Open AccessBoundary element method reconstruction of two‐dimensional magnetic‐field maps from measured boundary data in accelerator magnets
Author(s) -
Biccioli Leonardo,
Di Rienzo Luca,
Petrone Carlo,
Russenschuck Stephan
Publication year - 2019
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2018.5141
Subject(s) - magnet , electromagnetic coil , aperture (computer memory) , magnetic field , magnetometer , physics , boundary (topology) , radius , magnetic flux , superconducting magnet , optics , nuclear magnetic resonance , computational physics , acoustics , computer science , mathematical analysis , mathematics , computer security , quantum mechanics
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.