First lasing of a free electron laser in the soft X-ray spectral range with echo enabled harmonic generation

Allaria E, Abrami A, Badano L, Bossi M, Capotondi F, Castronovo D, Cautero M, Cinquegrana P, Cudin I, Danailov MB, Braun HH, Ferrari E, Prat E, Reiche S, Xiang D, et al.
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Allaria, E., Abrami, A., Badano, L., Bossi, M., Capotondi, F., Castronovo, D., … Xiang, D. (2019). First lasing of a free electron laser in the soft X-ray spectral range with echo enabled harmonic generation. In W. Decking, H. Sinn, G. Geloni, S. Schreiber, M. Marx, & V. R. W. Schaa (Eds.), Free electron laser conference: Vol. 39. 39th international free-electron laser conference. FEL2019. Proceedings (pp. 7-10). https://doi.org/10.18429/JACoW-FEL2019-MOA02
https://www.dora.lib4ri.ch/psi/islandora/object/psi:33356

We report on the successful operation of a Free Electron Laser (FEL) in the Echo Enabled Harmonic Generation (EEHG) scheme at the FERMI facility at Sincrotrone Trieste. The experiment required a modification of the FEL-2 undulator line which, in normal operation, uses two stages of high-gain harmonic generation separated by a delay line. In addition to a new seed laser, the dispersion in the delay-line was increased, the second stage modulator changed and a new manipulator installed in the delay-line chicane hosting additional diagnostic components. With this modified setup we have demonstrated the first evidence of strong exponential gain in a free electron laser operated in EEHG mode at wavelengths as short as 5 nm.

Details
Publication Type

Proceedings Paper

Title

First lasing of a free electron laser in the soft X-ray spectral range with echo enabled harmonic generation

Author(s)

Allaria, E.

Abrami, A.

Badano, L.

Bossi, M.

Capotondi, F.

Castronovo, D.

Cautero, M.

Cinquegrana, P.

Cudin, I.

Danailov, M.B.

Braun, H.H. (8400 Accelerator Technology)

Ferrari, E. (8122 FEL Beam Dynamics)

Prat, E. (8122 FEL Beam Dynamics)

Reiche, S. (8122 FEL Beam Dynamics)

Xiang, D.

et al.

Conference Proceedings

39th international free-electron laser conference. FEL2019. Proceedings

Editor(s)

Decking, Winfried (editor)
Sinn, Harald (editor)
Geloni, Gianluca (editor)
Schreiber, Siegfried (editor)
Marx, Michaela (editor)
Schaa, Volker R.W. (editor)

Series Title

Free electron laser conference

Publisher

JACoW Publishing

Publication Place

Geneva

Volume

39

Start Page

7

End Page

10

Publication Year

2019

Conference

FEL2019

Conference Place

Hamburg, Germany

Conference Date

August 26-30, 2019

Collection

PSI Publications