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Detecting neutrinos from supernova bursts in PandaX-4T

Chinese Physics C 2024年第7期48卷 14-21页

作者：庞彬宇阿布都沙拉木·阿布都克力木薄子豪陈葳谌勋程晨成兆侃崔祥仪樊英杰方德清符长波付孟婷耿立升 Karl Giboni 顾琳慧郭绪元韩晨成韩柯何昶达何金荣黄迪黄彦霖黄俊挺黄周侯汝全侯钰季向东巨永林李晨翔李家富李名川李帅杰李涛林箐刘江来陆聪聪芦晓盈罗棱尹罗云阳马文博马余刚冒亚军孟月宁旭阳祁宁春钱志成任祥祥 Nasir Shaheed 尚晓凤邵熙元申国防司琳孙文良谈安迪陶奕王安庆王萌王秋红王少博王思广王为王秀丽王舟魏月环武蒙蒙邬维浩夏经铠肖梦姣肖翔谢鹏伟燕斌斌颜玺雨杨继军杨勇姚玉坤喻纯旭袁影苑哲鑫宁张丹张敏桢张鹏张世博张澍张涛张洋张瀛心张园园赵力郑其斌周济芳周宁周小朋周永周钰博 New Cornerstone Science Laboratory Tsung-Dao Lee InstituteShanghai Jiao Tong UniversityShanghai200240China research center for Particle Science and Technology Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237ShandongChina Key Laboratory of Particle Physics and Particle Irradiation of Ministry of Education Shandong UniversityQingdao 266237ShandongChina School of Physics and Astronomy Shanghai Jiao Tong UniversityKey Laboratory for Particle Astrophysics and Cosmology(MoE)Shanghai Key Laboratory for Particle Physics and CosmologyShanghai 200240China Shanghai Jiao Tong University Sichuan research Institute Chengdu 610213China School of Physics Sun Yat-Sen UniversityGuangzhou 510275China Sino-French Institute of Nuclear engineering and Technology Sun Yat-Sen UniversityZhuhai519082China Department of Physics Yantai UniversityYantai 264005China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China School of Physics Peking UniversityBeijing 100871China School of Physics Beihang UniversityBeijing 102206China International research center for Nuclei and Particles in the Cosmos&Beijing Key Laboratory of advanced Nuclear Materials and Physics Beihang UniversityBeijing 100191China School of Physics and Microelectronics Zhengzhou UniversityZhengzhouHenan 450001China Yalong River Hydropower Development Company Ltd.288 Shuanglin RoadChengdu 610051China School of Medical instrument and Food engineering University of Shanghai for Science and TechnologyShanghai 200093China School of Mechanical engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Physics University of MarylandCollege ParkMaryland 20742USA State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China School of Physics Nankai UniversityTian

Neutrinos from core-collapse supernovae are essential for understanding neutrino physics and stellar ***-phase xenon dark matter detectors can be used to track explosions of galactic supernovae by detecting neutrinos through coherent elastic neutrino-nucleus *** this study,a variation of progenitor masses and explosion models are assumed to predict neutrino fluxes and spectra,which result in the number of expected neutrino events ranging from 6.6 to 13.7 at a distance of 10 kpc over a 10-s duration with negligible backgrounds at *** specialized triggering alarms for monitoring supernova burst neutrinos are *** efficiency of detecting supernova explosions at various distances in the Milky Way is *** alarms will be implemented in the real-time supernova monitoring system at PandaX-4T in the near future,which will provide supernova early warnings for the astronomical community.

关键词： core-collapse supernovae neutrinos liquid xenon detectors supernova early warnings

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Theoretical and experimental analyses of recording mark microstructures in signal waveform modulation optical disc

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Chinese Physics B 2010年第7期19卷 338-343页

作者：刘海龙裴京倪屹潘龙法唐毅 Optical Memory National engineering research center Department of Precision InstrumentTsinghua University Measurement Technology & instrumentation Key Lab of Hebei Province Yanshan University

In this paper, we propose a dynamic mastering process model for signal waveform modulation （SWM） optical disc. To form the ideal microstructures and solve the problems in the SWM master manufacturing process, we use this model to simulate the three-dimensional mark profiles in the SWM read-only disc. The simulated micro-patterns of recording pits and lands are employed to optimize the writing strategy and provide a quantitative basis for manufacturing the sub-pits and sub-lands. The simulation mark profiles are compared with the experimental ones, which are produced with the optimized writing strategy parameters. Comparison results demonstrate that the simulated profiles are highly consistent with the actual ones.

