磁瓶飞行时间谱仪用复合磁场系统设计  

Design of combined magnetic field system for magnetic-bottle time-of-flight spectrometer

作　　者：王超[1] 田进寿[1] 张美志[2] 康轶凡[3] 

机构地区：[1]中国科学院西安光学精密机械研究所,瞬态光学与光子技术国家重点实验室,西安710119 [2]西安邮电学院电子工程学院,西安710061 [3]空军工程大学理学院,西安710051

出　　处：《强激光与粒子束》2011年第7期1810-1812,共3页High Power Laser and Particle Beams

基　　金：国家自然科学基金青年基金项目(60901036);国家自然科学基金面上基金项目(60777027);中国科学院创新实验室基金项目(CXJJ-10-S13)

摘　　要：根据磁瓶飞行时间谱仪磁场系统的基本要求,设计了一套符合其使用的复合磁场系统。最高强度达1.2 T的强非均匀磁场部分由永久磁铁和结构经过优化的截圆锥状磁极靴所产生。永久磁铁为N52系列NdFeB,磁极靴材料为高磁导率珀明德合金。强度为1.0×10-3T的弱均匀引导磁场由半径为3 cm、长度为3 m螺线管提供。磁极靴与螺线管之间的距离为5 cm。Based on the primary requirement for the magnetic field system in magnetic-bottle time-of-flight spectrometer,an appropriate combined inhomogeneous magnetic field system is designed.The inhomogeneous higher magnetic field part,with the highest field of 1.2 T,is produced by the combination of a permanent magnet and a pole piece with optimized shape.The magnet,known as NdFeB magnet,is one of rare earth permanent magnets in N52.The guiding uniform magnetic field of 1.0×10-3 T is provided by solenoid,with length of 3 m and radius of 3 cm.The pitch between the pole piece and the near end of used solenoid is determined to be 5 cm,which can satisfy the actual engineering needs.

关 键 词：磁瓶飞行质谱仪 飞行时间 极靴 准直化 绝热参数 

分 类 号：O463[机械工程—光学工程]