SOLARIS has been awarded a grant for the construction of a new beamline, PHELIX, and took the first photoemission spectra at the UARPES beamline
The National Synchrotron Radiation Centre SOLARIS has been awarded a grant from the Polish Ministry of Science and Higher Education for the construction of a new beamline, PHELIX, designed to perform studies of the electronic structure of solids with high energy resolution, using soft X-rays.
The source of X-rays will be an elliptically polarizing undulator delivering radiation in the energy range 50–1500 eV. The beamline will be equipped with a grating monochromator with a resolving power of several thousands.
The main technique will be photoelectron spectroscopy, including an angle resolved option. The layout of the beamline and end-station allows the use of light from the same source also for another end-station.
The construction of the beamline will be coordinated by Prof. Jacek Szade from the University of Silesia (Katowice, Poland).
This is not the only good news for SOLARIS and its users. Last week the SOLARIS team, supported by specialists from AGH University of Science and Technology, Jagiellonian University and the Prevac company, took the first photoemission spectra at the UARPES beamline.
The commissioning of UARPES started at the end of April 2016. The undulator (EPU, quasiperiodic, type Apple II) is set to the linear polarized mode. In the first stage, the zero order spot on a phosphorus sample (at the end station) was observed. Then sample was then changed to an Au (111) sample – not cleaned. The first tests of the DA30L spectrometer with photon beam were performed with a monochromatized beam (monochromator in the PGM mode), for an electron beam current no bigger than 40 mA (energy 1.5 GeV). Photoemission spectra were taken at room temperature, for two photon energy ranges, around 100 eV and 30 eV, which correspond to an undulator gap of 80 mm and 50 mm, respectively.
This achievement constitutes another important step towards performing preliminary tests on the beamline and subsequently making it available for research starting from 2017.