The SGM3 beamline on ASTRID2
The angle-resolved photoemission spectroscopy (ARPES) beamline SGM3 was transferred to the new low-emittance storage ring ASTRID2 in 2014. It was upgraded to fully exploit the advantages of the brighter source of the new 3rd generation light source. The monochromator unit (Dragon type) was retained while the pre- and post-optical systems were redesigned. The upgrade of the beamline significantly increased the performance of the ARPES experiments with both a smaller sample spot size (x100) and higher intensity available for high-resolution experiments (x10). This is expected to have a high impact on the planned research within the fields of new electronic materials, such as graphene, correlated oxides and topological insulators.
The SGM3 beamline is designed to operate in the 12–150 eV photon energy range with a resolving power of around 15,000. This energy range is covered with three spherical gratings and by using the first to seventh harmonic of the undulator inserted in the ASTRID2 storage ring.
The system is particularly well suited for measurements of the electronic structure along arbitrary direction in k-space, Fermi surface mapping and bulk bands mapping. The SGM3 beamline is combined with an end-station for angle-resolved photoemission (ARPES).
The SGM3 beamline was originally commissioned on ASTRID in 2000 and was transferred and commissioned on the new ring ASTRID2 in 2014.
You can read more about SGM3 on ASTRID here.
For further information please contact:
Beamline: Søren Vrønning Hoffmann
ARPES experiment: Philip Hofmann
Last Modified 28 August 2018