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The photon analysis, delivery, and reduction system at the FERMI@Elettra free electron laser user facility
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Image of FIG. 1.
FIG. 1.

Layout of FERMI@Elettra photon beam transport system. From left to right (duplicated), there are the valve, the BDA, the BPM, the , the gas absorption cell (GA), the second , the three plane mirrors inside the safety hutch, the photon ES, the two switching systems, and the approved beamlines (low density matter—LDM; diffraction and projection imaging—Diproi; and elastic and inelastic scattering—EIS).

Image of FIG. 2.
FIG. 2.

Layout of the PADReS. From left to right (duplicated), there is the section shutter-stopper-BDA, the first section BPM-, the GA, the second section BPM-, the plane mirrors PMs, the plane grating PG, the ES, and the first switching system.

Image of FIG. 3.
FIG. 3.

BDA: the beam arrives to the first trunk of pyramid that has the side wall tilted by 7.6° with respect to the incoming radiation. Both the trunks are movable.

Image of FIG. 4.
FIG. 4.

Photon transmission through a 6 m long gas cell for different gases at 0.1 mbar: Xe (dashed line), (thick line), and Kr (thin line).

Image of FIG. 5.
FIG. 5.

Reflectivity of gold (dashed line) and graphite (solid line) for incidence angle of 2.5° and photon wavelengths from 40 to 1 nm.


Generic image for table
Table I.

FERMI@Elettra parameters.

Generic image for table
Table II.

Transverse spatial dimensions of the photon beam in the BPMs sections: first BPM located 29 (17) m after FEL 1 (FEL 2) and second BPM located 38 (26) m after FEL 1 (FEL 2).

Generic image for table
Table III.

Parameters of the ES gratings.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The photon analysis, delivery, and reduction system at the FERMI@Elettra free electron laser user facility