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FLASH Beamline PG2
The experimental floor has a size of 20 m x 30 m. Currently there are four beamlines in operation, including a beamline with a ~100 μm focus behind a toroidal mirror (beamline BL1), a beamline with a ~25 μm spot produced by an ellipsoidal mirror (BL2), and a high-resolution plane-grating monochromator beamline (PG2) with a ~50 μm focus. Another station (BL3) has no focusing optics yet but can be used for experiments which do not need high photon density or which have their own optics.
A fifth beamline (PG1) is under commissioning behind the monochromator. It will be used for inelastic scattering experiments employing a high-resolution, two-stage spectrometer which is permanently installed at this station.
In order to use the FEL beam most efficiently, at least two experiments are set up at a time at different stations between which the FEL beam is switched by plane mirrors. Usually one experiment is online for 12 hours and then the beam is switched to another station.
