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How to Get Worthy Follow-up Candidates of Fast-rotating Asteroids from Sparse Wide Field Survey Telescope(WFST)Data 认领 引用
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作者 Bing-Xue Fu Xu Kong +14 位作者 Jun-Qiang Lu Shao-Han Wang Min-Xuan Cai Lu-Lu Fan Feng Li Ming Liang Hao Liu Wen-Tao Luo Jin-Long Tang Zhen Wan Jian Wang Hai-Ren Wang Yong-Quan Xue Da-Zhi Yao Hong-Fei Zhang 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2026年第7期281-292,共12页
Asteroid light curves play a crucial role in asteroid science,providing valuable insights into the physical properties and internal structures of asteroids.However,traditional approaches to asteroid light curve analys... Asteroid light curves play a crucial role in asteroid science,providing valuable insights into the physical properties and internal structures of asteroids.However,traditional approaches to asteroid light curve analysis rely on high-cadence,dense photometric observations,which are fundamentally at odds with the sparse sampling strategies adopted by current large-scale sky surveys.This study aims to use sparse observations to fit light curves and preliminarily identify candidates for fast-rotating asteroids which are worthy of subsequent follow-up observations.We applied this approach to the Wide Field Survey Telescope(WFST)observations collected between 2024 June and 2025 March,and derived light curves for∼160 asteroids from∼3800,among which 18 were identified as fast-rotating candidates.Notably,four of these asteroids exhibit rotation periods shorter than 2.2 hr,the critical limit for structural stability.The number of objects requiring follow-up confirmation was reduced from∼3800 to 18,greatly improving the efficiency of the telescope.This work highlights the potential of sparse photometry in asteroid light curve analysis and establishes a novel route for efficiently identifying“timecritical”asteroids within large survey datasets,marking a paradigm shift from detailed studies of individual objects toward efficient screening of large samples. 展开更多
关键词 minor planets,asteroids:general methods:data analysis surveys
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GPS-Synchronized Monitoring of Core-Collapse Supernova Bursts with PandaX-4T via Coherent Elastic Neutrino-Nucleus Scattering 认领 引用
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作者 Binyu Pang Zihao Bo +109 位作者 Wei Chen Xun Chen Yunhua Chen Chen Cheng Xiangyi Cui Manna Deng Yingjie Fan Deqing Fang Xuanye Fu Zhixing Gao Yujie Ge Lisheng Geng Karl Giboni Xunan Guo Xuyuan Guo Zichao Guo Chencheng Han Ke Han Changda He Jinrong He Houqi Huang Junting Huang Yule Huang Ruquan Hou Xiangdong Ji Yonglin Ju Xiaorun Lan Chenxiang Li Jiafu Li Mingchuan Li Peiyuan Li Shuaijie Li Tao Li Yangdong Li Zhiyuan Li Qing Lin Jianglai Liu Yuanchun Liu Congcong Lu Xiaoying Lu Lingyin Luo Yunyang Luo Yugang Ma Yajun Mao Yue Meng Ningchun Qi Zhicheng Qian Xiangxiang Ren Dong Shan Xiaofeng Shang Xiyuan Shao Guofang Shen Manbin Shen Wenliang Sun Xuyan Sun Yi Tao Yueqiang Tian Yuxin Tian Anqing Wang Guanbo Wang Hao Wang Haoyu Wang Jiamin Wang Lei Wang Meng Wang Qiuhong Wang Shaobo Wang Shibo Wang Siguang Wang Wei Wang Xu Wang Zhou Wang Yuehuan Wei Weihao Wu Yuan Wu Mengjiao Xiao Xiang Xiao Kaizhi Xiong Jianqin Xu Yifan Xu Shunyu Yao Binbin Yan Xiyu Yan Yong Yang Peihua Ye Chunxu Yu Ying Yuan Zhe Yuan Youhui Yun Xinning Zeng Minzhen Zhang Peng Zhang Shibo Zhang Siyuan Zhang Shu Zhang Tao Zhang Wei Zhang Yang Zhang Yingxin Zhang Yuanyuan Zhang Li Zhao Kangkang Zhao Jifang Zhou Jiaxu Zhou Jiayi Zhou Ning Zhou Xiaopeng Zhou Zhizhen Zhou Chenhui Zhu PandaX Collaboration 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第2期367-373,共7页
The landmark detection of neutrinos from SN1987A marked the dawn of neutrino astrophysics.The neutrino burst provided essential insights into fundamental properties of neutrinos and served as key probes of stellar evo... The landmark detection of neutrinos from SN1987A marked the dawn of neutrino astrophysics.The neutrino burst provided essential insights into fundamental properties of neutrinos and served as key probes of stellar evolution and supernova dynamics.The recent advancement in coherent elastic neutrino-nucleus scattering enables the detection of core-collapse supernova burst neutrinos using tonne-scale liquid xenon detectors originally designed for dark matter direct detection.Leveraging this capability,we developed and deployed an online supernova monitoring system for the PandaX-4T experiment.This system features a GPS module with millisecond-level timing precision,a low false-alarm rate,and high sensitivity to galactic core-collapse supernova explosion events.The methodology is robust,directly scalable,and planned for implementation in the next-generation PandaX-20T experiment. 展开更多
