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Poster communications

Status of the SOLEIL femtosecond X-ray source

Abstract : An electron bunch slicing setup is presently under construction on the SOLEIL storage ring for delivering 100 fs (rms) long photon pulses to two undulator-based beamlines providing soft (TEMPO) and hard X-rays (CRISTAL). Thanks to the non-zero dispersion function present in all straight sections of the storage ring, the sliced bunches can be easily separated from the core bunches. The modulator is a wiggler composed of 20 periods of 164.4 mm. It produces a magnetic field of 1.8 T at a minimum gap of 14.5 mm. To modulate the kinetic energy of the electrons in the wiggler, a Ti:Sa laser will be used, which produces 50 fs pulses at 800 nm with a repetition rate of 2.5 kHz. The laser beam is splitted into two branches in order to provide 2 mJ to the modulator and 0.5 mJ as pump pulse for the CRISTAL and TEMPO end stations. Focusing optics and beam path, from the laser hutch to the inside of the storage ring tunnel are presently under finalization. In this paper, we will report on the specificities of the SOLEIL setup, the status of its installation and the expected performances.
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O. Marcouillé, L. Cassinari, M.-E. Couprie, P. Hollander, C. Herbeaux, et al.. Status of the SOLEIL femtosecond X-ray source. 34th International Free-Electron Laser Conference (FEL 2012), Aug 2012, Nara, Japan. Joint Accelerator Conferences Website, WEPD04, pp.377-380, 2012. ⟨in2p3-00749414⟩

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