sFLASH - Present status and commissioning results

S. Ackermann, Armin Azima, J. Bödewadt, F. Curbis, M. Drescher, E. Hass, M. Mittenzwey, T. Maltezopoulos, V. Miltchev, J. Rönsch-Schulenburg, J. Rossbach, R. Tarkeshian, H. Delsim-Hashemi, K. Honkavaara, Tim Laarmann, H. Schlarb, S. Schreiber, M. Tischer, R. Ischebeck

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding


The sFLASH-experiment has been built at the Free-Electron Laser in Hamburg (FLASH) to study the high-gain-FEL amplification of a laser seed from a high harmonic generation (HHG) source. Ideally, the HHG-seed can be amplified up to a GW-power level, improving both the shot-to-shot stability and the longitudinal coherence of the FEL-pulse. In 2010/2011 the sFLASH-components and sub-systems have been fully installed and commissioned within about 300 hours FLASH beam time dedicated to the seeding project. Procedures to achieve a full six-dimensional overlap between the seed and the electron bunch have been developed and tested. An important milestone reached in the commissioning period is the sFLASH-SASE lasing mode, which was being achieved on a regular basis. A step forward towards the next milestone - the direct seeding in the XUV-wavelength range - is the sFLASH-upgrade during the planed FLASH-shutdown in autumn 2011. In this contribution the main commissioning results and highlights of the operational experience will be discussed in detail.

Original languageEnglish
Title of host publicationFEL 2011 - 33rd International Free Electron Laser Conference
Number of pages4
Publication statusPublished - 2011 Dec 1
Externally publishedYes
Event33rd International Free Electron Laser Conference, FEL 2011 - Shanghai, China
Duration: 2011 Aug 222011 Aug 26

Publication series

NameFEL 2011 - 33rd International Free Electron Laser Conference


Conference33rd International Free Electron Laser Conference, FEL 2011


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