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
中国锦屏地下实验室是目前世界上岩石覆盖最深的深地实验室,对宇宙线μ子具有良好的屏蔽作用,具有极低的宇宙线通量,因此适用于开展对稀有物理事例的探测实验。目前,包括中国暗物质实验(China Dark matter EXperiment,CDEX)、粒子和天...中国锦屏地下实验室是目前世界上岩石覆盖最深的深地实验室,对宇宙线μ子具有良好的屏蔽作用,具有极低的宇宙线通量,因此适用于开展对稀有物理事例的探测实验。目前,包括中国暗物质实验(China Dark matter EXperiment,CDEX)、粒子和天体物理氙实验(Particle and Astrophysical Xenon Experiments,PandaX)、锦屏深地核天体物理实验装置(Jinping Underground Nuclear Astrophysics Experiment,JUNA)等实验组已经入驻锦屏实验室,对暗物质直接探测、无中微子双β衰变、天体核反应等一系列稀有物理事例进行实验探测,并给出了一系列国际先进水平的研究成果。本文总结了中国锦屏地下实验室自成立以来的发展过程和本底控制情况,并对实验室中各个实验组所开展实验的物理意义、实验原理、关键技术、物理成果等进行介绍,同时给出实验组接下来的实验计划。展开更多
基金supported in part by the National Key R&D Program of China(Grant Nos.2023YFA1606200 and 2023YFA1606203)the National Natural Science Foundation of China(Grant Nos.12090060,12090063,U23B2070,and 12175139)+8 种基金the Office of Science and TechnologyShanghai Municipal Government(Grant Nos.21TQ1400218,22JC1410100,23JC1410200,and ZJ2023-ZD-003)the Discipline Construction Fund of Shandong Universitythe Fundamental Research Funds for the Central Universitiesthe sponsorship from the Chinese Academy of Sciences Center for Excellence in Particle Physics(CCEPP)Thomas and Linda Lau Family FoundationNew Cornerstone Science FoundationTencent Foundation in ChinaYangyang Development Fund。
文摘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.
