing the cost of radon purification, the radon adsorption experiment of activated carbon under different gas superficial velocities under the active adsorption mode was studied to measure the radon adsorption quantity of activated carbon. The radon adsorption quantity of apricot shell activated carbon and coal-based activated carbon did not change significantly with the increase of the gas superficial velocity. When the gas superficial velocity increased from 0.9cm/s to 2.0cm/s in turn, the radon adsorption quantity of coconut shell activated carbon did not change significantly. The radon adsorption quantity of coconut shell activated carbon increased first and then decreased when the gas superficial velocity increased from 2.0cm/s to 3.1cm/s. When the gas superficial velocity was about 2.7cm/s, the radon adsorption quantity of coconut shell activated carbon reached its peak value. 2.7cm/s can be selected as the optimum gas superficial velocity for the radon adsorption of coconut shell activated carbon. © Published under licence by IOP Publishing Ltd.

关键词： Activated carbon

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Artificial Potential-Based Formation Control with Collision and Obstacle Avoidance for Second-order Multi-Agent Systems 7

Artificial Potential-Based Formation Control with Collision ...

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7th International Conference on Information, Cybernetics, and Computational Social Systems, ICCSS 2020

作者： Yang, Shun Li, Tieshan Shi, Quan Bai, Weiwei Wu, Yue Navigation College Dalian Maritime University Dalian Liaoning China School of Automation Engineering University of Electronic Science and Technology of China Chengdu Sichuan China School of Electronical Engineering Southwest Jiaotong University Chengdu Sichuan China

ISBN: (纸本)9781728162461

A formation control strategy with collision avoidance and obstacle avoidance mechanisms is proposed for second-order continuous multi-agent systems (MAS) under a directed topology. The control objectives can be achieved by introducing artificial potential field (APF) methods and the leader-follower formation methods. The leader-follower formation methods are employed to assist follower agents to obtain the coordination of positions and consensus of velocities with the leader-agent, the control objectives of formation generation and formation maintenance can be achieved. In the APF methods, obstacles and agents are regarded as high potential fields. The repulsive forces provided by the potential fields can solve the problems of avoiding collisions among agents and avoiding the extern-obstacles. By using Lyapunov stability theory and graph theory, the fact, the stability of the closed-loop MAS can be guaranteed, is proven. In the end, the simulation results verified the effectiveness of the proposed formation control strategy. © 2020 IEEE.

关键词： Multi agent systems

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