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TY - CONF AU - Frank, J. AU - Arlandoo, M. AU - Goslawski, P. AU - Mertens, T. AU - Ries, M. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Alpha Buckets in Longitudinal Phase Space: A Bifurcation Analysis J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - At HZB’s BESSY II and MLS facilities we have the ability to tune the momentum compaction factor α up to second non-linear order. The non-linear dependence α(δ) brings qualitative changes to the longitudinal phase space and introduces new fix points α(δ)=0 which produce the so-called α-buckets. We present with this paper an analysis of this phenomena from the standpoint of bifurcation theory. With this approach we were able to characterize the nature of the fix points and their position in direct dependence on the tunable parameters. Furthermore, we are able to place stringent conditions onto the tunable parameters to either create or destroy α-buckets. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1917 EP - 1919 KW - operation KW - synchrotron KW - storage-ring KW - lattice KW - closed-orbit DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-TUPAB214 UR - https://jacow.org/ipac2021/papers/tupab214.pdf ER -