The BESSY soft x-ray FEL

Rolf Follath

doi:10.1117/12.724687

18 May 2007 The BESSY soft X-ray FEL

Rolf Follath

Proceedings Volume 6586, Damage to VUV, EUV, and X-ray Optics; 658604 (2007) https://doi.org/10.1117/12.724687
Event: International Congress on Optics and Optoelectronics, 2007, Prague, Czech Republic

Abstract

Free electron lasers (FEL) for the hard- and soft X-ray regime are promoted in many projects around the world and the first VUV-FEL with wavelengths down to 20 nm is already in operation at DESY in Hamburg. They open up new domains in coherent radiation, time resolution and intensity and extend current X-ray science. The BESSY project of a 2^nd generation FEL facility proposes the implementation of an externally seeded FEL with significantly improved beam quality compared to the conventional self seeded SASE-FELs. The BESSY design as described in the technical design report¹ provides full tunability of photon energies from 24 eV to 1 keV, complete polarisation control and reproducible pulse structures with pulse lengths in the femtosecond range. The external seeding ensures the synchronisation to other laser sources necessary for pump-probe experiments and provides shot-to-shot reproducible pulse properties.

Citation Download Citation

Rolf Follath "The BESSY soft X-ray FEL", Proc. SPIE 6586, Damage to VUV, EUV, and X-ray Optics, 658604 (18 May 2007); https://doi.org/10.1117/12.724687

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