关键词 dark matter direct detectionleveraging GPS synchronized monitoring neutrino astrophysics dark matter direct detection core collapse supernova supernova monitoring system PandAX t coherent elastic neutrino nucleus scattering
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Status and Prospect of Weak Radiative Hyperon Decays 认领 引用 被引量：1
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作者 Rui-Xiang Shi Zekun Jia +3 位作者 Li-Sheng Geng Haiping Peng Qiang Zhao Xiaorong Zhou 《Chinese Physics Letters》 SCIE EI CAS CSCD 2025年第3期44-51,共8页
Weak radiative hyperon decays represent a rich interplay between weak interactions and the internal structure of baryons,offering profound insights into Quantum Chromodynamics and weak interactions.Recent experimental... Weak radiative hyperon decays represent a rich interplay between weak interactions and the internal structure of baryons,offering profound insights into Quantum Chromodynamics and weak interactions.Recent experimental observations,particularly from BESIII,have revealed deviations from theoretical predictions.These deviations could signal new physics or the need for refined theoretical models incorporating intermediate resonance effects.This review discusses recent theoretical advancements and key experimental findings,focusing on recent measurements from BESIII and their implications for strong interactions and baryon structure. 展开更多
关键词 structure refined decay
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Correction:Positron annihilation study of defect formation and evolution in matrix graphite under He ion irradiation 认领 引用
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作者 Hong-Xia Xu Jian-Dang Liu +8 位作者 Bang-Jiao Ye Zi-Wen Pan Jun Lin Jin-Liang Song Jian-Qing Cao Chao Yan Ying-Ping Hao Jin-Xing Cheng Qing-Bo Wang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2025年第6期241-241,共1页
Correction:Nuclear Science and Techniques(2025)36:4 http://gffzzd3cc09b8251d45dfsu55u0kv55nfx6qu9.ffgz.tsg.suse.edu.cn/10.1007/s41365-024-01548-5 In this article,the caption for Fig(s)1,3,and 4 was inadvert-ently truncated.The incorrect and the corrected captions are ... Correction:Nuclear Science and Techniques(2025)36:4 http://gffzzd3cc09b8251d45dfsu55u0kv55nfx6qu9.ffgz.tsg.suse.edu.cn/10.1007/s41365-024-01548-5 In this article,the caption for Fig(s)1,3,and 4 was inadvert-ently truncated.The incorrect and the corrected captions are given below. 展开更多
关键词 defect formation evolution He ion irradiation positron annihilation matrix graphite
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Positron annihilation study of defect formation and evolution in matrix graphite under He ion irradiation 认领 引用
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作者 Hong-Xia Xu Jian-Dang Liu +8 位作者 Bang-Jiao Ye Zi-Wen Pan Jun Lin Jin-Liang Song Jian-Qing Cao Chao Yan Ying-Ping Hao Jin-Xing Cheng Qing-Bo Wang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2025年第1期13-21,共9页
The stability of matrix graphite under neutron irradiation and in corrosive environments is crucial for the safe operation of molten salt reactors(MSRs).Raman spectroscopy and a slow positron beam were employed to inv... The stability of matrix graphite under neutron irradiation and in corrosive environments is crucial for the safe operation of molten salt reactors(MSRs).Raman spectroscopy and a slow positron beam were employed to investigate the effects of He ion irradiation fluences and subsequent annealing on the microstructure and defects of the matrix graphite.He ions with 500 keV energy and fluences ranging from 1.1×1015ions∕cm2to 3.5×1017ions∕cm2were used to simulate neutron irradiation at 300 K.The samples with an irradiation fluence of 3.5×1016ions∕cm2were subjected to isochronal annealing at different temperatures(573 K,873 K and 1173 K)for 3 h.The Raman results revealed that the D peak gradually increased,whereas the intrinsic G peak decreased with increasing irradiation fluence.At the same irradiation fluence,the D peak gradually decreased,whereas the intrinsic G peak increased with increasing annealing temperature.Slow positron beam analysis demonstrated that the density or size of irradiation defects(vacancy type)increased with higher irradiation fluence,but decreased rapidly with increasing annealing temperature.The Raman spectral analysis of sample cross sections subjected to high irradiation fluences revealed the emergence of amorphization precisely at the depth where ion damage was most pronounced,whereas the surface retained its crystalline structure.Raman and positron annihilation analyses indicated that the matrix graphite exhibited good irradiation resistance to He ions at 300 K.However,vacancy-type defects induced by He ion irradiation exhibit poor thermal stability and can be easily removed during annealing. 展开更多
