追踪宇宙“信使” 冲击世纪谜题——高海拔宇宙线观测站简介  

Tracking the "Messenger" of the universe, challenging puzzle of the century: A brief introduction to the Large High Altitude Air Shower Observatory

作　　者：查敏[1] 陈松战[1] 吴含荣[1] 马玲玲[1] 马欣华[1] 胡红波[1] ZHA Min;CHEN Songzhan;WU Hanrong;MA Lingling;MA Xinhua;HU Hongbo(Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院高能物理研究所

出　　处：《科技导报》2019年第21期32-45,共14页Science & Technology Review

基　　金：国家自然科学基金面上项目(11675187,11575203);国家自然科学基金天文联合基金项目(U1731136);国家自然科学基金青年科学基金项目(11505190);国家自然科学基金重点项目(11635011);中国科学院国际合作局对外合作重点项目(113111KYSB20170055)

摘　　要：宇宙线的研究具有悠久的历史,取得了许多划时代的发现性成果。但是人类对宇宙线的起源、加速和传播等问题仍存在诸多疑惑。大型高海拔空气簇射观测站(LHAASO)独具高海拔和大规模优势,计划利用多种探测手段开展联合观测,大幅提升对伽马和宇宙线粒子的鉴别能力。LHAASO有望获得史上最高的伽玛探测灵敏度,并在很宽的能量范围内精确测量宇宙线能谱,为宇宙线物理、高能天体物理、宇宙学和新物理学规律研究做出贡献。介绍了LHAASO的探测器结构、性能优势和科学目标。A lot of epoch-making discoveries have been revealed by the century long study of cosmic rays. However, issues related to the origin, acceleration and propagation of cosmic rays remain to be mysterious. The large high altitude air shower observatory(LHAASO) is a unique experiment having both advantages of high altitude and large effective area. Besides,LHAASO will greatly improve the discrimination power between gamma ray and cosmic rays by using the hybrid detector technology. LHAASO is expected to obtain unprecedented gamma ray detection sensitivity and to make very precise measurement in cosmic ray spectrum in a very wide energy range. LHAASO will make important contribution to understanding fundamental problem of cosmic ray, to the research in high-energy astrophysics, cosmology and the exploration of new physics. This paper briefly describes the concept and structure of LHAASO detectors, the advanced performance, and scientific goal of LHAASO.

关 键 词：宇宙线 伽马射线 高海拔空气簇射观测站 

分 类 号：O57[理学—粒子物理与原子核物理]