SAPOTI is the second nanoprobe at the CARNAÚBA (Coherent X-Ray Nanoprobe Beamline) beamline at the 4th-generation light source Sirius/LNLS. Working from 2.05 to 15 keV, it relies on simultaneous multi-analytical X-ray techniques (absorption, diffraction, spectroscopy, fluorescence and luminescence) and imaging in 2D and 3D. It has been designed for highly-stable fully-coherent beam sizes from 30 to 120nm, and monochromatic flux up to 1e11ph/s/100mA/0.01%BW after an achromatic KB (Kirkpatrick-Baez) focusing optics. Moreover, a new in-vacuum high-performance cryogenic sample stage has been developed aiming at single-nanometer resolution images. The nanoprobe is now successfully installed and technical commissioning is underway. The focus of this work is two-fold. Firstly, it highlights the system integration results at the beamline, namely: overall thermo-mechanical performance of the KB mirrors and sample stage. And, finally, it showcases the instrument’s technical commissioning results, namely: KB alignment and focus stability, and initial fly-scan potential for ptychography and absorption imaging.
Falchetto et al. (Thu,) studied this question.