关键词 Graphite Positron annihilation Irradiation Raman spectrum
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Prototype of a deep-sea in-situ neutron activation spectrometer for polymetallic nodule and crust exploration 认领 引用
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作者 Xiao-Hu Wang Ping Cao +2 位作者 Bin Zhou Yuan-Da Wang Yu Zhu 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2025年第9期116-128,共13页
In-situ exploration of deep-sea seabed resources is a valuable research direction.Neutron activation-based in-situ exploration methods for seabed polymetallic nodules or crust resources are theoretically feasible beca... In-situ exploration of deep-sea seabed resources is a valuable research direction.Neutron activation-based in-situ exploration methods for seabed polymetallic nodules or crust resources are theoretically feasible because of the high content and high neutron capture cross-section of manganese in these nodules or crusts.However,to date,only a few relevant studies have been conducted.In this study,a prototype deep-sea in-situ neutron activation spectrometer(DINAS)was designed for resource exploration.Through an analysis of the principles of the spectrometer combined with Monte Carlo simulations of the physical principles and finite element simulations of deep-sea pressure,the structure and fundamental components of the spectrometer were determined.The inner core of the spectrometer comprised three components:a compact neutron generator for neutron production,gamma-ray detectors,and an electronics system.The gamma-ray detector array of the spectrometer consisted of LaBr3and Bi4Ge3O12scintillation crystals coupled with silicon photomultiplier arrays.The electronics system was divided into two modules to implement the SiPM readout and digital signal analysis along the modular design lines.The experimental activation of neutron beamlines at the China Spallation Neutron Source demonstrated the capability of the spectrometer detectors to detect activated gamma-rays and showed that the spectrometer achieved an energy resolution of 2.8%at 847 keV for the LaBr3detector and 6.7%at 2.113 MeV for the BGO detector.The laboratory model experiment tested the functionality of the spectrometer prototype,whereas the Geant4 simulation verified the reliability of the Monte Carlo method.The method and prototype proposed in this study proved feasible for the in-situ detection of polymetallic nodules or crusts in deep-sea environments. 展开更多
关键词 Gamma-ray detector Neutron activation Readout electronics
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Design of a LYSO crystal electromagnetic calorimeter for dark photon detection in the DarkSHINE experiment 认领 引用
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作者 Zhi-Yu Zhao Qi-Bin Liu +24 位作者 Ji-Yuan Chen Jing Chen Jun-Feng Chen Xiang Chen Chang-Bo Fu Jun Guo Kim Siang Khaw Liang Li Shu Li Dan-Ning Liu Kun Liu Si-Yuan Song Tong Sun Jian-Nan Tang Yu-Feng Wang Zhen Wang Wei-Hao Wu Hai-Jun Yang Yu-Ming Lin Rui Yuan Yu-Lei Zhang Yun-Long Zhang Bai-Hong Zhou Xu-Liang Zhu Yi-Fan Zhu 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2025年第3期69-84,共16页
This paper presents the design and optimization of a lutetium yttrium oxyorthosilicate(LYSO)crystal electromagnetic calorimeter(ECAL)for the DarkSHINE experiment,which aims to identify dark photons as potential mediat... This paper presents the design and optimization of a lutetium yttrium oxyorthosilicate(LYSO)crystal electromagnetic calorimeter(ECAL)for the DarkSHINE experiment,which aims to identify dark photons as potential mediators of dark forces.The ECAL design was evaluated through comprehensive simulations,focusing on optimizing dimensions,material selection,energy distribution,and energy resolution.The configuration consisted of 21×21×11 LYSO crystals,each measuring 2.5 cm×2.5 cm×4 cm,arranged in a staggered layout to enhance signal detection efficiency.A 4 GeV energy dynamic range was established to ensure accurate energy measurements without saturation,which is essential for background rejection and signal identification.A detailed digitization model was developed to simulate scintillation,silicon photomultiplier,and analog-to-digital converter behaviors,providing a realistic representation of the detector's performance.Additionally,the study assessed radiation damage in the ECAL region,emphasizing the importance of using radiation-resistant scintillators and silicon sensors. 展开更多
