空气簇射轴芯探测器的计算机模拟和实验开发  

Computer Simulation and Experimental Development of An Air Shower Core Detector

作　　者：杨振[1] 张颖[1] 邵静[1,2] 翟留名[1] 李万杰[1,3] 黄晶[1] 

机构地区：[1]中国科学院高能物理研究所,北京100049 [2]山东大学,山东济南250100 [3]西南交通大学,四川成都610031

出　　处：《核电子学与探测技术》2011年第7期816-822,共7页Nuclear Electronics & Detection Technology

基　　金：中国科学院(H9291450S3);中科院高能物理研究所(H95451D0U2;H8515530U1);国家自然科学基金委的天文联合基金(Y0293900TF)联合支持

摘　　要：为了验证10 TeV及以上能区朝前区强子作用模型,我们完成了详细的计算机蒙特卡洛模拟。在计算机蒙卡模拟的基础上,我们设计并开发了空气簇射轴芯探测器(Yangbajing Air shower Core array,YAC),并使其与西藏羊八井ASgamma实验的外围广延大气簇射阵列(Tibet-Ⅲ)成功地联合运行。根据计算机模拟的结果显示,这样的YAC探测器共124台,摆成格子状结构,中间10×10阵列,外围24台,经过3年,我们可观测到10 TeV以上,满足我们要求的高能轴芯事例为5.6×107例。利用(Tibet-Ⅲ+YAC)的联合实验,可记录10 TeV及以上能区的宇宙线空气簇射高能轴芯区所包含的100 GeV以上的电子和光子,测量其数目、横向分布等信息。由于该能区原初宇宙线的成分和能谱已有直接观测的结果,因此,根据YAC观测到的上述参量与计算机模拟结果的比较,我们可以对现有的强子作用模型进行验证。In order to check the hadronic interaction models in the forward region at primary energies of above 10 TeV,a detailed computer simulation and an experimental development of the Yangbajing Air shower Core detector array（YAC） is described.YAC,consisting of 124 detectors for which 100 are arranged into 10×10 grid and 24 are surrounded,will be operated together with the Tibet-ASgamma Extensive Air Shower array（Tibet-Ⅲ）.By using the hybrid experiment（Tibet-Ⅲ＋YAC）,the high energy electromagnetic particles in the core region of air showers with primary energies higher than 10 TeV can be recorded.Their number distribution,their energy distribution,their lateral spread distribution and other information,together with the primary energy estimated by the accompanied air shower event recorded by the Tibet-Ⅲ array,can provide important information in checking the interaction models in the corresponding energy region.A sufficient big data sample of about 5.6×107 high energy core events in three years observation are expected by the hybrid experiment.

关 键 词：朝前区 强子作用模型 宇宙线 空气簇射 

分 类 号：O572.13[理学—粒子物理与原子核物理]