MEDSI2023 - List of Authors (Dommach, M.)

Paper	Title	Page
TUOAM01	Upgrade of European XFEL Beam Shutters for Full Beam Operation
	M. Dommach EuXFEL, Schenefeld, Germany
	The European XFEL, a Free-Electron-Laser facility in the Hamburg area (Germany), started user operation in September 2017. In full operation the novel facility will produce coherent femtosecond pulses with unprecedented brilliance in the energy range from 250 eV to 25 keV at MHz repetition rate. The facility consists of a linear accelerator and three photon beamlines, located in underground tunnels. Different sections of the beamlines can be closed with mechanical shutters, blocking the beam and allowing access to one of the tunnels or experimental hutches. Material damage tests have shown that the X-ray beam, in an extremely unlikely event, is capable of damaging the absorber in front of the shutters, if focusing elements like CRLs or bendable mirrors are not operated properly. To exclude such events, the power at different parts of the beam transport system is currently limited. In order to abolish this limitation an upgrade of all absorbers was carried out implementing new absorbing materials like CVD diamond and an active safety system. This presentation will give an overview of the new design, implementation and first commissioning results from an engineering point of view.
	Slides TUOAM01 [15.933 MB]
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WEPPP013	Mechanical Design and Integration of the SXP Scientific Instrument at the European XFEL	172
	V.V. Vardanyan, D.G. Doblas-Jimenez, M. Dommach, P.G. Grychtol, M. Izquierdo, N. Kohlstrunk, D. La Civita, S. Molodtsov, O.J. Ohnesorge, T.E. Tikhodeeva, M. Vannoni EuXFEL, Schenefeld, Germany J. Buck, R.K. Rossnagel DESY, Hamburg, Germany S.G. Schönhense Johannes Gutenberg University Mainz, Institut für Physik, Mainz, Germany T.S. Thiess IEAP, Kiel, Germany
	The European XFEL provides femtosecond X-ray pulses with a MHz repetition rate in an extended photon energy range from 0.3 to 30 keV. Soft X-rays between 0.3 and 3 keV are produced in the SASE3 undulator system, enabling both spectroscopy and coherent diffraction imaging of atoms, molecules, clusters, ions and solids. The high repetition rate opens the possibility to perform femtosecond time-resolved photoelectron spectroscopy (TR-XPES) on solids. This technique allows the simultaneous understanding of the evolution of the electronic, chemical and atomic structure of solids upon an ultrafast excitation. The realization with soft X-rays requires the use of MHz FELs. In this contribution, we present the mechanical design and experimental realization of the SXP instrument. The main technical developments of the instrument components and the TR-XPES experimental setup are described.
	Poster WEPPP013 [1.253 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP013
About •	Received ※ 24 October 2023 — Revised ※ 04 November 2023 — Accepted ※ 07 November 2023 — Issued ※ 12 March 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

TUOAM01

Upgrade of European XFEL Beam Shutters for Full Beam Operation

M. Dommach
EuXFEL, Schenefeld, Germany

The European XFEL, a Free-Electron-Laser facility in the Hamburg area (Germany), started user operation in September 2017. In full operation the novel facility will produce coherent femtosecond pulses with unprecedented brilliance in the energy range from 250 eV to 25 keV at MHz repetition rate. The facility consists of a linear accelerator and three photon beamlines, located in underground tunnels. Different sections of the beamlines can be closed with mechanical shutters, blocking the beam and allowing access to one of the tunnels or experimental hutches. Material damage tests have shown that the X-ray beam, in an extremely unlikely event, is capable of damaging the absorber in front of the shutters, if focusing elements like CRLs or bendable mirrors are not operated properly. To exclude such events, the power at different parts of the beam transport system is currently limited. In order to abolish this limitation an upgrade of all absorbers was carried out implementing new absorbing materials like CVD diamond and an active safety system. This presentation will give an overview of the new design, implementation and first commissioning results from an engineering point of view.

Slides TUOAM01 [15.933 MB]

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPPP013

Mechanical Design and Integration of the SXP Scientific Instrument at the European XFEL

172

V.V. Vardanyan, D.G. Doblas-Jimenez, M. Dommach, P.G. Grychtol, M. Izquierdo, N. Kohlstrunk, D. La Civita, S. Molodtsov, O.J. Ohnesorge, T.E. Tikhodeeva, M. Vannoni
EuXFEL, Schenefeld, Germany
J. Buck, R.K. Rossnagel
DESY, Hamburg, Germany
S.G. Schönhense
Johannes Gutenberg University Mainz, Institut für Physik, Mainz, Germany
T.S. Thiess
IEAP, Kiel, Germany

The European XFEL provides femtosecond X-ray pulses with a MHz repetition rate in an extended photon energy range from 0.3 to 30 keV. Soft X-rays between 0.3 and 3 keV are produced in the SASE3 undulator system, enabling both spectroscopy and coherent diffraction imaging of atoms, molecules, clusters, ions and solids. The high repetition rate opens the possibility to perform femtosecond time-resolved photoelectron spectroscopy (TR-XPES) on solids. This technique allows the simultaneous understanding of the evolution of the electronic, chemical and atomic structure of solids upon an ultrafast excitation. The realization with soft X-rays requires the use of MHz FELs. In this contribution, we present the mechanical design and experimental realization of the SXP instrument. The main technical developments of the instrument components and the TR-XPES experimental setup are described.

Poster WEPPP013 [1.253 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP013

About •

Received ※ 24 October 2023 — Revised ※ 04 November 2023 — Accepted ※ 07 November 2023 — Issued ※ 12 March 2024

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)