关键词 Electromagnetic calorimeter LYSO Scintillator detector Light dark matter Dark photon
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A Prototype of beam position and phase measurement electronics for the LINAC in ADS 认领 引用 被引量：2
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作者 HU Xiaofang ZHAO Lei +2 位作者 GAO Xingshun LIU Shubin AN Qi 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2013年第6期87-93,共7页
This article presents a prototype of beam position and phase measurement(BPPM)electronics designed for the LINAC in China Accelerator Driven Sub-critical system(ADS).The signals received from the Beam Position Monitor... This article presents a prototype of beam position and phase measurement(BPPM)electronics designed for the LINAC in China Accelerator Driven Sub-critical system(ADS).The signals received from the Beam Position Monitor(BPM)detectors are narrow pulses with a repetition frequency of 162.5 MHz and a dynamic range more than40 dB.Based on the high-speed high-resolution Analog-to-Digital conversion technique,the input RF signals are directly converted to In-phase and Quadrature-phase(IQ)streams through under-sampling,which simplifies both the analog and digital processing circuits.All signal processing is integrated in one single FPGA,in which real-time beam position,phase and current can be obtained.A series of simulations and tests have been conducted to evaluate the performance.Initial test results indicate that this prototype achieves a phase resolution better than 0.1 degree and a position resolution better than 20μm over a 40 dB dynamic range with the bandwidth of 780 kHz,which is well beyond the application requirements. 展开更多
关键词 电子直线加速器 位置检测器 相位测量 ADS 光束 原型 数字转换技术 数字处理电路
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Comparison of Proton Shower Developments in the BGO Calorimeter of the Dark Matter Particle Explorer between GEANT4 and FLUKA Simulations 认领 引用 被引量：2
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作者 Wei Jiang Chuan Yue +30 位作者 Ming-Yang Cui Xiang Li Qiang Yuan Francesca Alemanno Paolo Bernardini Giovanni Catanzani Zhan-Fang Chen Ivan De Mitri Tie-Kuang Dong Giacinto Donvito David Francois Droz Piergiorgio Fusco Fabio Gargano Dong-Ya Guo Dimitrios Kyratzis Shi-Jun Lei Yang Liu Francesco Loparco Peng-Xiong Ma Giovanni Marsella Mario Nicola Mazziotta Xu Pan Wen-Xi Peng Antonio Surdo Andrii Tykhonov Yi-Yeng Wei Yu-Hong Yu Jing-Jing Zang Ya-Peng Zhang Yong-Jie Zhang Yun-Long Zhang 《Chinese Physics Letters》 SCIE EI CAS CSCD 2020年第11期114-120,共7页
The DArk Matter Particle Explorer(DAMPE)is a satellite-borne detector for high-energy cosmic rays and y-rays.To fully understand the detector performance and obtain reliable physical results,extensive simulations of t... The DArk Matter Particle Explorer(DAMPE)is a satellite-borne detector for high-energy cosmic rays and y-rays.To fully understand the detector performance and obtain reliable physical results,extensive simulations of the detector are necessary.The simulations are particularly important for the data analysis of cosmic ray nuclei,which relies closely on the hadronic and nuclear interactions of particles in the detector material.Widely adopted simulation softwares include the GEANT4 and FLUKA,both of which have been implemented for the DAMPE simulation tool.Here we describe the simulation tool of DAMPE and compare the results of proton shower properties in the calorimeter from the two simulation softwares.Such a comparison gives an estimate of the most significant uncertainties of our proton spectral analysis. 展开更多
关键词 material. GEANT4 calorimeter
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Studies of track finding for long-lived particles at the Super Tau-Charm Facility 认领 引用
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作者 Hao Li Hang Zhou +3 位作者 Jin Zhang Xing-Tao Huang Jie Yang Xiao-Cong Ai 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2025年第9期175-186,共12页
