怀柔EAS阵列的Monte　Carlo研究  

Monte-Carlo Investigation on the Performance of Huairou EAS Array

作　　者：罗光宣[1] 谭有恒[1] 张春生[1] 董玉琚 袁澎[1] 张慧敏[1] 王辉[1] 袁余奎[1] 力京[1] 

机构地区：[1]中国科学院高能物理研究所

出　　处：《高能物理与核物理》1995年第10期884-890,共7页High Energy Physics and Nuclear Physics

摘　　要：用ＧＥＮＡＳ程序包为怀柔阵列产生了３６万ＭｏｎｔｅＣａｒｌｏ模拟ＥＡＳ事例，用它们研究了怀柔阵列的性能，确定了最佳的事例判造条件，对实验数据进行了正确性检验，得到了怀柔ＥＡＳＳｉｚｅ（即簇射在观测面的总荷电粒子数）与初级宇宙线能量之间的转换关系．这项研究表明，怀柔阵列的ＥＡＳ心位和方向测定精度分别好于３ｍ和２．５°；ＥＡＳＳｉｚｅ测定误差典型值约８％；近垂直簇射的Ｓｉｚｅ（Ｎ）与初能（Ｅ）的关系为Ｅ≈１０１０．６４Ｎ０．８４．thousands of Monte-Carlo EAS events have been simulated by using the 'GENAS' package as well as the geometry and instrument response of Huairou EAS array.They are used for the investigation of array perfromance and event selection criteria,and for the check of experimental data.It shows that there are fair coincidence between the experimental and the simulated results on the trigger rate, the zenith angle distribution, the Size response etc.The accuracies of core position and arrival direction are about 3m and 2.5°, respectively.The relative error of EAS Size determination is about 8% when the Size is about 106,the peak value of energy response of array is 5 × 1014ev and the best fit of the relation between EAS Size and primary energy is E≈ 1010.64N0.84.

关 键 词：广延大气簇射 阵列 初能 蒙特卡洛研究 

分 类 号：O572.11[理学—粒子物理与原子核物理]