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@inproceedings{riemann:ipac2021-tupab238,
author = {B. Riemann and M. Aiba},
title = {{Algorithm to Analyze Complex Magnetic Structures Using a Tube Approach}},
booktitle = {Proc. IPAC'21},
pages = {1995--1998},
eid = {TUPAB238},
language = {english},
keywords = {quadrupole, multipole, HOM, octupole, sextupole},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-TUPAB238},
url = {https://jacow.org/ipac2021/papers/tupab238.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-TUPAB238},
abstract = {{Modern synchrotron light sources often require sophisticated multipole field distributions that need to be realized by complex magnet structures. To pre-validate these magnet structures via simulations, the extraction procedure needs to output standard multipoles as well as fringe effects. The approach presented in this manuscript uses a volumetric grid map of the magnetic flux density as input. After computation of the reference trajectory (leapfrog integration), a large linear system is solved to compute transverse polynomial coefficients of the magnetic scalar potential in a series of interconnected thin cylinders (linear basis functions) along with that reference. The import of these coefficients into a lattice simulation is discussed using a modification of the tracking code Tracy. The shown approach is routinely used to check models of SLS 2.0 magnets for their properties.}},
}