文章基本信息

标题：Measuring the magnetic axis alignment during solenoids working
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作者：Pasquale Arpaia ; Biase Celano ; Luca De Vito 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2018
卷号：8
期号：1
页码：11426
DOI：10.1038/s41598-018-29667-1
语种：English
出版社：Springer Nature
摘要：A method for monitoring the misalignment of the magnetic axis in solenoids is proposed. This method requires only a few measurements of the magnetic field at fixed positions inside the magnet aperture, and thus overcomes the main drawback of sturdy moving mechanics of other Hall sensor-based methods. Conversely to state-of-the-art axis determination, the proposed method can be applied also during magnet operations, when the axis region and almost the whole remaining magnet aperture are not accessible. Moreover, only a few measurements of the magnetic field at fixed positions inside the magnet aperture are required: thus a slow process such as the mapping of the whole aperture of a magnet by means of moving stages is not necessary. The mathematical formulation of the method is explained, and a case study on a model of a multi-layer solenoid is presented. For this case study, the uncertainty is assessed and the optimal placement of the Hall transducers is derived.