Contribution to a conference proceedings/Journal Article

PUBDB-2025-01995

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Finite element simulation of fast corrector magnets for PETRA IV

Christmann, J.-M. (Corresponding author)Extern* ; De Gersem, H. ; von Tresckow, M. ; Aloev, A.DESY* ; Mirza, S. H.DESY* ; Pfeiffer, S.DESY* ; Schlarb, H.DESY*

2024
IOP Publ. Bristol

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Please use a persistent id in citations: doi:10.1088/1742-6596/2687/8/082010  doi:10.3204/PUBDB-2025-01995

Abstract: The new synchrotron light source PETRA IV at DESY will use a fast orbit feedback system with hundreds of fast corrector magnets to meet stringent orbit stability requirements. These magnets are operated at high frequencies, creating strong eddy currents that result in Joule losses and a time delay between applied voltage and aperture field. User experiments impose challenging requirements on beam operation to preserve the point of the radiation source. To meet the demanding feedback requirements, finite element simulations are needed to understand the characteristics of the corrector magnet. However, due to the small skin depths at high frequencies and the laminated structure of the yoke, these simulations need a very fine mesh and are thus very costly. Therefore, we homogenize the laminated yoke which reduces the computational effort but captures the eddy current effects accurately. The reduction of simulation times from several hours to a few minutes allows us to conduct extensive studies of the eddy current losses and the field quality of the magnets.

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Contributing Institute(s):

1. Strahlkontrollen (MSK)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. GRK 2128 - GRK 2128: AccelencE: Beschleunigerphysik und –technologie für Teilchenbeschleuniger mit Energierückgewinnung (264883531) (264883531)

Experiment(s):

1. (PETRA IV)

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Database coverage:
; ; ; Nationallizenz ; SCOPUS

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