Experience with Multi-Beam and Multi-Beamline FEL-Operation

8th International Particle Accelerator Conference

Rönsch-Schulenburg, J.^1 ; Faatz, B.^1 ; Honkavaara, K.^1 ; Kuhlmann, M.^1 ; Schreiber, S.^1 ; Treusch, R.^1 ; Vogt, M.^1

Deutsches Elektronen-Synchrotron DESY, Hamburg

22607, Germany^1

关键词: Operating experience;    Pulse parameter;    Repetition rate;    Simultaneous operation;    Soft X ray pulse;    Superconducting accelerator;    Superconducting technology;    Undulator beamlines;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/874/1/012023/pdf
DOI  :  10.1088/1742-6596/874/1/012023

来源: IOP

【 摘 要 】

DESY's free-electron laser FLASH provides soft X-ray pulses for scientific users at wavelengths down to 4nm simultaneously in two undulator beamlines. They are driven by a common linear superconducting accelerator with a beam energy of up to 1.25 GeV. The superconducting technology allows the acceleration of electron bunch trains of several hundred bunches with a spacing of 1 microsecond or more and a repetition rate of 10 Hz. A fast kickerseptum system directs one part of the bunch train to FLASH1 and the other part to FLASH2 keeping the full 10 Hz repetition rate for both. The unique setup of FLASH allows independent FEL pulse parameters for both beamlines. In April 2016, simultaneous operation of FLASH1 and FLASH2 for external users started. This paper reports on our operating experience with this type of multi-beam, multi-beamline set-up.