FlexPES

The FlexPES (Flexible PhotoElectron Spectroscopy) beamline caters for the experimental needs of both Surface/Material Science and Low Density Matter user communities offering the possibility to perform a variety of photoemission and soft X-ray absorption experiments in the photon energy range 40 – 1500 eV. The two-branch configuration with double-striped toroidal refocusing mirrors ensures maximum flexibility – up to four endstations can be accommodated on the two branches of the beamline simultaneously, and each of these endstations can avail of different focusing conditions. The end stations offer a diverse range of experimental techniques, detectors and sample handling facilities and can be used with a variety of sample delivery systems.
The Surface and Material Science (SMS) branch is dedicated to UHV (10^-6 to 10^-11 mbar) experiments on solid samples. It hosts a versatile photoemission end station, providing visiting scientists with different modes of PES and soft-XAS techniques and a variety of sample transfer and treatment facilities. The research focus is on surface phenomena, synthesis and reactions, thin films relevant for catalysis, solar cells, sensors and other energy-related applications, protective coatings, 2D- and nano-materials. Downstream from this end station there is a free port for a second (user-defined) experiment.
The Low Density Matter (LDM) branch accommodates research on gas-phase samples (molecules/clusters), liquid samples and even some surface science experiments (on solar cells, Li-ion batteries, etc) in the pressure range 10^-6 to 10^-9 mbar. A permanent photoelectron spectroscopy end station will be used for XPS and XAS experiments. The second port on the LDM branch can accommodate user-defined experiments or the new ICE end station for multi-coincidence spectroscopy (under development). A flexible sample molecular jet/cluster source and a liquid jet source (both under development) will be available to the MAX IV LDM community.