A GEANT extension for polarized neutron-proton scattering

Abstract An extension to the GEANT software package is presented, which introduces spin for elastic n-p scattering in the 1–500 MeV energy range. With this extension, the asymmetry due to the analyzing power of the mentioned interaction can be simulated, and is applied in the optimization of the figure-of-merit of a neutron polarimeter. Title of program: SAIDINTF Catalogue Id: ACLS_v1_0 Nature of problem The GEANT package has proven to be very useful in simulating the behaviour of a neutron polarimeter. However, GEANT lacks the treatment of polarization in elastic nucleon-nucleon scattering channels. Therefore, polarization was introduced for elastic neutron-proton scattering processes which are treated within the core of the GEANT hadronic interaction software. Versions of this program held in the CPC repository in Mendeley Data ACLS_v1_0; SAIDINTF; 10.1016/0010-4655(93)90020-D This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)摘要 本文提出了GEANT软件包的扩展程序，可在1~500兆电子伏特（MeV）能区为弹性中子-质子（n-p）散射引入自旋相关处理。借助该扩展程序，可模拟由上述相互作用的分析功率所引发的偏振不对称性，并将其应用于中子偏振计（neutron polarimeter）品质因数的优化。 程序名称：SAIDINTF 目录编号：ACLS_v1_0 问题本质 GEANT软件包在模拟中子偏振计的运行行为方面已被证实极具实用价值，但该软件包缺少弹性核子-核子散射通道的偏振处理机制。因此，本扩展程序在GEANT强相互作用软件核心中，为弹性中子-质子散射过程加入了偏振处理模块。 门德列耶数据（Mendeley Data）库中的计算机物理通信（Computer Physics Communications，简称CPC）程序库收录的本程序版本：ACLS_v1_0；SAIDINTF；10.1016/0010-4655(93)90020-D 本程序源自贝尔法斯特女王大学托管的CPC程序库（1969-2019年）