用蒙特卡罗模拟方法计算EAS阵列的有效探测面积

计算物理 ›› 1993, Vol. 10 ›› Issue (4): 517-522.

用蒙特卡罗模拟方法计算EAS阵列的有效探测面积

张许生

云南大学物理系, 昆明 650091

收稿日期:1992-06-08 修回日期:1993-03-05 出版日期:1993-12-25 发布日期:1993-12-25

MONTE-CARLO SIMULATION ON THE ACCEPTANCE OF AN AIR SHOWER ARRAY

Zhang Xusheng

Department of Physics, Yunnan University, Kunming 650091

Received:1992-06-08 Revised:1993-03-05 Online:1993-12-25 Published:1993-12-25

摘要/Abstract

摘要： 本文从EAS横向分布的经验公式NKG结构函数及将平均值由NKG函数给定的Poisson分布用来对探测器实际测量到的粒子数密度进行随机抽样出发,利用蒙特卡罗模拟方法计算了梁王山宇宙线观测站粒子阵列的有效探测面积A_eff。由A_eff算出的EAS阵列的响应函数与实验观测结果相符合。将本文所得结果用于梁王山宇宙线测站的实验数据的分析,效果良好。

关键词: 广延空气簇射(EAS), EAS阵列有效探测面积, 响应函数, 蒙特卡罗模拟方法(MC)

Abstract: By assuming that (1)the lateral structure of an air shower follows the NKG function and (2)the Poisson distribution can be used to select real detective particle density for each particle density detector, in which the mean value is determined by NKG function (i.e.(1)),and making use of Monte-Carlo method, the effective area (i.e.acceptance) for the air shower array of Mt. Liang Wang Cosmic ray observation station is simulated numerically. The calculated response function from simulation values of effective area agrees well with the observed results of the EAS array experiment, and it is good to use simulation values of effective area to analyse experimental data of the EAS array. This fact confirms that the simple method of calculating effective area is proper and appicable.

Key words: extensive air shower(EAS), effective area of EAS array, response function, monte-carlo method

张许生. 用蒙特卡罗模拟方法计算EAS阵列的有效探测面积[J]. 计算物理, 1993, 10(4): 517-522.

Zhang Xusheng. MONTE-CARLO SIMULATION ON THE ACCEPTANCE OF AN AIR SHOWER ARRAY[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 1993, 10(4): 517-522.