磁瓶飞行时间谱仪用复合磁场系统设计

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

1.
State Key Laboratory of Transient Optics and Photonics,Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an 710119,China;
2.
School of Electronics Engineering,Xi’an University of Post and Telecommunication,Xi’an 710061,China;
3.
School of Science,Air Force Engineering University,Xi’an 710051,China

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1.0×10-3 T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。
- 磁瓶飞行质谱仪 /
- 飞行时间 /
- 极靴 /
- 准直化 /
- 绝热参数
Abstract: 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．
- magnetic-bottle time-of-flight spectrometer /
- time-of-flight /
- pole piece /
- parallelization /
- adiabatic parameter

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