Reconstructing the trajectories of charged particles in high-energy physics experiments is a complex task,particularly for long-lived particles.At the future Super Tau-Charm Facility(STCF),such particles are expected ... Reconstructing the trajectories of charged particles in high-energy physics experiments is a complex task,particularly for long-lived particles.At the future Super Tau-Charm Facility(STCF),such particles are expected to appear in several key benchmark physics processes.A Common Tracking Software was used to reconstruct the trajectories of long-lived particles,revealing that the track-finding performance of the widely used combinatorial Kalman filter is limited by its seeding algorithm.This limitation can be mitigated by guiding the combinatorial Kalman filter using initial tracks provided by the Hough transform.The track-finding performance of the combined Hough transform and combinatorial Kalman filter was evaluated using the process J∕ψ→Λ(→pπ−)Λ(→pπ+)at STCF. 展开更多
关键词 Track finding A Common Tracking Software Hough transform Long-lived particles
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Geant4 simulation of multi-sphere spectrometer response function and the detection of 241Am–Be neutron spectrum 认领 引用 被引量：3
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作者 Xiao-Fei Jiang Jing Cao +1 位作者 Chun-Yu Jiang Ze-Jie Yin 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2017年第12期204-208,共5页
This paper is aimed at detecting the neutron spectrum of241Am–Be, a widely used neutron source, with the SP9 ~3He proportional counter, which is a multi-sphere spectrometer system of eight thermal neutron detector... This paper is aimed at detecting the neutron spectrum of241Am–Be, a widely used neutron source, with the SP9 ~3He proportional counter, which is a multi-sphere spectrometer system of eight thermal neutron detectors embedded in eight polyethylene(PE) spheres of varying diameters. The transport processes of a neutron in the multi-sphere spectrometer are simulated using the Geant4 code. Two sets of response functions of the PE spheres are obtained for calculating the241Am–Be neutron spectrum.Response Function 1 utilizes the thermal neutron scattering model G4 Neutron HPThermal Scattering for neutron energies of ≤4 eV, and Response Function 2 has no thermal treatment. Neutron spectra of an241Am–Be neutron source are measured and compared to those calculated by using the response functions. The results show that response function with thermal treatment is more accurate and closer to the real spectrum. 展开更多
关键词 Response function Neutron energy spectrum Multi-sphere Geant4 241Am–Be G4NeutronHPThermalScattering
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Effect of Au/Ni/4H–SiC Schottky junction thermal stability on performance of alpha particle detection 认领 引用 被引量：2
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作者 Xin Ye Xiao-Chuan Xia +5 位作者 Hong-Wei Liang Zhuo Li He-Qiu Zhang Guo-Tong Du Xing-Zhu Cui Xiao-Hua Liang 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第8期482-486,共5页
Au/Ni-type 4H-SiC Schottky alpha particle detectors are fabricated and annealed at temperatures between 400℃ and 700 ℃ to investigate the effects of thermal stability of the Schottky contact on the structural and el... Au/Ni-type 4H-SiC Schottky alpha particle detectors are fabricated and annealed at temperatures between 400℃ and 700 ℃ to investigate the effects of thermal stability of the Schottky contact on the structural and electrical properties of the detectors. At the annealing temperature of 500 ℃, the two nickel silicides （i.e., Ni31Sil2 and Ni2Si） are formed at the interface and result in the formation of an inhomogeneous Schottky barrier. By increasing the annealing temperature, the Ni31Sil2 transforms into the more stable Ni2Si. The structural evolution of the Schottky contact directly affects the electrical properties and alpha particle energy resolutions of the detectors. A better energy resolution of 2.60% is obtained for 5.48-MeV alpha particles with the detector after being annealed at 600 ℃. As a result, the Au/Ni-type 4H-SiC Schottky detector shows a good performance after thermal treatment at temperatures up to 700℃. 展开更多
关键词 alpha particle detector silicon carbide thermal stability Schottky barrier
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A low-background beta detection system using a time projection chamber 认领 引用
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作者 Rui-Yang Zhang Zhi-Yong Zhang +7 位作者 Zeng-Xuan Huang Yong Zhou Jian-Bei Liu Song-Song Tang Yuan-Fei Cheng Chang-Qing Feng Ming Shao Yi Zhou 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第6期78-91,共14页
