FEL2012 - List of Authors (Zemella, J.)

Paper	Title	Page
WEPD28	Electron Optics and Magnetic Chicane for Matching an XFEL-Oscillator Cavity into a Beamline at the European XFEL Laboratory	425
	C.P. Maag DESY, Hamburg, Germany J. Roßbach, J. Zemella Uni HH, Hamburg, Germany
	At DESY the European XFEL (X-Ray Free-Electron Laser) laboratory is currently under construction. Due to the time structure of its electron bunch trains it is in principle possible to run a FELO (Free-Electron Laser Oscillator) at the European XFEL. The major elements of a FELO are the cavity and the undulator. To couple the electron beam with the required beta functions into the cavity, a magnetic chicane and an appropriate focusing structure are considered. In this paper we discuss the lattice design of the magnetic chicane and the focusing section. We also present the results of the beam dynamics simulations performed.

WEPD29	Numerical Simulations of an XFELO for the European XFEL driven by a Spent Beam	429
	J. Zemella, C.P. Maag, J. Roßbach Uni HH, Hamburg, Germany H. Sinn XFEL. EU, Hamburg, Germany M. Tolkiehn DESY, Hamburg, Germany
	The European XFEL will be an X-ray free electron laser laboratory at DESY in Hamburg Germany. In the baseline design the light pulses will be generated in long undulators via the SASE process. The wavelengths of the light pulses will be between 5 nm and 0.05 nm. Since SASE pulses have a poor longitudinal coherence a lot of research is ongoing to overcome the statistical fluctuations of the SASE pulses. Some years ago Kim et al. proposed an FEL oscillator for light sources based on energy-recovery linacs (ERL), using Diamond Bragg crystals to perform a high reflective cavity in the X-ray regime (XFELO). Since the European XFEL will be based on superconducting accelerator structures it will deliver a long train of electron bunches which might be suitable to support an XFELO arrangement as well. In particular, the spent beam at the exit of a SASE FEL might be still qualified to drive an XFELO. Theoretical simulations of an oscillator based on Diamond crystals for the European XFEL will be presented using electron bunches of a spent beam.

Paper

Title

Page

Electron Optics and Magnetic Chicane for Matching an XFEL-Oscillator Cavity into a Beamline at the European XFEL Laboratory

425

C.P. Maag
DESY, Hamburg, Germany
J. Roßbach, J. Zemella
Uni HH, Hamburg, Germany

At DESY the European XFEL (X-Ray Free-Electron Laser) laboratory is currently under construction. Due to the time structure of its electron bunch trains it is in principle possible to run a FELO (Free-Electron Laser Oscillator) at the European XFEL. The major elements of a FELO are the cavity and the undulator. To couple the electron beam with the required beta functions into the cavity, a magnetic chicane and an appropriate focusing structure are considered. In this paper we discuss the lattice design of the magnetic chicane and the focusing section. We also present the results of the beam dynamics simulations performed.

WEPD29

Numerical Simulations of an XFELO for the European XFEL driven by a Spent Beam

429

J. Zemella, C.P. Maag, J. Roßbach
Uni HH, Hamburg, Germany
H. Sinn
XFEL. EU, Hamburg, Germany
M. Tolkiehn
DESY, Hamburg, Germany

The European XFEL will be an X-ray free electron laser laboratory at DESY in Hamburg Germany. In the baseline design the light pulses will be generated in long undulators via the SASE process. The wavelengths of the light pulses will be between 5 nm and 0.05 nm. Since SASE pulses have a poor longitudinal coherence a lot of research is ongoing to overcome the statistical fluctuations of the SASE pulses. Some years ago Kim et al. proposed an FEL oscillator for light sources based on energy-recovery linacs (ERL), using Diamond Bragg crystals to perform a high reflective cavity in the X-ray regime (XFELO). Since the European XFEL will be based on superconducting accelerator structures it will deliver a long train of electron bunches which might be suitable to support an XFELO arrangement as well. In particular, the spent beam at the exit of a SASE FEL might be still qualified to drive an XFELO. Theoretical simulations of an oscillator based on Diamond crystals for the European XFEL will be presented using electron bunches of a spent beam.