002928176 001__ 2928176
002928176 003__ SzGeCERN
002928176 005__ 20250417230609.0
002928176 0247_ $$2DOI$$9CERN$$a10.23730/CYRSP-2024-003.341
002928176 0248_ $$aoai:cds.cern.ch:2928176$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pINIS$$pcerncds:CERN
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002928176 035__ $$9Inspire$$a2901990
002928176 041__ $$aeng
002928176 100__ $$aBartosik, Hannes$$uCERN
002928176 245__ $$9CERN$$aI.8 — Transverse linear imperfections
002928176 260__ $$c2024
002928176 300__ $$a44 p
002928176 520__ $$9CERN$$aThis chapter addresses transverse linear imperfections in particle accelerators, with a particular focus on their impact on the transverse dynamics of particle beams in circular accelerators. The primary sources of these imperfections include magnetic field errors, which arise from uncertainties in magnet strengths and calibration, as well as magnet misalignments. The theoretical framework necessary for understanding these imperfections is established, introducing concepts such as multipole expansion of magnetic fields. This foundation paves the way for addressing non-linear effects, which will be discussed in the following chapter. Practical examples, including the effects of magnetic hysteresis and quadrupole magnet misalignments, are presented to illustrate the real-world consequences of these imperfections, such as closed orbit distortion and optics function distortions like beta-beating and tune shifts, as well as coupling. Furthermore, this chapter discusses local and global closed orbit correction techniques using dipole correctors, as well as advanced methods like Singular Value Decomposition (SVD) and MICADO algorithms. The chapter also provides practical methods for estimating the impact of imperfections on closed orbit, tune shifts, beta-beating, and coupling, offering a valuable toolkit for the design and optimization of circular accelerators.
002928176 540__ $$aCC-BY-4.0$$bCERN$$uhttps://creativecommons.org/licenses/by/4.0/
002928176 542__ $$dCERN$$g2024
002928176 65017 $$2SzGeCERN$$aAccelerators and Storage Rings
002928176 690C_ $$aARTICLE
002928176 690C_ $$aCERN
002928176 690C_ $$aYELLOWREPCONTRIB
002928176 700__ $$aGamba, Davide$$uCERN
002928176 773__ $$02902634$$c341$$pCERN Yellow Rep. School Proc.$$v3$$wC24-11-27$$y2024
002928176 8564_ $$82722144$$s13454579$$uhttps://cds.cern.ch/record/2928176/files/document.pdf$$yFulltext
002928176 960__ $$a13
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002928176 980__ $$aARTICLE
002928176 980__ $$aConferencePaper
002928176 980__ $$aBookChapter