MOGNO, the nano and microtomography beamline at Sirius, the Brazilian synchrotron light source
Nathaly Lopes Archilha, GS R Costa, Gabriel Rodrigues Ferreira, Gabriel Moreno, Andre Silva Rocha, Bernd Meyer, Artur Clarindo Pinto, Eduardo X. Miqueles, Mateus Borba Cardoso, Harry Westfahl
Abstract
Abstract The MOGNO beamline is a high-energy imaging beamline dedicated to in situ and operando experiments in heterogeneous and hierarchical samples, and one of the beamlines of the first phase of SIRIUS, the 4 th generation storage ring at the LNLS. The beamline is currently under commissioning and will operate at energies of 21.5, 39.0 and 67.7 keV, using as primary source a 3.2T permanent magnet dipole, with critical energy of 19.15 keV. The beam is demagnified down to a nanometric focal spot (≈120 nm) using a set of three elliptical mirrors, which introduces a divergence and, hence, the beamline operates in a cone beam geometry with variable field-of-view (FoV between 150 µm to 85 mm) and spatial resolution (≈120 nm to 55 |am). These conditions are reached with two end-stations, the nanotomography and the microtomography stations. A high-Z photon counting detector, with detection area of ≈85 x 85 mm 2 , will serve for both the nano and micro-station, but the beamline will also count on an indirect detection system based on a sCMOS camera and a macroscope.