关键词： mark microstructures SWM mastering model writing strategy

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In-situ laser-induced surface damage inspection based on image super-resolution and adaptive segmentation method

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Chinese Optics Letters 2022年第7期20卷 7-12页

作者： Fengdong Chen Jingyang Sun Qian Wang Hongbo Zhu Fa Zeng Yueyue Han Cheng Lu Guodong Liu instrument Science and Technology Harbin Institute of TechnologyHarbin 150001China research center of Laser Fusion China Academy of Engineering PhysicsMianyang 621900China

In-situ laser-induced surface damage inspection plays a key role in protecting the large aperture optics in an inertial confinement fusion(ICF)high-power laser *** order to improve the initial damage detection capabilities,an in-situ inspection method based on image super-resolution and adaptive segmentation method is *** transfer learning and integration of various attention mechanisms,the super-resolution reconstruction of darkfield images with less texture information is effectively realized,and,on the basis of image super-resolution,an adaptive image segmentation method is designed,which effectively adapts to the damage detection problems under conditions of uneven illumination and weak *** online experiment was carried out by using edge illumination and the telescope optical imaging system,and the validity of the method was proved by the experimental results.

关键词： laser optic damage image super-resolution image segmentation

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Climate change drives flooding risk increases in the Yellow River Basin

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Geography and Sustainability 2024年第2期5卷 193-199页

作者： Hengxing Lan Zheng Zhao Langping Li Junhua Li Bojie Fu Naiman Tian Ruixun Lai Sha Zhou Yanbo Zhu Fanyu Zhang Jianbing Peng John J.Clague State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China School of Geological engineering and Geomatics Chang’an UniversityXi’an 710064China University of Chinese Academy of Sciences Beijing 10049China Yellow River Institute of Hydraulic research Yellow River Conservancy CommissionZhengzhou 450003China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China State Key Laboratory of Earth Surface Processes and Resources Ecology Beijing Normal UniversityBeijing 100875China Key Laboratory of Mechanics on Disaster and Environment in Western China The Ministry of Education of ChinaSchool of Civil Engineering and MechanicsLanzhou UniversityLanzhou 730000China Department of Earth Sciences Simon Fraser UniversityBurnabyCanada

The Yellow River Basin(YRB)has experienced severe floods and continuous riverbed elevation throughout *** climate change has been suggested to be driving a worldwide increase in flooding ***,owing to insufficient evidence,the quantitative correlation between flooding and climate change remains *** present a long time series of maximum flood discharge in the YRB dating back to 1843 compiled from historical documents and instrument *** in yearly maximum flood discharge show distinct periods:a dramatic decreasing period from 1843 to 1950,and an oscillating gentle decreasing from 1950 to 2021,with the latter period also showing increasing more extreme floods.A Mann-Kendall test analysis suggests that the latter period can be further split into two distinct sub-periods:an oscillating gentle decreasing period from 1950 to 2000,and a clear recent increasing period from 2000 to *** further predict that climate change will cause an ongoing remarkable increase in future flooding risk and an∼44.4 billion US dollars loss of floods in the YRB in 2100.

关键词： Flooding risk Risk management Climate change Flood discharge Extreme precipitation

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Multi-focused droplet lens array inspired by movable-type printing technology

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Chinese Optics Letters 2021年第10期19卷 55-60页

作者： Bo Dai Zhengmeng Zhou Yan Long Mingliang Pan Zeyuan Song Dawei Zhang engineering research center of Optical instrument and System Ministry of Education and Shanghai Key Laboratory of Modern Optical SystemUniversity of Shanghai for Science and TechnologyShanghai 200093China

A straightforward,cost-effective scheme for fabricating multi-focus droplet lens arrays is *** lenses can be rapidly produced by dripping liquid-state polydimethylsiloxane droplets on the square glass *** focal length of the lenses can be precisely controlled by adjusting the mass of the droplet.A group of prepared mini lenses can be flexibly assembled in a three-dimensional printed *** lenses are tightly packed together,ensuring a high filling factor of the lens *** lens array consisting of the mini lenses with a proper combination of focal length can capture images of interests at different depth.

