Paper | Title | Page |
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TUPAB225 | 3D Magnetic Field Analysis of LHC Final Focus Quadrupoles with Beam Screen | 1952 |
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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.
*E. H. Maclean et al., "New approach to LHC optics commissioning for the nonlinear era", Phys. Rev. Acc. B, vol. 22, pp. 061004, June 2019. |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB225 | |
About • | paper received ※ 18 May 2021 paper accepted ※ 08 July 2021 issue date ※ 12 August 2021 | |
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