A Compact Spectrometer based on a Segmented Conical Crystal Analyzer

ROBLEDO, JOSÉ IGNACIO; PÉREZ, CARLOS A.; LEANI, JUAN JOSÉ; SÁNCHEZ, HÉCTOR JORGE

Congreso; Annual Users´ Meeting of the Brazilian Synchrotron Light Laboratory (LNLS-RAU 2020); 2020

In this work, we present the fabrication and commissioning of a spectrometerbased on a crystal analyzer with an innovative geometry at the D09B-XRFbeamline of the LNLS. The crystal's geometry is composed of several segments ofconically bent Si(220) crystals with different radii[1]. Among its advantages are:1.) It reaches an energy resolution of around 8 eV for the Mn K-alpha1 line,which is at least an order of magnitude better than the commonly used energydispersive spectrometers;2.) it allows for the simultaneous acquisition of a 2 keV window, from 5 to 7 keV,being adjustable by changing the crystal's parameters;3.) it is compact, with a sample-detector distance of only 146 mm.