FEL2012 - List of Authors (Raimondi, L.)

Paper

Title

Page

First Lasing of FERMI FEL-2 (1° Stage) and FERMI FEL-1 Recent Results

13

L. Giannessi, E. Allaria, L. Badano, D. Castronovo, P. Cinquegrana, P. Craievich, G. D'Auria, M.B. Danailov, A.A. Demidovich, S. Di Mitri, B. Diviacco, W.M. Fawley, E. Ferrari, L. Fröhlich, G. Gaio, R. Ivanov, E. Karantzoulis, B. Mahieu, N. Mahne, I. Nikolov, G. Penco, L. Raimondi, C. Serpico, P. Sigalotti, S. Spampinati, C. Spezzani, M. Svandrlik, C. Svetina, M. Trovò, M. Veronese, D. Zangrando, M. Zangrando
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
G. De Ninno
University of Nova Gorica, Nova Gorica, Slovenia
F. Parmigiani
Università degli Studi di Trieste, Trieste, Italy

The FERMI@Elettra seeded Free Electron Laser (FEL) is based on two complementary FEL lines, FEL-1 and FEL-2. FEL-1 is a single stage cascaded FEL delivering light in the 80-20nm wavelength range, while FEL-2 is a double stage cascaded FEL where the additional stage should extend the frequency up-conversion to the spectral range of 20-4nm. The FEL-1 beam line is in operation since the end of 2010, with user experiments carried on in 2011 and 2012. During 2012 the commissioning of the FEL-2 beam line has started and the first observation of coherent light from the first stage of the cascade has been demonstrated. In the meanwhile the commissioning of a number of key components of FERMI, as the laser heater, the X-Band cavity for the longitudinal phase space linearization and the high energy RF deflector has been completed. The additional control on the longitudinal phase space and a progressive improvement in the machine optics optimization had a significant impact of FEL-1 performances, which has reached the expected specifications. In addition, emission of radiation at very high order conversion factors (up to 29th) has been observed and double stage cascades have been preliminarily tested with the observation of coherent radiation in the water window, up to the 65th harmonic of the seed laser, at about 4 nm.

Slides MOOB06 [6.633 MB]

TUOA04

Coherence Properties of FERMI@Elettra

B. Mahieu, E. Allaria, G. De Ninno, E. Ferrari, F. Parmigiani, L. Raimondi, S. Spampinati, C. Spezzani, C. Svetina, M. Zangrando
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
B. Mahieu
CEA/DSM/DRECAM/SPAM, Gif-sur-Yvette, France

We report the results of a campaign of measurements aimed at characterizing the spatial and temporal coherence of the FERMI@Elettra free-electron laser. The results (the first obtained on a high-gain seeded single-pass free-electron laser), are compared with those obtained on other (SASE-based) facilities.

Slides TUOA04 [3.274 MB]

THOA02

Photon Beam Transport Systems at FERMI@Elettra: Microfocusing FEL Beam with a K-B Active Optics System

L. Raimondi, A. Abrami, F. Capotondi, M. De Marco, C. Fava, S. Gerusina, R. Gobessi, M. Kiskinova, N. Mahne, E. Mazzucco, F. Parmigiani, E. Pedersoli, L. Rumiz, G. Sostero, C. Svetina
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
D. Cocco
SLAC, Menlo Park, California, USA
M. Zangrando
IOM-CNR, Trieste, Italy

FERMI@Elettra, the first seeded EUV-SXR FEL facility, located at Sincrotrone Trieste S.C.p.A., is under advanced commissioning. It will provide ultrashort (10-100 fs) pulses with high peak brightness in the range 100-4 nm. The photon diagnostics section (PADReS) has been installed and commissioned during the last years. Three of the four installed beam lines (EIS-TIMER, EIS-TIMEX, DiProI and LDM) will employ active X-ray optics for focusing and beam-shaping. For DiProI and LDM the beam focusing is accomplished by K-B active X-ray optic mirrors to reach the fundamental diffraction limit. This system allows work with the two different undulator chains FEL1 and FEL2, which have different source locations, and perform an accurate mirror shaping and wave front optimization. In this work we present preliminary results of measurements with the DiProI beamline end-station. A focal spot size <20 μm at 32 nm has been obtained. We also compare these measurements with the predictions computed with a numerical method based on physical optics (Raimondi-Spiga Code [1]) starting from the mirror surface profile characterization. Measurements and simulations are in agreement.
[1] Raimondi L., Spiga D., 2011, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series Vol. 8147 of Society

