Design and performance of BOREAS,the beamline for resonant X‐ray absorption and scattering experiments at the ALBA synchrotron light source |
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Authors: | Alessandro Barla Josep Nicolás Daniele Cocco Secundino Manuel Valvidares Javier Herrero-Martín Pierluigi Gargiani Jairo Moldes Claude Ruget Eric Pellegrin Salvador Ferrer |
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Institution: | 1. ALBA Synchrotron Light Source, E-08290 Cerdanyola del Vallès, Barcelona, Spain;2. Istituto di Struttura della Materia (ISM), Consiglio Nazionale delle Ricerche (CNR), I-34149Trieste, Italy;3. SLAC National Accelerator Laboratory, 94025 Menlo Park, USA |
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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. |
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Keywords: | soft X‐ray beamlines X‐ray magnetic circular dichroism grating monochromator |
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