Description
PHELIX is an undulator beamline[1] installed at the BM06 straight section of SOLARIS, a third-generation synchrotron light facility with an electron energy of 1.5 GeV. The beamline is designed to conduct experiments with ultra-high vacuum X-ray photoemission and X-ray absorption spectroscopy.
The beamline end station is intended to investigate the electronic structure of various materials, from highly ordered crystalline solids to amorphous phases like ceramics, glass, or minerals. Numerous available techniques make this station a powerful and unique tool for studying complex systems. The photoemission experiment can be carried out with techniques like angle resolved photoemission (ARPES), Circular-Dichroism-ARPES, Spin-Resolved-ARPES-ARPES, and XPS. The SPECS PHOIBOS 225 energy analyzer with a deflector system and a CMOS camera, allow to collect photoemission data with an energy resolution better than 2 meV and an angle resolution of 0.1º. The combination of X-ray photoemission and absorption spectroscopy enables Resonant-PES (ResPES) measurements.
The source of PHELIX is an APPLE-II type undulator which delivers soft X-rays with following parameters:
• Photon energy range from 50 eV up to 2000 eV (horizontally polarized light),
• Linear (horizontal and vertical) and Circular (left and righthanded) polarized light,
• Flux: ~1012 ph/s.
The optical design of the PHELIX beamline is based on a classic plane-grating monochromator (PGM) setup operating with a collimated beam. The focusing and re-focusing mirrors system allows for obtaining a beam size spot on the sample of 120 µm x 40 µm (h x v).
