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Helio Tolentino and Others: Spectroscopy and New Scientific Opportunities at SIRIUS, part I


The presentation will be at 9 am Seattle (Los Angeles) time (UTC-7). To join this meeting, use the link: https://washington.zoom.us/j/99543082366  

Sirius is one of the first fourth-generation Synchrotron Light Sources to be built in the world and will have the highest brightness among the light sources in the energy range that goes from soft x-rays to hard X-rays with energies up to 20 keV.

The choice and design of the first Sirius beamlines were defined considering three general guidelines:
Access to New Science: to make the most out of the high brightness of a fourth-generation Synchrotron Light Source to explore techniques such as coherent scattering, nanofocus and inelastic scattering spectroscopy;
Improvement to Current Science: to provide access to enhanced versions of experimental techniques currently available through the high brightness and wide spectrum provided by the Source;
Innovation in Strategic Areas: to provide high-tech tools to solve problems in strategic areas for the Country.

The first 2 x-ray absorption beamlines intended for Sirius are in the assembled phase. These two beamlines will enable unprecedented studies to be made in Brazil, in practically all areas of knowledge, whether of academic or industrial interest:

– Carnauba (Coherent X-rAy NAnoprobe BeAmline) is a beamline for multiple advanced techniques using X-ray absorption, scattering and emission, and combining coherent light with nano-focusing. It is the longest of Sirius beamlines, with 145 meters distance between the light source and the sample environment. This length is required to produce a high optical demagnification and attain a focus size of about 30 nm.

– EMA (Extreme condition Methods of Analysis) beamline will be dedicated to study samples under extreme thermodynamical conditions by coupling both microfocus (1×1 ┬Ám2) and nanofocus (100×100 nm2) beamsizes to x-ray magnetic spectroscopy, x-ray diffraction and x-ray coherent imaging in multiple experimental instruments, placed along the beam path for optimization.