Quadrupole stability in nonuniform fill patterns
نویسندگان
چکیده
In previous publications, the effect of inhomogeneous beam loading Landau cavities due to a nonuniform fill pattern in storage ring has been studied with aim predicting resulting longitudinal profiles bunches and their time offsets relative main rf [T. Olsson et al., Phys. Rev. Accel. Beams 21, 120701 (2018)]. This work was extended treat dipolar coupled-bunch modes driven by beam-excited higher-order [F. J. Cullinan 23, 074402 (2020)]. These are interest because they can become unstable, leading an increase energy spread. The theory now once again cover case quadrupole where it is lengths that oscillating, not centroids. outlined its predictions thoroughly benchmarked against from macroparticle tracking. Observations effects patterns on instabilities made interpreted. Results measurements at MAX IV 3 GeV ring, interpreted using theoretical calculations, then presented continue investigation.
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ژورنال
عنوان ژورنال: Physical review accelerators and beams
سال: 2022
ISSN: ['2469-9888']
DOI: https://doi.org/10.1103/physrevaccelbeams.25.044401