关键词： optical design and fabrication lenses

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Thickness dependency of nonlinear optical properties in ITO/Sn composite films

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中国光学快报:英文版 2023年第8期21卷 65-70页

作者：南博洋洪瑞金陶春先王琦林辉韩朝霞张大伟 engineering research center of Optical instrument and System Ministry of Education and Shanghai Key Laboratory of Modern Optical SystemUniversity of Shanghai for Science and TechnologyShanghai 200093China

In this study,a batch of indium tin oxide(ITO)/Sn composites with different ratios was obtained based on the principle of thermal evaporation by an electron *** crystalline structure,surface shape,and optical characterization of the films were researched using an X-ray diffractometer,an atomic force microscope,a UV-Vis-NIR dual-beam spectrophotometer,and an open-hole Z-scan *** varying the relative thickness ratio of the ITO/Sn bilayer film,tunable nonlinear optical properties were *** nonlinear saturation absorption coefficientβmaximum of the ITO/Sn composites is−10.5×10^(−7)cm/W,approximately 21 and 1.72 times more enhanced compared to monolayer ITO and Sn,***,the improvement of the sample nonlinear performance was verified using finite-difference in temporal domain simulations.

关键词： ITO/Sn composite film Z-scan nonlinear absorption characteristic synergistic effect electric field

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Electron-beam irradiation induced optical transmittance enhancement for Au/ITO and ITO/Au/ITO multilayer thin films

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Journal of Materials Science & Technology 2017年第10期33卷 1107-1112页

作者： Wenzuo Wei Ruijin Hong Jinxia Wang Chunxian Tao Dawei Zhang engineering research center of Optical instrument and System Ministry of Education and Shanghai Key Lab of Modern Optical System University of Shanghai for Science and Technology Shanghai 200093 China

Electron beam（EB） irradiation experiments on Au/ITO and ITO/Au/ITO multilayer thin films are *** structure and the optical-electrical properties of the samples were investigated by X-ray diffraction,atomic force microscopy, four-point probe resistivity measurement system, and UV–vis-NIR double beam spectrometer, respectively. Those results show that the EB irradiation has the effects of improving the crystalline of samples, widening the optical band gap of both thin films, reducing the sheet resistance,and improving the transmittance of samples.

关键词： EB irradiation Multilayer thin films Structure Optical-electrical properties Transmittance

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Non-contact thickness measurement for ultra-thin metal foils with differential white light interferometry

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Chinese Optics Letters 2004年第12期2卷 701-703页

作者：杜艳丽严惠民吴勇姚晓强聂永军施柏煊 State Key Lab of Modern Optical instrumentation National engineering & Technology research center for Optical instrument Zhejiang University Hangzhou 310027

A new differential white light interference technique for the thickness measurements of metal foil is presented. In this work, the differential white light system consists of two Michelson interferometers in tandem, and the measured reflective surfaces are the corresponding surfaces of metal foil. Therefore, the measuring result is only relative to the thickness but not the position of metal foil. The method is non-contact and non-destructive, it has the advantages of high accuracy, fast detection, and compact structure. Theoretical analysis and preliminary experimental verifications have shown that the technique can be used to measure the thickness of foil in the range of 1 to 80 μm with accuracy better than 0.08 μm.

关键词： Interferometers Interferometry Metal foil Ultrathin films

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Fluorescence Nanoscopy in Neuroscience

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engineering 2022年第9期16卷 29-38页

作者： Yangyundou Wang Jian Lin Qiming Zhang Xi Chen Haitao Luan Min Gu center for Artificial-Intelligence nanophotonics School of Optical-Electrical and Computer EngineeringUniversity of Shanghai for Science and TechnologyShanghai 200093China

Fluorescence nanoscopy provides imaging techniques that overcome the diffraction-limited resolution barrier in light microscopy,thereby opening up a new area of research in biomedical imaging in fields such as ***,we review the foremost fluorescence nanoscopy techniques,including descriptions of their applications in elucidating protein architectures and mobility,the real-time determination of synaptic parameters involved in neural processes,three-dimensional imaging,and the tracking of nanoscale neural *** conclude by discussing the prospects of fluorescence nanoscopy,with a particular focus on its deployment in combination with related techniques(e.g.,machine learning)in neuroscience.

关键词： Fluorescence imaging Diffraction limit Nanoscale resolution Neuroscience

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Brillouin wavelength-selective all-optical polarization conversion

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Photonics research 2020年第4期8卷 440-447页

作者： DIEGO SAMANIEGO BORJA VIDAL nanophotonics Technology center Universitat Politecnica de Valencia46022 ValenciaValenciaSpain

The manipulation of the polarization properties of light in guided media is crucial in many classical and quantum optical ***,the capability of current technology to finely define the state of polarization of particular wavelengths is far from the level of maturity in amplitude ***,we introduce a light-by-light polarization control mechanism with wavelength selectivity based on the change of the phase retardance by means of stimulated Brillouin *** show that any point on the Poincare sphere can be reached from an arbitrary input state of polarization with little variation of the signal amplitude(engineering,sensing,quantum systems,and light-based probing of chemical and biological systems.

关键词： Brillouin wavelength-selective all-optical polarization conversion

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