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It is a Russian-German dipole beamline, part of the Russian-German Laboratory at BESSY II. It covers a soft X-ray photon energy range up to 1200 eV. It ends with a fixed experimental station RGL-PES that offers a multi-technique approach for the investigation of the electronic, chemical and structural properties of materials: X-ray photoemission spectroscopy and X-ray absorption in all possible modes (fluorescence yield, total and partial electron yields).Read More →

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The beamline is called PM4. As a dipole beamline, it provides a moderate photon flux over a wide range of photon energies, in our case in the vacuum ultraviolet/soft X-ray regime. It serves the fixed end-station called LowDosePES. As the name suggests, its specialty is photoemission spectroscopy (PES) at low X-ray dose. Read More →

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At the end of the 90s, a consortium of several German research institutions proposed a multi-purpose infrared beamline for the new electron storage ring BESSY II under the acronym IRIS (InfraRotInitiative Synchrotronstrahlung). Funded by two proposals to the BMBF the beamline started operating in 2002 as a Cooperative Research Groupe (CRG) beamline and turned into a BESSY-operated beamline in 2004 at the end of the BMBF funding period.Read More →