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@inproceedings{pugnat:ipac2021-tupab225,
author = {T. Pugnat and S. Bagnis and B. Dalena and C. Lorin},
title = {{3D Magnetic Field Analysis of LHC Final Focus Quadrupoles with Beam Screen}},
booktitle = {Proc. IPAC'21},
pages = {1952--1955},
eid = {TUPAB225},
language = {english},
keywords = {quadrupole, octupole, focusing, HOM, database},
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-TUPAB225},
url = {https://jacow.org/ipac2021/papers/tupab225.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-TUPAB225},
abstract = {{During the LHC commissioning, a discrepancy in the non-linear corrector strengths between the model and the beam-based values has been observed*. This has motivated the reconstruction of the 3D finite element model for the LHC final focusing MQXA type magnet. The longitudinal higher orders magnetic field pseudo-harmonics are computed taking into account ovalization of the magnet, interconnections design, and beam screens. The effect of this 3D field on the computation of the nonlinear correctors is evaluated and compared with beam-based corrector values.}},
}