17–22 May 2026
C.I.D
Europe/Zurich timezone

BESSY III Insertion Devices: Impact and Linear Optics Compensation

WEP5017
20 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC5.D01: Beam Optics Lattices, Correction Schemes, Transport Poster session

Speaker

Sébastien Joly (Helmholtz-Zentrum Berlin für Materialien und Energie)

Description

BESSY III, a 4th-generation synchrotron light source, will deliver diffraction-limited soft-to-tender X-rays to enable high-impact applications for users in material science, energy and catalysis materials, life science, and more.

As a part of its Conceptual Design Report (CDR), ensuring operation with Insertion Devices (ID) at their minimum gaps without compromising beam quality is essential.

ID fringe fields introduce defocusing effects, which are compensated here using two quadrupole doublets surrounding each straight section.
Using pyAT, two preliminary compensation strategies are evaluated: (i) global tune correction and (ii) local phase advance matching. Performance is benchmarked via residual beta function distortions, dynamic aperture (DA), momentum acceptance (MA), and required quadrupole strengths. Additionally, the energy loss per turn and ID radiated power deposition are also quantified for each ID type.

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Author

Sébastien Joly (Helmholtz-Zentrum Berlin für Materialien und Energie)

Co-author

Benat Alberdi-Esuain (Helmholtz-Zentrum Berlin für Materialien und Energie)

Presentation materials

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