Boundary element method reconstruction of two‐dimensional magnetic‐field maps from measured boundary data in accelerator magnets. Issue 1 (1st January 2019)

• Record Type: Journal Article
• Authors: Biccioli, Leonardo; Di Rienzo, Luca; Petrone, Carlo; Russenschuck, Stephan
• Is Part Of: IET science, measurement & technology. Volume 13:Issue 1(2019)
• Page Start: 60
• Page End: 66
• Publication Date: 2019-01-01
• Subjects: finite element analysis -- magnetic flux -- magnetometers -- shafts -- accelerator magnets -- image reconstruction -- magnetic field measurement -- coils -- boundary‐elements methods; rotating‐coil magnetometers -- standard devices -- integrated magnetic fields -- accelerator magnets -- magnetic flux -- measurement shaft -- induction coils -- rectangular aperture -- two‐dimensional map -- integrated magnetic field distribution -- boundary element method reconstruction -- magnetic‐field maps -- magnet aperture -- boundary data -- translating fluxmeter; Measurement -- Periodicals; Electrical engineering -- Periodicals; Electronics -- Periodicals; Nanotechnology -- Periodicals; Electromagnetism -- Periodicals; Medical instruments and apparatus -- Periodicals; 621.3
• DOI: 10.1049/iet-smt.2018.5141
• Languages: English
• ISSNs: 1751-8822

Abstract

Abstract : Rotating‐coil magnetometers are standard devices for measuring integrated magnetic fields of accelerator magnets. The coil intercepts the magnetic flux at a radius given by the dimensions of the measurement shaft that comprises a set of induction coils. For magnets of a rectangular aperture with a large aspect ratio (larger than 3:1) the cylindrical domain will cover only a portion of the magnet aperture. We, therefore, explore an alternative sampling technique using boundary data acquired from a displaced stretched‐wire or from a translating fluxmeter. The method presented in this study concerns the reconstruction of the two‐dimensional map of the integrated magnetic field distribution in the entire magnet aperture using the measured boundary data.