title: Design and performance of BOREAS, the beamline for resonant X-ray absorption and scattering experiments at the ALBA synchrotron light source.
abstract: The optical design of the BOREAS beamline operating at the ALBA synchrotron radiation facility is described. BOREAS is dedicated to resonant X-ray absorption and scattering experiments using soft X-rays, in an unusually extended photon energy range from 80 to above 4000 eV, and with full polarization control. Its optical scheme includes a fixed-included-angle, variable-line-spacing grating monochromator and a pair of refocusing mirrors, equipped with benders, in a Kirkpatrick-Baez arrangement. It is equipped with two end-stations, one for X-ray magnetic circular dichroism and the other for resonant magnetic scattering. The commissioning results show that the expected beamline performance is achieved both in terms of energy resolution and of photon flux at the sample position.
authors: ALBA Synchrotron Light Source, E-08290 Cerdanyola del Vallès, Barcelona, Spain.
authors: Alessandro
authors: A
authors: Barla
authors: ALBA Synchrotron Light Source, E-08290 Cerdanyola del Vallès, Barcelona, Spain.
authors: Josep
authors: J
authors: Nicolás
authors: SLAC National Accelerator Laboratory, 94025 Menlo Park, USA.
authors: Daniele
authors: D
authors: Cocco
authors: ALBA Synchrotron Light Source, E-08290 Cerdanyola del Vallès, Barcelona, Spain.
authors: Secundino Manuel
authors: SM
authors: Valvidares
authors: ALBA Synchrotron Light Source, E-08290 Cerdanyola del Vallès, Barcelona, Spain.
authors: Javier
authors: J
authors: Herrero-Martín
authors: ALBA Synchrotron Light Source, E-08290 Cerdanyola del Vallès, Barcelona, Spain.
authors: Pierluigi
authors: P
authors: Gargiani
authors: ALBA Synchrotron Light Source, E-08290 Cerdanyola del Vallès, Barcelona, Spain.
authors: Jairo
authors: J
authors: Moldes
authors: ALBA Synchrotron Light Source, E-08290 Cerdanyola del Vallès, Barcelona, Spain.
authors: Claude
authors: C
authors: Ruget
authors: ALBA Synchrotron Light Source, E-08290 Cerdanyola del Vallès, Barcelona, Spain.
authors: Eric
authors: E
authors: Pellegrin
authors: ALBA Synchrotron Light Source, E-08290 Cerdanyola del Vallès, Barcelona, Spain.
authors: Salvador
authors: S
authors: Ferrer
keywords: X-ray magnetic circular dichroism; grating monochromator; soft X-ray beamlines