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Computer Science > Computational Engineering, Finance, and Science

arXiv:2306.12844 (cs)
[Submitted on 22 Jun 2023]

Title:Combination of Measurement Data and Domain Knowledge for Simulation of Halbach Arrays with Bayesian Inference

Authors:Luisa Fleig, Melvin Liebsch, Stephan Russenschuck, Sebastian Schöps
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Abstract:Accelerator magnets made from blocks of permanent magnets in a zero-clearance configuration are known as Halbach arrays. The objective of this work is the fusion of knowledge from different measurement sources (material and field) and domain knowledge (magnetostatics) to obtain an updated magnet model of a Halbach array. From Helmholtz-coil measurements of the magnetized blocks, a prior distribution of the magnetization is estimated. Measurements of the magnetic flux density are used to derive, by means of Bayesian inference, a posterior distribution. The method is validated on simulated data and applied to measurements of a dipole of the FASER detector. The updated magnet model of the FASER dipole describes the magnetic flux density one order of magnitude better than the prior magnet model.
Subjects: Computational Engineering, Finance, and Science (cs.CE)
MSC classes: 35Q61, 65Z05, 65L60, 68W10, 60J20
Cite as: arXiv:2306.12844 [cs.CE]
  (or arXiv:2306.12844v1 [cs.CE] for this version)
  https://doi.org/10.48550/arXiv.2306.12844
Journal reference: IEEE Transactions on Magnetics 60 (2024)
Related DOI: https://doi.org/10.1109/TMAG.2023.3301976

Submission history

From: Luisa Fleig [view email]
[v1] Thu, 22 Jun 2023 12:31:36 UTC (1,306 KB)
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