Slides THOA02 [5.317 MB]

Paper	Title	Page
MOOB06	First Lasing of FERMI FEL-2 (1° Stage) and FERMI FEL-1 Recent Results	13
	L. Giannessi, E. Allaria, L. Badano, D. Castronovo, P. Cinquegrana, P. Craievich, G. D'Auria, M.B. Danailov, A.A. Demidovich, S. Di Mitri, B. Diviacco, W.M. Fawley, E. Ferrari, L. Fröhlich, G. Gaio, R. Ivanov, E. Karantzoulis, B. Mahieu, N. Mahne, I. Nikolov, G. Penco, L. Raimondi, C. Serpico, P. Sigalotti, S. Spampinati, C. Spezzani, M. Svandrlik, C. Svetina, M. Trovò, M. Veronese, D. Zangrando, M. Zangrando Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy G. De Ninno University of Nova Gorica, Nova Gorica, Slovenia F. Parmigiani Università degli Studi di Trieste, Trieste, Italy
	The FERMI@Elettra seeded Free Electron Laser (FEL) is based on two complementary FEL lines, FEL-1 and FEL-2. FEL-1 is a single stage cascaded FEL delivering light in the 80-20nm wavelength range, while FEL-2 is a double stage cascaded FEL where the additional stage should extend the frequency up-conversion to the spectral range of 20-4nm. The FEL-1 beam line is in operation since the end of 2010, with user experiments carried on in 2011 and 2012. During 2012 the commissioning of the FEL-2 beam line has started and the first observation of coherent light from the first stage of the cascade has been demonstrated. In the meanwhile the commissioning of a number of key components of FERMI, as the laser heater, the X-Band cavity for the longitudinal phase space linearization and the high energy RF deflector has been completed. The additional control on the longitudinal phase space and a progressive improvement in the machine optics optimization had a significant impact of FEL-1 performances, which has reached the expected specifications. In addition, emission of radiation at very high order conversion factors (up to 29th) has been observed and double stage cascades have been preliminarily tested with the observation of coherent radiation in the water window, up to the 65th harmonic of the seed laser, at about 4 nm.
	Slides MOOB06 [6.633 MB]

TUOA04	Coherence Properties of FERMI@Elettra
	B. Mahieu, E. Allaria, G. De Ninno, E. Ferrari, F. Parmigiani, L. Raimondi, S. Spampinati, C. Spezzani, C. Svetina, M. Zangrando Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy B. Mahieu CEA/DSM/DRECAM/SPAM, Gif-sur-Yvette, France
	We report the results of a campaign of measurements aimed at characterizing the spatial and temporal coherence of the FERMI@Elettra free-electron laser. The results (the first obtained on a high-gain seeded single-pass free-electron laser), are compared with those obtained on other (SASE-based) facilities.
	Slides TUOA04 [3.274 MB]

THOA02	Photon Beam Transport Systems at FERMI@Elettra: Microfocusing FEL Beam with a K-B Active Optics System
	L. Raimondi, A. Abrami, F. Capotondi, M. De Marco, C. Fava, S. Gerusina, R. Gobessi, M. Kiskinova, N. Mahne, E. Mazzucco, F. Parmigiani, E. Pedersoli, L. Rumiz, G. Sostero, C. Svetina Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy D. Cocco SLAC, Menlo Park, California, USA M. Zangrando IOM-CNR, Trieste, Italy
	FERMI@Elettra, the first seeded EUV-SXR FEL facility, located at Sincrotrone Trieste S.C.p.A., is under advanced commissioning. It will provide ultrashort (10-100 fs) pulses with high peak brightness in the range 100-4 nm. The photon diagnostics section (PADReS) has been installed and commissioned during the last years. Three of the four installed beam lines (EIS-TIMER, EIS-TIMEX, DiProI and LDM) will employ active X-ray optics for focusing and beam-shaping. For DiProI and LDM the beam focusing is accomplished by K-B active X-ray optic mirrors to reach the fundamental diffraction limit. This system allows work with the two different undulator chains FEL1 and FEL2, which have different source locations, and perform an accurate mirror shaping and wave front optimization. In this work we present preliminary results of measurements with the DiProI beamline end-station. A focal spot size <20 μm at 32 nm has been obtained. We also compare these measurements with the predictions computed with a numerical method based on physical optics (Raimondi-Spiga Code [1]) starting from the mirror surface profile characterization. Measurements and simulations are in agreement. [1] Raimondi L., Spiga D., 2011, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series Vol. 8147 of Society
	Slides THOA02 [5.317 MB]