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.

Techniques (as available by Q1 2021)

Available forTechnique/facility description
General UsersBeamline: Linear horizontally polarized light from LPU, with energy range 40-1500 eV. Spot on sample both defocused (0.5-1.5 mm) and focused (from 50x15 um to 150x40 um in different end stations).
General UsersSurface- and Material Science (SMS) branch:
- High-resolution photoelectron spectroscopy (PES) on solid samples using DA30-L(W) analyzer and 4-axis manipulator;
- X-ray absorption spectroscopy (XAS or NEXAFS) using total electron yield, partial electron yield and partial fluorescence yield (SDD detector);
- Fast NEXAFS by continuous/non-stop scanning
- Possibility to transfer samples in a vacuum suitcase from/to the off-line MAX IV STM lab (this option requires adding "SPM-lab" to your DUO proposal).
General UsersLow Density Matter (LDM) branch:
High-resolution PES on LDM samples using R4000 analyzer with the following sample delivery systems (samples must be approved by chemical safety group):
- Liquid jet setup for e.g. aqueous solutions
- Molecular jet source (continuous beam) for experiments on cold beams of atomic and molecular gases
- Gas cell for PES experiments on atomic and molecular gases
- Magnetron-based source for metal particle beams


ICE end station: COLTRIMS/Multi-coincidence spectroscopy; to be used with molecular jet/cluster source (for details see ICE end station webpage in the MAX IV LDM webpages).
General UsersSingle Bunch Mode:
One week of single-bunch operation available in the Fall 22 beamtime period. Please state clearly in your beamtime proposal if you are applying for beamtime during the available single bunch week!

2022-04-19

Nano solutions for future supercomputers: resolving the von-Neumann bottleneck

Image: The chip developed by researchers during the project. Credit: Saketh Ram Mamidala Researchers from Lund University benefitted from MAX IV laboratory to find solutions to the long-standing technological challenge: the von-Neumann bottleneck. After nearly year-long research during the pandemic, they successfully integrated the processor and memory onto a single vertical nanowire in a 3D