In this study,we present a time projection chamber(TPC)system for low-background beta radiation measurements.The system consists of a TPC with a two-dimensional strip readout Micromegas and an anti-coincidence detecto... In this study,we present a time projection chamber(TPC)system for low-background beta radiation measurements.The system consists of a TPC with a two-dimensional strip readout Micromegas and an anti-coincidence detector with readout pads for cosmic ray vetoing.The detector system uses an AGET-based waveform sampling system for data acquisition.The beta detection capability of the system was verified through an experimental test using90Sr beta source.In addition,a dedicated simulation program based on Geant4 was developed to model the entire detection process,including the responses to both the beta source and background radiation.The simulation results were compared with the experimental data for both beta and background samples,and they were in good agreement.Simulation samples were used to optimize and train the classification models for beta and background discrimination.By applying the selected model into test data,the system achieved a background rate of 0.49 cpm/cm2while retaining more than 55%of90Sr beta signals within a 7 cm diameter detection region.Further analysis revealed that approximately 70%of the background originated from environmental gamma radiation,while the remaining contribution mainly originated from the intrinsic radioactivity of the detector materials,particularly the FR-4-based field cage and readout plane.Based on the knowledge gained from the experiments and simulations,an optimization of the TPC system was proposed,with the simulation predicting a potential reduction in the background rate to 0.0012 cpm/cm2. 展开更多
关键词 Gaseous detector Time projection chamber Micromegas Low-background beta detection Detector modeling and simulations Data processing methods
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Asteroseismology Study of a New Faint ZZ Ceti J053009.62+594557.0 Discovered in WFST 认领 引用
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作者 Yonghui Yang Jincheng Guo +16 位作者 Jie Lin Tinggui Wang Ning Jiang Yibo Wang Lulu Fan Min Fang Bin Li Feng Li Hao Liu Ming Liang Wentao Luo Jinlong Tang Hairen Wang Jian Wang Yongquan Xue Dazhi Yao Hongfei Zhang 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2026年第4期104-115,共12页
In this work,we present a detailed asteroseismological analysis of Wide Field Survey Telescope(WFST)J053009.62+594557.0,a newly discovered faint pulsating white dwarf by the WFST with a Gaia G magnitude of 19.13.Analy... In this work,we present a detailed asteroseismological analysis of Wide Field Survey Telescope(WFST)J053009.62+594557.0,a newly discovered faint pulsating white dwarf by the WFST with a Gaia G magnitude of 19.13.Analysis of two nights of high-precision WFST g-band photometry reveals three significant pulsation frequencies with high signal-to-noise ratios.Follow-up P200/DBSP spectroscopy classifies the object as a DA white dwarf with Teff=11,609±605 K and M=0.63±0.22M⊙.To probe its internal structure,we construct asteroseismological models with the White Dwarf Evolution Code(WDEC).After exploring sufficient matching models,best-fitting solutions yield Teff=11,850±10 K and M=0.600±0.005M⊙,consistent with independent constraints from Gaia color-magnitude diagram,Gaia XP spectrum,P200 spectral fitting,SED fitting,and Gaia parallax.It is shown that the asteroseismological distance agrees with the Gaia parallax to 1.45%. 展开更多
关键词 stars individual(WFST J053009.62+594557.0)-stars oscillations(including pulsations)-stars variables general-(stars )white dwarfs-asteroseismology
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WFST Supernovae in the First Year.I.Statistical Study of 16 Early-phase Type Ia Supernovae from the Pilot Survey 认领 引用
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作者 Weiyu Wu Ji-an Jiang +27 位作者 Zelin Xu Dezheng Meng Keiichi Maeda Hanindyo Kuncarayakti Lluís Galbany Saurabh W.Jha Željko Ivezić Peter Yoachim Zhengyan Liu Junhan Zhao Tinggui Wang Xu Kong Andrew J.Connolly Ziqing Jia Lei Hu Lulu Fan Ning Jiang Feng Li Ming Liang Jinlong Tang Zhen Wan Hairen Wang Jian Wang Yongquan Xue Hongfei Zhang Wen Zhao Xianzhong Zheng Qingfeng Zhu 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2026年第6期251-266,共16页
