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München 2009 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 78: Beschleunigerphysik 1

T 78.1: Vortrag

Montag, 9. März 2009, 17:00–17:15, A213

sFLASH: A seeding project for a XUV FEL — •Jörn Bödewadt1, Armin Azima1, Francesca Curbis1, Hossein Delsim-Hashemi1, Markus Drescher1, Stefan Düsterer4, Josef Feldhaus4, Rasmus Ischebeck5, Shaukat Khan3, Tim Laarmann4, Theophilos Maltezopoulos1, Atoosa Meseck2, Velizar Miltchev1, Manuel Mittenzwey1, Jörg Rossbach1, Holger Schlarb4, Sebastian Schulz1, Roxana Tarkeshian1, and Marek Wieland11Uni HH, Hamburg — 2HZB, Berlin — 3DELTA, Dortmund — 4DESY, Hamburg — 5PSI, Villigen

A seeded free-electron laser operating in the soft X-ray (XUV) spectral range will be added to the SASE FEL facility FLASH. For this purpose, a 40 m long section upstream of the existing SASE undulator will be rebuilt during the shutdown in fall 2009. This includes the injection of the seed beam into a new 10 m variable-gap undulator, the out-coupling of the seeded FEL radiation and all diagnostics for photon- and electron beams. The XUV seed pulse is generated by high harmonics (HHG) from a near-infrared laser, optically synchronized with FLASH. After amplification within the undulators the XUV light will be guided towards diagnostic stations. Besides a proof-of-principle demonstration for seeding at short wavelength the purpose of this development is to provide future pump-probe experiments with a more stable FEL source in terms of spectral properties and timing.

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