1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

Parametric optics for FUDU lattices with strongly focusing undulators

WEPM100
4 Jun 2025, 16:00
2h
Exhibiton Hall A _Magpie (TWTC)

Exhibiton Hall A _Magpie

TWTC

Poster Presentation MC5.D01 Beam Optics Lattices, Correction Schemes, Transport Wednesday Poster Session

Speaker

Mathias Vogt (Deutsches Elektronen-Synchrotron DESY)

Description

In low-energy FEL beamlines, like SXFEL-SBP at the Shanghai Synchrotron Radiation Facility and FLASH1 and FLASH2 at DESY, SASE undulators with perfectly reasonable strength may dynamically affect the optics of the Focusing-Undulator-Defocusing-Undulator (FUDU) cells, pre-matched for a given fixed set of undulator parameters, so violently that a dynamical re-adjustment of the FUDU quadrupoles becomes mandatory.
Here we refine and generalize a result reported at the FEL conference 2024. Our almost-analytical result allows implementation in the control system, and is valid for fairly general symplectic coupling-free perturbing matrices. In an approximative sense it includes undulators changing along the beamline and even missing undulators in given cells.

Region represented Europe
Paper preparation format LaTeX

Author

Johann Zemella (Deutsches Elektronen-Synchrotron DESY)

Co-authors

Bart Faatz (Shanghai Advanced Research Institute) Lucas Schaper (Deutsches Elektronen-Synchrotron DESY) Mathias Vogt (Deutsches Elektronen-Synchrotron DESY) Zhichu Chen (Shanghai Synchrotron Radiation Facility)

Presentation materials

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