In this paper,we present 16 early-phase type Ia supernovae(SNe Ia)discovered during the pilot survey of the 2.5 mr Wide Field Survey Telescope(WFST-PS)from 2024 March 4 to July 10 including three SNe Ia with early-exc... In this paper,we present 16 early-phase type Ia supernovae(SNe Ia)discovered during the pilot survey of the 2.5 mr Wide Field Survey Telescope(WFST-PS)from 2024 March 4 to July 10 including three SNe Ia with early-excess emission features(EEx SNe Ia).The discovery magnitude of the 16 WFST-PS early-phase SNe is at least 3 mag fainter than their peak brightness.A large scatter of color indices is found in approximately the first 10 days of supernova explosions,indicating diverse photometric behaviors in the early phase.Three EEx SNe Ia show relatively brighter peak luminosities and longer rise time compared to those of non-EEx SNe Ia.The results indicate that current theoretical models require further refinement to fully capture the early photometric evolution of SNe Ia.Based on the initial highcadence ugr-band data from the WFST-PS survey,we emphasize that early near-ultraviolet(NUV)observations are indispensable for placing tight constraints on the explosion mechanisms and progenitor systems of SNe Ia. 展开更多
关键词 (stars:)supernovae:general surveys methods:statistical methods:observational techniques:photometric (stars:)white dwarfs
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Conceptual design of the muonium-to-antimuonium conversion experiment(MACE) 认领 引用
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作者 Ai-Yu Bai Han-Jie Cai +49 位作者 Chang-Lin Chen Si-Yuan Chen Xu-Rong Chen Yu Chen Wei-Bin Cheng Ling-Yun Dai Rui-Rui Fan Li Gong Zi-Hao Guo Yuan He Zhi-Long Hou Yin-Yuan Huang Huan Jia Hao Jiang Han-Tao Jing Xiao-Shen Kang Hai-Bo Li Jin-Cheng Li Yang Li Da-Ming Liu Shu-Lin Liu Gui-Hao Lu Han Miao Yun-Song Ning Jian-Wei Niu Hua-Xing Peng Alexey APetrov Yuan-Shuai Qin Ming-Chen Sun Jian Tang Jing-Yu Tang Ye Tian Rong Wang Xiao-Dong Wang Yi Wang Zhi-Chao Wang Chen Wu Tian-Yu Xing Wei-Zhi Xiong Yu Xu Bao-Jun Yan De-Liang Yao Tao Yu Ye Yuan Yi Yuan Yao Zhang Yongchao Zhang Zhi-Lv Zhang Guang Zhao Shi-Han Zhao 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第4期139-187,共49页
The spontaneous conversion of muonium to antimuonium is an interesting charged lepton flavor violation phenomenon that offers a sensitive probe for potential new physics and serves as a tool to constrain the parameter... The spontaneous conversion of muonium to antimuonium is an interesting charged lepton flavor violation phenomenon that offers a sensitive probe for potential new physics and serves as a tool to constrain the parameter space beyond the Standard Model.The Muonium-to-Antimuonium Conversion Experiment(MACE)was designed to utilize a high-intensity muon beam,a Michel electron magnetic spectrometer,a positron transport system,and a positron detection system to either discover or constrain this rare process with a conversion probability of O(10-13).This article presents an overview of the theoretical framework and a detailed description of the experimental design for muonium-to-antimuonium conversion. 展开更多
关键词 Muonium Lepton flavor violation Muon beam Drift chamber Microchannel plate Electromagnetic calorimeter
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A 16-Channel high-resolution time and charge measurement module for the external target experiment in the CSR of HIRFL 认领 引用 被引量：14
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作者 赵雷 康龙飞 +2 位作者 周家稳 刘树彬 安琪 《Nuclear Science and Techniques》 SCIE CAS CSCD 2014年第1期27-32,共6页
High precision time measurement is required in the readout of the neutron wall and TOF walls in the external target experiment of the Cooling Storage Ring(CSR) project in the Heavy Ion Research Facility in Lanzhou(HIR... High precision time measurement is required in the readout of the neutron wall and TOF walls in the external target experiment of the Cooling Storage Ring(CSR) project in the Heavy Ion Research Facility in Lanzhou(HIRFL).Considering the time walk correction,both time and charge are measured in the readout electronics.In this 16-channel measurement module,time and charge information are digitized by TDCs at the same time based on the Time-Over-Threshold(TOT) method;meanwhile,by employing high-density ASIC chips,the electronics complexity is effectively reduced.Test results indicate that this module achieves a time resolution better than 25 ps and a charge resolution better than 5%over the input amplitude range from 50 mV to 3V. 展开更多
关键词 时间测量 HIRFL 电荷测量 测量模块 企业社会责任 高解析度 16通道 实验
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Advances in nuclear detection and readout techniques 认领 引用 被引量：48
