双极型磁选态单束铯束管内铯原子运动轨迹的算法改进  

Algorithmic Improvement about Motion Trajectory of Cesium Atom in Bipolar Magnetic State-Selecting Cesium Single Beam Tube

作　　者：朱宏伟[1] 陈江[1] 张涤新[1] 王骥[1] 袁博[1] 

机构地区：[1]兰州物理研究所,兰州730000

出　　处：《宇航学报》2010年第9期2189-2194,共6页Journal of Astronautics

基　　金：国家高技术研究发展计划(863计划)(2007AA12Z303)

摘　　要：针对简化算法得到的铯原子运动轨迹精度不高的结果,通过分析磁选态单束铯束管内双极型选态磁铁的磁场分布,提出了不简化磁场梯度和有效磁矩,用布利厄施-施多厄方法求解铯原子运动方程的算法。用此算法得到的铯原子运动轨迹与通常采用的简化算法得到的轨迹相比,最大差异约为1.0mm。此计算结果影响管内机械组件的安装对中位置,可用于束光学模拟计算,提高短期稳定度指标。An algorithm for calculating trajectory of cesium atom is proposed in this paper for imprecise trajectory attained by a simplification algorithm.The magnetic field distribution of bipolar state-selecting magnet in magnetic state-selecting cesium single beam tube is analysis and a Bulirsch-Stoer method is adopted to solve motion equations of cesium atom instead of simplifying magnetic field gradient and effective magnetic moment,thus attaining new trajectory of cesium atom.The max difference between new trajectory and old trajectory attained with general simplification method is about 1.0 mm.The result influences the mounting position of parts in tube.This algorithm can use in analog calculation of cesium beam path to enhance short stability.

关 键 词：磁选态单束铯束管 双极型选态磁铁 布利厄施-施多厄方法 铯原子运动轨迹 

分 类 号：TM935.115[电气工程—电力电子与电力传动]