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