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作者 Rui He Xiao‑Yang Niu +48 位作者 Yi Wang Hong‑Wei Liang Hong‑Bang Liu Ye Tian Hong‑Lin Zhang Chao‑Jie Zou Zhi‑Yi Liu Yun‑Long Zhang Hai‑Bo Yang Ju Huang Hong‑Kai Wang Wei‑Jia Han Bei Cao Gang Chen Cong Dai Li‑Min Duan Rui‑Rui Fan Fang‑Fa Fu Jian‑Hua Guo Dong Han Wei Jiang Xian‑Qin Li Xin Li Zhuo‑Dai Li Yu‑Tie Liang Shun Liao De‑Xu Lin Cheng‑Ming Liu Guo‑Rui Liu Jun‑Tao Liu Ze Long Meng‑Chen Niu Hao Qiu Hu Ran Xiang‑Ming Sun Bo‑Tan Wang Jia Wang Jin‑Xiang Wang Qi‑Lin Wang Yong‑Sheng Wang Xiao‑Chuan Xia Hao‑Qing Xie He‑Run Yang Hong Yin Hong Yuan Chun‑Hui Zhang Rui‑Guang Zhao Ran Zheng Cheng‑Xin Zhao 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2023年第12期281-358,共78页
“A Craftsman Must Sharpen His Tools to Do His Job,”said Confucius.Nuclear detection and readout techniques are the foundation of particle physics,nuclear physics,and particle astrophysics to reveal the nature of the... “A Craftsman Must Sharpen His Tools to Do His Job,”said Confucius.Nuclear detection and readout techniques are the foundation of particle physics,nuclear physics,and particle astrophysics to reveal the nature of the universe.Also,they are being increasingly used in other disciplines like nuclear power generation,life sciences,environmental sciences,medical sciences,etc.The article reviews the short history,recent development,and trend of nuclear detection and readout techniques,covering Semiconductor Detector,Gaseous Detector,Scintillation Detector,Cherenkov Detector,Transition Radiation Detector,and Readout Techniques.By explaining the principle and using examples,we hope to help the interested reader underst and this research field and bring exciting information to the community. 展开更多
关键词 Silicon detector Wide bandgap detector Time projection chamber(TPC) Multigap resistive plate chamber detector(MRPC) Scintillation detector Calorimeters Cherenkov detector Transition radiation detector Artificial intelligence Trigger-less readout
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An experimental review of open heavy flavor and quarkonium production at RHIC 认领 引用 被引量：16
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作者 Ze-Bo Tang Wang-Mei Zha Yi-Fei Zhang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2020年第8期72-103,共32页
Open heavy flavors and quarkonia are unique probes of the hot–dense medium produced in heavy-ion collisions. Their production in p+p collisions also constitutes an important test of QCD. In this paper, we review sele... Open heavy flavors and quarkonia are unique probes of the hot–dense medium produced in heavy-ion collisions. Their production in p+p collisions also constitutes an important test of QCD. In this paper, we review selected results on the open heavy flavors and quarkonia generated in the p+p and heavy-ion collisions at the Relativistic Heavy Ion Collider. The physical implications are also discussed. 展开更多
关键词 Heavy flavor Heavy quark Quarkonium Quark–gluon plasma Heavy-ion collisions QCD
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Readout electronics of a prototype spectrometer for measuring low-energy ions in solar wind plasma 认领 引用 被引量：6
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作者 Di Yang Zhe Cao +4 位作者 Xi Qin Xin-Jun Hao Shu-Bin Liu Chang-Qing Feng Qi An 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2016年第6期130-136,共7页
Readout electronics is developed for a prototype spectrometer for in situ measurement of low-energy ions of30 e V/e–20 ke V/e in the solar wind plasma.A low-noise preamplifier/discriminator(A111F) is employed for eac... Readout electronics is developed for a prototype spectrometer for in situ measurement of low-energy ions of30 e V/e–20 ke V/e in the solar wind plasma.A low-noise preamplifier/discriminator(A111F) is employed for each channel to process the signal from micro-channel plate(MCP) detectors.A high-voltage(HV) supply solution based on a HV module and a HV optocoupler is adopted to generate a fast sweeping HV and a fixed HV.Due to limitation of telemetry bandwidth in space communication,an algorithm is implemented in an FPGA(field programmable gate array) to compress the raw data.Test results show that the electronics achieves a 1 MHz event rate and a large input dynamic range of 95 p C.A slew rate of 0.8 V/ls and an integral nonlinearity of 0.7-LSB for the sweeping HV,and a precision of less than 0.8 % for the fixed HV are obtained.A vacuum beam test shows an energy resolution of 12 ± 0.7 % full width at half maximum(FWHM) is achieved,and noise counts are less than10/sec,indicating that the performance meets the physical requirement. 展开更多
关键词 低能离子 等离子体 原位测量 电子学 光谱仪 太阳风 读出 原型
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