A program for the analytic simulation of extensive air showers

Abstract Title of program: CASCADE Catalogue number: AAYF Program obtainable from: CPC Program Library, Queen's University of Belfast, N. Ireland (see application form in this issue). Computer: CDC 6600; Installation: Terminal at University of Sydney Operating system: Scope Programming language used: FORTRAN IV High speed storage required: 28K words No. of bits in a word: 60 Overlay structure: None No. of magnetic tapes required: None Other peripherals used: Card reader, line printer No. of cards in c... Title of program: CASCADE Catalogue Id: AAYF_v1_0 Nature of problem Air shower simulations allow one to compare the predictions of various models with experimental results of extensive air shower (EAS) arrays. Direct Monte Carlo methods are not practical, in terms of computing time, for the ultra-high primary energy(approx10*20eV) and low thresholds(approx 1GeV)now detectable. An analytic method is therefore used to predict the mean values of observables such as hadron energy spectra, muon shower size and electron shower size. Versions of this program held in the CPC repository in Mendeley Data AAYF_v1_0; CASCADE; 10.1016/0010-4655(74)90032-0 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

程序摘要标题：CASCADE
目录编号：AAYF
程序获取途径：北爱尔兰贝尔法斯特女王大学CPC程序库（详见本期申请表）。
适用计算机：CDC 6600；安装环境：悉尼大学终端
操作系统：Scope
所用编程语言：FORTRAN IV
所需高速存储空间：28K字
字长：60位
无覆盖结构
无需磁带驱动器
其他外设需求：卡片阅读器、行式打印机
输入卡片数……
程序标题：CASCADE
目录ID：AAYF_v1_0
问题本质：大气簇射模拟可用于对比各类物理模型的预测结果与广延大气簇射（Extensive Air Shower, EAS）阵列的实验观测结果。针对当前可探测的超高原初能量（约10²⁰eV）及低探测阈值（约1GeV）场景，直接蒙特卡洛方法在计算耗时上并不具备实用性。因此本程序采用解析方法，对强子能谱、μ子簇射规模、电子簇射规模等可观测量的均值进行预测。
Mendeley Data收录的CPC程序库中本程序的版本包括：AAYF_v1_0、CASCADE；文献DOI：10.1016/0010-4655(74)90032-0
本程序源自贝尔法斯特女王大学馆藏的CPC程序库（1969-2019）