IPAC'26 - the 17th International Particle Accelerator Conference

Optimization with the PETRA IV lattice sextupoles for the mitigation of magnetic field imperfections

WEP5075

20 May 2026, 16:00

2h

C.I.D

Poster Presentation MC5.D02: Nonlinear Single Particle Dynamics Resonances, Tracking, Higher Order, Dynamic Aperture, Code Developments Poster session

Speaker

Konstantinos Paraschou (Deutsches Elektronen-Synchrotron DESY)

Description

As is typical for a design of a 4th generation light source, that of PETRA IV includes strong quadrupolar and sextupolar magnets which makes the beam dynamics of the storage ring sensitive to magnetic field imperfections. In particular, we show that field imperfections in the quadrupoles can drive non-linear resonances which can limit the efficiency of the top-up injection scheme in PETRA IV through a reduction of dynamic aperture. This work explores different strategies, which can be used in operation, of modifying the strengths of the sextupolar magnets to recover a potential loss in the dynamic aperture and injection efficiency.