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Elaborated Modeling of Synchrotron Motion in Vlasov-Fokker-Planck Solvers

Schönfeldt, P.; Boltz, T.; Mochihashi, A.; Leonard Steinmann, J.; Müller, A.-S.

Solving the Vlasov-Fokker-Planck equation is a well-tested approach to simulate dynamics of electron bunches self-interacting with their own wake-field. Typical implementations model the dynamics of a charge density in a damped harmonic oscillator, with a small perturbation due to collective effects. This description imposes some limits to the applicability: Because after a certain simulation time coherent synchrotron motion will be damped down, effectively only the incoherent motion is described. Furthermore – even though computed - the tune spread is typically masked by the use of a charge density instead of individual particles. As a consequence, some effects are not reproduced. In this contribution, we present methods that allow to consider single-particle motion, coherent synchrotron oscillations, non-linearities of the accelerating voltage, higher orders of the momentum compaction factor, as well as modulations of the accelerating voltage. We also provide exemplary studies – based on the KIT storage ring KARA (KArlsruhe Research Accelerator) - to show the potentiality of the methods.

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Verlagsausgabe §
DOI: 10.5445/IR/1000087573
Veröffentlicht am 22.11.2018
DOI: 10.1088/1742-6596/1067/6/062025
Cover der Publikation
Zugehörige Institution(en) am KIT Laboratorium für Applikationen der Synchrotronstrahlung (LAS)
Institut für Beschleunigerphysik und Technologie (IBPT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2018
Sprache Englisch
Identifikator ISSN: 1742-6588, 1742-6596
KITopen-ID: 1000087573
HGF-Programm 54.01.01 (POF III, LK 01)
ps- und fs-Strahlen
Erschienen in Journal of physics / Conference Series
Band 1067
Heft 6
Seiten Art. Nr.: 062025
Bemerkung zur Veröffentlichung 9th International Particle Accelerator Conference, IPAC 2018; J.W. Marriott Parq HotelVancouver; Canada; 29 April 2018 through 4 May 2018
Nachgewiesen in Scopus
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