Journal Article/Contribution to a conference proceedings

PUBDB-2024-07171

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Corrector coils with variable field direction for FLASH 2020

Götze, K. (Corresponding author)DESY* ; Vagin, P.DESY* ; Neumann, P.DESY* ; Yamin, S.Extern*DESY* ; Kekilli, H.DESY* ; Tischer, M.DESY*

2025
IOP Publ. Bristol

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Please use a persistent id in citations: doi:10.1088/1742-6596/3010/1/012019  doi:10.3204/PUBDB-2024-07171

Abstract: Despite thorough tuning of insertion devices for storage rings or linear accelerators,a (usually gap dependent) kick to the electron beam remains and has to becorrected with the help of steerer coils. These small, resistive coils are placed upstreamand downstream of an undulator and by varying the strength and direction of the generatedmagnetic field, they allow to deflect the beam by a small angle and to consequentlycorrect its trajectory. For the upgrade of the free-electron laser FLASH at DESY Hamburgwe have developed compact and cost-efficient air-cooled steerer coils based on asolid ferrite core around which four sub-coils are wound in a particular geometry. Byenergizing these coils separately, the deflecting field can be tuned and adapted to the gapdependent kick. The ferrite core enhances the coil strength by more than 50% comparedto previous designs enabling them to generate 0.53(0.44)Tmm for horizontal (vertical)field at 1A while still making the steerer suitable for use in a slow feedback system. However,due to the proximity of some steerers to permanent magnet-based phase shifters,significant cross-talk between the two devices is introduced and needs to be mitigated.

Note: 2025 J. Phys.: Conf. Ser. 3030

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Contributing Institute(s):

1. FS-Undulator Systeme (FS-US)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)
2. 6G2 - FLASH (DESY) (POF4-6G2) (POF4-6G2)

Experiment(s):

1. FLASH 2020+ Project

Appears in the scientific report 2025

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Database coverage:
; ; ; Nationallizenz ; SCOPUS

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Book/Proceedings Laasch, W. (Editor)DESY* ; Feidenhans'l, R. (Editor)XFEL.EU*
Synchrotron radiation instrumentation: proceedings, 15th international conference, SR>I 2024, Hamburg, Germany August 26-30, 2024
202515th International Conference on Synchrotron Radiation Instrumentation, SRI 2024, HamburgHamburg, Germany, 26 Aug 2024 - 30 Aug 20242024-08-262024-08-30 Bristol, UK : IOP Publishing Ltd, Journal of Physics: Conference Series 3010 (2025), nonconsec. pag. (2025)2025     Files  Fulltext BibTeX | EndNote: XML, Text | RIS

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