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Additively Manufactured NdFeB Polyphenylene Sulfide Halbach Magnets to Generate Variable Magnetic Fields for Neutron Reflectometry
3D Printing and Additive Manufacturing ( IF 3.1 ) Pub Date : 2022-08-03 , DOI: 10.1089/3dp.2020.0340
Tej Nath Lamichhane 1 , Timothy R Charlton 2 , Brian Andrews 1 , Devanshi Malaviya 3 , Arjun K Pathak 3 , Haile Ambaye 2 , Mathieu Doucet 2 , Valeria Lauter 2 , John Katsaras 2, 4, 5 , Brian K Post 6 , Mariappan Parans Paranthaman 1
Affiliation  

Halbach arrays are the most efficient closed structures for generating directed magnetic fields and gradients, and are widely used in various electric machines. We utilized fused deposition modeling-based Big Area Additive Manufacturing technology to print customized, compensated concentric Halbach array rings, using polyphenylene sulfide-bonded NdFeB permanent magnets for polarized neutron reflectometry. The Halbach rings could generate a 0 ≤ B ≤ 0.30 T field, while preserving 90% polarization of an axial neutron beam. Polarized neutron beams are used to study a wide range of structural and magnetic phenomena spanning physics, chemistry, and biology. In this study, we demonstrate the effectiveness of additive manufacturing for producing prototype Halbach arrays, characterize their magnetic properties, and generated magnetic fields, and discuss the conservation of neutron beam polarization as a function of magnetic field.

中文翻译:

增材制造的 NdFeB 聚苯硫醚 Halbach 磁体为中子反射计产生可变磁场

Halbach 阵列是产生定向磁场和梯度的最有效的封闭结构,广泛应用于各种电机中。我们利用基于熔融沉积建模的大面积增材制造技术打印定制的补偿同心 Halbach 阵列环,使用聚苯硫醚键合 NdFeB 永磁体进行极化中子反射测量。Halbach 环可以产生 a 0 ≤  B ≤0.30 T 场,同时保留轴向中子束的 90% 极化。极化中子束用于研究范围广泛的结构和磁性现象,涵盖物理学、化学和生物学。在这项研究中,我们展示了增材制造在生产 Halbach 阵列原型方面的有效性,描述了它们的磁性和产生的磁场,并讨论了中子束极化守恒作为磁场的函数。
更新日期:2022-08-04
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